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4. Cross-continental importance of CH4 emissions from dry inland-waters

Author

Paranaíba, José R., Aben, Ralf, Barros, Nathan, Quadra, Gabrielle, Linkhorst, Annika, Amado, André M., Brothers, Soren, Catalán, Núria, Condon, Jason, Finlayson, Colin M., Grossart, Hans-Peter, Howitt, Julia, Oliveira Junior, Ernandes S., Keller, Philipp S., Koschorreck, Matthias, Laas, Alo, Leigh, Catherine, Marcé, Rafael, Mendonça, Raquel, Muniz, Claumir C., Obrador, Biel, Onandia, Gabriela, Raymundo, Diego, Reverey, Florian, Roland, Fábio, Rõõm, Eva-Ingrid, Sobek, Sebastian, von Schiller, Daniel, Wang, Haijun, and Kosten, Sarian

Published
2022
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8. A conceptual framework for understanding the biogeochemistry of dry riverbeds through the lens of soil science

Author

Arce, María Isabel, Mendoza-Lera, Clara, Almagro, María, Catalán, Núria, Romaní, Anna M., Martí, Eugènia, Gómez, Rosa, Bernal, Susana, Foulquier, Arnaud, Mutz, Michael, Marcé, Rafael, Zoppini, Annamaria, Gionchetta, Giulia, Weigelhofer, Gabriele, del Campo, Rubén, Robinson, Christopher T., Gilmer, Alan, Rulik, Martin, Obrador, Biel, Shumilova, Oleksandra, Zlatanović, Sanja, Arnon, Shai, Baldrian, Petr, Singer, Gabriel, Datry, Thibault, Skoulikidis, Nikos, Tietjen, Britta, and von Schiller, Daniel

Published
2019
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11. Delving deeper : Metabolic processes in the metalimnion of stratified lakes

Author

Giling, Darren P., Staehr, Peter A., Grossart, Hans Peter, Andersen, Mikkel René, Boehrer, Bertram, Escot, Carmelo, Evrendilek, Fatih, Gómez-Gener, Lluís, Honti, Mark, Jones, Ian D., Karakaya, Nusret, Laas, Alo, Moreno-Ostos, Enrique, Rinke, Karsten, Scharfenberger, Ulrike, Schmidt, Silke R., Weber, Michael, Woolway, R. Iestyn, Zwart, Jacob A., and Obrador, Biel

Published
2017

13. Near-bed stratification controls bottom hypoxia in ice-covered alpine lakes

Author

Perga, Marie-Elodie, Minaudo, Camille, Doda, Tomy, Arthaud, Florent, Beria, Harsh, Chmiel, Hannah E., Escoffier, Nicolas, Lambert, Thibault, Napolleoni, Raphaelle, Obrador, Biel, Perolo, Pascal, Ruegg, Janine, Ulloa, Hugo, and Bouffard, Damien

Subjects
depletion, sediment, water, morphology, dissolved-oxygen, temperature, dynamics, shallow, climate, phenology
Abstract

In ice-covered lakes, near-bottom oxygen concentration decreases for most of the wintertime, sometimes down to the point that bottom waters become hypoxic. Studies insofar have reached divergent conclusions on whether climate change limits or reinforces the extent and duration of hypoxia under ice, raising the need for a comprehensive understanding of the drivers of the dissolved oxygen (DO) dynamics under lake ice. Using high-temporal resolution time series of DO concentration and temperature across 14 mountain lakes, we showed that the duration of bottom hypoxia under ice varies from 0 to 236 d within lakes and among years. The variability of hypoxia duration was primarily explained by changes in the decay rate of DO above the lake bottom rather than by differences in DO concentration at the ice onset or in the ice-cover duration. We observed that the DO decay rate was primarily linked to physical controls (i.e., deep-water warming) rather than biogeochemical drivers (i.e., proxies for lake or catchment productivity). Using a simple numerical model, we provided a proof-of-concept that the near-bed stratification can be the mechanism tying the DO decay rate to the sediment heat release under the ice. We ultimately showed that the DO decay rate and hypoxia duration are driven by the summer light climate, with faster oxygen decline found under the ice of clearer cryostratified alpine lakes. We derived a framework theorizing how the hypoxia duration might change under the ice of alpine lakes in a warmer climate., Limnology and Oceanography, 68 (6), ISSN:0024-3590, ISSN:1939-5590

Published
2023

22. Controls on oxygen depletion under lake ice 

Author

Perga, Marie-Elodie, primary, Minaudo, Camille, additional, Ulloa, Hugo, additional, Doda, Tomy, additional, Perolo, Pascal, additional, Escoffier, Nicolas, additional, Arthaud, Florent, additional, Obrador, Biel, additional, and Bouffard, Damien, additional

Published
2022
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28. Stratification strength and light climate explain variation in chlorophyll a at the continental scale in a European multilake survey in a heatwave summer

