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216 results on '"Chacoff, Natacha P."'

7. A global synthesis reveals biodiversity-mediated benefits for crop production.

Author

Dainese, Matteo, Martin, Emily A, Aizen, Marcelo A, Albrecht, Matthias, Bartomeus, Ignasi, Bommarco, Riccardo, Carvalheiro, Luisa G, Chaplin-Kramer, Rebecca, Gagic, Vesna, Garibaldi, Lucas A, Ghazoul, Jaboury, Grab, Heather, Jonsson, Mattias, Karp, Daniel S, Kennedy, Christina M, Kleijn, David, Kremen, Claire, Landis, Douglas A, Letourneau, Deborah K, Marini, Lorenzo, Poveda, Katja, Rader, Romina, Smith, Henrik G, Tscharntke, Teja, Andersson, Georg KS, Badenhausser, Isabelle, Baensch, Svenja, Bezerra, Antonio Diego M, Bianchi, Felix JJA, Boreux, Virginie, Bretagnolle, Vincent, Caballero-Lopez, Berta, Cavigliasso, Pablo, Ćetković, Aleksandar, Chacoff, Natacha P, Classen, Alice, Cusser, Sarah, da Silva E Silva, Felipe D, de Groot, G Arjen, Dudenhöffer, Jan H, Ekroos, Johan, Fijen, Thijs, Franck, Pierre, Freitas, Breno M, Garratt, Michael PD, Gratton, Claudio, Hipólito, Juliana, Holzschuh, Andrea, Hunt, Lauren, Iverson, Aaron L, Jha, Shalene, Keasar, Tamar, Kim, Tania N, Kishinevsky, Miriam, Klatt, Björn K, Klein, Alexandra-Maria, Krewenka, Kristin M, Krishnan, Smitha, Larsen, Ashley E, Lavigne, Claire, Liere, Heidi, Maas, Bea, Mallinger, Rachel E, Martinez Pachon, Eliana, Martínez-Salinas, Alejandra, Meehan, Timothy D, Mitchell, Matthew GE, Molina, Gonzalo AR, Nesper, Maike, Nilsson, Lovisa, O'Rourke, Megan E, Peters, Marcell K, Plećaš, Milan, Potts, Simon G, Ramos, Davi de L, Rosenheim, Jay A, Rundlöf, Maj, Rusch, Adrien, Sáez, Agustín, Scheper, Jeroen, Schleuning, Matthias, Schmack, Julia M, Sciligo, Amber R, Seymour, Colleen, Stanley, Dara A, Stewart, Rebecca, Stout, Jane C, Sutter, Louis, Takada, Mayura B, Taki, Hisatomo, Tamburini, Giovanni, Tschumi, Matthias, Viana, Blandina F, Westphal, Catrin, Willcox, Bryony K, Wratten, Stephen D, Yoshioka, Akira, Zaragoza-Trello, Carlos, Zhang, Wei, and Zou, Yi

Subjects
Humans, Crops, Agricultural, Ecosystem, Biodiversity, Pest Control, Biological, Agriculture, Pollination, Crop Production, Crops, Agricultural, Pest Control, Biological
Abstract

Human land use threatens global biodiversity and compromises multiple ecosystem functions critical to food production. Whether crop yield-related ecosystem services can be maintained by a few dominant species or rely on high richness remains unclear. Using a global database from 89 studies (with 1475 locations), we partition the relative importance of species richness, abundance, and dominance for pollination; biological pest control; and final yields in the context of ongoing land-use change. Pollinator and enemy richness directly supported ecosystem services in addition to and independent of abundance and dominance. Up to 50% of the negative effects of landscape simplification on ecosystem services was due to richness losses of service-providing organisms, with negative consequences for crop yields. Maintaining the biodiversity of ecosystem service providers is therefore vital to sustain the flow of key agroecosystem benefits to society.

Published
2019

11. Effect of green spaces and floral composition on the community of flower visitors in a piedmont city in Argentina.

Author

ANDRADA, FRANCO D., CHACOFF, NATACHA P., and LOMÁSCOLO, SILVA B.

