66 results on '"D'Antonio CM"'
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2. Pervasive gaps in Amazonian ecological research
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Carvalho, Raquel L, Resende, Angelica F, Barlow, Jos, França, Filipe M, Moura, Mario R, Maciel, Rafaella, Alves-Martins, Fernanda, Shutt, Jack D, Nunes, Cassio A, Elias, Fernando, Silveira, Juliana M, Stegmann, Lis, Baccaro, Fabricio B, Juen, Leandro, Schietti, Juliana, Aragão, Luiz, Berenguer, Erika, Castello, Leandro, Costa, Flavia RC, Guedes, Matheus L, Leal, Cecilia G, Lees, Alexander C, Isaac, Victoria, Nascimento, Rodrigo O, Phillips, Oliver L, Schmidt, Fernando Augusto, ter Steege, Hans, Vaz-de-Mello, Fernando, Venticinque, Eduardo M, Vieira, Ima Célia Guimarães, Zuanon, Jansen, Ferreira, Joice, França, Filipe, Shutt, Jack, Geber Filho, Adem Nagibe dos Santos, Ruschel, Ademir, Calor, Adolfo Ricardo, de Lima Alves, Adriana, Muelbert, Adriane Esquivel, Quaresma, Adriano, Vicentini, Alberto, Piedade, Alexandra Rocha da, Oliveira, Alexandre Adalardo de, Aleixo, Alexandre, Casadei-Ferreira, Alexandre, Gontijo, Alexandre, Hercos, Alexandre, Andriolo, Aline, Lopes, Aline, Pontes-Lopes, Aline, Santos, Allan Paulo Moreira dos, Oliveira, Amanda Batista da Silva de, Mortati, Amanda Frederico, Salcedo, Ana Karina Moreyra, Albernaz, Ana Luisa, Fares, Ana Luisa, Andrade, Ana Luiza, Oliveira Pes, Ana Maria, Faria, Ana Paula Justino, Batista, Anderson Pedro Bernadina, Puker, Anderson, Bueno, Anderson S, Junqueira, André Braga, Holanda de Andrade, André Luiz Ramos, Ghidini, André Ricardo, Galuch, André V, Menezes, Andressa Silvana Oliveira de, Manzatto, Angelo Gilberto, Correa, Anne Sthephane AS, Queiroz, Antonio CM, Zanzini, Antonio Carlos da Silva, Olivo Neto, Antonio Miguel, Melo, Antonio Willian Flores de, Guimaraes, Aretha Franklin, Castro, Arlison Bezerra, Borges, Augusto, Ferreira, Aurélia Bentes, Marimon, Beatriz S, Marimon-Junior, Ben Hur, Flores, Bernardo M, de Resende, Bethânia Oliveira, Albuquerque, Bianca Weiss, Villa, Boris, Davis, Bradley, Nelson, Bruce, Williamson, Bruce, Melo, Bruna Santos Bitencourt de, Cintra, Bruno BL, Santos, Bruno Borges, Prudente, Bruno da Silveira, Luize, Bruno Garcia, Godoy, Bruno Spacek, Rutt, Cameron L, Duarte Ritter, Camila, Silva, Camila VJ, Ribas, Carla Rodrigues, Peres, Carlos A, Azevêdo, Carlos Augusto Silva de, Freitas, Carlos, Cordeiro, Carlos Leandro, Brocardo, Carlos Rodrigo, Castilho, Carolina, Levis, Carolina, Doria, Carolina Rodrigues da Costa, Arantes, Caroline C, Santos, Cássia Anicá dos, Jakovac, Catarina C, Silva, Celice Alexandre, Benetti, Cesar João, Lasmar, Chaim, Marsh, Charles J, Andretti, Christian Borges, Oliveira, Cinthia Pereira de, Cornelius, Cintia, Alves da Rosa, Clarissa, Baider, Cláudia, Gualberto, Cláudia G, Deus, Claudia Pereira de, Monteiro Jr., Cláudio da Silva, Santos Neto, Cláudio Rabelo dos, Lobato, Cleonice Maria Cardoso, Santos, Cleverson Rannieri Meira dos, Penagos, Cristian Camilo Mendoza, Costa, Daniel da Silva, Vieira, Daniel Luis Mascia, Aguiar, Daniel Praia Portela de, Veras, Daniel Silas, Pauletto, Daniela, Braga, Danielle de Lima, Storck-Tonon, Danielle, Almeida, Daniely da Frota, Douglas, Danyhelton, Amaral, Dário Dantas do, Gris, Darlene, Luther, David, Edwards, David P, Guimarães, David Pedroza, Santos, Deane Cabral dos, Campana, Débora Rodrigues de Souza, Nogueira, Denis Silva, Silva, Dennis Rodrigues da, Dutra, Dhâmyla Bruna de Souza, Rosa, Dian Carlos Pinheiro, Silva, Diego Armando Silva da, Pedroza, Diego, Anjos, Diego V, Melo Lima, Diego Viana, Silvério, Divino V, Rodrigues, Domingos de Jesus, Bastos, Douglas, Daly, Douglas, Barbosa, Edelcilio Marques, Arenas, Edith Rosario Clemente, Oliveira, Edmar Almeida de, Santos, Ednaira Alencar dos, Santana, Edrielly Carolinne Carvalho de, Guilherme, Edson, Vidal, Edson, Campos-Filho, Eduardo Malta, van den Berg, Eduardo, Morato, Elder Ferreira, da Silva, Elidiomar R, Marques, Elineide E, Pringle, Elizabeth G, Nichols, Elizabeth, Andresen, Ellen, Farias, Emanuelle de Sousa, Siqueira, Emely Laiara Silva de, de Albuquerque, Emília Zoppas, Görgens, Eric Bastos, Cunha, Erlane José Rodrigues da, Householder, Ethan, Novo, Evlyn Márcia Moraes de Leão, Oliveira, Fabiana Ferreira de, Roque, Fabio de Oliveira, Coletti, Fabrício, Reis, Fagno, Moreira, Felipe FF, Todeschini, Felipe, Carvalho, Fernanda Antunes, Coelho de Souza, Fernanda, Silva, Fernando Augusto Barbosa, Carvalho, Fernando Geraldo, Cabeceira, Fernando Gonçalves, d’Horta, Fernando Mendonça, Mendonça, Fernando P, Florêncio, Fernando Prado, Carvalho, Fernando Rogério de, Arruda, Filipe Viegas de, Nonato, Flávia Alessandra da Silva, Santana, Flávia Delgado, Durgante, Flavia, Souza, Flávia Kelly Siqueira de, Obermuller, Flávio Amorim, Castro, Flávio Siqueira de, Wittmann, Florian, Sales, Francisco Matheus da Silva, Neto, Francisco Valente, Salles, Frederico Falcão, Borba, Gabriel Costa, Damasco, Gabriel, Barros, Gabriel Gazzana, Brejão, Gabriel Lourenço, Jardim, Gabriela Abrantes, Prance, Ghillean T, Lima, Gisiane Rodrigues, Desidério, Gleison Robson, Melo, Gracilene da Costa de, Carmo, Guilherme Henrique Pompiano do, Cabral, Guilherme Sampaio, Rousseau, Guillaume Xavier, da Silva, Gustavo Cardoso, Schwartz, Gustavo, Griffiths, Hannah, Queiroz, Helder Lima de, Espírito-Santo, Helder MV, Cabette, Helena Soares Ramos, Nascimento, Henrique Eduardo Mendonça, Vasconcelos, Heraldo L, Medeiros, Herison, Aguiar, Hilton Jeferson Alves Cardoso de, Leão, Híngara, Wilker, Icaro, Gonçalves, Inês Correa, de Sousa Gorayeb, Inocêncio, Miranda, Ires Paula de Andrade, Brown, Irving Foster, Santos, Isis Caroline Siqueira, Fernandes, Itanna Oliveira, Fernandes, Izaias, Delabie, Jacques Hubert Charles, de Abreu, Jadson Coelho, Gama Neto, Jaime de Liege, Costa, Janaina Barbosa Pedrosa, Noronha, Janaína Costa, de Brito, Janaina Gomes, Wolfe, Jared, Santos, Jean Carlos, Ferreira-Ferreira, Jefferson, e Gomes, Jerrian Oliveira, Lasky, Jesse R, de Faria Falcão, Jéssica Caroline, Costa, Jessica Gomes, Cravo, Jessica Soares, Guerrero, Jesús Enrique Burgos, Muñoz Gutiérrez, Jhonatan Andrés, Carreiras, João, Lanna, João, Silva Brito, Joás, Schöngart, Jochen, Mendes Aguiar, Jonas José, Lima, Jônatas, Barroso, Jorcely G, Noriega, Jorge Ari, Pereira, Jorge Luiz da Silva, Nessimian, Jorge Luiz, Souza, Jorge Luiz Pereira de, de Toledo, José Julio, Magalhães, José Leonardo Lima, Camargo, José Luís, Oliveira, José Max B, Ribeiro, José Moacir Ferreira, Silva, José Orlando de Almeida, da Silva Guimarães, José Renan, Hawes, Joseph E, Andrade-Silva, Joudellys, Revilla, Juan David Cardenas, da Silva, Júlia Santana, da Silva Menger, Juliana, Rechetelo, Juliana, Stropp, Juliana, Barbosa, Julianna Freires, do Vale, Julio Daniel, Louzada, Julio, Cerqueira Silva, Július César, da Silva, Karina Dias, Melgaço, Karina, Carvalho, Karine Santana, Yamamoto, Kedma Cristine, Mendes, Keila Rêgo, Vulinec, Kevina, Maia, Laís Ferreira, Cavalheiro, Larissa, Vedovato, Laura Barbosa, Demarchi, Layon Oreste, Giacomin, Leandro, Dumas, Leandro Lourenço, Maracahipes, Leandro, Brasil, Leandro Schlemmer, Ferreira, Leandro Valle, Calvão, Lenize Batista, Maracahipes-Santos, Leonardo, Reis, Leonardo Pequeno, da Silva, Letícia Fernandes, de Oliveira Melo, Lia, Carvalho, Lidiany Camila da Silva, Casatti, Lílian, Amado, Lílian Lund, de Matos, Liliane Stedile, Vieira, Lisandro, Prado, Livia Pires do, Alencar, Luana, Fontenele, Luane, Mazzei, Lucas, Navarro Paolucci, Lucas, Zanzini, Lucas Pereira, Carvalho, Lucélia Nobre, Crema, Luciana Carvalho, Brulinger, Luciane Ferreira Barbosa, Montag, Luciano Fogaça de Assis, Naka, Luciano Nicolas, Azara, Ludson, Silveira, Luis Fábio, Nunes, Luis Gabriel de Oliveira, Rosalino, Luís Miguel do Carmo, Mestre, Luiz AM, Bonates, Luiz Carlos de Matos, Coelho, Luiz de Souza, Borges, Luiz Henrique Medeiros, Lourenço, Luzia da Silva, Freitas, Madson Antonio Benjamin, Brito, Maiara Tábatha da Silva, Pombo, Maihyra Marina, da Rocha, Maíra, Cardoso, Maira Rodrigues, Guedes, Marcelino Carneiro, Raseira, Marcelo Bassols, Medeiros, Marcelo Brilhante de, Carim, Marcelo de Jesus Veiga, Simon, Marcelo Fragomeni, Pansonato, Marcelo Petratti, dos Anjos, Marcelo Rodrigues, Nascimento, Marcelo Trindade, Souza, Márcia Regina de, Monteiro, Marcília Gabriella Tavares, da Silva, Márcio Joaquim, Uehara-Prado, Marcio, Oliveira, Marco Antonio de, Callisto, Marcos, Vital, Marcos José Salgado, o Santos, Marcos Pérsi Dantas, Silveira, Marcos, Oliveira, Marcus Vinicio Neves D, Pérez-Mayorga, María Angélica, Carniello, Maria Antonia, Lopes, Maria Aparecida, Silveira, Maria Aurea Pinheiro de Almeida, Esposito, Maria Cristina, Maldaner, Maria Eduarda, Passos, Maria Inês S, Anacléto, Maria José Pinheiro, Costa, Maria Katiane Sousa, Martins, Maria Pires, Piedade, Maria Teresa Fernandez, Irume, Mariana Victória, Costa, Marília Maria Silva da, Maximiano, Marina Franco de Almeida, Freitas, Marina Guimarães, Cochrane, Mark A, Gastauer, Markus, Almeida, Marllus Rafael Negreiros, Souza, Mateus Fernando de, Catarino, Michel, Costa Batista, Michela, Massam, Mike R, Martins, Mila Ferraz de Oliveira, Holmgren, Milena, Almeida, Morgana, Dias, Murilo S, Espírito Santo, Nádia Barbosa, Benone, Naraiana Loureiro, Ivanauskas, Natalia Macedo, Medeiros, Natália, Targhetta, Natalia, Félix, Nathalia Silva, Ferreira, Nelson, Hamada, Neusa, Campos, Nubia, Giehl, Nubia França da Silva, Metcalf, Oliver Charles, Silva, Otávio Guilherme Morais da, Cerqueira, Pablo Vieira, Moser, Pamela, Miranda, Patrícia Nakayama, Peruquetti, Patricia Santos Ferreira, Alverga, Paula Palhares de Polari, Prist, Paula, Souto, Paula, Brando, Paulo, Pompeu, Paulo dos Santos, Barni, Paulo Eduardo, Graça, Paulo Mauricio de Alencastro, Morandi, Paulo S, Cruz, Paulo Vilela, i Silva, Pedro Giovân da, Bispo, Pitágoras C, Camargo, Plínio Barbosa de, Sarmento, Priscila S de M, Souza, Priscila, Andrade, Rafael Barreto de, Braga, Rafael Benzi, Boldrini, Rafael, Bastos, Rafael Costa, Assis, Rafael Leandro de, Salomão, Rafael P, Leitão, Rafael Pereira, Mendes, Raimundo NG, Carpanedo, Rainiellen de Sá, Melinski, Ramiro Dário, Ligeiro, Raphael, e Pérez, Raúl Enriqu Pirela, Barbosa, Reinaldo Imbrozio, Cajaiba, Reinaldo Lucas, Silvano, Renato Azevedo Matias, Salomão, Renato Portela, Hilário, Renato Richard, Martins, Renato Tavares, Perdiz, Ricardo de Oliveira, Vicente, Ricardo Eduardo, Silva, Ricardo José da, Koroiva, Ricardo, Solar, Ricardo, Silva, Richarlly da Costa, s de Lima, Robson Borge, Silva, Robson dos Santos Alves da, Mariano, Rodolfo, Ribeiro, Rodrigo Arison Barbosa, Fadini, Rodrigo Ferreira, Oliveira, Rodrigo Leonardo Costa de, Feitosa, Rodrigo Machado, Matavelli, Rodrigo, Mormul, Roger Paulo, da Silva, Rogério Rosa, Zanetti, Ronald, Barthem, Ronaldo, Almeida, Rony Peterson Santos, Ribeiro, Sabina Cerruto, r Costa Neto, Salustiano Vila da, Nienow, Samuel, Oliveira, Sérgio Augusto Vidal de, Borges, Sérgio Henrique, Milheiras, Sérgio, Ribeiro, Sérvio Pontes, Couceiro, Sheyla Regina Marques, Sousa, Sidney Araújo de, Rodrigues, Silvia Barbosa, Dutra, Silvia Leitão, Mahood, Simon, Vieira, Simone Aparecida, Arrolho, Solange, Silva, Sonaira Souza da, Triana, Stefania Pinzón, Laurance, Susan, Kunz, Sustanis Horn, Alvarado, Swanni T, Rodrigues, Taís Helena Araujo, Santos, Talitha Ferreira dos, Machado, Tatiana Lemos da Silva, Feldpausch, Ted R, Sousa, Thaiane, Michelan, Thaisa Sala, Emilio, Thaise, Brito, Thaline de Freitas, André, Thiago, Barbosa, Thiago Augusto Pedroso, Miguel, Thiago Barros, Izzo, Thiago Junqueira, Laranjeiras, Thiago Orsi, Mendes, Thiago Pereira, Silva, Thiago Sanna Freire, Krolow, Tiago Kütter, Begot, Tiago Octavio, Baker, Timothy R, Domingues, Tomas F, Giarrizzo, Tommaso, Bentos, Tony Vizcarra, Haugaasen, Torbjørn, Peixoto, Ualerson, Pozzobom, Ully Mattilde, Korasaki, Vanesca, Ribeiro, Vanessa Soares, Scudeller, Veridiana Vizoni, Oliveira, Victor Hugo Fonseca, Landeiro, Victor Lemes, Santos Ferreira, Victor Rennan, Silva, Victória de Nazaré Gama, Gomes, Vitor