Author

Donis, Daphne, primary, Mantzouki, Evanthia, additional, McGinnis, Daniel F., additional, Vachon, Dominic, additional, Gallego, Irene, additional, Grossart, Hans‐Peter, additional, de Senerpont Domis, Lisette N., additional, Teurlincx, Sven, additional, Seelen, Laura, additional, Lürling, Miquel, additional, Verstijnen, Yvon, additional, Maliaka, Valentini, additional, Fonvielle, Jeremy, additional, Visser, Petra M., additional, Verspagen, Jolanda, additional, van Herk, Maria, additional, Antoniou, Maria G., additional, Tsiarta, Nikoletta, additional, McCarthy, Valerie, additional, Perello, Victor C., additional, Machado‐Vieira, Danielle, additional, de Oliveira, Alinne Gurjão, additional, Maronić, Dubravka Špoljarić, additional, Stević, Filip, additional, Pfeiffer, Tanja Žuna, additional, Vucelić, Itana Bokan, additional, Žutinić, Petar, additional, Udovič, Marija Gligora, additional, Plenković‐Moraj, Anđelka, additional, Bláha, Luděk, additional, Geriš, Rodan, additional, Fránková, Markéta, additional, Christoffersen, Kirsten Seestern, additional, Warming, Trine Perlt, additional, Feldmann, Tõnu, additional, Laas, Alo, additional, Panksep, Kristel, additional, Tuvikene, Lea, additional, Kangro, Kersti, additional, Koreivienė, Judita, additional, Karosienė, Jūratė, additional, Kasperovičienė, Jūratė, additional, Savadova‐Ratkus, Ksenija, additional, Vitonytė, Irma, additional, Häggqvist, Kerstin, additional, Salmi, Pauliina, additional, Arvola, Lauri, additional, Rothhaupt, Karl, additional, Avagianos, Christos, additional, Kaloudis, Triantafyllos, additional, Gkelis, Spyros, additional, Panou, Manthos, additional, Triantis, Theodoros, additional, Zervou, Sevasti‐Kiriaki, additional, Hiskia, Anastasia, additional, Obertegger, Ulrike, additional, Boscaini, Adriano, additional, Flaim, Giovanna, additional, Salmaso, Nico, additional, Cerasino, Leonardo, additional, Haande, Sigrid, additional, Skjelbred, Birger, additional, Grabowska, Magdalena, additional, Karpowicz, Maciej, additional, Chmura, Damian, additional, Nawrocka, Lidia, additional, Kobos, Justyna, additional, Mazur‐Marzec, Hanna, additional, Alcaraz‐Párraga, Pablo, additional, Wilk‐Woźniak, Elżbieta, additional, Krztoń, Wojciech, additional, Walusiak, Edward, additional, Gagala‐Borowska, Ilona, additional, Mankiewicz‐Boczek, Joana, additional, Toporowska, Magdalena, additional, Pawlik‐Skowronska, Barbara, additional, Niedźwiecki, Michał, additional, Pęczuła, Wojciech, additional, Napiórkowska‐Krzebietke, Agnieszka, additional, Dunalska, Julita, additional, Sieńska, Justyna, additional, Szymański, Daniel, additional, Kruk, Marek, additional, Budzyńska, Agnieszka, additional, Goldyn, Ryszard, additional, Kozak, Anna, additional, Rosińska, Joanna, additional, Szeląg‐Wasielewska, Elżbieta, additional, Domek, Piotr, additional, Jakubowska‐Krepska, Natalia, additional, Kwasizur, Kinga, additional, Messyasz, Beata, additional, Pełechata, Aleksandra, additional, Pełechaty, Mariusz, additional, Kokocinski, Mikolaj, additional, Madrecka‐Witkowska, Beata, additional, Kostrzewska‐Szlakowska, Iwona, additional, Frąk, Magdalena, additional, Bańkowska‐Sobczak, Agnieszka, additional, Wasilewicz, Michał, additional, Ochocka, Agnieszka, additional, Pasztaleniec, Agnieszka, additional, Jasser, Iwona, additional, Antão‐Geraldes, Ana M., additional, Leira, Manel, additional, Vasconcelos, Vitor, additional, Morais, Joao, additional, Vale, Micaela, additional, Raposeiro, Pedro M., additional, Gonçalves, Vítor, additional, Aleksovski, Boris, additional, Krstić, Svetislav, additional, Nemova, Hana, additional, Drastichova, Iveta, additional, Chomova, Lucia, additional, Remec‐Rekar, Spela, additional, Elersek, Tina, additional, Hansson, Lars‐Anders, additional, Urrutia‐Cordero, Pablo, additional, Bravo, Andrea G., additional, Buck, Moritz, additional, Colom‐Montero, William, additional, Mustonen, Kristiina, additional, Pierson, Don, additional, Yang, Yang, additional, Richardson, Jessica, additional, Edwards, Christine, additional, Cromie, Hannah, additional, Delgado‐Martín, Jordi, additional, García, David, additional, Cereijo, Jose Luís, additional, Gomà, Joan, additional, Trapote, Mari Carmen, additional, Vegas‐Vilarrúbia, Teresa, additional, Obrador, Biel, additional, García‐Murcia, Ana, additional, Real, Monserrat, additional, Romans, Elvira, additional, Noguero‐Ribes, Jordi, additional, Duque, David Parreño, additional, Fernández‐Morán, Elísabeth, additional, Úbeda, Bárbara, additional, Gálvez, José Ángel, additional, Catalán, Núria, additional, Pérez‐Martínez, Carmen, additional, Ramos‐Rodríguez, Eloísa, additional, Cillero‐Castro, Carmen, additional, Moreno‐Ostos, Enrique, additional, Blanco, José María, additional, Rodríguez, Valeriano, additional, Montes‐Pérez, Jorge Juan, additional, Palomino, Roberto L., additional, Rodríguez‐Pérez, Estela, additional, Hernández, Armand, additional, Carballeira, Rafael, additional, Camacho, Antonio, additional, Picazo, Antonio, additional, Rochera, Carlos, additional, Santamans, Anna C., additional, Ferriol, Carmen, additional, Romo, Susana, additional, Soria, Juan Miguel, additional, Özen, Arda, additional, Karan, Tünay, additional, Demir, Nilsun, additional, Beklioğlu, Meryem, additional, Filiz, Nur, additional, Levi, Eti, additional, Iskin, Uğur, additional, Bezirci, Gizem, additional, Tavşanoğlu, Ülkü Nihan, additional, Çelik, Kemal, additional, Ozhan, Koray, additional, Karakaya, Nusret, additional, Koçer, Mehmet Ali Turan, additional, Yilmaz, Mete, additional, Maraşlıoğlu, Faruk, additional, Fakioglu, Özden, additional, Soylu, Elif Neyran, additional, Yağcı, Meral Apaydın, additional, Çınar, Şakir, additional, Çapkın, Kadir, additional, Yağcı, Abdulkadir, additional, Cesur, Mehmet, additional, Bilgin, Fuat, additional, Bulut, Cafer, additional, Uysal, Rahmi, additional, Latife, Köker, additional, Akçaalan, Reyhan, additional, Albay, Meriç, additional, Alp, Mehmet Tahir, additional, Özkan, Korhan, additional, Sevindik, Tuğba Ongun, additional, Tunca, Hatice, additional, Önem, Burçin, additional, Paerl, Hans, additional, Carey, Cayelan C., additional, and Ibelings, Bastiaan W., additional

Published
2021
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31. Temperature effects explain continental scale distribution of cyanobacterial toxins

Author

Mantzouki, Evanthia, Lürling, Miquel, Fastner, Jutta, Domis, Lisette de Senerpont, Wilk-Woźniak, Elżbieta, Koreiviene, Judita, Seelen, Laura, Teurlincx, Sven, Verstijnen, Yvon, Krztoń, Wojciech, Walusiak, Edward, Karosienė, Jūratė, Kasperovičienė, Jūratė, Savadova, Ksenija, Vitonytė, Irma, Cillero-Castro, Carmen, Budzyńska, Agnieszka, Goldyn, Ryszard, Kozak, Anna, Rosińska, Joanna, Szeląg-Wasielewska, Elżbieta, Domek, Piotr, Jakubowska-Krepska, Natalia, Kwasizur, Kinga, Messyasz, Beata, Pełechata, Aleksandra, Pełechaty, Mariusz, Kokocinski, Mikolaj, García-Murcia, Ana, Real, Monserrat, Romans, Elvira, Noguero-Ribes, Jordi, Duque, David Parreño, Fernández-Morán, Elísabeth, Karakaya, Nusret, Häggqvist, Kerstin, Beklioğlu, Meryem, Filiz, Nur, Levi, Eti E., Iskin, Uğur, Bezirci, Gizem, Tavşanoğlu, Ülkü Nihan, Özhan, Koray, Gkelis, Spyros, Panou, Manthos, Fakioglu, Özden, Avagianos, Christos, Kaloudis, Triantafyllos, Çelik, Kemal, Yilmaz, Mete, Marcé, Rafael, Catalán, Nuria, Bravo, Andrea G., Buck, Moritz, Colom-Montero, William, Mustonen, Kristiina, Pierson, Don, Yang, Yang, Raposeiro, Pedro M., Gonçalves, Vítor, Antoniou, Maria G., Tsiarta, Nikoletta, McCarthy, Valerie, Perello, Victor C., Feldmann, Tõnu, Laas, Alo, Panksep, Kristel, Tuvikene, Lea, Gagala, Ilona, Mankiewicz-Boczek, Joana, Yağcı, Meral Apaydın, Çınar, Şakir, Çapkın, Kadir, Yağcı, Abdulkadir, Cesur, Mehmet, Bilgin, Fuat, Bulut, Cafer, Uysal, Rahmi, Obertegger, Ulrike, Boscaini, Adriano, Flaim, Giovanna, Salmaso, Nico, Cerasino, Leonardo, Richardson, Jessica, Visser, Petra M., Verspagen, Jolanda M. H., Karan, Tünay, Soylu, Elif Neyran, Maraşlıoğlu, Faruk, Napiórkowska-Krzebietke, Agnieszka, Ochocka, Agnieszka, Pasztaleniec, Agnieszka, Antão-Geraldes, Ana M., Vasconcelos, Vitor, Morais, João, Vale, Micaela, Köker, Latife, Akçaalan, Reyhan, Albay, Meriç, Maronić, Dubravka Špoljarić, Stević, Filip, Pfeiffer, Tanja Žuna, Fonvielle, Jeremy, Straile, Dietmar, Rothhaupt, Karl-Otto, Hansson, Lars-Anders, Urrutia-Cordero, Pablo, Bláha, Luděk, Geriš, Rodan, Fránková, Markéta, Koçer, Mehmet Ali Turan, Alp, Mehmet Tahir, Remec-Rekar, Spela, Elersek, Tina, Triantis, Theodoros, Zervou, Sevasti-Kiriaki, Hiskia, Anastasia, Haande, Sigrid, Skjelbred, Birger, Madrecka, Beata, Nemova, Hana, Drastichova, Iveta, Chomova, Lucia, Edwards, Christine, Sevindik, Tuğba Ongun, Tunca, Hatice, Önem, Burçin, Aleksovski, Boris, Krstić, Svetislav, Vucelić, Itana Bokan, Nawrocka, Lidia, Salmi, Pauliina, Machado-Vieira, Danielle, Oliveira, Alinne Gurjão De, Delgado-Martín, Jordi, García, David, Cereijo, Jose Luís, Gomà, Joan, Trapote, Mari Carmen, Vegas-Vilarrúbia, Teresa, Obrador, Biel, Grabowska, Magdalena, Karpowicz, Maciej, Chmura, Damian, Úbeda, Bárbara, Gálvez, José Ángel, Özen, Arda, Christoffersen, Kirsten Seestern, Warming, Trine Perlt, Kobos, Justyna, Mazur-Marzec, Hanna, Pérez-Martínez, Carmen, Ramos-Rodríguez, Eloísa, Arvola, Lauri, Alcaraz-Párraga, Pablo, Toporowska, Magdalena, Pawlik-Skowronska, Barbara, Niedźwiecki, Michał, Pęczuła, Wojciech, Leira, Manel, Hernández, Armand, Moreno-Ostos, Enrique, Blanco, José María, Rodríguez, Valeriano, Montes-Pérez, Jorge Juan, Palomino, Roberto L., Rodríguez-Pérez, Estela, Carballeira, Rafael, Camacho, Antonio, Picazo, Antonio, Rochera, Carlos, Santamans, Anna C., Ferriol, Carmen, Romo, Susana, Soria, Juan Miguel, Dunalska, Julita, Sieńska, Justyna, Szymański, Daniel, Kruk, Marek, Kostrzewska-Szlakowska, Iwona, Jasser, Iwona, Žutinić, Petar, Udovič, Marija Gligora, Plenković-Moraj, Anđelka, Frąk, Magdalena, Bańkowska-Sobczak, Agnieszka, Wasilewicz, Michał, Özkan, Korhan, Maliaka, Valentini, Kangro, Kersti, Grossart, Hans-Peter, Paerl, Hans W., Carey, Cayelan C., and Ibelings, Bas W.