Subjects
*BIOTIC communities, *PLANT species diversity, *CITIES & towns, *COMPOSITION of flowers, *URBAN planning
Abstract

In cities, human activities transform the native composition of plant communities into a mixture of native and exotic species. This new plant community shapes the composition of floral visitor communities persisting in urban environments. Recognizing the value of the diversity of urban pollinator communities can help quantify the conservation significance of cities. The aims of this work are: 1) to understand the effect of urbanization on flower visitors by comparing pollinator communities in natural and urban landscapes; 2) to quantify the influence of floral resources on floral visitors, and 3) to assess the impact of green spaces in urban environments on the composition of the flower-visitor community. We explored plant communities and floral visitors in five urban green spaces in a low urbanized city in Tucumán, Argentina, and in five natural protected areas located adjacent to the city. We found a greater diversity of flowering plants in the urban environment; mainly represented by exotic plant species and a lower diversity of the pollinator community than in the natural landscape. Pollinator diversity also showed a positive association with plant richness, while it was negatively affected by the proportion of exotic plants and the increase in flower density. Within city, distance to green spaces negatively affects the diversity of pollinators. Our results show that floral visitor communities in urban environments are less diverse than those in natural sites. Therefore, the composition of the plant community in the city, mainly exotic seems to affect communities of urban floral visitors. Our findings suggest that cities without intensive urbanization, and that still share many species with the closest natural space, may focus on urban planning that considers development alternatives that contribute to the conservation of pollinators. [ABSTRACT FROM AUTHOR]

Published
2024
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15. Landscape structure and farming management interacts to modulate pollination supply and crop production in blueberries

Author

Ramírez‐Mejía, Andrés F., Blendinger, Pedro G., Woodcock, Ben A., Schmucki, Reto, Escobar, Lorena, Morton, Richard Daniel, Vieli, Lorena, Nunes‐Silva, Patrícia, Lomáscolo, Silvia B., Morales, Carolina Laura, Murúa, Maureen, Agostini, Kayna, Chacoff, Natacha P., Ramírez‐Mejía, Andrés F., Blendinger, Pedro G., Woodcock, Ben A., Schmucki, Reto, Escobar, Lorena, Morton, Richard Daniel, Vieli, Lorena, Nunes‐Silva, Patrícia, Lomáscolo, Silvia B., Morales, Carolina Laura, Murúa, Maureen, Agostini, Kayna, and Chacoff, Natacha P.

Abstract

1. Pollination services are affected by landscape context, farming management and pollinator community structure, all of which impact flower visitation rates, pollen deposition and final production. We studied these processes in Argentina for highbush blueberry crops, which depend on pollinators to produce marketable yields. 2. We studied how land cover and honeybee stocking influence the abundance of wild and managed pollinators in blueberry crops, using structural equation modelling to disentangle the cascading effects through which pollinators contribute to blueberry fruit number, size, nutritional content and overall yield. 3. All pollinator functional groups responded to landscape changes at a spatial scale under 1000 m, and the significance or direction of the effects were modulated by the field-level deployment of honeybee hives. 4. Fruit diameter increased with pollen deposited, but decreased with honeybee abundance, which, had indirect effects on fruit acidity. Honeybees had a positive effect on the number of fruit produced by the plants and also benefited the overall yield (kg plant−1) through independent effects on both the quality and quantity components of fruit production. 5. Synthesis and applications. Deployment of beehives in blueberry fields can buffer, but not compensate for the negative effects on honeybee abundance produced by surrounding large scale none-flowering crops. Such compensation would require high-quality beehives by monitoring their health and strength. The contribution of honeybees to crop production is not equal across production metrics. That is, higher abundance of honeybees increases the number of berries produced but at the cost of smaller and more acidic fruits, potentially reducing their market value. Growers must consider this trade-off between fruit quantity and quality when actively managing honeybee abundance.

Published
2024

16. A global quantitative synthesis of local and landscape effects on wild bee pollinators in agroecosystems.

Author

Kennedy, Christina M, Lonsdorf, Eric, Neel, Maile C, Williams, Neal M, Ricketts, Taylor H, Winfree, Rachael, Bommarco, Riccardo, Brittain, Claire, Burley, Alana L, Cariveau, Daniel, Carvalheiro, Luísa G, Chacoff, Natacha P, Cunningham, Saul A, Danforth, Bryan N, Dudenhöffer, Jan-Hendrik, Elle, Elizabeth, Gaines, Hannah R, Garibaldi, Lucas A, Gratton, Claudio, Holzschuh, Andrea, Isaacs, Rufus, Javorek, Steven K, Jha, Shalene, Klein, Alexandra M, Krewenka, Kristin, Mandelik, Yael, Mayfield, Margaret M, Morandin, Lora, Neame, Lisa A, Otieno, Mark, Park, Mia, Potts, Simon G, Rundlöf, Maj, Saez, Agustin, Steffan-Dewenter, Ingolf, Taki, Hisatomo, Viana, Blandina Felipe, Westphal, Catrin, Wilson, Julianna K, Greenleaf, Sarah S, and Kremen, Claire