Hugo Freitas, Oliveira, Vívian Campos de, Firmino, Viviane, Santiago, Wagner Tadeu Vieira, Beiroz, Wallace, Almeida, Wanessa Rejane de, Oliveira, Washington Luis de, Silva, Wegliane Campelo da, Castro, Wendeson, Dáttilo, Wesley, Cruz, Wesley Jonatar Alves da, Silva, Wheriton Fernando Moreira da, Magnusson, William E, Laurance, William, Milliken, William, Paula, William Sousa de, Malhi, Yadvinder, Shimabukuro, Yosio Edemir, Lima, Ysadhora Gomes de, Shimano, Yulie, Feitosa, Yuri, Carvalho, Raquel L, Resende, Angelica F, Barlow, Jos, França, Filipe M, Moura, Mario R, Maciel, Rafaella, Alves-Martins, Fernanda, Shutt, Jack D, Nunes, Cassio A, Elias, Fernando, Silveira, Juliana M, Stegmann, Lis, Baccaro, Fabricio B, Juen, Leandro, Schietti, Juliana, Aragão, Luiz, Berenguer, Erika, Castello, Leandro, Costa, Flavia RC, Guedes, Matheus L, Leal, Cecilia G, Lees, Alexander C, Isaac, Victoria, Nascimento, Rodrigo O, Phillips, Oliver L, Schmidt, Fernando Augusto, ter Steege, Hans, Vaz-de-Mello, Fernando, Venticinque, Eduardo M, Vieira, Ima Célia Guimarães, Zuanon, Jansen, Ferreira, Joice, França, Filipe, Shutt, Jack, Geber Filho, Adem Nagibe dos Santos, Ruschel, Ademir, Calor, Adolfo Ricardo, de Lima Alves, Adriana, Muelbert, Adriane Esquivel, Quaresma, Adriano, Vicentini, Alberto, Piedade, Alexandra Rocha da, Oliveira, Alexandre Adalardo de, Aleixo, Alexandre, Casadei-Ferreira, Alexandre, Gontijo, Alexandre, Hercos, Alexandre, Andriolo, Aline, Lopes, Aline, Pontes-Lopes, Aline, Santos, Allan Paulo Moreira dos, Oliveira, Amanda Batista da Silva de, Mortati, Amanda Frederico, Salcedo, Ana Karina Moreyra, Albernaz, Ana Luisa, Fares, Ana Luisa, Andrade, Ana Luiza, Oliveira Pes, Ana Maria, Faria, Ana Paula Justino, Batista, Anderson Pedro Bernadina, Puker, Anderson, Bueno, Anderson S, Junqueira, André Braga, Holanda de Andrade, André Luiz Ramos, Ghidini, André Ricardo, Galuch, André V, Menezes, Andressa Silvana Oliveira de, Manzatto, Angelo Gilberto, Correa, Anne Sthephane AS, Queiroz, Antonio CM, Zanzini, Antonio Carlos da Silva, Olivo Neto, Antonio Miguel, Melo, Antonio Willian Flores de, Guimaraes, Aretha Franklin, Castro, Arlison Bezerra, Borges, Augusto, Ferreira, Aurélia Bentes, Marimon, Beatriz S, Marimon-Junior, Ben Hur, Flores, Bernardo M, de Resende, Bethânia Oliveira, Albuquerque, Bianca Weiss, Villa, Boris, Davis, Bradley, Nelson, Bruce, Williamson, Bruce, Melo, Bruna Santos Bitencourt de, Cintra, Bruno BL, Santos, Bruno Borges, Prudente, Bruno da Silveira, Luize, Bruno Garcia, Godoy, Bruno Spacek, Rutt, Cameron L, Duarte Ritter, Camila, Silva, Camila VJ, Ribas, Carla Rodrigues, Peres, Carlos A, Azevêdo, Carlos Augusto Silva de, Freitas, Carlos, Cordeiro, Carlos Leandro, Brocardo, Carlos Rodrigo, Castilho, Carolina, Levis, Carolina, Doria, Carolina Rodrigues da Costa, Arantes, Caroline C, Santos, Cássia Anicá dos, Jakovac, Catarina C, Silva, Celice Alexandre, Benetti, Cesar João, Lasmar, Chaim, Marsh, Charles J, Andretti, Christian Borges, Oliveira, Cinthia Pereira de, Cornelius, Cintia, Alves da Rosa, Clarissa, Baider, Cláudia, Gualberto, Cláudia G, Deus, Claudia Pereira de, Monteiro Jr., Cláudio da Silva, Santos Neto, Cláudio Rabelo dos, Lobato, Cleonice Maria Cardoso, Santos, Cleverson Rannieri Meira dos, Penagos, Cristian Camilo Mendoza, Costa, Daniel da Silva, Vieira, Daniel Luis Mascia, Aguiar, Daniel Praia Portela de, Veras, Daniel Silas, Pauletto, Daniela, Braga, Danielle de Lima, Storck-Tonon, Danielle, Almeida, Daniely da Frota, Douglas, Danyhelton, Amaral, Dário Dantas do, Gris, Darlene, Luther, David, Edwards, David P, Guimarães, David Pedroza, Santos, Deane Cabral dos, Campana, Débora Rodrigues de Souza, Nogueira, Denis Silva, Silva, Dennis Rodrigues da, Dutra, Dhâmyla Bruna de Souza, Rosa, Dian Carlos Pinheiro, Silva, Diego Armando Silva da, Pedroza, Diego, Anjos, Diego V, Melo Lima, Diego Viana, Silvério, Divino V, Rodrigues, Domingos de Jesus, Bastos, Douglas, Daly, Douglas, Barbosa, Edelcilio Marques, Arenas, Edith Rosario Clemente, Oliveira, Edmar Almeida de, Santos, Ednaira Alencar dos, Santana, Edrielly Carolinne Carvalho de, Guilherme, Edson, Vidal, Edson, Campos-Filho, Eduardo Malta, van den Berg, Eduardo, Morato, Elder Ferreira, da Silva, Elidiomar R, Marques, Elineide E, Pringle, Elizabeth G, Nichols, Elizabeth, Andresen, Ellen, Farias, Emanuelle de Sousa, Siqueira, Emely Laiara Silva de, de Albuquerque, Emília Zoppas, Görgens, Eric Bastos, Cunha, Erlane José Rodrigues da, Householder, Ethan, Novo, Evlyn Márcia Moraes de Leão, Oliveira, Fabiana Ferreira de, Roque, Fabio de Oliveira, Coletti, Fabrício, Reis, Fagno, Moreira, Felipe FF, Todeschini, Felipe, Carvalho, Fernanda Antunes, Coelho de Souza, Fernanda, Silva, Fernando Augusto Barbosa, Carvalho, Fernando Geraldo, Cabeceira, Fernando Gonçalves, d’Horta, Fernando Mendonça, Mendonça, Fernando P, Florêncio, Fernando Prado, Carvalho, Fernando Rogério de, Arruda, Filipe Viegas de, Nonato, Flávia Alessandra da Silva, Santana, Flávia Delgado, Durgante, Flavia, Souza, Flávia Kelly Siqueira de, Obermuller, Flávio Amorim, Castro, Flávio Siqueira de, Wittmann, Florian, Sales, Francisco Matheus da Silva, Neto, Francisco Valente, Salles, Frederico Falcão, Borba, Gabriel Costa, Damasco, Gabriel, Barros, Gabriel Gazzana, Brejão, Gabriel Lourenço, Jardim, Gabriela Abrantes, Prance, Ghillean T, Lima, Gisiane Rodrigues, Desidério, Gleison Robson, Melo, Gracilene da Costa de, Carmo, Guilherme Henrique Pompiano do, Cabral, Guilherme Sampaio, Rousseau, Guillaume Xavier, da Silva, Gustavo Cardoso, Schwartz, Gustavo, Griffiths, Hannah, Queiroz, Helder Lima de, Espírito-Santo, Helder MV, Cabette, Helena Soares Ramos, Nascimento, Henrique Eduardo Mendonça, Vasconcelos, Heraldo L, Medeiros, Herison, Aguiar, Hilton Jeferson Alves Cardoso de, Leão, Híngara, Wilker, Icaro, Gonçalves, Inês Correa, de Sousa Gorayeb, Inocêncio, Miranda, Ires Paula de Andrade, Brown, Irving Foster, Santos, Isis Caroline Siqueira, Fernandes, Itanna Oliveira, Fernandes, Izaias, Delabie, Jacques Hubert Charles, de Abreu, Jadson Coelho, Gama Neto, Jaime de Liege, Costa, Janaina Barbosa Pedrosa, Noronha, Janaína Costa, de Brito, Janaina Gomes, Wolfe, Jared, Santos, Jean Carlos, Ferreira-Ferreira, Jefferson, e Gomes, Jerrian Oliveira, Lasky, Jesse R, de Faria Falcão, Jéssica Caroline, Costa, Jessica Gomes, Cravo, Jessica Soares, Guerrero, Jesús Enrique Burgos, Muñoz Gutiérrez, Jhonatan Andrés, Carreiras, João, Lanna, João, Silva Brito, Joás, Schöngart, Jochen, Mendes Aguiar, Jonas José, Lima, Jônatas, Barroso, Jorcely G, Noriega, Jorge Ari, Pereira, Jorge Luiz da Silva, Nessimian, Jorge Luiz, Souza, Jorge Luiz Pereira de, de Toledo, José Julio, Magalhães, José Leonardo Lima, Camargo, José Luís, Oliveira, José Max B, Ribeiro, José Moacir Ferreira, Silva, José Orlando de Almeida, da Silva Guimarães, José Renan, Hawes, Joseph E, Andrade-Silva, Joudellys, Revilla, Juan David Cardenas, da Silva, Júlia Santana, da Silva Menger, Juliana, Rechetelo, Juliana, Stropp, Juliana, Barbosa, Julianna Freires, do Vale, Julio Daniel, Louzada, Julio, Cerqueira Silva, Július César, da Silva, Karina Dias, Melgaço, Karina, Carvalho, Karine Santana, Yamamoto, Kedma Cristine, Mendes, Keila Rêgo, Vulinec, Kevina, Maia, Laís Ferreira, Cavalheiro, Larissa, Vedovato, Laura Barbosa, Demarchi, Layon Oreste, Giacomin, Leandro, Dumas, Leandro Lourenço, Maracahipes, Leandro, Brasil, Leandro Schlemmer, Ferreira, Leandro Valle, Calvão, Lenize Batista, Maracahipes-Santos, Leonardo, Reis, Leonardo Pequeno, da Silva, Letícia Fernandes, de Oliveira Melo, Lia, Carvalho, Lidiany Camila da Silva, Casatti, Lílian, Amado, Lílian Lund, de Matos, Liliane Stedile, Vieira, Lisandro, Prado, Livia Pires do, Alencar, Luana, Fontenele, Luane, Mazzei, Lucas, Navarro Paolucci, Lucas, Zanzini, Lucas Pereira, Carvalho, Lucélia Nobre, Crema, Luciana Carvalho, Brulinger, Luciane Ferreira Barbosa, Montag, Luciano Fogaça de Assis, Naka, Luciano Nicolas, Azara, Ludson, Silveira, Luis Fábio, Nunes, Luis Gabriel de Oliveira, Rosalino, Luís Miguel do Carmo, Mestre, Luiz AM, Bonates, Luiz Carlos de Matos, Coelho, Luiz de Souza, Borges, Luiz Henrique Medeiros, Lourenço, Luzia da Silva, Freitas, Madson Antonio Benjamin, Brito, Maiara Tábatha da Silva, Pombo, Maihyra Marina, da Rocha, Maíra, Cardoso, Maira Rodrigues, Guedes, Marcelino Carneiro, Raseira, Marcelo Bassols, Medeiros, Marcelo Brilhante de, Carim, Marcelo de Jesus Veiga, Simon, Marcelo Fragomeni, Pansonato, Marcelo Petratti, dos Anjos, Marcelo Rodrigues, Nascimento, Marcelo Trindade, Souza, Márcia Regina de, Monteiro, Marcília Gabriella Tavares, da Silva, Márcio Joaquim, Uehara-Prado, Marcio, Oliveira, Marco Antonio de, Callisto, Marcos, Vital, Marcos José Salgado, o Santos, Marcos Pérsi Dantas, Silveira, Marcos, Oliveira, Marcus Vinicio Neves D, Pérez-Mayorga, María Angélica, Carniello, Maria Antonia, Lopes, Maria Aparecida, Silveira, Maria Aurea Pinheiro de Almeida, Esposito, Maria Cristina, Maldaner, Maria Eduarda, Passos, Maria Inês S, Anacléto, Maria José Pinheiro, Costa, Maria Katiane Sousa, Martins, Maria Pires, Piedade, Maria Teresa Fernandez, Irume, Mariana Victória, Costa, Marília Maria Silva da, Maximiano, Marina Franco de Almeida, Freitas, Marina Guimarães, Cochrane, Mark A, Gastauer, Markus, Almeida, Marllus Rafael Negreiros, Souza, Mateus Fernando de, Catarino, Michel, Costa Batista, Michela, Massam, Mike R, Martins, Mila Ferraz de Oliveira, Holmgren, Milena, Almeida, Morgana, Dias, Murilo S, Espírito Santo, Nádia Barbosa, Benone, Naraiana Loureiro, Ivanauskas, Natalia Macedo, Medeiros, Natália, Targhetta, Natalia, Félix, Nathalia Silva, Ferreira, Nelson, Hamada, Neusa, Campos, Nubia, Giehl, Nubia França da Silva, Metcalf, Oliver Charles, Silva, Otávio Guilherme Morais da, Cerqueira, Pablo Vieira, Moser, Pamela, Miranda, Patrícia Nakayama, Peruquetti, Patricia Santos Ferreira, Alverga, Paula Palhares de Polari, Prist, Paula, Souto, Paula, Brando, Paulo, Pompeu, Paulo dos Santos, Barni, Paulo Eduardo, Graça, Paulo Mauricio de Alencastro, Morandi, Paulo S, Cruz, Paulo Vilela, i Silva, Pedro Giovân da, Bispo, Pitágoras C, Camargo, Plínio Barbosa de, Sarmento, Priscila S de M, Souza, Priscila, Andrade, Rafael Barreto de, Braga, Rafael Benzi, Boldrini, Rafael, Bastos, Rafael Costa, Assis, Rafael Leandro de, Salomão, Rafael P, Leitão, Rafael Pereira, Mendes, Raimundo NG, Carpanedo, Rainiellen de Sá, Melinski, Ramiro Dário, Ligeiro, Raphael, e Pérez, Raúl Enriqu Pirela, Barbosa, Reinaldo Imbrozio, Cajaiba, Reinaldo Lucas, Silvano, Renato Azevedo Matias, Salomão, Renato Portela, Hilário, Renato Richard, Martins, Renato Tavares, Perdiz, Ricardo de Oliveira, Vicente, Ricardo Eduardo, Silva, Ricardo José da, Koroiva, Ricardo, Solar, Ricardo, Silva, Richarlly da Costa, s de Lima, Robson Borge, Silva, Robson dos Santos Alves da, Mariano, Rodolfo, Ribeiro, Rodrigo Arison Barbosa, Fadini, Rodrigo Ferreira, Oliveira, Rodrigo Leonardo Costa de, Feitosa, Rodrigo Machado, Matavelli, Rodrigo, Mormul, Roger Paulo, da Silva, Rogério Rosa, Zanetti, Ronald, Barthem, Ronaldo, Almeida, Rony Peterson Santos, Ribeiro, Sabina Cerruto, r Costa Neto, Salustiano Vila da, Nienow, Samuel, Oliveira, Sérgio Augusto Vidal de, Borges, Sérgio Henrique, Milheiras, Sérgio, Ribeiro, Sérvio Pontes, Couceiro, Sheyla Regina Marques, Sousa, Sidney Araújo de, Rodrigues, Silvia Barbosa, Dutra, Silvia Leitão, Mahood, Simon, Vieira, Simone Aparecida, Arrolho, Solange, Silva, Sonaira Souza da, Triana, Stefania Pinzón, Laurance, Susan, Kunz, Sustanis Horn, Alvarado, Swanni T, Rodrigues, Taís Helena Araujo, Santos, Talitha Ferreira dos, Machado, Tatiana Lemos da Silva, Feldpausch, Ted R, Sousa, Thaiane, Michelan, Thaisa Sala, Emilio, Thaise, Brito, Thaline de Freitas, André, Thiago, Barbosa, Thiago Augusto Pedroso, Miguel, Thiago Barros, Izzo, Thiago Junqueira, Laranjeiras, Thiago Orsi, Mendes, Thiago Pereira, Silva, Thiago Sanna Freire, Krolow, Tiago Kütter, Begot, Tiago Octavio, Baker, Timothy R, Domingues, Tomas F, Giarrizzo, Tommaso, Bentos, Tony Vizcarra, Haugaasen, Torbjørn, Peixoto, Ualerson, Pozzobom, Ully Mattilde, Korasaki, Vanesca, Ribeiro, Vanessa Soares, Scudeller, Veridiana Vizoni, Oliveira, Victor Hugo Fonseca, Landeiro, Victor Lemes, Santos Ferreira, Victor Rennan, Silva, Victória de Nazaré Gama, Gomes, Vitor Hugo Freitas, Oliveira, Vívian Campos de, Firmino, Viviane, Santiago, Wagner Tadeu Vieira, Beiroz, Wallace, Almeida, Wanessa Rejane de, Oliveira, Washington Luis de, Silva, Wegliane Campelo da, Castro, Wendeson, Dáttilo, Wesley, Cruz, Wesley Jonatar Alves da, Silva, Wheriton Fernando Moreira da, Magnusson, William E, Laurance, William, Milliken, William, Paula, William Sousa de, Malhi, Yadvinder, Shimabukuro, Yosio Edemir, Lima, Ysadhora Gomes de, Shimano, Yulie, and Feitosa, Yuri