Subjects
ddc:610, 610 Medizin und Gesundheit, Institut für Biochemie und Biologie
Abstract

Insight into how environmental change determines the production and distribution of cyanobacterial toxins is necessary for risk assessment. Management guidelines currently focus on hepatotoxins (microcystins). Increasing attention is given to other classes, such as neurotoxins (e.g., anatoxin-a) and cytotoxins (e.g., cylindrospermopsin) due to their potency. Most studies examine the relationship between individual toxin variants and environmental factors, such as nutrients, temperature and light. In summer 2015, we collected samples across Europe to investigate the effect of nutrient and temperature gradients on the variability of toxin production at a continental scale. Direct and indirect effects of temperature were the main drivers of the spatial distribution in the toxins produced by the cyanobacterial community, the toxin concentrations and toxin quota. Generalized linear models showed that a Toxin Diversity Index (TDI) increased with latitude, while it decreased with water stability. Increases in TDI were explained through a significant increase in toxin variants such as MC-YR, anatoxin and cylindrospermopsin, accompanied by a decreasing presence of MC-LR. While global warming continues, the direct and indirect effects of increased lake temperatures will drive changes in the distribution of cyanobacterial toxins in Europe, potentially promoting selection of a few highly toxic species or strains., Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe; 1105

Published
2021
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32. Stratification strength and light climate explain variation in chlorophyll a at the continental scale in a European multilake survey in a heatwave summer