Subjects
Animals, Bees, Flowers, Crops, Agricultural, Ecosystem, Climate, Population Density, Models, Theoretical, Agriculture, Pollination, Agri-environment schemes, diversified farming system, ecologically scaled landscape index, ecosystem services, farm management, habitat fragmentation, landscape structure, organic farming, pollinators, Ecology, Ecological Applications, Evolutionary Biology
Abstract

Bees provide essential pollination services that are potentially affected both by local farm management and the surrounding landscape. To better understand these different factors, we modelled the relative effects of landscape composition (nesting and floral resources within foraging distances), landscape configuration (patch shape, interpatch connectivity and habitat aggregation) and farm management (organic vs. conventional and local-scale field diversity), and their interactions, on wild bee abundance and richness for 39 crop systems globally. Bee abundance and richness were higher in diversified and organic fields and in landscapes comprising more high-quality habitats; bee richness on conventional fields with low diversity benefited most from high-quality surrounding land cover. Landscape configuration effects were weak. Bee responses varied slightly by biome. Our synthesis reveals that pollinator persistence will depend on both the maintenance of high-quality habitats around farms and on local management practices that may offset impacts of intensive monoculture agriculture.

Published
2013

17. Wild Pollinators Enhance Fruit Set of Crops Regardless of Honey Bee Abundance

Author

Garibaldi, Lucas A, Steffan-Dewenter, Ingolf, Winfree, Rachael, Aizen, Marcelo A, Bommarco, Riccardo, Cunningham, Saul A, Kremen, Claire, Carvalheiro, Luísa G, Harder, Lawrence D, Afik, Ohad, Bartomeus, Ignasi, Benjamin, Faye, Boreux, Virginie, Cariveau, Daniel, Chacoff, Natacha P, Dudenhöffer, Jan H, Freitas, Breno M, Ghazoul, Jaboury, Greenleaf, Sarah, Hipólito, Juliana, Holzschuh, Andrea, Howlett, Brad, Isaacs, Rufus, Javorek, Steven K, Kennedy, Christina M, Krewenka, Kristin M, Krishnan, Smitha, Mandelik, Yael, Mayfield, Margaret M, Motzke, Iris, Munyuli, Theodore, Nault, Brian A, Otieno, Mark, Petersen, Jessica, Pisanty, Gideon, Potts, Simon G, Rader, Romina, Ricketts, Taylor H, Rundlöf, Seymour, Colleen L, Schüepp, Christof, Szentgyörgyi, Hajnalka, Taki, Hisatomo, Tscharntke, Teja, Vergara, Carlos H, Viana, Blandina F, Wanger, Thomas C, Westphal, Catrin, Williams, Neal, and Klein, Alexandra M

Subjects
Agricultural, Veterinary and Food Sciences, Zoology, Crop and Pasture Production, Biological Sciences, Animals, Bees, Crops, Agricultural, Flowers, Fruit, Insecta, Pollination, General Science & Technology
Abstract

The diversity and abundance of wild insect pollinators have declined in many agricultural landscapes. Whether such declines reduce crop yields, or are mitigated by managed pollinators such as honey bees, is unclear. We found universally positive associations of fruit set with flower visitation by wild insects in 41 crop systems worldwide. In contrast, fruit set increased significantly with flower visitation by honey bees in only 14% of the systems surveyed. Overall, wild insects pollinated crops more effectively; an increase in wild insect visitation enhanced fruit set by twice as much as an equivalent increase in honey bee visitation. Visitation by wild insects and honey bees promoted fruit set independently, so pollination by managed honey bees supplemented, rather than substituted for, pollination by wild insects. Our results suggest that new practices for integrated management of both honey bees and diverse wild insect assemblages will enhance global crop yields.

Published
2013

23. Landscape structure and farming management interacts to modulate pollination supply and crop production in blueberries

Author

Ramírez‐Mejía, Andrés F., primary, Blendinger, Pedro G., additional, Woodcock, Ben A., additional, Schmucki, Reto, additional, Escobar, Lorena, additional, Morton, Richard Daniel, additional, Vieli, Lorena, additional, Nunes‐Silva, Patrícia, additional, Lomáscolo, Silvia B., additional, Morales, Carolina Laura, additional, Murúa, Maureen, additional, Agostini, Kayna, additional, and Chacoff, Natacha P., additional

Published
2023
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24. Invasive bees and their impact on agriculture

Author

Aizen, Marcelo A., primary, Arbetman, Marina P., additional, Chacoff, Natacha P., additional, Chalcoff, Vanina R., additional, Feinsinger, Peter, additional, Garibaldi, Lucas A., additional, Harder, Lawrence D., additional, Morales, Carolina L., additional, Sáez, Agustín, additional, and Vanbergen, Adam J., additional

Published
2020
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28. Arándanos: polinización y producción en Sudamérica

Author

Nunes-Silva, Patrícia, Ramírez-Mejía, Andrés F., Blochtein, Betina, Ramos, Jenifer Dias, Agostini, Kayna, Vieli, Lorena, Santanna, Manoela, Raguse-Quadros, Mateus, Ibarra, Maureen Murúa, Chacoff, Natacha P., Cavigliasso, Pablo, Blendinger, Pedro G., and Domingos, Sara Stefani

Subjects
abejas, agricultura, arándanos, polinización
Abstract

Este libro pretende aportar información sobre la polinización y la importancia de los polinizadores para los arándanos en Sudamérica, principalmente en Argentina, Brasil y Chile.