- Abstract
Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear understanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5,6,7 vast areas of the tropics remain understudied.8,9,10,11 In the American tropics, Amazonia stands out as the world's most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepresented in biodiversity databases.13,14,15 To worsen this situation, human-induced modifications16,17 may eliminate pieces of the Amazon's biodiversity puzzle before we can use them to understand how ecological communities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple organism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region's vulnerability to environmental change. 15%–18% of the most neglected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lost.
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- 2023
3. Temperature modulates the secretome of the phytopathogenic fungus Lasiodiplodia theobromae
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Carina Félix, Ana Sofia Duarte, Rui Vitorino, Ana Catarina Guerreiro, Pedro Domingues, Antonio CM Correia, Artur Alves, and Ana Cristina Esteves
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Cytotoxicity ,extracellular enzymes ,phytopathogenic fungi ,Secretome ,global changes ,Plant culture ,SB1-1110 - Abstract
Environmental alterations modulate host-microorganism interactions. Little is known about how climate changes can trigger pathogenic features on symbiont or mutualistic microorganisms. Current climate models predict increased environmental temperatures.The exposing of phytopathogens to these changing conditions can have particularly relevant consequences for economically important species and for humans. The impact on pathogen/host interaction and the shift on their biogeographical range can induce different levels of virulence in new hosts, allowing massive losses in agricultural and health fields.Lasiodiplodia theobromae is a phytopathogenic fungus responsible for a number of diseases in various plants. It has also been described as an opportunist pathogen in humans, causing infections with different levels of severity. Lasiodiplodia theobromae has a high capacity of adaptation to different environments, such as woody plants, moist argillaceous soils or even humans, being able to grow and infect hosts in a wide range of temperatures (9ºC-39ºC). Nonetheless, the effect of an increase of temperature, as predicted in climate change models, on L. theobromae is unknown.Here we explore the effect of temperature on two strains of L. theobromae – an environmental strain CAA019, and a clinical strain, CBS339.90.We show that both strains are cytotoxic to mammalian cells but while the environmental strain is cytotoxic mainly at 25ºC, the clinical strain is cytotoxic mainly at 30ºC and 37ºC.Extracellular gelatinolytic, xylanolytic, amylolytic and cellulolytic activities at 25ºC and 37ºC were characterized by zymography and the secretome of both strains grown at 25ºC, 30ºC and 37ºC were characterized by electrophoresis and by Orbitrap LC-MS/MS. More than 75% of the proteins were identified, mostly enzymes (glycosyl hydrolases and proteases). The strains showed different protein profiles, which were affected by growth temperature. Also, strain specific proteins were identified, such as a putative f5/8 type c domain protein, known for being involved in pathogenesis, by strain CAA019 and a putative tripeptidyl-peptidase 1 protein, by strain CBS339.90.We showed that temperature modulates the secretome of L. theobromae. This modulation may be associated with host-specificity requirements. We show that the study of abiotic factors, such as temperature, is crucial to understand host/pathogen interactions and its impacts on disease.
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- 2016
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4. Nitrogen increases early-stage and slows late-stage decomposition across diverse grasslands
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Gill, AL, Adler, PB, Borer, ET, Buyarski, CR, Cleland, EE, D'Antonio, CM, Davies, KF, Gruner, DS, Harpole, WS, Hofmockel, KS, MacDougall, AS, McCulley, RL, Melbourne, BA, Moore, JL, Morgan, John, Risch, AC, Schütz, M, Seabloom, EW, Wright, JP, Yang, LH, Hobbie, SE, and Wiley-Blackwell Publishing Ltd.
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nitrogen deposition ,50399 Soil Sciences not elsewhere classified ,FOS: Agriculture, forestry and fisheries ,grasslands ,Nutrient Network (NutNet) ,Life Sciences ,litter decomposition ,phosphorus ,nitrogen - Abstract
To evaluate how increased anthropogenic nutrient inputs alter carbon cycling in grasslands, we conducted a litter decomposition study across 20 temperate grasslands on three continents within the Nutrient Network, a globally distributed nutrient enrichment experiment We determined the effects of addition of experimental nitrogen (N), phosphorus (P) and potassium plus micronutrient (Kμ) on decomposition of a common tree leaf litter in a long-term study (maximum of 7 years; exact deployment period varied across sites). The use of higher order decomposition models allowed us to distinguish between the effects of nutrients on early- versus late-stage decomposition. Across continents, the addition of N (but not other nutrients) accelerated early-stage decomposition and slowed late-stage decomposition, increasing the slowly decomposing fraction by 28% and the overall litter mean residence time by 58%. Synthesis. Using a novel, long-term cross-site experiment, we found widespread evidence that N enhances the early stages of above-ground plant litter decomposition across diverse and widespread temperate grassland sites but slows late-stage decomposition. These findings were corroborated by fitting the data to multiple decomposition models and have implications for N effects on soil organic matter formation. For example, following N enrichment, increased microbial processing of litter substrates early in decomposition could promote the production and transfer of low molecular weight compounds to soils and potentially enhance the stabilization of mineral-associated organic matter. By contrast, by slowing late-stage decomposition, N enrichment could promote particulate organic matter (POM) accumulation. Such hypotheses deserve further testing.
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- 2022
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5. Seawater is a reservoir of multi-resistant Escherichia coli, including strains hosting plasmid-mediated quinolones resistance and extended-spectrum beta-lactamases genes
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Marta S. Alves, Anabela ePereira, Susana M. Araujo, Bruno B Castro, Antonio CM Correia, and Isabel eHenriques
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Escherichia coli ,Water Quality ,antibiotic resistance ,faecal pollution ,microbial source tracking. ,Microbiology ,QR1-502 - Abstract
The aim of this study was to examine antibiotic resistance (AR) dissemination in coastal water, considering the contribution of different sources of faecal contamination. Samples were collected in Berlenga, an uninhabited island classified as Natural Reserve and visited by tourists for aquatic recreational activities. To achieve our aim, AR in Escherichia coli isolates from coastal water was compared to AR in isolates from two sources of faecal contamination: human-derived sewage and seagull faeces. Isolation of E. coli was done on Chromocult agar. Based on genetic typing 414 strains were established. Distribution of E. coli phylogenetic groups was similar among isolates of all sources. Resistances to streptomycin, tetracycline, cephalothin and amoxicillin were the most frequent. Higher rates of AR were found among seawater and faeces isolates, except for last-line antibiotics used in human medicine. Multi-resistance rates in isolates from sewage and seagull faeces (29% and 32%) were lower than in isolates from seawater (39%). Seawater AR profiles were similar to those from seagull faeces and differed significantly from sewage AR profiles. Nucleotide sequences matching resistance genes blaTEM, sul1, sul2, tet(A) and tet(B), were present in isolates of all sources. Genes conferring resistance to 3rd generation cephalosporins were detected in seawater (blaCTX-M-1 and blaSHV-12) and seagull faeces (blaCMY-2). Plasmid-mediated determinants of resistance to quinolones were found: qnrS1 in all sources and qnrB19 in seawater and seagull faeces. Our results show that seawater is a relevant reservoir of AR and that seagulls are an efficient vehicle to spread human-associated bacteria and resistance genes. The E. coli resistome recaptured from Berlenga coastal water was mainly modulated by seagulls-derived faecal pollution. The repertoire of resistance genes covers antibiotics critically important for humans, a potential risk for human health.
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- 2014
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6. The contribution of Escherichia coli from human and animal sources to the integron gene pool in coastal waters
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Alexandra eMoura, Susana eAraújo, Marta eAlves, Isabel eHenriques, Anabela ePereira, and Antonio CM Correia
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replicon typing ,environmental reservoirs ,microbial risk assessment ,multi-resistance ,integron diversity ,Enterobacteriaceae. ,Microbiology ,QR1-502 - Abstract
To understand the contribution of animal- and human-derived fecal pollution sources in shaping integron prevalence and diversity in beach waters, 414 Escherichia coli strains were collected from beach waters (BW, n=166), seagull feces (SF, n=179) and wastewaters (WW, n=69), on the World Biosphere Reserve of the Berlenga Island, Portugal. Statistical differences were found between the prevalence of integrons in BW (21%) and WW (10%), but not between BW and SF (19%). The majority of integrase-positive (intI+)-strains affiliated to commensal phylogroups B1 (37%), A0 (24%) and A1 (20%). Eighteen different gene cassette arrays were detected, most of them coding for resistances to aminoglycosides, trimethoprim, chloramphenicol and quaternary ammonia compounds. Common arrays were found among strains from different sources. Multi-resistance to three or more different classes of antibiotics was observed in 89%, 82% and 57% of intI+-strains from BW, SF and WW, respectively. Plasmids were detected in 79% of strains (60/76) revealing a high diversity of replicons in all sources, mostly belonging to IncF (Frep, FIA and FIB subgroups), IncI1, IncN, IncY and IncK incompatibility groups. In 20% (15/76) of strains, integrons were successfully mobilized through conjugation to E. coli CV601. Results obtained support the existence of a diverse integron pool in the E. coli strains from this coastal environment, associated with different resistance traits and plasmid incompatibility groups, mainly shaped by animal fecal pollution inputs. These findings underscore the role of wild life in dissemination of integrons and antibiotic resistance traits in natural environments.