Author

Donis, Daphne, Mantzouki, Evanthia, McGinnis, Daniel F., Vachon, Dominic, Gallego, Irene, Grossart, Hans-Peter, de Senerpont Domis, Lisette N., Teurlincx, Sven, Seelen, Laura, Lürling, Miquel, Verstijnen, Yvon, Maliaka, Valentini, Fonvielle, Jeremy, Visser, Petra M., Verspagen, Jolanda, van Herk, Maria, Antoniou, Maria G., Tsiarta, Nikoletta, McCarthy, Valerie, Perello, Victor C., Machado-Vieira, Danielle, de Oliveira, Alinne Gurjão, Maronić, Dubravka Špoljarić, Stević, Filip, Pfeiffer, Tanja Žuna, Vucelić, Itana Bokan, Žutinić, Petar, Udovič, Marija Gligora, Plenković-Moraj, Anđelka, Bláha, Luděk, Geriš, Rodan, Fránková, Markéta, Christoffersen, Kirsten Seestern, Warming, Trine Perlt, Feldmann, Tõnu, Laas, Alo, Panksep, Kristel, Tuvikene, Lea, Kangro, Kersti, Koreivienė, Judita, Karosienė, Jūratė, Kasperovičienė, Jūratė, Savadova-Ratkus, Ksenija, Vitonytė, Irma, Häggqvist, Kerstin, Salmi, Pauliina, Arvola, Lauri, Rothhaupt, Karl, Avagianos, Christos, Kaloudis, Triantafyllos, Gkelis, Spyros, Panou, Manthos, Triantis, Theodoros, Zervou, Sevasti-Kiriaki, Hiskia, Anastasia, Obertegger, Ulrike, Boscaini, Adriano, Flaim, Giovanna, Salmaso, Nico, Cerasino, Leonardo, Haande, Sigrid, Skjelbred, Birger, Grabowska, Magdalena, Karpowicz, Maciej, Chmura, Damian, Nawrocka, Lidia, Kobos, Justyna, Mazur-Marzec, Hanna, Alcaraz-Párraga, Pablo, Wilk-Woźniak, Elżbieta, Krztoń, Wojciech, Walusiak, Edward, Gagala-Borowska, Ilona, Mankiewicz-Boczek, Joana, Toporowska, Magdalena, Pawlik-Skowronska, Barbara, Niedźwiecki, Michał, Pęczuła, Wojciech, Napiórkowska-Krzebietke, Agnieszka, Dunalska, Julita, Sieńska, Justyna, Szymański, Daniel, Kruk, Marek, Budzyńska, Agnieszka, Goldyn, Ryszard, Kozak, Anna, Rosińska, Joanna, Szeląg-Wasielewska, Elżbieta, Domek, Piotr, Jakubowska-Krepska, Natalia, Kwasizur, Kinga, Messyasz, Beata, Pełechata, Aleksandra, Pełechaty, Mariusz, Kokocinski, Mikolaj, Madrecka-Witkowska, Beata, Kostrzewska-Szlakowska, Iwona, Frąk, Magdalena, Bańkowska-Sobczak, Agnieszka, Wasilewicz, Michał, Ochocka, Agnieszka, Pasztaleniec, Agnieszka, Jasser, Iwona, Antão-Geraldes, Ana M., Leira, Manel, Vasconcelos, Vitor, Morais, Joao, Vale, Micaela, Raposeiro, Pedro M., Gonçalves, Vítor, Aleksovski, Boris, Krstić, Svetislav, Nemova, Hana, Drastichova, Iveta, Chomova, Lucia, Remec-Rekar, Spela, Elersek, Tina, Hansson, Lars-Anders, Urrutia-Cordero, Pablo, Bravo, Andrea G., Buck, Moritz, Colom-Montero, William, Mustonen, Kristiina, Pierson, Don, Yang, Yang, Richardson, Jessica, Edwards, Christine, Cromie, Hannah, Delgado-Martín, Jordi, García, David, Cereijo, Jose Luís, Gomà, Joan, Trapote, Mari Carmen, Vegas-Vilarrúbia, Teresa, Obrador, Biel, García-Murcia, Ana, Real, Monserrat, Romans, Elvira, Noguero-Ribes, Jordi, Duque, David Parreño, Fernández-Morán, Elísabeth, Úbeda, Bárbara, Gálvez, José Ángel, Catalán, Núria, Pérez-Martínez, Carmen, Ramos-Rodríguez, Eloísa, Cillero-Castro, Carmen, Moreno-Ostos, Enrique, Blanco, José María, Rodríguez, Valeriano, Montes-Pérez, Jorge Juan, Palomino, Roberto L., Rodríguez-Pérez, Estela, Hernández, Armand, Carballeira, Rafael, Camacho, Antonio, Picazo, Antonio, Rochera, Carlos, Santamans, Anna C., Ferriol, Carmen, Romo, Susana, Soria, Juan Miguel, Özen, Arda, Karan, Tünay, Demir, Nilsun, Beklioğlu, Meryem, Filiz, Nur, Levi, Eti, Iskin, Uğur, Bezirci, Gizem, Tavşanoğlu, Ülkü Nihan, Çelik, Kemal, Ozhan, Koray, Karakaya, Nusret, Koçer, Mehmet Ali Turan, Yilmaz, Mete, Maraşlıoğlu, Faruk, Fakioglu, Özden, Soylu, Elif Neyran, Yağcı, Meral Apaydın, Çınar, Şakir, Çapkın, Kadir, Yağcı, Abdulkadir, Cesur, Mehmet, Bilgin, Fuat, Bulut, Cafer, Uysal, Rahmi, Latife, Köker, Akçaalan, Reyhan, Albay, Meriç, Alp, Mehmet Tahir, Özkan, Korhan, Sevindik, Tuğba Ongun, Tunca, Hatice, Önem, Burçin, Paerl, Hans, Carey, Cayelan C., Ibelings, Bastiaan W., Donis, Daphne, Mantzouki, Evanthia, McGinnis, Daniel F., Vachon, Dominic, Gallego, Irene, Grossart, Hans-Peter, de Senerpont Domis, Lisette N., Teurlincx, Sven, Seelen, Laura, Lürling, Miquel, Verstijnen, Yvon, Maliaka, Valentini, Fonvielle, Jeremy, Visser, Petra M., Verspagen, Jolanda, van Herk, Maria, Antoniou, Maria G., Tsiarta, Nikoletta, McCarthy, Valerie, Perello, Victor C., Machado-Vieira, Danielle, de Oliveira, Alinne Gurjão, Maronić, Dubravka Špoljarić, Stević, Filip, Pfeiffer, Tanja Žuna, Vucelić, Itana Bokan, Žutinić, Petar, Udovič, Marija Gligora, Plenković-Moraj, Anđelka, Bláha, Luděk, Geriš, Rodan, Fránková, Markéta, Christoffersen, Kirsten Seestern, Warming, Trine Perlt, Feldmann, Tõnu, Laas, Alo, Panksep, Kristel, Tuvikene, Lea, Kangro, Kersti, Koreivienė, Judita, Karosienė, Jūratė, Kasperovičienė, Jūratė, Savadova-Ratkus, Ksenija, Vitonytė, Irma, Häggqvist, Kerstin, Salmi, Pauliina, Arvola, Lauri, Rothhaupt, Karl, Avagianos, Christos, Kaloudis, Triantafyllos, Gkelis, Spyros, Panou, Manthos, Triantis, Theodoros, Zervou, Sevasti-Kiriaki, Hiskia, Anastasia, Obertegger, Ulrike, Boscaini, Adriano, Flaim, Giovanna, Salmaso, Nico, Cerasino, Leonardo, Haande, Sigrid, Skjelbred, Birger, Grabowska, Magdalena, Karpowicz, Maciej, Chmura, Damian, Nawrocka, Lidia, Kobos, Justyna, Mazur-Marzec, Hanna, Alcaraz-Párraga, Pablo, Wilk-Woźniak, Elżbieta, Krztoń, Wojciech, Walusiak, Edward, Gagala-Borowska, Ilona, Mankiewicz-Boczek, Joana, Toporowska, Magdalena, Pawlik-Skowronska, Barbara, Niedźwiecki, Michał, Pęczuła, Wojciech, Napiórkowska-Krzebietke, Agnieszka, Dunalska, Julita, Sieńska, Justyna, Szymański, Daniel, Kruk, Marek, Budzyńska, Agnieszka, Goldyn, Ryszard, Kozak, Anna, Rosińska, Joanna, Szeląg-Wasielewska, Elżbieta, Domek, Piotr, Jakubowska-Krepska, Natalia, Kwasizur, Kinga, Messyasz, Beata, Pełechata, Aleksandra, Pełechaty, Mariusz, Kokocinski, Mikolaj, Madrecka-Witkowska, Beata, Kostrzewska-Szlakowska, Iwona, Frąk, Magdalena, Bańkowska-Sobczak, Agnieszka, Wasilewicz, Michał, Ochocka, Agnieszka, Pasztaleniec, Agnieszka, Jasser, Iwona, Antão-Geraldes, Ana M., Leira, Manel, Vasconcelos, Vitor, Morais, Joao, Vale, Micaela, Raposeiro, Pedro M., Gonçalves, Vítor, Aleksovski, Boris, Krstić, Svetislav, Nemova, Hana, Drastichova, Iveta, Chomova, Lucia, Remec-Rekar, Spela, Elersek, Tina, Hansson, Lars-Anders, Urrutia-Cordero, Pablo, Bravo, Andrea G., Buck, Moritz, Colom-Montero, William, Mustonen, Kristiina, Pierson, Don, Yang, Yang, Richardson, Jessica, Edwards, Christine, Cromie, Hannah, Delgado-Martín, Jordi, García, David, Cereijo, Jose Luís, Gomà, Joan, Trapote, Mari Carmen, Vegas-Vilarrúbia, Teresa, Obrador, Biel, García-Murcia, Ana, Real, Monserrat, Romans, Elvira, Noguero-Ribes, Jordi, Duque, David Parreño, Fernández-Morán, Elísabeth, Úbeda, Bárbara, Gálvez, José Ángel, Catalán, Núria, Pérez-Martínez, Carmen, Ramos-Rodríguez, Eloísa, Cillero-Castro, Carmen, Moreno-Ostos, Enrique, Blanco, José María, Rodríguez, Valeriano, Montes-Pérez, Jorge Juan, Palomino, Roberto L., Rodríguez-Pérez, Estela, Hernández, Armand, Carballeira, Rafael, Camacho, Antonio, Picazo, Antonio, Rochera, Carlos, Santamans, Anna C., Ferriol, Carmen, Romo, Susana, Soria, Juan Miguel, Özen, Arda, Karan, Tünay, Demir, Nilsun, Beklioğlu, Meryem, Filiz, Nur, Levi, Eti, Iskin, Uğur, Bezirci, Gizem, Tavşanoğlu, Ülkü Nihan, Çelik, Kemal, Ozhan, Koray, Karakaya, Nusret, Koçer, Mehmet Ali Turan, Yilmaz, Mete, Maraşlıoğlu, Faruk, Fakioglu, Özden, Soylu, Elif Neyran, Yağcı, Meral Apaydın, Çınar, Şakir, Çapkın, Kadir, Yağcı, Abdulkadir, Cesur, Mehmet, Bilgin, Fuat, Bulut, Cafer, Uysal, Rahmi, Latife, Köker, Akçaalan, Reyhan, Albay, Meriç, Alp, Mehmet Tahir, Özkan, Korhan, Sevindik, Tuğba Ongun, Tunca, Hatice, Önem, Burçin, Paerl, Hans, Carey, Cayelan C., and Ibelings, Bastiaan W.

Abstract

To determine the drivers of phytoplankton biomass, we collected standardized morphometric, physical, and biological data in 230 lakes across the Mediterranean, Continental, and Boreal climatic zones of the European continent. Multilinear regression models tested on this snapshot of mostly eutrophic lakes (median total phosphorus [TP] = 0.06 and total nitrogen [TN] = 0.7 mg L−1), and its subsets (2 depth types and 3 climatic zones), show that light climate and stratification strength were the most significant explanatory variables for chlorophyll a (Chl a) variance. TN was a significant predictor for phytoplankton biomass for shallow and continental lakes, while TP never appeared as an explanatory variable, suggesting that under high TP, light, which partially controls stratification strength, becomes limiting for phytoplankton development. Mediterranean lakes were the warmest yet most weakly stratified and had significantly less Chl a than Boreal lakes, where the temperature anomaly from the long-term average, during a summer heatwave was the highest (+4°C) and showed a significant, exponential relationship with stratification strength. This European survey represents a summer snapshot of phytoplankton biomass and its drivers, and lends support that light and stratification metrics, which are both affected by climate change, are better predictors for phytoplankton biomass in nutrient-rich lakes than nutrient concentrations and surface temperature.