Published
2023
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29. Mirtilo: polinização e produção na América do Sul

Author

Nunes-Silva, Patrícia, Ramírez-Mejía, Andrés F., Blochtein, Betina, Ramos, Jenifer Dias, Agostini, Kayna, Vieli, Lorena, Santanna, Manoela, Raguse-Quadros, Mateus, Ibarra, Maureen Murúa, Chacoff, Natacha P., Cavigliasso, Pablo, Blendinger, Pedro. G., and Domingos, Sara Stefani

Subjects
abelhas, agricultura, mirtilo, polinização
Abstract

Este livro visa fornecer informações sobre a polinização e a importância dos polinizadores para o mirtileiro na América do Sul, principalmente na Argentina, no Brasil e no Chile.

Published
2023
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30. Blueberry: pollination and production in South America

Author

Nunes-Silva, Patrícia, Ramírez-Mejía, Andrés F., Blochtein, Betina, Ramos, Jenifer Dias, Agostini, Kayna, Vieli, Lorena, Santanna, Manoela, Raguse-Quadros, Mateus, Ibarra, Maureen Murúa, Chacoff, Natacha P., Cavigliasso, Pablo, Blendinger, Pedro G., and Domingos, Sara Stefani

Subjects
pollination, bees, blueberry, agriculture
Abstract

This book aims to provide information on pollination and the importance of pollinators for blueberries in South America, mainly in Argentina, Brazil and Chile.

Published
2023
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31. Non-bee insects are important contributors to global crop pollination

Author

Rader, Romina, Bartomeus, Ignasi, Garibaldi, Lucas A., Garratt, Michael P. D., Howlett, Brad G., Winfree, Rachael, Cunningham, Saul A., Mayfield, Margaret M., Arthur, Anthony D., Andersson, Georg K. S., Bommarco, Riccardo, Brittain, Claire, Carvalheiro, Luísa G., Chacoff, Natacha P., Entling, Martin H., Foully, Benjamin, Freitas, Breno M., Gemmill-Herren, Barbara, Ghazoul, Jaboury, Griffin, Sean R., Gross, Caroline L., Herbertsson, Lina, Herzog, Felix, Hipólito, Juliana, Jaggar, Sue, Jauker, Frank, Klein, Alexandra-Maria, Kleijn, David, Krishnan, Smitha, Lemos, Camila Q., Lindström, Sandra A. M., Mandelik, Yael, Monteiro, Victor M., Nelson, Warrick, Nilsson, Lovisa, Pattemore, David E., de O. Pereira, Natália, Pisanty, Gideon, Potts, Simon G., Reemer, Menno, Rundlöf, Maj, Sheffield, Cory S., Scheper, Jeroen, Schüepp, Christof, Smith, Henrik G., Stanley, Dara A., Stout, Jane C., Szentgyörgyi, Hajnalka, Taki, Hisatomo, Vergara, Carlos H., Viana, Blandina F., and Woyciechowski, Michal

Published
2016

32. Trait matching of flower visitors and crops predicts fruit set better than trait diversity

Author

Garibaldi, Lucas A., Bartomeus, Ignasi, Bommarco, Riccardo, Klein, Alexandra M., Cunningham, Saul A., Aizen, Marcelo A., Boreux, Virginie, Garratt, Michael P. D., Carvalheiro, Luísa G., Kremen, Claire, Morales, Carolina L., Schüepp, Christof, Chacoff, Natacha P., Freitas, Breno M., Gagic, Vesna, Holzschuh, Andrea, Klatt, Björn K., Krewenka, Kristin M., Krishnan, Smitha, Mayfield, Margaret M., Motzke, Iris, Otieno, Mark, Petersen, Jessica, Potts, Simon G., Ricketts, Taylor H., Rundlöf, Maj, Sciligo, Amber, Sinu, Palatty Allesh, Steffan-Dewenter, Ingolf, Taki, Hisatomo, Tscharntke, Teja, Vergara, Carlos H., Viana, Blandina F., and Woyciechowski, Michal