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- 2014
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7. A bradykinin-potentiating peptide (BPP-10c) from Bothrops jararaca induces changes in seminiferous tubules
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Joyce M Gilio, Fernanda CV Portaro, Maria I Borella, Claudiana Lameu, Antonio CM Camargo, and Carlos Alberto-Silva
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Bradykinin-potentiating peptide ,Snake venom ,Angiotensin-converting enzyme ,Testis ,Seminiferous epithelium ,Arctic medicine. Tropical medicine ,RC955-962 ,Toxicology. Poisons ,RA1190-1270 ,Zoology ,QL1-991 - Abstract
Background The testis-specific isoform of angiotensin-converting enzyme (tACE) is exclusively expressed in germ cells during spermatogenesis. Although the exact role of tACE in male fertility is unknown, it clearly plays a critical function in spermatogenesis. The dipeptidase domain of tACE is identical to the C-terminal catalytic domain of somatic ACE (sACE). Bradykinin potentiating peptides (BPPs) from snake venoms are the first natural sACE inhibitors described and their structure-activity relationship studies were the basis for the development of antihypertensive drugs such as captopril. In recent years, it has been showed that a number of BPPs - including BPP-10c - are able to distinguish between the N- and C-active sites of sACE, what is not applicable to captopril. Considering the similarity between tACE and sACE (and since BPPs are able to distinguish between the two active sites of sACE), the effects of the BPP-10c and captopril on the structure and function of the seminiferous epithelium were characterized in the present study. BPP-10c and captopril were administered in male Swiss mice by intraperitoneal injection (4.7 μmol/kg for 15 days) and histological sections of testes were analyzed. Classification of seminiferous tubules and stage analysis were carried out for quantitative evaluation of germ cells of the seminiferous epithelium. The blood-testis barrier (BTB) permeability and distribution of claudin-1 in the seminiferous epithelium were analyzed by hypertonic fixative method and immunohistochemical analyses of testes, respectively. Results The morphology of seminiferous tubules from animals treated with BPP-10c showed an intense disruption of the epithelium, presence of atypical multinucleated cells in the lumen and degenerated germ cells in the adluminal compartment. BPP-10c led to an increase in the number of round spermatids and total support capacity of Sertoli cell in stages I, V, VII/VIII of the seminiferous epithelium cycle, without affecting BTB permeability and the distribution of claudin-1 in the seminiferous epithelium. Interestingly, no morphological or morphometric alterations were observed in animals treated with captopril. Conclusions The major finding of the present study was that BPP-10c, and not captopril, modifies spermatogenesis by causing hyperplasia of round spermatids in stages I, V, and VII/VIII of the spermatogenic cycle.
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- 2013
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8. Systemic site of action for pressor effect of angiotensin II injected into the fourth cerebral ventricle of rats?
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Lindsey, Charles J, Pesquero, João B, Fior-Chadi, Debora R, Yu, Yun-Guo, Merjan, Antonio J, and Paiva, Antonio CM
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- 2002
9. Interaction of a non-peptide agonist with angiotensin II AT1 receptor mutants
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Miyakawa, Ayumi A, Pesquero, João B, Hjorth, Siv A, Schwartz, Thue W, Oliveira, Laerte, Paiva, Antonio CM, and Costa-Neto, Claudio M
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- 2002
10. A bradykinin-potentiating peptide (BPP-10c) from Bothrops jararaca induces changes in seminiferous tubules
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Gilio, Joyce M, primary, Portaro, Fernanda CV, additional, Borella, Maria I, additional, Lameu, Claudiana, additional, Camargo, Antonio CM, additional, and Alberto-Silva, Carlos, additional
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- 2013
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11. Systemic site of action for pressor effect of angiotensin II injected into the fourth cerebral ventricle of rats?
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Pesquero, João B, primary, Fior-Chadi, Debora R, additional, Yu, Yun-Guo, additional, Merjan, Antonio J, additional, Lindsey, Charles J, additional, and Paiva, Antonio CM, additional
- Published
- 2002
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12. Interaction of a non-peptide agonist with angiotensin II AT1receptor mutants
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Costa-Neto, Claudio M, primary, Miyakawa, Ayumi A, additional, Pesquero, João B, additional, Oliveira, Laerte, additional, Hjorth, Siv A, additional, Schwartz, Thue W, additional, and Paiva, Antonio CM, additional
- Published
- 2002
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13. The IT Observatory
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Tong, Kent K.I., primary and Sousa, Antonio CM, additional
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- 1999
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14. Role of Ca+‐dependent K‐channels in the membrane potential and contractility of aorta from spontaneously hypertensive rats
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Silva, Eneida G., primary, Frediani‐Neto, Eugenio, additional, Ferreira, Alice T., additional, Paiva, Antonio CM., additional, and Paiva, Therezinha B., additional
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- 1994
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15. Role of sand in the domination of hard substrata by the intertidal alga Rhodomela larix
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D'Antonio, CM, primary
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- 1986
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16. On the anniversary of the Maui fires, a call for Indigenous land care to mitigate future disasters.
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Farrant DN, Trauernicht C, Kagawa-Viviani A, Giambelluca TW, and D'Antonio CM
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- Humans, Wildfires, Fires, Anniversaries and Special Events, Disasters history
- Abstract
Competing Interests: Competing interests statement:The authors declare no competing interest.
- Published
- 2024
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17. Extreme drought impacts have been underestimated in grasslands and shrublands globally.
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Smith MD, Wilkins KD, Holdrege MC, Wilfahrt P, Collins SL, Knapp AK, Sala OE, Dukes JS, Phillips RP, Yahdjian L, Gherardi LA, Ohlert T, Beier C, Fraser LH, Jentsch A, Loik ME, Maestre FT, Power SA, Yu Q, Felton AJ, Munson SM, Luo Y, Abdoli H, Abedi M, Alados CL, Alberti J, Alon M, An H, Anacker B, Anderson M, Auge H, Bachle S, Bahalkeh K, Bahn M, Batbaatar A, Bauerle T, Beard KH, Behn K, Beil I, Biancari L, Blindow I, Bondaruk VF, Borer ET, Bork EW, Bruschetti CM, Byrne KM, Cahill JF Jr, Calvo DA, Carbognani M, Cardoni A, Carlyle CN, Castillo-Garcia M, Chang SX, Chieppa J, Cianciaruso MV, Cohen O, Cordeiro AL, Cusack DF, Dahlke S, Daleo P, D'Antonio CM, Dietterich LH, S Doherty T, Dubbert M, Ebeling A, Eisenhauer N, Fischer FM, Forte TGW, Gebauer T, Gozalo B, Greenville AC, Guidoni-Martins KG, Hannusch HJ, Vatsø Haugum S, Hautier Y, Hefting M, Henry HAL, Hoss D, Ingrisch J, Iribarne O, Isbell F, Johnson Y, Jordan S, Kelly EF, Kimmel K, Kreyling J, Kröel-Dulay G, Kröpfl A, Kübert A, Kulmatiski A, Lamb EG, Larsen KS, Larson J, Lawson J, Leder CV, Linstädter A, Liu J, Liu S, Lodge AG, Longo G, Loydi A, Luan J, Curtis Lubbe F, Macfarlane C, Mackie-Haas K, Malyshev AV, Maturano-Ruiz A, Merchant T, Metcalfe DB, Mori AS, Mudongo E, Newman GS, Nielsen UN, Nimmo D, Niu Y, Nobre P, O'Connor RC, Ogaya R, Oñatibia GR, Orbán I, Osborne B, Otfinowski R, Pärtel M, Penuelas J, Peri PL, Peter G, Petraglia A, Picon-Cochard C, Pillar VD, Piñeiro-Guerra JM, Ploughe LW, Plowes RM, Portales-Reyes C, Prober SM, Pueyo Y, Reed SC, Ritchie EG, Rodríguez DA, Rogers WE, Roscher C, Sánchez AM, Santos BA, Cecilia Scarfó M, Seabloom EW, Shi B, Souza L, Stampfli A, Standish RJ, Sternberg M, Sun W, Sünnemann M, Tedder M, Thorvaldsen P, Tian D, Tielbörger K, Valdecantos A, van den Brink L, Vandvik V, Vankoughnett MR, Guri Velle L, Wang C, Wang Y, Wardle GM, Werner C, Wei C, Wiehl G, Williams JL, Wolf AA, Zeiter M, Zhang F, Zhu J, Zong N, and Zuo X
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- Grassland, Carbon Cycle, Climate Change, Receptor Protein-Tyrosine Kinases, Droughts, Ecosystem
- Abstract
Climate change is increasing the frequency and severity of short-term (~1 y) drought events-the most common duration of drought-globally. Yet the impact of this intensification of drought on ecosystem functioning remains poorly resolved. This is due in part to the widely disparate approaches ecologists have employed to study drought, variation in the severity and duration of drought studied, and differences among ecosystems in vegetation, edaphic and climatic attributes that can mediate drought impacts. To overcome these problems and better identify the factors that modulate drought responses, we used a coordinated distributed experiment to quantify the impact of short-term drought on grassland and shrubland ecosystems. With a standardized approach, we imposed ~a single year of drought at 100 sites on six continents. Here we show that loss of a foundational ecosystem function-aboveground net primary production (ANPP)-was 60% greater at sites that experienced statistically extreme drought (1-in-100-y event) vs. those sites where drought was nominal (historically more common) in magnitude (35% vs. 21%, respectively). This reduction in a key carbon cycle process with a single year of extreme drought greatly exceeds previously reported losses for grasslands and shrublands. Our global experiment also revealed high variability in drought response but that relative reductions in ANPP were greater in drier ecosystems and those with fewer plant species. Overall, our results demonstrate with unprecedented rigor that the global impacts of projected increases in drought severity have been significantly underestimated and that drier and less diverse sites are likely to be most vulnerable to extreme drought., Competing Interests: Competing interests statement:The authors declare no competing interest.
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- 2024
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18. Isoscapes of remnant and restored Hawaiian montane forests reveal differences in biological nitrogen fixation and carbon inputs.
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Wall CB, Swift SOI, D'Antonio CM, Gebauer G, and Hynson NA
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- Hawaii, Nitrogen Fixation, Forests, Trees, Poaceae, Carbon, Nitrogen, Soil, Water, Ecosystem, Rubus
- Abstract
Deforestation and subsequent land-use conversion has altered ecosystems and led to negative effects on biodiversity. To ameliorate these effects, nitrogen-fixing (N
2 -fixing) trees are frequently used in the reforestation of degraded landscapes, especially in the tropics; however, their influence on ecosystem properties such as nitrogen (N) availability and carbon (C) stocks are understudied. Here, we use a 30-y old reforestation site of outplanted native N2 -fixing trees ( Acacia koa ) dominated by exotic grass understory, and a neighboring remnant forest dominated by A. koa canopy trees and native understory, to assess whether restoration is leading to similar N and C biogeochemical landscapes and soil and plant properties as a target remnant forest ecosystem. We measured nutrient contents and isotope values (δ15 N, δ13 C) in soils, A. koa , and non-N2 -fixing understory plants ( Rubus spp.) and generated δ15 N and δ13 C isoscapes of the two forests to test for (1) different levels of biological nitrogen fixation (BNF) and its contribution to non-N2 -fixing understory plants, and (2) the influence of historic land conversion and more recent afforestation on plant and soil δ13 C. In the plantation, A. koa densities were higher and foliar δ15 N values for A. koa and Rubus spp. were lower than in the remnant forest. Foliar and soil isoscapes also showed a more homogeneous distribution of low δ15 N values in the plantation and greater influence of A. koa on neighboring plants and soil, suggesting greater BNF. Foliar δ13 C also indicated higher water use efficiency (WUEi ) in the plantation, indicative of differences in plant-water relations or soil water status between the two forest types. Plantation soil δ13 C was higher than the remnant forest, consistent with greater contributions of exotic C4 -pasture grasses to soil C pools, possibly due to facilitation of non-native grasses by the dense A. koa canopy. These findings are consequential for forest restoration, as they contribute to the mounting evidence that outplanting N2 -fixing trees produces different biogeochemical landscapes than those observed in reference ecosystems, thereby influencing plant-soil interactions which can influence restoration outcomes., Competing Interests: The authors declare that they have no competing interests., (© 2023 Wall et al.)- Published
- 2023
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19. Assessing Health Care Professionals' Mindset in Adopting Telemedicine Post COVID-19: Pilot Questionnaire Study.