Published
2021

34. Global CO2 emissions from dry inland waters share common drivers across ecosystems

Author

Keller, Philipp S., Catalán, Núria, von Schiller, Daniel, Grossart, Hans-Peter, Koschorreck, Matthias, Obrador, Biel, Frassl, M. A., Karakaya, N., Barros, Nathan, Howitt, J. A., Mendoza-Lera, C., Pastor, A., Flaim, G., Aben, R., Riis, T., Arce, M. I., Onandia, G., Paranaíba, José R., Linkhorst, Annika, del Campo, R., Amado, André M., Cauvy-Fraunié, S., Brothers, S., Condon, J., Mendonça, Raquel, Reverey, F., Rõõm, E.-I., Datry, T., Roland, Fábio, Laas, A., Obertegger, U., Park, J.-H., Wang, H., Kosten, Sarian, Gómez, R., Feijoó, C., Elosegi, A., Sánchez-Montoya, M. M., Finlayson, C. M., Melita, M., Oliveira Junior, E. S., Muniz, C. C., Gómez-Gener, L., Leigh, C., Zhang, Q., Marcé, Rafael, Keller, Philipp S., Catalán, Núria, von Schiller, Daniel, Grossart, Hans-Peter, Koschorreck, Matthias, Obrador, Biel, Frassl, M. A., Karakaya, N., Barros, Nathan, Howitt, J. A., Mendoza-Lera, C., Pastor, A., Flaim, G., Aben, R., Riis, T., Arce, M. I., Onandia, G., Paranaíba, José R., Linkhorst, Annika, del Campo, R., Amado, André M., Cauvy-Fraunié, S., Brothers, S., Condon, J., Mendonça, Raquel, Reverey, F., Rõõm, E.-I., Datry, T., Roland, Fábio, Laas, A., Obertegger, U., Park, J.-H., Wang, H., Kosten, Sarian, Gómez, R., Feijoó, C., Elosegi, A., Sánchez-Montoya, M. M., Finlayson, C. M., Melita, M., Oliveira Junior, E. S., Muniz, C. C., Gómez-Gener, L., Leigh, C., Zhang, Q., and Marcé, Rafael

Abstract

Many inland waters exhibit complete or partial desiccation, or have vanished due to global change, exposing sediments to the atmosphere. Yet, data on carbon dioxide (CO2) emissions from these sediments are too scarce to upscale emissions for global estimates or to understand their fundamental drivers. Here, we present the results of a global survey covering 196 dry inland waters across diverse ecosystem types and climate zones. We show that their CO2 emissions share fundamental drivers and constitute a substantial fraction of the carbon cycled by inland waters. CO2 emissions were consistent across ecosystem types and climate zones, with local characteristics explaining much of the variability. Accounting for such emissions increases global estimates of carbon emissions from inland waters by 6% (~0.12 Pg C y−1). Our results indicate that emissions from dry inland waters represent a significant and likely increasing component of the inland waters carbon cycle.

Published
2020
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35. Global CO2 emissions from dry inland waters share common drivers across ecosystems

Author

German Research Foundation, Ministerio de Ciencia, Innovación y Universidades (España), Eusko Jaurlaritza, Fundación BBVA, European Research Council, Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil), Carlsberg Foundation, Dutch Research Council, Ministry of Education and Research (Estonia), Estonian Research Council, National Research Foundation of Korea, Federal Ministry of Education and Research (Germany), German Academic Exchange Service, Fundación Séneca, Fundación Ramón Areces, Universidad de Murcia, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Brasil), Office français de la biodiversité (France), Agencia Estatal de Investigación (España), European Commission, European Cooperation in Science and Technology, Keller, P S, Catalán, Núria, Von Schiller, D., Grossart, H-P, Koschorreck, M, Obrador, Biel, Frassl, M A, Karakaya, N, Barros, N, Howitt, J A, Mendoza-Lera, Clara, Pastor, Ada, Flaim, G, Aben, R, Riis, T, Arce, M I, Onandía, Gabriela, Paranaíba, J R, Linkhorst, A, del Campo, Rubén, Amado, A M, Cauvy-Fraunié, S, Brothers, S, Condon, J, Mendonça, R F, Reverey, F, Rõõm, E-I, Datry, T, Roland, F, Laas, A, Obertegger, U, Park, J-H, Wang, H, Kosten, S, Gómez, R, Feijoó, C, Elosegi, A, Sánchez-Montoya, María Mar, Finlayson, C M, Melita, M, Oliveira Junior, E S, Muniz, C C, Gómez-Gener, Lluís, Leigh, C, Zhang, Q, Marcé, Rafael, German Research Foundation, Ministerio de Ciencia, Innovación y Universidades (España), Eusko Jaurlaritza, Fundación BBVA, European Research Council, Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil), Carlsberg Foundation, Dutch Research Council, Ministry of Education and Research (Estonia), Estonian Research Council, National Research Foundation of Korea, Federal Ministry of Education and Research (Germany), German Academic Exchange Service, Fundación Séneca, Fundación Ramón Areces, Universidad de Murcia, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Brasil), Office français de la biodiversité (France), Agencia Estatal de Investigación (España), European Commission, European Cooperation in Science and Technology, Keller, P S, Catalán, Núria, Von Schiller, D., Grossart, H-P, Koschorreck, M, Obrador, Biel, Frassl, M A, Karakaya, N, Barros, N, Howitt, J A, Mendoza-Lera, Clara, Pastor, Ada, Flaim, G, Aben, R, Riis, T, Arce, M I, Onandía, Gabriela, Paranaíba, J R, Linkhorst, A, del Campo, Rubén, Amado, A M, Cauvy-Fraunié, S, Brothers, S, Condon, J, Mendonça, R F, Reverey, F, Rõõm, E-I, Datry, T, Roland, F, Laas, A, Obertegger, U, Park, J-H, Wang, H, Kosten, S, Gómez, R, Feijoó, C, Elosegi, A, Sánchez-Montoya, María Mar, Finlayson, C M, Melita, M, Oliveira Junior, E S, Muniz, C C, Gómez-Gener, Lluís, Leigh, C, Zhang, Q, and Marcé, Rafael

Abstract

Many inland waters exhibit complete or partial desiccation, or have vanished due to global change, exposing sediments to the atmosphere. Yet, data on carbon dioxide (CO2) emissions from these sediments are too scarce to upscale emissions for global estimates or to understand their fundamental drivers. Here, we present the results of a global survey covering 196 dry inland waters across diverse ecosystem types and climate zones. We show that their CO2 emissions share fundamental drivers and constitute a substantial fraction of the carbon cycled by inland waters. CO2 emissions were consistent across ecosystem types and climate zones, with local characteristics explaining much of the variability. Accounting for such emissions increases global estimates of carbon emissions from inland waters by 6% (~0.12 Pg C y-1). Our results indicate that emissions from dry inland waters represent a significant and likely increasing component of the inland waters carbon cycle.

Published
2020

40. Simulating rewetting events in intermittent rivers and ephemeral streams: A global analysis of leached nutrients and organic matter

Author

Shumilova, Oleksandra, Zak, Dominik, Datry, Thibault, von Schiller, Daniel, Corti, Roland, Foulquier, Arnaud, Obrador, Biel, Tockner, Klement, Allan, Daniel C, Altermatt, Florian, Arce, María Isabel, Arnon, Shai, Banas, Damien, Banegas‐Medina, Andy, Beller, Erin, Blanchette, Melanie L, Blanco‐Libreros, Juan F, Blessing, Joanna, Boëchat, Iola Gonçalves, Boersma, Kate, Bogan, Michael T, Bonada, Núria, Bond, Nick R, Brintrup, Kate, Bruder, Andreas, Burrows, Ryan, Cancellario, Tommaso, Carlson, Stephanie M, Cauvy‐Fraunié, Sophie, Cid, Núria, Little, Chelsea J, et al, University of Zurich, and Shumilova, Oleksandra

Subjects
leaf litter, rewetting, UFSP13-8 Global Change and Biodiversity, sediments, 2306 Global and Planetary Change, 2300 General Environmental Science, 10127 Institute of Evolutionary Biology and Environmental Studies, leaching, 2304 Environmental Chemistry, temporary rivers, 570 Life sciences, biology, 590 Animals (Zoology), biofilms, 2303 Ecology
Published
2019

41. Assessing the fate of a long-term C sink: organic carbon loss in lake sediments as a consequence of permanent drying

Author

Catalan Garcia, Núria, Kalbitz, K, Light, Tricia, Giralt, Santiago, Montes-Pérez, J., Moreno-Ostos, Enrique, Obrador, Biel, Koschorreck, Matthias, Borrego, Carles, and Marcé , Rafael

Abstract

EGU General Assembly 2019, in Viena, Austria, 7–12 April 2019, The stability of long-term carbon (C) sinks is especially relevant for the global C balance, as they withdraw C from the active cycling loop at larger time scales than the CO2 atmospheric residence time. Organic C buried in sediments of freshwater ecosystems can remain there during millennia, representing a long-term C sink of similar magnitude than the organic C buried in the whole ocean floor. Therefore, it is crucial to assess the stability of the inland waters’ sediments C sink to complete our understanding on C cycling and its potential feedbacks with global warming. At present, freshwater ecosystems are contracting and even disappearing in some regions, including some of the largest lakes and reservoirs worldwide. When the water shed disappears, sediments become exposed to oxygen, changing redox conditions that increase the potential for sedimentary organic materials of being degraded. Accordingly, recent investigations have shown that drying sediments of inland water bodies emit large quantities of CO2 to the atmosphere.