Published
2015

40. CropPol: A dynamic, open and global database on crop pollination

Author

Belmont Forum, European Commission, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Netherlands Organization for Scientific Research, National Science Foundation (US), Allen, Alfonso, Magrach, Ainhoa, Dainese, Matteo, Garibaldi, Lucas A., Kleijn, David, Rader, Romina, Reilly, James R., Winfree, Rachael, Lundin, Ola, McGrady, Carley M., Brittain, Claire, Halinski, Rosana, Henry, Steve, Simmons, Benno I., Dalsgaard, Bo, Campbell, Joshua W., Hansen, Katrine, Mason, Keith, Ward, Kimiora L., Michener, Charles D., Gundersen, Knute B., Pisman, Matti, Bobiwash, Kyle, Gut, Larry, Rowe, Logan M., Boyle, Natalie K., Williams, Neal M., Joshi, Neelendra K., Rothwell, Nikki, Gillespie, Robert L., Isaacs, Rufus, Daily, Gretchen C., Lichtenberg, Elinor M., Fleischer, Shelby J., Peterson, Stephen S., Rao, Sujaya, Pitts-Singer, Theresa L., Fijen, Thijs, Boreux, Virginie, Rundlöf, Maj, Felipe Viana, Blandina, Klein, Alexandra‐Maria, Smith, Henrik G., Schüepp, Christoff, Ehrlich, Paul R., Bommarco, Riccardo, Carvalheiro, Luísa G., Ricketts, Taylor H., Ghazoul, Jaboury, Krishnan, Smitha, Benjamin, Faye E., Loureiro, João, Castro, Sílvia, Raine, Nigel E., Herzog, Felix, Arjen de Groot, Gerard, Burns, Katherine L. W., Horgan, Finbarr G., Hipólito, Juliana, Smagghe, Guy, Meeus, Ivan, Eeraerts, Maxime, Potts, Simon G., Kremen, Claire, Gómez García, Daniel, Entling, Martin H., Miñarro, Marcos, Crowder, David W., Vilà, Montserrat, Pisanty, Gideon, Mandelik, Yael, Vereecken, Nicolas J., Leclercq, Nicolas, Weekers, Timothy, Lindstrom, Sandra A.M., Stanley, Dara A., Dupont, Yoko L., Zaragoza-Trello, C., Nicholson, Charlie C., Scheper, Jeroen, Robson, Andrew, Rad, Carlos, Marks, Evan A. N., Mota, Lucie, Danforth, Bryan, Park, Mia, Bezerra, Antônio Diego M., Jauker, Frank, Freitas, Breno M., Mallinger, Rachel E., Silva, Fabiana Oliveira da, Willcox, Bryony, Howlett, Brad, Ramos, Davi L., Silva, Felipe D. da Silva e, Lázaro, Amparo, Alomar, David, González-Estévez, Miguel A., Schwarzbach, Franciska, Taki, Hisatomo, Cariveau, Daniel P., Garratt, Michael P. D., Nabaes Jodar, Diego Nicolás, Stewart, Rebecca I. A, Blechschmidt, Leah, Ariza, Daniel, Biddinger, David J., Nesper, Maike, Sritongchuay, Tuanjit, Diekötter, Tim, Wolters, Volkmar, Castro, Helena, Gaspar, Hugo, Nault, Brian A., Badenhausser, Isabelle, Petersen, Jessica D., Tscharntke, Teja, Bretagnolle, Vincent, Artz, Derek R., O'Reilly, Alison D., Willis Chan, D. Susan, Chacoff, Natacha P., Andersson, Georg K. S., Jha, Shalene, Colville, Jonathan F., Veldtman, Ruan, Coutinho, Jeferson, Bianchi, Felix J. J. A., Sutter, Louis, Albrecht, Matthias, Chamorro, Fermín José, Elle, Elizabeth, Jeanneret, Philippe, Zou, Yi, Averill, Anne, Sáez, Agustín, Sciligo, Amber R., Vergara, Carlos H., Bloom, Elias H., Oeller, Elisabeth, Badano, Ernesto I., Nates, Guiomar, Loeb, Gregory M., Hoffman, George, Grab, Heather, Ekroos, Johan, Gagic, Vesna, Cunningham, Saul A., Åström, Jens, Cavigliasso, Pablo, Trillo, Alejandro, Classen, Alice, Pigozo, Camila Magalhães, Mauchline, Alice L., Montero-Castaño, Ana, Ellis, James D., Wilby, Andrew, Woodcock, Ben A., Sidhu, C. Sheena, Steffan-Dewenter, Ingolf, Vogiatzakis, Ioannis N., Herrera, José M., Otieno, Mark, Bartomeus, Ignasi, Gikungu, Mary W., Cusser, Sarah J., Nauss, Thomas, Daniels, Jared, Nilsson, Lovisa, Knapp, Jessica, Ortega-Marcos, Jorge J., González, José A., Osborne, Juliet L., Blanche, Rosalind, Brokaw, Julia, Shaw, Rosalind F., Hevia, Violeta, Stout, Jane, Arthur, Anthony D., Gibbs, Jason, Blochtein, Betina, Szentgyorgyi, Hajnalka, Jin, Li, Mayfield, Margaret M., Woyciechowski, Michał, Wilson, Julianna