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Naghdi R, Nguyen G, Vazquez CM, Antonio CM, Cabrera C, Chandra A, and Chok J
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Background: Amidst the COVID-19 pandemic, the traditional health care model has evolved toward a more patient-centric model. In relation to this trend, digital health services have seen an acceleration, which may have significant implications for the health care model. Due to the impact of COVID-19 on health care facilities, it is important to explore health professionals' willingness to adopt a patient-centric digital health delivery model for medicine and health care., Objective: The aim of this study was to pilot a survey that assesses the impact and implementation of telehealth in view of health care providers prior to and post COVID-19., Methods: A total of 26 volunteer health care professionals participated in the pilot study, of which 19/26 (73%) completed the general demographics portion. Among these respondents, 9/26 (35%) completed the entirety of the survey. The questionnaire included questions relating to general demographics, accessibility and benefits, usability, and engagements with telemedicine. Participants were randomly assigned to 1 of the 4 questionnaire designs (A-D) based on their expertise in telehealth. Of the 9 total participants who completed their randomly assigned questionnaire, 1 (11%) was randomly assigned to A, 3 (33%) were randomly assigned to B, 2 (22%) were randomly assigned to C, and 3 (33%) were randomly assigned to D., Results: Responses and data from the study questionnaire were collected from Qualtrics. Microsoft Excel was used for data organization. Due to limited responses and data, no advanced statistical software was implemented. From the 9 participants who completed the entirety of the survey, responses from those with telehealth experience (n=4) showed that telehealth was preferred for follow-ups, lab results, and consultations, and that with telehealth, there was greater flexibility with appointment times and a decrease in the number of patients seen. Among the 4 health care providers with telehealth experience, all of them believed it improved accessibility and reduced physical barriers; health care professionals believed telehealth reduced translational barriers with patients. Among health care professionals without telehealth experience (n=5), 60% (3/5) reported a decrease in appointments for in-office visits post COVID-19 and strongly agreed or agreed that telehealth could influence the quality of care for patients. All 5 participants also reported no general concerns about telehealth prior to the pandemic and agreed that it would provide accessibility for patients., Conclusions: Preliminary findings of our pilot study showed initial support of a dynamical shift within the health care model due to the rise in the use of telehealth services between health care providers and patients but no statistically significant results. Further research and investigation with a larger sample size is warranted to better understand the mindset of health care professionals in adopting telemedicine post COVID-19., (©Rozhin Naghdi, Gianhu Nguyen, Cecile Maria Vazquez, Christian Mark Antonio, Carlos Cabrera, Austin Chandra, Jay Chok. Originally published in JMIR Formative Research (https://formative.jmir.org), 02.06.2023.)
- Published
- 2023
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20. Patterns and Distribution of Botryosphaeriaceae Fungi Related to Dieback in Big Berry Manzanita.
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Drake-Schultheis L, D'Antonio CM, and Oono R
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- Fruit microbiology, Plant Diseases microbiology, Droughts, Wood, Arctostaphylos
- Abstract
Dieback and mortality in wildland plant species due to climate change have been on the rise in recent decades, and latent fungal pathogens might play a significant role in these events. During a severe multiyear drought, canopy dieback associated with latent pathogens in the Botryosphaeriaceae ( Bot ) family was observed in stands of a dominant shrub species, big berry manzanita ( Arctostaphylos glauca ), across chaparral landscapes in California. These fungi are significant pathogens of woody agricultural species, especially in hosts experiencing stress, and have become a threat to economically important crops worldwide. However, little is known regarding their occurrence, distribution, and impact in wildland systems. We conducted a field survey of 300 A. glauca shrubs across an elevational gradient to identify Bot species infection as it relates to (i) A. glauca dieback severity and (ii) landscape variables associated with plant drought stress. Our results show that Bots are widely infecting A. glauca across the landscape, and there is a significant correlation between elevation and dieback severity. Dieback severity was significantly higher at lower elevations, suggesting that infected shrubs at lower elevations are at greater risk than those at higher elevations. Furthermore, two Bot species, Neofusicoccum australe and Botryosphaeria dothidea , were most frequently isolated, with N. australe being the most common and, based on haplotype analysis, likely the most recently introduced of the two. Our results confirm the wide distribution of latent Bot fungi in a wild shrubland system and provide valuable insight into areas of greatest risk for future shrub dieback and mortalit y . These findings could be particularly useful for informing future wildlands management strategies with regard to introduced latent pathogens.
- Published
- 2022
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21. Can the impact of canopy trees on soil and understory be altered using litter additions?
- Author
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Yelenik SG, Rehm EM, and D'Antonio CM
- Subjects
- Biomass, Ecosystem, Forests, Nitrogen, Poaceae, Soil, Trees
- Abstract
Trees can have large effects on soil nutrients in ways that alter succession, particularly in the case of nitrogen-(N)-fixing trees. In Hawai'i, forest restoration relies heavily on use of a native N-fixing tree, Acacia koa (koa), but this species increases soil-available N and likely facilitates competitive dominance of exotic pasture grasses. In contrast, Metrosideros polymorpha ('ōhi'a), the dominant native tree in Hawai'i, is less often planted because it is slow growing; yet it is typically associated with lower soil N and grass biomass, and greater native understory recruitment. We experimentally tested whether it is possible to reverse high soil N under koa by adding 'ōhi'a litter, using additions of koa litter or no litter as controls, over 2.5 yr. We then quantified natural litterfall and decomposition rates of 'ōhi'a and koa litter to place litter additions in perspective. Finally, we quantified whether litter additions altered grass biomass and if this had effects on native outplants. Adding 'ōhi'a litter increased soil carbon, but increased rather than decreased inorganic soil N pools. Contrary to expectations, koa litter decomposed more slowly than 'ōhi'a, although it released more N per unit of litter. We saw no reduction in grass biomass due to 'ōhi'a litter addition, and no change in native outplanted understory survival or growth. We conclude that the high N soil conditions under koa are difficult to reverse. However, we also found that outplanted native woody species were able to decrease exotic grass biomass over time, regardless of the litter environment, making this a better strategy for lowering exotic species impacts., (© 2021 by the Ecological Society of America.)
- Published
- 2022
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22. Mechanisms of severe dieback and mortality in a classically drought-tolerant shrubland species (Arctostaphylos glauca).
- Author
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Drake-Schultheis L, Oono R, and D'Antonio CM
- Subjects
- Droughts, Photosynthesis, Plant Leaves, Arctostaphylos, Ascomycota
- Abstract
Premise: Mortality events involving drought and pathogens in natural plant systems are on the rise due to global climate change. In Santa Barbara, California, United States, big berry manzanita (Arctostaphylos glauca) has experienced canopy dieback related to a multi-year drought and infection from fungal pathogens in the Botryosphaeriaceae family. A greenhouse experiment was conducted using Neofusicoccum australe to test the specific influences of drought and fungal infection on A. glauca., Methods: A full factorial design was used to compare four treatment groups (drought + inoculation; drought - inoculation; watering + inoculation; and control: watering - inoculation). Data were collected for 10 weeks on stress symptoms, changes in leaf fluorescence and photosynthesis, and mortality., Results: Results indicated significant effects of watering and inoculation treatments on net photosynthesis, dark-adapted fluorescence, and disease symptom severity (P < 0.05), and a strong correlation was found between physiological decline and visible stress (P < 0.0001). Mortality differed between treatments, with all groups except for the control experiencing mortality (43% mortality in drought - inoculation, 83% in watering - inoculation, and 100% in drought + inoculation). A Kaplan-Meier survival analysis showed drought + inoculation to have the least estimated survivorship compared to all other treatment groups., Conclusions: In addition to a possible synergistic interaction between drought and fungal infection in disease onset and mortality rates in A. glauca, these results indicate that young, non-drought-stressed plants are susceptible to mortality from N. australe infection, with important implications for the future of wildland shrub communities., (© 2020 Botanical Society of America.)
- Published
- 2020
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23. Ocean acidification alters morphology of all otolith types in Clark's anemonefish ( Amphiprion clarkii ).
- Author
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Holmberg RJ, Wilcox-Freeburg E, Rhyne AL, Tlusty MF, Stebbins A, Nye SW Jr, Honig A, Johnston AE, San Antonio CM, Bourque B, and Hannigan RE
- Abstract
Ocean acidification, the ongoing decline of surface ocean pH and [CO 3 2 - ] due to absorption of surplus atmospheric CO
2 , has far-reaching consequences for marine biota, especially calcifiers. Among these are teleost fishes, which internally calcify otoliths, critical elements of the inner ear and vestibular system. There is evidence in the literature that ocean acidification increases otolith size and alters shape, perhaps impacting otic mechanics and thus sensory perception. Here, larval Clark's anemonefish, Amphiprion clarkii (Bennett, 1830), were reared in various seawater pCO2 /pH treatments analogous to future ocean scenarios. At the onset of metamorphosis, all otoliths were removed from each individual fish and analyzed for treatment effects on morphometrics including area, perimeter, and circularity; scanning electron microscopy was used to screen for evidence of treatment effects on lateral development, surface roughness, and vaterite replacement. The results corroborate those of other experiments with other taxa that observed otolith growth with elevated pCO2 , and provide evidence that lateral development and surface roughness increased as well. Both sagittae exhibited increasing area, perimeter, lateral development, and roughness; left lapilli exhibited increasing area and perimeter while right lapilli exhibited increasing lateral development and roughness; and left asterisci exhibited increasing perimeter, roughness, and ellipticity with increasing pCO2 . Right lapilli and left asterisci were only impacted by the most extreme pCO2 treatment, suggesting they are resilient to any conditions short of aragonite undersaturation, while all other impacted otoliths responded to lower concentrations. Finally, fish settlement competency at 10 dph was dramatically reduced, and fish standard length marginally reduced with increasing pCO2 . Increasing abnormality and asymmetry of otoliths may impact inner ear function by altering otolith-maculae interactions., Competing Interests: The authors declare there are no competing interests.- Published
- 2019
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24. Change in dominance determines herbivore effects on plant biodiversity.
- Author
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Koerner SE, Smith MD, Burkepile DE, Hanan NP, Avolio ML, Collins SL, Knapp AK, Lemoine NP, Forrestel EJ, Eby S, Thompson DI, Aguado-Santacruz GA, Anderson JP, Anderson TM, Angassa A, Bagchi S, Bakker ES, Bastin G, Baur LE, Beard KH, Beever EA, Bohlen PJ, Boughton EH, Canestro D, Cesa A, Chaneton E, Cheng J, D'Antonio CM, Deleglise C, Dembélé F, Dorrough J, Eldridge DJ, Fernandez-Going B, Fernández-Lugo S, Fraser LH, Freedman B, García-Salgado G, Goheen JR, Guo L, Husheer S, Karembé M, Knops JMH, Kraaij T, Kulmatiski A, Kytöviita MM, Lezama F, Loucougaray G, Loydi A, Milchunas DG, Milton SJ, Morgan JW, Moxham C, Nehring KC, Olff H, Palmer TM, Rebollo S, Riginos C, Risch AC, Rueda M, Sankaran M, Sasaki T, Schoenecker KA, Schultz NL, Schütz M, Schwabe A, Siebert F, Smit C, Stahlheber KA, Storm C, Strong DJ, Su J, Tiruvaimozhi YV, Tyler C, Val J, Vandegehuchte ML, Veblen KE, Vermeire LT, Ward D, Wu J, Young TP, Yu Q, and Zelikova TJ
- Subjects
- Animals, Desert Climate, Biodiversity, Grassland, Herbivory, Mammals physiology, Plants
- Abstract
Herbivores alter plant biodiversity (species richness) in many of the world's ecosystems, but the magnitude and the direction of herbivore effects on biodiversity vary widely within and among ecosystems. One current theory predicts that herbivores enhance plant biodiversity at high productivity but have the opposite effect at low productivity. Yet, empirical support for the importance of site productivity as a mediator of these herbivore impacts is equivocal. Here, we synthesize data from 252 large-herbivore exclusion studies, spanning a 20-fold range in site productivity, to test an alternative hypothesis-that herbivore-induced changes in the competitive environment determine the response of plant biodiversity to herbivory irrespective of productivity. Under this hypothesis, when herbivores reduce the abundance (biomass, cover) of dominant species (for example, because the dominant plant is palatable), additional resources become available to support new species, thereby increasing biodiversity. By contrast, if herbivores promote high dominance by increasing the abundance of herbivory-resistant, unpalatable species, then resource availability for other species decreases reducing biodiversity. We show that herbivore-induced change in dominance, independent of site productivity or precipitation (a proxy for productivity), is the best predictor of herbivore effects on biodiversity in grassland and savannah sites. Given that most herbaceous ecosystems are dominated by one or a few species, altering the competitive environment via herbivores or by other means may be an effective strategy for conserving biodiversity in grasslands and savannahs globally.
- Published
- 2018
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25. Boom-bust dynamics in biological invasions: towards an improved application of the concept.
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Strayer DL, D'Antonio CM, Essl F, Fowler MS, Geist J, Hilt S, Jarić I, Jöhnk K, Jones CG, Lambin X, Latzka AW, Pergl J, Pyšek P, Robertson P, von Schmalensee M, Stefansson RA, Wright J, and Jeschke JM
- Subjects
- Population Dynamics, Ecology, Introduced Species
- Abstract
Boom-bust dynamics - the rise of a population to outbreak levels, followed by a dramatic decline - have been associated with biological invasions and offered as a reason not to manage troublesome invaders. However, boom-bust dynamics rarely have been critically defined, analyzed, or interpreted. Here, we define boom-bust dynamics and provide specific suggestions for improving the application of the boom-bust concept. Boom-bust dynamics can arise from many causes, some closely associated with invasions, but others occurring across a wide range of ecological settings, especially when environmental conditions are changing rapidly. As a result, it is difficult to infer cause or predict future trajectories merely by observing the dynamic. We use tests with simulated data to show that a common metric for detecting and describing boom-bust dynamics, decline from an observed peak to a subsequent trough, tends to severely overestimate the frequency and severity of busts, and should be used cautiously if at all. We review and test other metrics that are better suited to describe boom-bust dynamics. Understanding the frequency and importance of boom-bust dynamics requires empirical studies of large, representative, long-term data sets that use clear definitions of boom-bust, appropriate analytical methods, and careful interpretations., (© 2017 John Wiley & Sons Ltd/CNRS.)
- Published
- 2017
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26. Can local adaptation explain varying patterns of herbivory tolerance in a recently introduced woody plant in North America?
- Author
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Long RW, Bush SE, Grady KC, Smith DS, Potts DL, D'Antonio CM, Dudley TL, Fehlberg SD, Gaskin JF, Glenn EP, and Hultine KR
- Abstract
Patterns of woody-plant mortality have been linked to global-scale environmental changes, such as extreme drought, heat stress, more frequent and intense fires, and episodic outbreaks of insects and pathogens. Although many studies have focussed on survival and mortality in response to specific physiological stresses, little attention has been paid to the role of genetic heritability of traits and local adaptation in influencing patterns of plant mortality, especially in non-native species. Tamarix spp. is a dominant, non-native riparian tree in western North America that is experiencing dieback in some areas of its range due to episodic herbivory by the recently introduced northern tamarisk leaf beetle ( Diorhabda carinulata ). We propose that genotype × environment interactions largely underpin current and future patterns of Tamarix mortality. We anticipate that (i) despite its recent introduction, and the potential for significant gene flow, Tamarix in western North America is generally adapted to local environmental conditions across its current range in part due to hybridization of two species; (ii) local adaptation to specific climate, soil and resource availability will yield predictable responses to episodic herbivory; and (iii) the ability to cope with a combination of episodic herbivory and increased aridity associated with climate change will be largely based on functional tradeoffs in resource allocation. This review focusses on the potential heritability of plant carbon allocation patterns in Tamarix , focussing on the relative contribution of acquired carbon to non-structural carbohydrate (NSC) pools versus other sinks as the basis for surviving episodic disturbance. Where high aridity and/or poor edaphic position lead to chronic stress, NSC pools may fall below a minimum threshold because of an imbalance between the supply of carbon and its demand by various sinks. Identifying patterns of local adaptation of traits related to resource allocation will improve forecasting of Tamarix population susceptibility to episodic herbivory.