Published
2019

42. Simulating rewetting events in intermittent rivers and ephemeral streams: A global analysis of leached nutrients and organic matter

Author

Shumilova, Oleksandra Zak, Dominik Datry, Thibault von Schiller, Daniel Corti, Roland Foulquier, Arnaud Obrador, Biel Tockner, Klement Allan, Daniel C. Altermatt, Florian Arce, María Isabel Arnon, Shai Banas, Damien Banegas‐Medina, Andy Beller, Erin Blanchette, Melanie L. Blanco‐Libreros, Juan F. Blessing, Joanna Gonçalves Boëchat, Iola Boersma, Kate Bogan, Michael T. Bonada, Núria Bond, Nick R. Brintrup, Kate Bruder, Andreas Burrows, Ryan Cancellario, Tommaso Carlson, Stephanie M. Cauvy‐Fraunié, Sophie Cid, Núria Danger, Michael de Freitas Terra, Bianca De Girolamo, Anna Maria del Campo, Ruben Dyer, Fiona Elosegi, Arturo Faye, Emile Febria, Catherine Figueroa, Ricardo Four, Brian Gessner, Mark O. Gnohossou, Pierre Gómez Cerezo, Rosa Gomez‐Gener, Lluís Graça, Manuel A.S. Guareschi, Simone Gücker, Björn Hwan, Jason L. Kubheka, Skhumbuzo Langhans, Simone Daniela Leigh, Catherine Little, Chelsea J. Lorenz, Stefan Marshall, Jonathan McIntosh, Angus Mendoza‐Lera, Clara Meyer, Elisabeth Irmgard Miliša, Marko Mlambo, Musa C. Moleón, Marcos Negus, Peter Niyogi, Dev Papatheodoulou, Athina Pardo, Isabel Paril, Petr Pešić, Vladimir Rodriguez‐Lozano, Pablo Rolls, Robert J. Sanchez‐Montoya, Maria Mar Savić, Ana Steward, Alisha Stubbington, Rachel Taleb, Amina Vander Vorste, Ross Waltham, Nathan Zoppini, Annamaria Zarfl, Christiane

Subjects
biofilms, leaching, leaf litter, rewetting, sediments, temporary rivers
Abstract

Climate change and human pressures are changing the global distribution and the extent of intermittent rivers and ephemeral streams (IRES), which comprise half of the global river network area. IRES are characterized by periods of flow cessation, during which channel substrates accumulate and undergo physico‐chemical changes (preconditioning), and periods of flow resumption, when these substrates are rewetted and release pulses of dissolved nutrients and organic matter (OM). However, there are no estimates of the amounts and quality of leached substances, nor is there information on the underlying environmental constraints operating at the global scale. We experimentally simulated, under standard laboratory conditions, rewetting of leaves, riverbed sediments, and epilithic biofilms collected during the dry phase across 205 IRES from five major climate zones. We determined the amounts and qualitative characteristics of the leached nutrients and OM, and estimated their areal fluxes from riverbeds. In addition, we evaluated the variance in leachate characteristics in relation to selected environmental variables and substrate characteristics. We found that sediments, due to their large quantities within riverbeds, contribute most to the overall flux of dissolved substances during rewetting events (56%–98%), and that flux rates distinctly differ among climate zones. Dissolved organic carbon, phenolics, and nitrate contributed most to the areal fluxes. The largest amounts of leached substances were found in the continental climate zone, coinciding with the lowest potential bioavailability of the leached OM. The opposite pattern was found in the arid zone. Environmental variables expected to be modified under climate change (i.e. potential evapotranspiration, aridity, dry period duration, land use) were correlated with the amount of leached substances, with the strongest relationship found for sediments. These results show that the role of IRES should be accounted for in global biogeochemical cycles, especially because prevalence of IRES will increase due to increasing severity of drying events.

Published
2019

43. Sediment respiration pulses in intermittent rivers and ephemeral streams

Author

von Schiller, Daniel, Datry, Thibault, Corti, Roland, Foulquier, Arnaud, Tockner, K., Marcé, R., García-Baquero, G., Odriozola, I., Obrador, Biel, Elosegi, Arturo, Mendoza-Lera, C., Gessner, M.O., Stubbington, R., Albariño, R., Allen, D.C., Altermatt, Florian, Arce, María Isabel, Arnon, Shai, Banas, Damien, Banegas-Medina, Andy, Beller, Erin, Blanchette, Melanie L., Blanco-Libreros, Juan F., Blessing, Joanna J., Boëchat, G., Boersma, Kate S., Bogan, Michael T., Bonada, Núria, Bond, Nick R., Brintrup, K., Bruder, Andreas, Burrows, Ryan M., Cancellario, Tommaso, Carlson, Stephanie M., Cauvy-Fraunié, Sophie, Cid, N., Danger, Michael, de Freitas Terra, Bianca, Dehedin, A., De Girolamo, Anna Maria, del Campo, Ruben, Diaz-Villanueva, V.D., Duerdoth, C.P., Dyer, Fiona, and Faye, Emile

Abstract

Intermittent rivers and ephemeral streams (IRES) may represent over half the global stream network, but their contribution to respiration and carbon dioxide (CO2) emissions is largely undetermined. In particular, little is known about the variability and drivers of respiration in IRES sediments upon rewetting, which could result in large pulses of CO2. We present a global study examining sediments from 200 dry IRES reaches spanning multiple biomes. Results from standardized assays show that mean respiration increased 32-fold to 66-fold upon sediment rewetting. Structural equation modeling indicates that this response was driven by sediment texture and organic matter quantity and quality, which, in turn, were influenced by climate, land use, and riparian plant cover. Our estimates suggest that respiration pulses resulting from rewetting of IRES sediments could contribute significantly to annual CO2 emissions from the global stream network, with a single respiration pulse potentially increasing emission by 0.2–0.7%. As the spatial and temporal extent of IRES increases globally, our results highlight the importance of recognizing the influence of wetting-drying cycles on respiration and CO2 emissions in stream networks.

Published
2019

45. Simulating rewetting events in intermittent rivers and ephemeral streams: A global analysis of leached nutrients and organic matter

Author

Shumilova, Oleksandra; https://orcid.org/0000-0002-6270-7242, Zak, Dominik; https://orcid.org/0000-0002-1229-5294, Datry, Thibault; https://orcid.org/0000-0003-1390-6736, von Schiller, Daniel; https://orcid.org/0000-0002-9493-3244, Corti, Roland; https://orcid.org/0000-0001-9548-1772, Foulquier, Arnaud; https://orcid.org/0000-0002-8308-5841, Obrador, Biel; https://orcid.org/0000-0003-4050-0491, Tockner, Klement; https://orcid.org/0000-0002-0038-8151, Allan, Daniel C; https://orcid.org/0000-0002-0451-0564, Altermatt, Florian; https://orcid.org/0000-0002-4831-6958, Arce, María Isabel; https://orcid.org/0000-0001-7407-3884, Arnon, Shai; https://orcid.org/0000-0002-7109-8979, Banas, Damien, Banegas‐Medina, Andy, Beller, Erin, Blanchette, Melanie L, Blanco‐Libreros, Juan F; https://orcid.org/0000-0003-0507-2401, Blessing, Joanna; https://orcid.org/0000-0001-7679-1222, Boëchat, Iola Gonçalves; https://orcid.org/0000-0002-9651-6364, Boersma, Kate; https://orcid.org/0000-0002-0707-3283, Bogan, Michael T, Bonada, Núria; https://orcid.org/0000-0002-2983-3335, Bond, Nick R; https://orcid.org/0000-0003-4294-6008, Brintrup, Kate, Bruder, Andreas; https://orcid.org/0000-0002-4591-491X, Burrows, Ryan; https://orcid.org/0000-0002-3296-1864, Cancellario, Tommaso, Carlson, Stephanie M; https://orcid.org/0000-0003-3055-6483, Cauvy‐Fraunié, Sophie; https://orcid.org/0000-0001-8600-0519, Cid, Núria, Little, Chelsea J, et al, Shumilova, Oleksandra; https://orcid.org/0000-0002-6270-7242, Zak, Dominik; https://orcid.org/0000-0002-1229-5294, Datry, Thibault; https://orcid.org/0000-0003-1390-6736, von Schiller, Daniel; https://orcid.org/0000-0002-9493-3244, Corti, Roland; https://orcid.org/0000-0001-9548-1772, Foulquier, Arnaud; https://orcid.org/0000-0002-8308-5841, Obrador, Biel; https://orcid.org/0000-0003-4050-0491, Tockner, Klement; https://orcid.org/0000-0002-0038-8151, Allan, Daniel C; https://orcid.org/0000-0002-0451-0564, Altermatt, Florian; https://orcid.org/0000-0002-4831-6958, Arce, María Isabel; https://orcid.org/0000-0001-7407-3884, Arnon, Shai; https://orcid.org/0000-0002-7109-8979, Banas, Damien, Banegas‐Medina, Andy, Beller, Erin, Blanchette, Melanie L, Blanco‐Libreros, Juan F; https://orcid.org/0000-0003-0507-2401, Blessing, Joanna; https://orcid.org/0000-0001-7679-1222, Boëchat, Iola Gonçalves; https://orcid.org/0000-0002-9651-6364, Boersma, Kate; https://orcid.org/0000-0002-0707-3283, Bogan, Michael T, Bonada, Núria; https://orcid.org/0000-0002-2983-3335, Bond, Nick R; https://orcid.org/0000-0003-4294-6008, Brintrup, Kate, Bruder, Andreas; https://orcid.org/0000-0002-4591-491X, Burrows, Ryan; https://orcid.org/0000-0002-3296-1864, Cancellario, Tommaso, Carlson, Stephanie M; https://orcid.org/0000-0003-3055-6483, Cauvy‐Fraunié, Sophie; https://orcid.org/0000-0001-8600-0519, Cid, Núria, Little, Chelsea J, and et al