K., Nunes-Silva, Patrícia, Belmont Forum, European Commission, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Netherlands Organization for Scientific Research, National Science Foundation (US), Allen, Alfonso, Magrach, Ainhoa, Dainese, Matteo, Garibaldi, Lucas A., Kleijn, David, Rader, Romina, Reilly, James R., Winfree, Rachael, Lundin, Ola, McGrady, Carley M., Brittain, Claire, Halinski, Rosana, Henry, Steve, Simmons, Benno I., Dalsgaard, Bo, Campbell, Joshua W., Hansen, Katrine, Mason, Keith, Ward, Kimiora L., Michener, Charles D., Gundersen, Knute B., Pisman, Matti, Bobiwash, Kyle, Gut, Larry, Rowe, Logan M., Boyle, Natalie K., Williams, Neal M., Joshi, Neelendra K., Rothwell, Nikki, Gillespie, Robert L., Isaacs, Rufus, Daily, Gretchen C., Lichtenberg, Elinor M., Fleischer, Shelby J., Peterson, Stephen S., Rao, Sujaya, Pitts-Singer, Theresa L., Fijen, Thijs, Boreux, Virginie, Rundlöf, Maj, Felipe Viana, Blandina, Klein, Alexandra‐Maria, Smith, Henrik G., Schüepp, Christoff, Ehrlich, Paul R., Bommarco, Riccardo, Carvalheiro, Luísa G., Ricketts, Taylor H., Ghazoul, Jaboury, Krishnan, Smitha, Benjamin, Faye E., Loureiro, João, Castro, Sílvia, Raine, Nigel E., Herzog, Felix, Arjen de Groot, Gerard, Burns, Katherine L. W., Horgan, Finbarr G., Hipólito, Juliana, Smagghe, Guy, Meeus, Ivan, Eeraerts, Maxime, Potts, Simon G., Kremen, Claire, Gómez García, Daniel, Entling, Martin H., Miñarro, Marcos, Crowder, David W., Vilà, Montserrat, Pisanty, Gideon, Mandelik, Yael, Vereecken, Nicolas J., Leclercq, Nicolas, Weekers, Timothy, Lindstrom, Sandra A.M., Stanley, Dara A., Dupont, Yoko L., Zaragoza-Trello, C., Nicholson, Charlie C., Scheper, Jeroen, Robson, Andrew, Rad, Carlos, Marks, Evan A. N., Mota, Lucie, Danforth, Bryan, Park, Mia, Bezerra, Antônio Diego M., Jauker, Frank, Freitas, Breno M., Mallinger, Rachel E., Silva, Fabiana Oliveira da, Willcox, Bryony, Howlett, Brad, Ramos, Davi L., Silva, Felipe D. da Silva e, Lázaro, Amparo, Alomar, David, González-Estévez, Miguel A., Schwarzbach, Franciska, Taki, Hisatomo, Cariveau, Daniel P., Garratt, Michael P. D., Nabaes Jodar, Diego Nicolás, Stewart, Rebecca I. A, Blechschmidt, Leah, Ariza, Daniel, Biddinger, David J., Nesper, Maike, Sritongchuay, Tuanjit, Diekötter, Tim, Wolters, Volkmar, Castro, Helena, Gaspar, Hugo, Nault, Brian A., Badenhausser, Isabelle, Petersen, Jessica D., Tscharntke, Teja, Bretagnolle, Vincent, Artz, Derek R., O'Reilly, Alison D., Willis Chan, D. Susan, Chacoff, Natacha P., Andersson, Georg K. S., Jha, Shalene, Colville, Jonathan F., Veldtman, Ruan, Coutinho, Jeferson, Bianchi, Felix J. J. A., Sutter, Louis, Albrecht, Matthias, Chamorro, Fermín José, Elle, Elizabeth, Jeanneret, Philippe, Zou, Yi, Averill, Anne, Sáez, Agustín, Sciligo, Amber R., Vergara, Carlos H., Bloom, Elias H., Oeller, Elisabeth, Badano, Ernesto I., Nates, Guiomar, Loeb, Gregory M., Hoffman, George, Grab, Heather, Ekroos, Johan, Gagic, Vesna, Cunningham, Saul A., Åström, Jens, Cavigliasso, Pablo, Trillo, Alejandro, Classen, Alice, Pigozo, Camila Magalhães, Mauchline, Alice L., Montero-Castaño, Ana, Ellis, James D., Wilby, Andrew, Woodcock, Ben A., Sidhu, C. Sheena, Steffan-Dewenter, Ingolf, Vogiatzakis, Ioannis N., Herrera, José M., Otieno, Mark, Bartomeus, Ignasi, Gikungu, Mary W., Cusser, Sarah J., Nauss, Thomas, Daniels, Jared, Nilsson, Lovisa, Knapp, Jessica, Ortega-Marcos, Jorge J., González, José A., Osborne, Juliet L., Blanche, Rosalind, Brokaw, Julia, Shaw, Rosalind F., Hevia, Violeta, Stout, Jane, Arthur, Anthony D., Gibbs, Jason, Blochtein, Betina, Szentgyorgyi, Hajnalka, Jin, Li, Mayfield, Margaret M., Woyciechowski, Michał, Wilson, Julianna K., and Nunes-Silva, Patrícia