- Published
- 2017
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27. Impact of fog drip versus fog immersion on the physiology of Bishop pine saplings.
- Author
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Baguskas SA, King JY, Fischer DT, D Antonio CM, and Still CJ
- Abstract
Fog-drip to the soil is the most obvious contribution of fog to the water budget of an ecosystem, but several studies provide convincing evidence that foliar absorption of fog water through leaf wetting events is also possible. The focus of our research was to assess the relative importance of fog drip and fog immersion (foliar wetting) on leaf gas-exchange rates and photosynthetic capacity of a coastal pine species, Bishop pine (Pinus muricata D.Don), a drought-sensitive species restricted to the fog belt of coastal California and offshore islands. In a controlled experiment, we manipulated fog water inputs to potted Bishop pine saplings during a 3 week dry-down period. Ten saplings were randomly assigned one of two fog treatments: (1) fog drip to the soil and canopy fog immersion, or (2) fog immersion alone. Five saplings were assigned the 'control' group and received no fog water inputs. We found that fog immersion alone significantly increased carbon assimilation rates and photosynthetic capacity of saplings as soil moisture declined compared with those that received no fog at all. The highest carbon assimilation rates were observed in saplings that also received fog drip. Soil moisture was 40% higher in the fog immersion compared with the control group during the dry-down, indicating a reduced demand for soil water in saplings that had only leaves wetted by canopy interception of fog. Leaf-level physiology is more strongly enhanced by fog drip compared with fog immersion, although the results of this study provide evidence that foliar absorption is a viable mechanism by which Bishop pines use fog water and that it can enhance instantaneous plant carbon gain and potentially whole plant productivity.
- Published
- 2017
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28. Climate modifies response of non-native and native species richness to nutrient enrichment.
- Author
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Flores-Moreno H, Reich PB, Lind EM, Sullivan LL, Seabloom EW, Yahdjian L, MacDougall AS, Reichmann LG, Alberti J, Báez S, Bakker JD, Cadotte MW, Caldeira MC, Chaneton EJ, D'Antonio CM, Fay PA, Firn J, Hagenah N, Harpole WS, Iribarne O, Kirkman KP, Knops JM, La Pierre KJ, Laungani R, Leakey AD, McCulley RL, Moore JL, Pascual J, and Borer ET
- Subjects
- Climate Change, Micronutrients metabolism, Nitrogen metabolism, Phosphorus metabolism, Plant Physiological Phenomena, Potassium metabolism, Biota physiology, Climate, Eutrophication, Grassland, Introduced Species
- Abstract
Ecosystem eutrophication often increases domination by non-natives and causes displacement of native taxa. However, variation in environmental conditions may affect the outcome of interactions between native and non-native taxa in environments where nutrient supply is elevated. We examined the interactive effects of eutrophication, climate variability and climate average conditions on the success of native and non-native plant species using experimental nutrient manipulations replicated at 32 grassland sites on four continents. We hypothesized that effects of nutrient addition would be greatest where climate was stable and benign, owing to reduced niche partitioning. We found that the abundance of non-native species increased with nutrient addition independent of climate; however, nutrient addition increased non-native species richness and decreased native species richness, with these effects dampened in warmer or wetter sites. Eutrophication also altered the time scale in which grassland invasion responded to climate, decreasing the importance of long-term climate and increasing that of annual climate. Thus, climatic conditions mediate the responses of native and non-native flora to nutrient enrichment. Our results suggest that the negative effect of nutrient addition on native abundance is decoupled from its effect on richness, and reduces the time scale of the links between climate and compositional change., (© 2016 The Author(s).)
- Published
- 2016
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29. Coastal fog during summer drought improves the water status of sapling trees more than adult trees in a California pine forest.
- Author
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Baguskas SA, Still CJ, Fischer DT, D'Antonio CM, and King JY
- Subjects
- California, Forests, Models, Biological, Seasons, Trees physiology, Droughts, Pinus physiology, Water physiology, Weather
- Abstract
Fog water inputs can offset seasonal drought in the Mediterranean climate of coastal California and may be critical to the persistence of many endemic plant species. The ability to predict plant species response to potential changes in the fog regime hinges on understanding the ways that fog can impact plant physiological function across life stages. Our study uses a direct metric of water status, namely plant water potential, to understand differential responses of adult versus sapling trees to seasonal drought and fog water inputs. We place these measurements within a water balance framework that incorporates the varying climatic and soil property impacts on water budgets and deficit. We conducted our study at a coastal and an inland site within the largest stand of the regionally endemic bishop pine (Pinus muricata D. Don) on Santa Cruz Island. Our results show conclusively that summer drought negatively affects the water status of sapling more than adult trees and that sapling trees are also more responsive to changes in shallow soil moisture inputs from fog water deposition. Moreover, between the beginning and end of a large, late-season fog drip event, water status increased more for saplings than for adults. Relative to non-foggy conditions, we found that fog water reduces modeled peak water deficit by 80 and 70 % at the inland and coastal sites, respectively. Results from our study inform mechanistically based predictions of how population dynamics of this and other coastal species may be affected by a warmer, drier, and potentially less foggy future.
- Published
- 2016
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30. The ghosts of trees past: savanna trees create enduring legacies in plant species composition.
- Author
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Stahlheber KA, Crispin KL, Anton C, and D'Antonio CM
- Subjects
- California, Environmental Monitoring, Species Specificity, Time Factors, Biodiversity, Grassland, Quercus physiology, Trees physiology
- Abstract
Isolated trees in savannas worldwide are known to modify their local environment and interact directly with neighboring plants. Less is known about how related tree species differ in their impacts on surrounding communities, how the effects of trees vary between years, and how composition might change following loss of the tree. To address these knowledge gaps, we explored the following questions: How do savanna trees influence the surrounding composition of herbaceous plants? Is the influence of trees consistent across different species and years? How does this change following the death of the tree? We surveyed herbaceous species composition and environmental attributes surrounding living and dead evergreen and deciduous Quercus trees in California (USA) savannas across several years that differed in their total precipitation. Oak trees of all species created distinct, homogenous understory communities dominated by exotic grasses across several sites. The composition of the low-diversity understory communities showed less interannual variation than open grassland, despite a two-fold difference in precipitation between the driest and wettest year. Vegetation composition was correlated with variation in soil properties, which were strongly affected by trees. Oaks also influenced the communities beyond the edge of the crown, but this depended on site and oak species. Low-diversity understory communities persisted up to 43 years following the death of the tree. A gradual decline in the effect of trees on the physical, environment following death did not result in vegetation becoming more similar to open grassland over time. The presence of long-lasting legacies of past tree crowns highlights the difficulty of assigning control of the current distribution of herbaceous species in grassland to their contemporary environment.
- Published
- 2015
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31. Taking the long view on the ecological effects of plant invasions.
- Author
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Flory SL and D'Antonio CM
- Subjects
- Ecosystem, Herbivory, Ecological and Environmental Phenomena, Introduced Species, Plants metabolism
- Published
- 2015
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32. Evaluating nurse plants for restoring native woody species to degraded subtropical woodlands.
- Author
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Yelenik SG, DiManno N, and D'Antonio CM
- Abstract
Harsh habitats dominated by invasive species are difficult to restore. Invasive grasses in arid environments slow succession toward more desired composition, yet grass removal exacerbates high light and temperature, making the use of "nurse plants" an appealing strategy. In this study of degraded subtropical woodlands dominated by alien grasses in Hawai'i, we evaluated whether individuals of two native (Dodonaea viscosa, Leptocophylla tameiameia) and one non-native (Morella faya) woody species (1) act as natural nodes of recruitment for native woody species and (2) can be used to enhance survivorship of outplanted native woody species. To address these questions, we quantified the presence and persistence of seedlings naturally recruiting beneath adult nurse shrubs and compared survival and growth of experimentally outplanted seedlings of seven native woody species under the nurse species compared to intact and cleared alien-grass plots. We found that the two native nurse shrubs recruit their own offspring, but do not act as establishment nodes for other species. Morella faya recruited even fewer seedlings than native shrubs. Thus, outplanting will be necessary to increase abundance and diversity of native woody species. Outplant survival was the highest under shrubs compared to away from them with few differences between nurse species. The worst habitat for native seedling survival and growth was within the unmanaged invasive grass matrix. Although the two native nurse species did not differentially affect outplant survival, D. viscosa is the most widespread and easily propagated and is thus more likely to be useful as an initial nurse species. The outplanted species showed variable responses to nurse habitats that we attribute to resource requirements resulting from their typical successional stage and nitrogen fixation capability.
- Published
- 2015
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33. Remote sensing analysis of vegetation recovery following short-interval fires in Southern California shrublands.
- Author
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Meng R, Dennison PE, D'Antonio CM, and Moritz MA
- Subjects
- California, Climate, Ecosystem, Plant Development, Plant Dispersal, Remote Sensing Technology, Fires, Plants
- Abstract
Increased fire frequency has been shown to promote alien plant invasions in the western United States, resulting in persistent vegetation type change. Short interval fires are widely considered to be detrimental to reestablishment of shrub species in southern California chaparral, facilitating the invasion of exotic annuals and producing "type conversion". However, supporting evidence for type conversion has largely been at local, site scales and over short post-fire time scales. Type conversion has not been shown to be persistent or widespread in chaparral, and past range improvement studies present evidence that chaparral type conversion may be difficult and a relatively rare phenomenon across the landscape. With the aid of remote sensing data covering coastal southern California and a historical wildfire dataset, the effects of short interval fires (<8 years) on chaparral recovery were evaluated by comparing areas that burned twice to adjacent areas burned only once. Twelve pairs of once- and twice-burned areas were compared using normalized burn ratio (NBR) distributions. Correlations between measures of recovery and explanatory factors (fire history, climate and elevation) were analyzed by linear regression. Reduced vegetation cover was found in some lower elevation areas that were burned twice in short interval fires, where non-sprouting species are more common. However, extensive type conversion of chaparral to grassland was not evident in this study. Most variables, with the exception of elevation, were moderately or poorly correlated with differences in vegetation recovery.
- Published
- 2014
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34. Integrated assessment of biological invasions.
- Author
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Ibáñez I, Diez JM, Miller LP, Olden JD, Sorte CJ, Blumenthal DM, Bradley BA, D'Antonio CM, Dukes JS, Early RI, Grosholz ED, and Lawler JJ
- Subjects
- Animals, Astacoidea physiology, Celastrus physiology, Demography, Mytilus physiology, United States, Introduced Species, Models, Biological, Models, Statistical
- Abstract
As the main witnesses of the ecological and economic impacts of invasions on ecosystems around the world, ecologists seek to provide the relevant science that informs managers about the potential for invasion of specific organisms in their region(s) of interest. Yet, the assorted literature that could inform such forecasts is rarely integrated to do so, and further, the diverse nature of the data available complicates synthesis and quantitative prediction. Here we present a set of analytical tools for synthesizing different levels of distributional and/or demographic data to produce meaningful assessments of invasion potential that can guide management at multiple phases of ongoing invasions, from dispersal to colonization to proliferation. We illustrate the utility of data-synthesis and data-model assimilation approaches with case studies of three well-known invasive species--a vine, a marine mussel, and a freshwater crayfish--under current and projected future climatic conditions. Results from the integrated assessments reflect the complexity of the invasion process and show that the most relevant climatic variables can have contrasting effects or operate at different intensities across habitat types. As a consequence, for two of the study species climate trends will increase the likelihood of invasion in some habitats and decrease it in others. Our results identified and quantified both bottlenecks and windows of opportunity for invasion, mainly related to the role of human uses of the landscape or to disruption of the flow of resources. The approach we describe has a high potential to enhance model realism, explanatory insight, and predictive capability, generating information that can inform management decisions and optimize phase-specific prevention and control efforts for a wide range of biological invasions.
- Published
- 2014
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35. Predicting invasion in grassland ecosystems: is exotic dominance the real embarrassment of richness?
- Author
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Seabloom EW, Borer ET, Buckley Y, Cleland EE, Davies K, Firn J, Harpole WS, Hautier Y, Lind E, MacDougall A, Orrock JL, Prober SM, Adler P, Alberti J, Anderson TM, Bakker JD, Biederman LA, Blumenthal D, Brown CS, Brudvig LA, Caldeira M, Chu C, Crawley MJ, Daleo P, Damschen EI, D'Antonio CM, DeCrappeo NM, Dickman CR, Du G, Fay PA, Frater P, Gruner DS, Hagenah N, Hector A, Helm A, Hillebrand H, Hofmockel KS, Humphries HC, Iribarne O, Jin VL, Kay A, Kirkman KP, Klein JA, Knops JM, La Pierre KJ, Ladwig LM, Lambrinos JG, Leakey AD, Li Q, Li W, McCulley R, Melbourne B, Mitchell CE, Moore JL, Morgan J, Mortensen B, O'Halloran LR, Pärtel M, Pascual J, Pyke DA, Risch AC, Salguero-Gómez R, Sankaran M, Schuetz M, Simonsen A, Smith M, Stevens C, Sullivan L, Wardle GM, Wolkovich EM, Wragg PD, Wright J, and Yang L
- Subjects
- Biodiversity, Ecosystem, Introduced Species, Plant Dispersal, Poaceae physiology
- Abstract
Invasions have increased the size of regional species pools, but are typically assumed to reduce native diversity. However, global-scale tests of this assumption have been elusive because of the focus on exotic species richness, rather than relative abundance. This is problematic because low invader richness can indicate invasion resistance by the native community or, alternatively, dominance by a single exotic species. Here, we used a globally replicated study to quantify relationships between exotic richness and abundance in grass-dominated ecosystems in 13 countries on six continents, ranging from salt marshes to alpine tundra. We tested effects of human land use, native community diversity, herbivore pressure, and nutrient limitation on exotic plant dominance. Despite its widespread use, exotic richness was a poor proxy for exotic dominance at low exotic richness, because sites that contained few exotic species ranged from relatively pristine (low exotic richness and cover) to almost completely exotic-dominated ones (low exotic richness but high exotic cover). Both exotic cover and richness were predicted by native plant diversity (native grass richness) and land use (distance to cultivation). Although climate was important for predicting both exotic cover and richness, climatic factors predicting cover (precipitation variability) differed from those predicting richness (maximum temperature and mean temperature in the wettest quarter). Herbivory and nutrient limitation did not predict exotic richness or cover. Exotic dominance was greatest in areas with low native grass richness at the site- or regional-scale. Although this could reflect native grass displacement, a lack of biotic resistance is a more likely explanation, given that grasses comprise the most aggressive invaders. These findings underscore the need to move beyond richness as a surrogate for the extent of invasion, because this metric confounds monodominance with invasion resistance. Monitoring species' relative abundance will more rapidly advance our understanding of invasions., (© 2013 John Wiley & Sons Ltd.)