Abstract

Climate change and human pressures are changing the global distribution and the extent of intermittent rivers and ephemeral streams (IRES), which comprise half of the global river network area. IRES are characterized by periods of flow cessation, during which channel substrates accumulate and undergo physico‐chemical changes (preconditioning), and periods of flow resumption, when these substrates are rewetted and release pulses of dissolved nutrients and organic matter (OM). However, there are no estimates of the amounts and quality of leached substances, nor is there information on the underlying environmental constraints operating at the global scale. We experimentally simulated, under standard laboratory conditions, rewetting of leaves, riverbed sediments, and epilithic biofilms collected during the dry phase across 205 IRES from five major climate zones. We determined the amounts and qualitative characteristics of the leached nutrients and OM, and estimated their areal fluxes from riverbeds. In addition, we evaluated the variance in leachate characteristics in relation to selected environmental variables and substrate characteristics. We found that sediments, due to their large quantities within riverbeds, contribute most to the overall flux of dissolved substances during rewetting events (56%–98%), and that flux rates distinctly differ among climate zones. Dissolved organic carbon, phenolics, and nitrate contributed most to the areal fluxes. The largest amounts of leached substances were found in the continental climate zone, coinciding with the lowest potential bioavailability of the leached OM. The opposite pattern was found in the arid zone. Environmental variables expected to be modified under climate change (i.e. potential evapotranspiration, aridity, dry period duration, land use) were correlated with the amount of leached sub‐ stances, with the strongest relationship found for sediments. These results show that the role of IRES should be accounted for in

Published
2019

46. A conceptual framework for understanding the biogeochemistry of dry riverbeds through the lens of soil science

Author

Arcea, María Isabel, Mendoza-Lera, Clara, Almagro, María, Catalán, Núria, Romaní, Anna, Martí, Eugènia, Gómez, Rosa, Bernal, Susana, Foulquier, Arnaud, Mutz, Michael, Marcé, Rafael, Zoppini, Annamaria, Gionchetta, Giulia, Weigelhofer, Gabriele, del Campo, Rubén, Robinson, Christopher T., Gilmer, Alan, Rulik, Martin, Obrador, Biel, Shumilova, Oleksandra, Zlatanović, Sanja, Arnon, Shai, Baldrian, Petr, Singer, Gabriel, Datry, Thibault, Skoulikidis, Nikos, Tietjen, Britta, Von Schiller, D., Arcea, María Isabel, Mendoza-Lera, Clara, Almagro, María, Catalán, Núria, Romaní, Anna, Martí, Eugènia, Gómez, Rosa, Bernal, Susana, Foulquier, Arnaud, Mutz, Michael, Marcé, Rafael, Zoppini, Annamaria, Gionchetta, Giulia, Weigelhofer, Gabriele, del Campo, Rubén, Robinson, Christopher T., Gilmer, Alan, Rulik, Martin, Obrador, Biel, Shumilova, Oleksandra, Zlatanović, Sanja, Arnon, Shai, Baldrian, Petr, Singer, Gabriel, Datry, Thibault, Skoulikidis, Nikos, Tietjen, Britta, and Von Schiller, D.

Abstract

Intermittent rivers and ephemeral streams (IRES) encompass fluvial ecosystems that eventually stop flowing and run dry at some point in space and time. During the dry phase, channels of IRES consist mainly of dry riverbeds (DRBs), prevalent yet widely unexplored ecotones between dry and wet phases that can strongly influence the biogeochemistry of fluvial networks. DRBs are often overlooked because they do not strictly belong to either domain of soil or freshwater science. Due to this dual character of DRBs, we suggest that concepts and knowledge from soil science can be used to expand the understanding of IRES biogeochemistry. Based on this idea, we propose that DRBs can be conceptually understood as early stage soils exhibiting many similarities with soils through two main forces: i) time since last sediment transport event, and ii) the development status of stabilizing structures (e.g. soil crusts and/or vascular plants). Our analysis suggests that while DRBs and soils may differ in master physical attributes (e.g. soil horizons vs fluvial sedimentary facies), they become rapidly comparable in terms of microbial communities and biogeochemical processes. We further propose that drivers of DRBs biogeochemistry are similar to those of soils and, hence, concepts and methods used in soil science are transferable to DRBs research. Finally, our paper presents future research directions to advance the knowledge of DRBs and to understand their role in the biogeochemistry of intermittent fluvial networks.

Published
2019

47. Sèiem

Author

Obrador, Biel

Abstract

Sèiem i ens miràvem de reüll. Jo, al costat dret de l’embarcació, amb els peus damunt la caixa blanca, valuosíssima, que mantenia portàtil, llibretes, xeringues i vials a redossa de la inundació. Tot eren regalims