Abstract

Seventy five percent of the world's food crops benefit from insect pollination. Hence, there has been increased interest in how global change drivers impact this critical ecosystem service. Because standardized data on crop pollination are rarely available, we are limited in our capacity to understand the variation in pollination benefits to crop yield, as well as to anticipate changes in this service, develop predictions, and inform management actions. Here, we present CropPol, a dynamic, open, and global database on crop pollination. It contains measurements recorded from 202 crop studies, covering 3,394 field observations, 2,552 yield measurements (i.e., berry mass, number of fruits, and fruit density [kg/ha], among others), and 47,752 insect records from 48 commercial crops distributed around the globe. CropPol comprises 32 of the 87 leading global crops and commodities that are pollinator dependent. Malus domestica is the most represented crop (32 studies), followed by Brassica napus (22 studies), Vaccinium corymbosum (13 studies), and Citrullus lanatus (12 studies). The most abundant pollinator guilds recorded are honey bees (34.22% counts), bumblebees (19.19%), flies other than Syrphidae and Bombyliidae (13.18%), other wild bees (13.13%), beetles (10.97%), Syrphidae (4.87%), and Bombyliidae (0.05%). Locations comprise 34 countries distributed among Europe (76 studies), North America (60), Latin America and the Caribbean (29), Asia (20), Oceania (10), and Africa (7). Sampling spans three decades and is concentrated on 2001¿2005 (21 studies), 2006¿2010 (40), 2011¿2015 (88), and 2016¿2020 (50). This is the most comprehensive open global data set on measurements of crop flower visitors, crop pollinators and pollination to date, and we encourage researchers to add more datasets to this database in the future.

Published
2022

44. Pollination requirements of pigmented grapefruit (Citrus paradisi Macf.) from northwestern Argentina

Author

Chacoff, Natacha P. and Aizen, Marcelo A.

Subjects
Grapefruit -- Research, Pollination -- Research, Agricultural industry, Business
Abstract

The consequence of a proposed pollinator decline for agriculture is a subject of much ongoing debate. However, pollination requirements of many cultivated plants remain unknown. Citrus is complex in terms of pollination needs because of great variation in breeding systems among and within species, and even among and within cultivars. The objective of this study was to evaluate pollinator dependence of three cultivars of grapefruit (Citrus paradisi Macf.) planted in northwestern Argentina. Bagged flowering branches were assigned to different pollination treatments: emasculation, spontaneous self-pollination, hand self-pollination, and hand cross-pollination, and the results compared with those from open-pollinated flowers. We counted the number of pollen grains and pollen tubes in the style, fruit set, and seed production. We also assessed differences in germination rates of self- vs. cross-pollen grains. We found that hand- and open-pollinated flowers set about six times more fruit than emasculated and bagged (insect excluded) flowers. In addition, cross-pollen performed better in terms of grain germination and tube growth than selfpollen. Although being fully self-compatible, apomixis and wind pollination are not important factors for grapefruit reproductive success. Thus, insect pollinators represent a critical and potential limiting resource for seedless grapefruits from northwestern Argentina.