- Published
- 2013
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36. Self-reinforcing impacts of plant invasions change over time.
- Author
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Yelenik SG and D'Antonio CM
- Subjects
- Biomass, Feedback, Physiological, Fires, Hawaii, Nitrogen metabolism, Nitrogen Fixation, Poaceae growth & development, Poaceae metabolism, Seedlings growth & development, Soil chemistry, Species Specificity, Time Factors, Volcanic Eruptions, Ecosystem, Introduced Species, Poaceae physiology
- Abstract
Returning native species to habitats degraded by biological invasions is a critical conservation goal. A leading hypothesis poses that exotic plant dominance is self-reinforced by impacts on ecosystem processes, leading to persistent stable states. Invaders have been documented to modify fire regimes, alter soil nutrients or shift microbial communities in ways that feed back to benefit themselves over competitors. However, few studies have followed invasions through time to ask whether ecosystem impacts and feedbacks persist. Here we return to woodland sites in Hawai'i Volcanoes National Park that were invaded by exotic C4 grasses in the 1960s, the ecosystem impacts of which were studied intensively in the 1990s. We show that positive feedbacks between exotic grasses and soil nitrogen cycling have broken down, but rather than facilitating native vegetation, the weakening feedbacks facilitate new exotic species. Data from the 1990s showed that exotic grasses increased nitrogen-mineralization rates by two- to fourfold, but were nitrogen-limited. Thus, the impacts of the invader created a positive feedback early in the invasion. We now show that annual net soil nitrogen mineralization has since dropped to pre-invasion levels. In addition, a seedling outplanting experiment that varied soil nitrogen and grass competition demonstrates that the changing impacts of grasses do not favour native species re-establishment. Instead, decreased nitrogen availability most benefits another aggressive invader, the nitrogen-fixing tree Morella faya. Long-term studies of invasions may reveal that ecosystem impacts and feedbacks shift over time, but that this may not benefit native species recovery.
- Published
- 2013
- Full Text
- View/download PDF
37. Non-Additive effects on decomposition from mixing litter of the invasive Mikania micrantha H.B.K. with native plants.
- Author
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Chen BM, Peng SL, D'Antonio CM, Li DJ, and Ren WT
- Subjects
- China, Ficus chemistry, Ficus metabolism, Introduced Species, Mikania chemistry, Nitrogen Compounds chemistry, Plant Components, Aerial chemistry, Plant Weeds chemistry, Mikania metabolism, Nitrogen Compounds metabolism, Plant Components, Aerial metabolism, Plant Weeds metabolism
- Abstract
A common hypothesis to explain the effect of litter mixing is based on the difference in litter N content between mixed species. Although many studies have shown that litter of invasive non-native plants typically has higher N content than that of native plants in the communities they invade, there has been surprisingly little study of mixing effects during plant invasions. We address this question in south China where Mikania micrantha H.B.K., a non-native vine, with high litter N content, has invaded many forested ecosystems. We were specifically interested in whether this invader accelerated decomposition and how the strength of the litter mixing effect changes with the degree of invasion and over time during litter decomposition. Using litterbags, we evaluated the effect of mixing litter of M. micrantha with the litter of 7 native resident plants, at 3 ratios: M1 (1∶4, = exotic:native litter), M2 (1∶1) and M3 (4∶1, = exotic:native litter) over three incubation periods. We compared mixed litter with unmixed litter of the native species to identify if a non-additive effect of mixing litter existed. We found that there were positive significant non-additive effects of litter mixing on both mass loss and nutrient release. These effects changed with native species identity, mixture ratio and decay times. Overall the greatest accelerations of mixture decay and N release tended to be in the highest degree of invasion (mix ratio M3) and during the middle and final measured stages of decomposition. Contrary to expectations, the initial difference in litter N did not explain species differences in the effect of mixing but overall it appears that invasion by M. micrantha is accelerating the decomposition of native species litter. This effect on a fundamental ecosystem process could contribute to higher rates of nutrient turnover in invaded ecosystems.
- Published
- 2013
- Full Text
- View/download PDF
38. Bounded ranges of variation as a framework for future conservation and fire management.
- Author
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Moritz MA, Hurteau MD, Suding KN, and D'Antonio CM
- Abstract
Alterations in natural fire patterns have negatively affected fire-prone ecosystems in many ways. The historical range of variability (HRV) concept evolved as a management target for natural vegetation composition and fire regimes in fire-prone ecosystems. HRV-based management inherently assumes that ecosystem resilience is reflected in observed ranges of past vegetation and fire dynamics, typically without knowledge of where thresholds exist beyond these dynamics. Given uncertainty in future conditions, some have argued that HRV may not adequately reflect ecosystem resilience to future fire activity. We suggest a refinement that includes concepts from the thresholds of potential concern (TPC) framework, which emphasizes tipping points at the extremes of ecosystem dynamics and other socially unacceptable outcomes. We propose bounded ranges of variation (BRV), an approach focused on building resilience by using historical information, but also by identifying socio-ecological thresholds to avoid and associated management action triggers. Here, we examine nonnative species and carbon sequestration as examples of how the BRV framework could be used in the context of conservation and fire management., (© 2013 New York Academy of Sciences.)
- Published
- 2013
- Full Text
- View/download PDF
39. Poised to prosper? A cross-system comparison of climate change effects on native and non-native species performance.
- Author
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Sorte CJ, Ibáñez I, Blumenthal DM, Molinari NA, Miller LP, Grosholz ED, Diez JM, D'Antonio CM, Olden JD, Jones SJ, and Dukes JS
- Subjects
- Carbon Dioxide, Climate Change, Temperature, Ecosystem, Introduced Species, Plant Physiological Phenomena
- Abstract
Climate change and biological invasions are primary threats to global biodiversity that may interact in the future. To date, the hypothesis that climate change will favour non-native species has been examined exclusively through local comparisons of single or few species. Here, we take a meta-analytical approach to broadly evaluate whether non-native species are poised to respond more positively than native species to future climatic conditions. We compiled a database of studies in aquatic and terrestrial ecosystems that reported performance measures of non-native (157 species) and co-occurring native species (204 species) under different temperature, CO(2) and precipitation conditions. Our analyses revealed that in terrestrial (primarily plant) systems, native and non-native species responded similarly to environmental changes. By contrast, in aquatic (primarily animal) systems, increases in temperature and CO(2) largely inhibited native species. There was a general trend towards stronger responses among non-native species, including enhanced positive responses to more favourable conditions and stronger negative responses to less favourable conditions. As climate change proceeds, aquatic systems may be particularly vulnerable to invasion. Across systems, there could be a higher risk of invasion at sites becoming more climatically hospitable, whereas sites shifting towards harsher conditions may become more resistant to invasions., (© 2012 Blackwell Publishing Ltd/CNRS.)
- Published
- 2013
- Full Text
- View/download PDF
40. Introduced annual grass increases regional fire activity across the arid western USA (1980-2009).
- Author
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Balch JK, Bradley BA, D'Antonio CM, and Gómez-Dans J
- Subjects
- United States, Fires, Poaceae
- Abstract
Non-native, invasive grasses have been linked to altered grass-fire cycles worldwide. Although a few studies have quantified resulting changes in fire activity at local scales, and many have speculated about larger scales, regional alterations to fire regimes remain poorly documented. We assessed the influence of large-scale Bromus tectorum (hereafter cheatgrass) invasion on fire size, duration, spread rate, and interannual variability in comparison to other prominent land cover classes across the Great Basin, USA. We compared regional land cover maps to burned area measured using the Moderate Resolution Imaging Spectroradiometer (MODIS) for 2000-2009 and to fire extents recorded by the USGS registry of fires from 1980 to 2009. Cheatgrass dominates at least 6% of the central Great Basin (650 000 km(2) ). MODIS records show that 13% of these cheatgrass-dominated lands burned, resulting in a fire return interval of 78 years for any given location within cheatgrass. This proportion was more than double the amount burned across all other vegetation types (range: 0.5-6% burned). During the 1990s, this difference was even more extreme, with cheatgrass burning nearly four times more frequently than any native vegetation type (16% of cheatgrass burned compared to 1-5% of native vegetation). Cheatgrass was also disproportionately represented in the largest fires, comprising 24% of the land area of the 50 largest fires recorded by MODIS during the 2000s. Furthermore, multi-date fires that burned across multiple vegetation types were significantly more likely to have started in cheatgrass. Finally, cheatgrass fires showed a strong interannual response to wet years, a trend only weakly observed in native vegetation types. These results demonstrate that cheatgrass invasion has substantially altered the regional fire regime. Although this result has been suspected by managers for decades, this study is the first to document recent cheatgrass-driven fire regimes at a regional scale., (© 2012 Blackwell Publishing Ltd.)
- Published
- 2013
- Full Text
- View/download PDF
41. Sinks for nitrogen inputs in terrestrial ecosystems: a meta-analysis of 15N tracer field studies.
- Author
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Templer PH, Mack MC, Chapin FS 3rd, Christenson LM, Compton JE, Crook HD, Currie WS, Curtis CJ, Dail DB, D'Antonio CM, Emmett BA, Epstein HE, Goodale CL, Gundersen P, Hobbie SE, Holland K, Hooper DU, Hungate BA, Lamontagne S, Nadelhoffer KJ, Osenberg CW, Perakis SS, Schleppi P, Schimel J, Schmidt IK, Sommerkorn M, Spoelstra J, Tietema A, Wessel WW, and Zak DR
- Subjects
- Altitude, Ammonia chemistry, Chemical Hazard Release, Nitrates chemistry, Nitrogen Isotopes, Rain, Temperature, Ecosystem, Nitrogen chemistry, Nitrogen Cycle
- Abstract
Effects of anthropogenic nitrogen (N) deposition and the ability of terrestrial ecosystems to store carbon (C) depend in part on the amount of N retained in the system and its partitioning among plant and soil pools. We conducted a meta-analysis of studies at 48 sites across four continents that used enriched 15N isotope tracers in order to synthesize information about total ecosystem N retention (i.e., total ecosystem 15N recovery in plant and soil pools) across natural systems and N partitioning among ecosystem pools. The greatest recoveries of ecosystem 15N tracer occurred in shrublands (mean, 89.5%) and wetlands (84.8%) followed by forests (74.9%) and grasslands (51.8%). In the short term (< 1 week after 15N tracer application), total ecosystem 15N recovery was negatively correlated with fine-root and soil 15N natural abundance, and organic soil C and N concentration but was positively correlated with mean annual temperature and mineral soil C:N. In the longer term (3-18 months after 15N tracer application), total ecosystem 15N retention was negatively correlated with foliar natural-abundance 15N but was positively correlated with mineral soil C and N concentration and C:N, showing that plant and soil natural-abundance 15N and soil C:N are good indicators of total ecosystem N retention. Foliar N concentration was not significantly related to ecosystem 15N tracer recovery, suggesting that plant N status is not a good predictor of total ecosystem N retention. Because the largest ecosystem sinks for 15N tracer were below ground in forests, shrublands, and grasslands, we conclude that growth enhancement and potential for increased C storage in aboveground biomass from atmospheric N deposition is likely to be modest in these ecosystems. Total ecosystem 15N recovery decreased with N fertilization, with an apparent threshold fertilization rate of 46 kg N x ha(-1) x yr(-1) above which most ecosystems showed net losses of applied 15N tracer in response to N fertilizer addition.
- Published
- 2012
- Full Text
- View/download PDF
42. A functional trait perspective on plant invasion.
- Author
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Drenovsky RE, Grewell BJ, D'Antonio CM, Funk JL, James JJ, Molinari N, Parker IM, and Richards CL
- Subjects
- Introduced Species, Plants
- Abstract
Background and Aims: Global environmental change will affect non-native plant invasions, with profound potential impacts on native plant populations, communities and ecosystems. In this context, we review plant functional traits, particularly those that drive invader abundance (invasiveness) and impacts, as well as the integration of these traits across multiple ecological scales, and as a basis for restoration and management., Scope: We review the concepts and terminology surrounding functional traits and how functional traits influence processes at the individual level. We explore how phenotypic plasticity may lead to rapid evolution of novel traits facilitating invasiveness in changing environments and then 'scale up' to evaluate the relative importance of demographic traits and their links to invasion rates. We then suggest a functional trait framework for assessing per capita effects and, ultimately, impacts of invasive plants on plant communities and ecosystems. Lastly, we focus on the role of functional trait-based approaches in invasive species management and restoration in the context of rapid, global environmental change., Conclusions: To understand how the abundance and impacts of invasive plants will respond to rapid environmental changes it is essential to link trait-based responses of invaders to changes in community and ecosystem properties. To do so requires a comprehensive effort that considers dynamic environmental controls and a targeted approach to understand key functional traits driving both invader abundance and impacts. If we are to predict future invasions, manage those at hand and use restoration technology to mitigate invasive species impacts, future research must focus on functional traits that promote invasiveness and invader impacts under changing conditions, and integrate major factors driving invasions from individual to ecosystem levels.
- Published
- 2012
- Full Text
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43. The human dimension of fire regimes on Earth.
- Author
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Bowman DM, Balch J, Artaxo P, Bond WJ, Cochrane MA, D'Antonio CM, Defries R, Johnston FH, Keeley JE, Krawchuk MA, Kull CA, Mack M, Moritz MA, Pyne S, Roos CI, Scott AC, Sodhi NS, Swetnam TW, and Whittaker R
- Abstract
Humans and their ancestors are unique in being a fire-making species, but 'natural' (i.e. independent of humans) fires have an ancient, geological history on Earth. Natural fires have influenced biological evolution and global biogeochemical cycles, making fire integral to the functioning of some biomes. Globally, debate rages about the impact on ecosystems of prehistoric human-set fires, with views ranging from catastrophic to negligible. Understanding of the diversity of human fire regimes on Earth in the past, present and future remains rudimentary. It remains uncertain how humans have caused a departure from 'natural' background levels that vary with climate change. Available evidence shows that modern humans can increase or decrease background levels of natural fire activity by clearing forests, promoting grazing, dispersing plants, altering ignition patterns and actively suppressing fires, thereby causing substantial ecosystem changes and loss of biodiversity. Some of these contemporary fire regimes cause substantial economic disruptions owing to the destruction of infrastructure, degradation of ecosystem services, loss of life, and smoke-related health effects. These episodic disasters help frame negative public attitudes towards landscape fires, despite the need for burning to sustain some ecosystems. Greenhouse gas-induced warming and changes in the hydrological cycle may increase the occurrence of large, severe fires, with potentially significant feedbacks to the Earth system. Improved understanding of human fire regimes demands: (1) better data on past and current human influences on fire regimes to enable global comparative analyses, (2) a greater understanding of different cultural traditions of landscape burning and their positive and negative social, economic and ecological effects, and (3) more realistic representations of anthropogenic fire in global vegetation and climate change models. We provide an historical framework to promote understanding of the development and diversification of fire regimes, covering the pre-human period, human domestication of fire, and the subsequent transition from subsistence agriculture to industrial economies. All of these phases still occur on Earth, providing opportunities for comparative research.
- Published
- 2011
- Full Text
- View/download PDF
44. Long-term impacts of invasive grasses and subsequent fire in seasonally dry Hawaiian woodlands.
- Author
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D'Antonio CM, Hughes RF, and Tunison JT
- Subjects
- Environmental Monitoring, Hawaii, Time Factors, Water, Ecosystem, Fires, Introduced Species, Poaceae physiology, Seasons, Trees
- Abstract
Invasive nonnative grasses have altered the composition of seasonally dry shrublands and woodlands throughout the world. In many areas they coexist with native woody species until fire occurs, after which they become dominant. Yet it is not clear how long their impacts persist in the absence of further fire. We evaluated the long-term impacts of grass invasions and subsequent fire in seasonally dry submontane habitats on Hawai'i, USA. We recensused transects in invaded unburned woodland and woodland that had burned in exotic grass-fueled fires in 1970 and 1987 and had last been censused in 1991. In the unburned woodlands, we found that the dominant understory grass invader, Schizachyrium condensatum, had declined by 40%, while native understory species were abundant and largely unchanged from measurements 17 years ago. In burned woodland, exotic grass cover also declined, but overall values remained high and recruitment of native species was poor. Sites that had converted to exotic grassland after a 1970 fire remained dominated by exotic grasses with no increase in native cover despite 37 years without fire. Grass-dominated sites that had burned twice also showed limited recovery despite 20 years of fire suppression. We found limited evidence for "invasional meltdown": Exotic richness remained low across burned sites, and the dominant species in 1991, Melinis minutiflora, is still dominant today. Twice-burned sites are, however, being invaded by the nitrogen-fixing tree Morella faya, an introduced species with the potential to greatly alter the successional trajectory on young volcanic soils. In summary, despite decades of fire suppression, native species show little recovery in burned Hawaiian woodlands. Thus, burned sites appear to be beyond a threshold for "natural recovery" (e.g., passive restoration).
- Published
- 2011
- Full Text
- View/download PDF
45. Abundance of introduced species at home predicts abundance away in herbaceous communities.
- Author
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Firn J, Moore JL, MacDougall AS, Borer ET, Seabloom EW, HilleRisLambers J, Harpole WS, Cleland EE, Brown CS, Knops JM, Prober SM, Pyke DA, Farrell KA, Bakker JD, O'Halloran LR, Adler PB, Collins SL, D'Antonio CM, Crawley MJ, Wolkovich EM, La Pierre KJ, Melbourne BA, Hautier Y, Morgan JW, Leakey AD, Kay A, McCulley R, Davies KF, Stevens CJ, Chu CJ, Holl KD, Klein JA, Fay PA, Hagenah N, Kirkman KP, and Buckley YM
- Subjects
- Biota, Poaceae, Introduced Species, Magnoliopsida, Population Density
- Abstract
Many ecosystems worldwide are dominated by introduced plant species, leading to loss of biodiversity and ecosystem function. A common but rarely tested assumption is that these plants are more abundant in introduced vs. native communities, because ecological or evolutionary-based shifts in populations underlie invasion success. Here, data for 26 herbaceous species at 39 sites, within eight countries, revealed that species abundances were similar at native (home) and introduced (away) sites - grass species were generally abundant home and away, while forbs were low in abundance, but more abundant at home. Sites with six or more of these species had similar community abundance hierarchies, suggesting that suites of introduced species are assembling similarly on different continents. Overall, we found that substantial changes to populations are not necessarily a pre-condition for invasion success and that increases in species abundance are unusual. Instead, abundance at home predicts abundance away, a potentially useful additional criterion for biosecurity programmes., (© 2011 Blackwell Publishing Ltd/CNRS.)
- Published
- 2011
- Full Text
- View/download PDF
46. Early impacts of biological control on canopy cover and water use of the invasive saltcedar tree (Tamarix spp.) in western Nevada, USA.
- Author
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Pattison RR, D'Antonio CM, Dudley TL, Allander KK, and Rice B
- Subjects
- Animals, Ecosystem, Feeding Behavior, Nevada, Plant Stems metabolism, Plant Transpiration, Population Density, Population Dynamics, Tamaricaceae growth & development, Coleoptera physiology, Introduced Species, Pest Control, Biological, Tamaricaceae metabolism, Water metabolism
- Abstract
The success of biological control programs is rarely assessed beyond population level impacts on the target organism. The question of whether a biological control agent can either partially or completely restore ecosystem services independent of population level control is therefore still open to discussion. Using observational and experimental approaches, we investigated the ability of the saltcedar leaf beetle [Diorhabda carinulata (Brullé) (Coleoptera: Chrysomelidae)] to reduce the water use of saltcedar trees (Tamarix ramosissima Ledeb.) in two sites (Humboldt and Walker Rivers) in Nevada, USA. At these sites D. carinulata defoliated the majority of trees within 25 and 9 km, respectively, of the release location within 3 years. At the Humboldt site, D. carinulata reduced the canopy cover of trees adjacent to the release location by >90%. At a location 4 km away during the first year of defoliation, D. carinulata reduced peak (August) stem water use by 50-70% and stand transpiration (July to late September) by 75% (P = 0.052). There was, however, no reduction in stem water use and stand transpiration during the second year of defoliation due to reduced beetle abundances at that location. At the Walker site, we measured stand evapotranspiration (ET) in the center of a large saltcedar stand and found that ET was highest immediately prior to D. carinulata arrival, dropped dramatically with defoliation, and remained low through the subsequent 2 years of the study. In contrast, near the perimeter of the stand, D. carinulata did not reduce sap flow, partly because of low rates of defoliation but also because of increased water use per unit leaf area in response to defoliation. Taken together, our results provide evidence that in the early stages of population expansion D. carinulata can lead to substantial declines in saltcedar water use. The extent of these declines varies spatially and temporally and is dependent on saltcedar compensatory responses along with D. carinulata population dynamics and patterns of dispersal.
- Published
- 2011
- Full Text
- View/download PDF
47. Explaining disparities in colorectal cancer screening among five Asian ethnic groups: a population-based study in California.
- Author
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Maxwell AE, Crespi CM, Antonio CM, and Lu P
- Subjects
- Aged, Asia, Southeastern ethnology, California epidemiology, Colorectal Neoplasms epidemiology, Asia, Eastern ethnology, Female, Health Services Accessibility, Healthcare Disparities, Humans, Logistic Models, Male, Mass Screening methods, Mass Screening statistics & numerical data, Middle Aged, Multivariate Analysis, Colorectal Neoplasms diagnosis, Colorectal Neoplasms ethnology
- Abstract
Background: Data from the California Health Interview Survey (CHIS) indicate that levels and temporal trends in colorectal cancer (CRC) screening prevalence vary among Asian American groups; however, the reasons for these differences have not been fully investigated., Methods: Using CHIS 2001, 2003 and 2005 data, we conducted hierarchical regression analyses progressively controlling for demographic characteristics, English proficiency and access to care in an attempt to identify factors explaining differences in screening prevalence and trends among Chinese, Filipino, Vietnamese, Korean and Japanese Americans (N = 4,188)., Results: After controlling for differences in gender and age, all Asian subgroups had significantly lower odds of having ever received screening in 2001 than the reference group of Japanese Americans. In addition, Korean Americans were the only subgroup that had a statistically significant decline in screening prevalence from 2001 to 2005 compared to the trend among Japanese Americans. After controlling for differences in education, marital status, employment status and federal poverty level, Korean Americans were the only group that had significantly lower screening prevalence than Japanese Americans in 2001, and their trend to 2005 remained significantly depressed. After controlling for differences in English proficiency and access to care, screening prevalences in 2001 were no longer significantly different among the Asian subgroups, but the trend among Korean Americans from 2001 to 2005 remained significantly depressed. Korean and Vietnamese Americans were less likely than other groups to report a recent doctor recommendation for screening and more likely to cite a lack of health problems as a reason for not obtaining screening., Conclusions: Differences in CRC screening trends among Asian ethnic groups are not entirely explained by differences in demographic characteristics, English proficiency and access to care. A better understanding of mutable factors such as rates of doctor recommendation and health beliefs will be crucial for designing culturally appropriate interventions to promote CRC screening.
- Published
- 2010
- Full Text
- View/download PDF
48. Enhanced bactericidal activity of enterocin AS-48 in combination with essential oils, natural bioactive compounds and chemical preservatives against Listeria monocytogenes in ready-to-eat salad.
- Author
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Antonio CM, Abriouel H, López RL, Omar NB, Valdivia E, and Gálvez A
- Subjects
- Colony Count, Microbial, Drug Synergism, Food Microbiology, Food Preservation, Listeria monocytogenes growth & development, Microbial Sensitivity Tests, Anti-Bacterial Agents pharmacology, Bacteriocins pharmacology, Food Handling methods, Food Preservatives pharmacology, Listeria monocytogenes drug effects, Plant Oils pharmacology, Vegetables microbiology
- Abstract
Enterocin AS-48 (30-60 microg/g) significantly reduced viable counts of Listeria monocytogenes in Russian-type salad during one week storage at 10 degrees C. Antilisterial activity of AS-48 (30 microg/g) in salad was strongly enhanced by essential oils (thyme verbena, thyme red, Spanish oregano, ajowan, tea tree, clove, and sage oils tested at 1%, as well as with 2% rosemary oil). Antilisterial activity also increased in combination with bioactive components from essential oils and plant extracts, with other related antimicrobials of natural origin or derived from chemical synthesis (carvacrol, eugenol, thymol, terpineol, tyrosol, hydroxytyrosol, caffeic, ferulic and vanillic acid, luteolin, geranyl butyrate, geranyl phenylacetate, pyrocatechol, hydrocinnamic acid, tert butylhydroquinone, phenylphosphate, isopropyl methyl phenol, coumaric acid, and 2-nitropropanol), and with food preservatives (citric and lactic acid, sucrose palmitate, sucrose stearate, p-hydroxybenzoic methylester acid -- PHBME, and Nisaplin). AS-48 acted synergistically with citric, lactic acid, and PHBME. A mixed population of two L. monocytogenes strains was markedly reduced for one week in salads treated with AS-48 (30 microg/g) in combination with lactic acid, PHBME or Nisaplin. The increased bactericidal activity of these combinations is interesting to improve protection against L. monocytogenes during salad storage.
- Published
- 2009
- Full Text
- View/download PDF
49. Fire in the Earth system.
- Author
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Bowman DM, Balch JK, Artaxo P, Bond WJ, Carlson JM, Cochrane MA, D'Antonio CM, Defries RS, Doyle JC, Harrison SP, Johnston FH, Keeley JE, Krawchuk MA, Kull CA, Marston JB, Moritz MA, Prentice IC, Roos CI, Scott AC, Swetnam TW, van der Werf GR, and Pyne SJ
- Subjects
- Animals, Biological Evolution, Carbon, Climate, Earth, Planet, Humans, Plants, Ecosystem, Fires
- Abstract
Fire is a worldwide phenomenon that appears in the geological record soon after the appearance of terrestrial plants. Fire influences global ecosystem patterns and processes, including vegetation distribution and structure, the carbon cycle, and climate. Although humans and fire have always coexisted, our capacity to manage fire remains imperfect and may become more difficult in the future as climate change alters fire regimes. This risk is difficult to assess, however, because fires are still poorly represented in global models. Here, we discuss some of the most important issues involved in developing a better understanding of the role of fire in the Earth system.
- Published
- 2009
- Full Text
- View/download PDF
50. Spatial and temporal patterns of seed dispersal: an important determinant of grassland invasion.
- Author
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DiVittorio CT, Corbin JD, and D'Antonio CM
- Subjects
- California, Demography, Species Specificity, Time Factors, Ecosystem, Poaceae physiology, Seeds physiology
- Abstract
We measured spatial and temporal patterns of seed dispersal and seedling recruitment for 58 species in a grassland community to test whether seed dispersal could predict patterns of invasion after disturbance. For the 12 most abundant grasses, recruitment of native species was dependent on the propagule supply of both native and exotic species. Variability in seed rain on small spatial (1-10 m) and temporal (within season) scales led to qualitative differences in the outcome of disturbance colonization such that native species dominated disturbances when exotic seed supply was low but failed to establish when exotic seed supply was high. Local dispersal and spatial heterogeneity in species composition promoted coexistence of native and exotic species by creating refuges from high exotic seed supply within native dominated patches. Despite this, copious exotic seed production strongly limited recruitment of native species in exotic dominated patches. Most grasslands in California are presently dominated by exotic species, suggesting that competition at the seedling stage is a major barrier to native species restoration.
- Published
- 2007
- Full Text
- View/download PDF
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