Published
2007

47. Temporal scale‐dependence of plant–pollinator networks

Author

Schwarz, Benjamin, primary, Vázquez, Diego P., additional, CaraDonna, Paul J., additional, Knight, Tiffany M., additional, Benadi, Gita, additional, Dormann, Carsten F., additional, Gauzens, Benoit, additional, Motivans, Elena, additional, Resasco, Julian, additional, Blüthgen, Nico, additional, Burkle, Laura A., additional, Fang, Qiang, additional, Kaiser‐Bunbury, Christopher N., additional, Alarcón, Ruben, additional, Bain, Justin A., additional, Chacoff, Natacha P., additional, Huang, Shuang‐Quan, additional, LeBuhn, Gretchen, additional, MacLeod, Molly, additional, Petanidou, Theodora, additional, Rasmussen, Claus, additional, Simanonok, Michael P., additional, Thompson, Amibeth H., additional, and Fründ, Jochen, additional

Published
2020
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49. Pérdida de semillas en fase de pre-dispersión en dos especies de Prosopis (Fabacea: Mimosoidea) del Desierto del Monte, Argentina

Author

Velez, Silvina, Chacoff, Natacha P, and Campos, Claudia M

Subjects
Insects, Aborción, Depredación, Abortion, Predation, Insectos
Abstract

Pre-dispersal filters imposed on the seed stage can alter the likelihood of seed dispersal. We evaluate pre-dispersal seed loss due to predation by insects and abortion in Prosopis flexuosa and P. chilensis. This study was conducted in two protected areas in the Monte Desert. We collected P. flexuosa and P. chilensis fruits from different trees, from two plots and two years. Samples were maintained for 50 days in translucent PVC bottles stored in a laboratory under stable temperature (25 °C) and natural photoperiod, awaiting the emergence of insects. Then we opened the fruits and individually examined all seeds to determine their condition. We found that total pre-dispersal seed loss was 32% in P. flexuosa and 21% in P. chilensis. Seed predation by insects was the major source of pre-dispersal seed loss (19% in P. flexuosa and 14% in P. chilensis). The main seed predator was the apionid weevil (Brentidae: Apioninae) in P. flexuosa, and bruchid beetles (Chrysomelidae: Bruchinae) in P. chilensis. Some bruchid beetles prey upon seeds, completing their life cycle, whereas others remain inside seeds (41% in P. flexuosa and 49% in P. chilensis, of total seed damaged by bruchid beetles). Seed abortion was another important source of seed loss, especially for P. flexuosa, but its cause still remains unknown. We show and discuss the extent of a proposed methodology to account for pre-dispersal seed predation that includes the immature stages of non-emergent bruchid. Pre-dispersal seed loss by insects and abortion represent an ecological filter that limits the amount of seeds available for dispersal and establishment of these species. Understanding seed loss process may contribute to know and predict Prosopis population dynamics, revealing the natural regeneration mechanisms to forest recovery. Los filtros impuestos sobre las semillas en la fase pre-dispersiva pueden alterar su probabilidad de ser dispersadas. Evaluamos la pérdida de semillas debido a la depredación por insectos y aborción durante la etapa predispersiva en dos especies: Prosopis flexuosa y P. chilensis. El estudio se realizó en dos áreas protegidas del Desierto del Monte. Colectamos frutos de ambas especies de Prosopis a partir de individuos adultos de dos parcelas y en dos años. Las muestras se colocaron en frascos de PVC transparentes almacenados en laboratorio a una temperatura estable (25 °C) y fotoperíodo natural durante 50 días, para determinar la emergencia de los insectos. Luego se abrieron los frutos y se examinó cada semilla para registrar su condición. La pérdida total de semillas fue del 32% en P. flexuosa y del 21% en P. chilensis. La depredación de semillas por insectos fue la fuente principal de pérdida de semillas (19% en P. flexuosa y del 14% en P. chilensis). Los depredadores más importantes fueron Apion sp. (Brentidae: Apioninae) en P. flexuosa, y brúquidos de distintas especies (Chrysomelidae: Bruchinae) en P. chilensis. Algunos brúquidos depredan la semilla y emergen por un pequeño orificio al completar su ciclo, mientras que otros permanecen en el interior de la semilla (41% en P. flexuosa y del 49% en P. chilensis del total de semillas depredadas por brúquidos). La aborción fue la segunda fuente de pérdida predispersiva de semillas, en especial para P. flexuosa, aunque aún se desconocen sus causas. Mostramos y discutimos el alcance de una metodología para la estimación de depredación pre-dispersión, que considera la inclusión de los estadios inmaduros de brúquidos que no emergen de la semilla. La pérdida de semillas pre-dispersión por insectos y aborción, representan un filtro ecológico que podría limitar la cantidad de semillas disponibles para la dispersión y posterior establecimiento de estas especies. Comprender el proceso de pérdida de semillas puede contribuir a conocer y predecir la dinámica poblacional de Prosopis, revelando los mecanismos naturales de regeneración para la recuperación de los bosques.

Published
2018

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