Published
2018

48. Temperature Effects Explain Continental Scale Distribution of Cyanobacterial Toxins: Data descriptor

Author

Mantzouki, Evanthia, Lürling, Miquel, Fastner, Jutta, de Senerpont Domis, Lisette, Wilk-Woźniak, Elżbieta, Koreivienė, Judita, Seelen, Laura, Teurlincx, Sven, Verstijnen, Yvon, Krztoń, Wojciech, Walusiak, Edward, Karosienė, Jūratė, Kasperovičienė, Jūratė, Savadova, Ksenija, Vitonytė, Irma, Cillero-Castro, Carmen, Budzyńska, Agnieszka, Goldyn, Ryszard, Kozak, Anna, Rosińska, Joanna, Szeląg-Wasielewska, Elżbieta, Domek, Piotr, Jakubowska-Krepska, Natalia, Kwasizur, Kinga, Messyasz, Beata, Pełechaty, Aleksandra, Pełechaty, Mariusz, Kokocinski, Mikolaj, García-Murcia, Ana, Real, Monserrat, Romans, Elvira, Noguero-Ribes, Jordi, Duque, David Parreño, Fernández-Morán, Elísabeth, Karakaya, Nusret, Häggqvist, Kerstin, Demir, Nilsun, Beklioğlu, Meryem, Filiz, Nur, Levi, Eti E., Iskin, Uğur, Bezirci, Gizem, Tavşanoğlu, Ülkü Nihan, Özhan, Koray, Gkelis, Spyros, Panou, Manthos, Fakioglu, Özden, Avagianos, Christos, Kaloudis, Triantafyllos, Çelik, Kemal, Yilmaz, Mete, Marcé, Rafael, Catalán, Nuria, Bravo, Andrea G., Buck, Moritz, Colom-Montero, William, Mustonen, Kristiina, Pierson, Don, Yang, Yang, Raposeiro, Pedro M., Gonçalves, Vítor, Antoniou, Maria G., Tsiarta, Nikoletta, McCarthy, Valerie, Perello, Victor C., Feldmann, Tõnu, Laas, Alo, Panksep, Kristel, Tuvikene, Lea, Gagala, Ilona, Mankiewicz-Boczek, Joana, Yağcı, Meral Apaydın, Çınar, Şakir, Çapkın, Kadir, Yağcı, Abdulkadir, Cesur, Mehmet, Bilgin, Fuat, Bulut, Cafer, Uysal, Rahmi, Obertegger, Ulrike, Boscaini, Adriano, Flaim, Giovanna, Salmaso, Nico, Cerasino, Leonardo, Richardson, Jessica, Visser, Petra M, Verspagen, Jolanda M. H., Karan, Tünay, Soylu, Elif Neyran, Maraşlıoğlu, Faruk, Napiórkowska-Krzebietke, Agnieszka, Ochocka, Agnieszka, Pasztaleniec, Agnieszka, Antão-Geraldes, Ana M., Vasconcelos, Vitor, Morais, João, Vale, Micaela, Köker, Latife, Akçaalan, Reyhan, Albay, Meriç, Špoljarić Maronić, Dubravka, Stević, Filip, Žuna Pfeiffer, Tanja, Fonvielle, Jeremy, Straile, Dietmar, Rothhaupt, Karl-Otto, Hansson, Lars-Anders, Urrutia-Cordero, Pablo, Bláha, Luděk, Geriš, Rodan, Fránková, Markéta, Koçer, Mehmet Ali Turan, Alp, Mehmet Tahir, Remec-Rekar, Spela, Elersek, Tina, Triantis, Theodoros, Zervou, Sevasti-Kiriaki, Hiskia, Anastasia, Haande, Sigrid, Skjelbred, Birger, Madrecka, Beata, Nemova, Hana, Drastichova, Iveta, Chomova, Lucia, Edwards, Christine, Sevindik, Tuğba Ongun, Tunca, Hatice, Önem, Burçin, Aleksovski, Boris, Krstić, Svetislav, Vucelić, Itana Bokan, Nawrocka, Lidia, Salmi, Pauliina, Machado-Vieira, Danielle, de Oliveira, Alinne Gurjão, Delgado-Martín, Jordi, García-García, David, Cereijo, Jose Luís, Gomà, Joan, Trapote, Mari Carmen, Vegas-Vilarrúbia, Teresa, Obrador, Biel, Grabowska, Magdalena, Karpowicz, Maciej, Chmura, Damian, Úbeda, Bárbara, Gálvez, José Ángel, Özen, Arda, Christoffersen, Kirsten Seestern, Warming, Trine Perlt, Kobos, Justyna, Mazur-Marzec, Hanna, Pérez-Martínez, Carmen, Ramos-Rodríguez, Eloísa, Arvola, Lauri, Alcaraz-Párraga, Pablo, Toporowska, Magdalena, Pawlik-Skowronska, Barbara, Niedźwiecki, Michał, Pęczuła, Wojciech, Leira, Manel, Hernández, Armand, Moreno-Ostos, Enrique, Blanco, José María, Rodríguez, Valeriano, Montes-Pérez, Jorge Juan, Palomino, Roberto L., Rodríguez-Pérez, Estela, Carballeira, Rafael, Camacho, Antonio, Picazo, Antonio, Rochera, Carlos, Santamans, Anna C., Ferriol, Carmen, Romo, Susana, Soria, Juan Miguel, Dunalska, Julita, Sieńska, Justyna, Szymański, Daniel, Kruk, Marek, Kostrzewska-Szlakowska, Iwona, Jasser, Iwona, Žutinić, Petar, Gligora Udovič, Marija, Plenković-Moraj, Anđelka, Frąk, Magdalena, Bańkowska-Sobczak, Agnieszka, Wasilewicz, Michał, Özkan, Korhan, Maliaka, Valentini, Kangro, Kersti, Grossart, Hans-Peter, Paerl, Hans W., Carey, Cayelan C., Ibelings, Bas W., Aquatic Ecology (AqE), and AKWA

Subjects
international, Journal Article
Abstract

situ Insight into how environmental change determines the production and distribution of cyanobacterial toxins is necessary for risk assessment. Management guidelines currently focus on hepatotoxins (microcystins). Increasing attention is given to other classes, such as neurotoxins (e.g., anatoxin-a) and cytotoxins (e.g., cylindrospermopsin) due to their potency. Most studies examine the relationship between individual toxin variants and environmental factors, such as nutrients, temperature and light. In summer 2015, we collected samples across Europe to investigate the effect of nutrient and temperature gradients on the variability of toxin production at a continental scale. Direct and indirect effects of temperature were the main drivers of the spatial distribution in the toxins produced by the cyanobacterial community, the toxin concentrations and toxin quota. Generalized linear models showed that a Toxin Diversity Index (TDI) increased with latitude, while it decreased with water stability. Increases in TDI were explained through a significant increase in toxin variants such as MC-YR, anatoxin and cylindrospermopsin, accompanied by a decreasing presence of MC-LR. While global warming continues, the direct and indirect effects of increased lake temperatures will drive changes in the distribution of cyanobacterial toxins in Europe, potentially promoting selection of a few highly toxic species or strains.

Published
2018

49. Dry habitats sustain high CO2 emissions from temporary ponds across seasons

Author

Obrador, Biel, von Schiller, Daniel, Marcé, Rafael, Gómez-Gener, Lluís, Koschorreck, Matthias, Borrego, Carles, Catalán, Núria, and Universitat de Barcelona

Subjects
Ekologi, Ecology, lcsh:R, Sequeres, lcsh:Medicine, Miljövetenskap, Article, Estany, Droughts, Carbon dioxide, Tin, lcsh:Q, Diòxid de carboni, Metà, lcsh:Science, Methane, Environmental Sciences
Abstract

Despite the increasing understanding of the magnitude and drivers of carbon gas emissions from inland waters, the relevance of water fluctuation and associated drying on their dynamics is rarely addressed. Here, we quantified CO2 and CH4 fluxes from a set of temporary ponds across seasons. The ponds were in all occasion net CO2 emitters irrespective of the presence or absence of water. While the CO2 fluxes were in the upper range of emissions for freshwater lentic systems, CH4 fluxes were mostly undetectable. Dry habitats substantially contributed to these emissions and were always a source of CO2, whereas inundated habitats acted either as a source or a sink of atmospheric CO2 along the year. Higher concentrations of coloured and humic organic matter in water and sediment were linked to higher CO2 emissions. Composition of the sediment microbial community was related both to dissolved organic matter concentration and composition, but we did not find a direct link with CO2 fluxes. The presence of methanogenic archaea in most ponds suggested the potential for episodic CH4 production and emission. Our results highlight the need for spatially and temporally inclusive approaches that consider the dry phases and habitats to characterize carbon cycling in temporary systems.

Published
2018

50. Data Descriptor : A European Multi Lake Survey dataset of environmental variables, phytoplankton pigments and cyanotoxins

Author

Mantzouki, Evanthia, Campbell, James, Loon, Emiel van, Visser, Petra, Konstantinou, Iosif, Antoniou, Maria G., Giuliani, Grégory, Machado-Vieira, Danielle, Oliveira, Alinne Gurjão de, Maronić, Dubravka Špoljarić, Stević, Filip, Fakioglu, Özden, Soylu, Elif Neyran, Yağcı, Meral Apaydın, Çınar, Şakir, Çapkın, Kadir, Yağcı, Abdulkadir, Cesur, Mehmet, Bilgin, Fuat, Bulut, Cafer, Fránková, Markéta, Vasconcelos, Vitor, Uysal, Rahmi, Köker, Latife, Akçaalan, Reyhan, Albay, Meriç, Alp, Mehmet Tahir, Özkan, Korhan, Sevindik, Tuğba Ongun, Tunca, Hatice, Önem, Burçin, Richardson, Jessica, Morais, João, Christoffersen, Kirsten Seestern, Edwards, Christine, Bergkemper, Victoria, O'Leary, Sarah, Beirne, Eilish, Cromie, Hannah, Ibelings, Bastiaan W., Warming, Trine Perlt, Feldmann, Tõnu, Laas, Alo, Vale, Micaela, Panksep, Kristel, Tuvikene, Lea, Kangro, Kersti, Häggqvist, Kerstin, Salmi, Pauliina, Arvola, Lauri, Fastner, Jutta, Straile, Dietmar, Rothhaupt, Karl-Otto, Fonvielle, Jeremy, Raposeiro, Pedro M., Grossart, Hans-Peter, Avagianos, Christos, Kaloudis, Triantafyllos, Triantis, Theodoros, Zervou, Sevasti-Kiriaki, Hiskia, Anastasia, Gkelis, Spyros, Panou, Manthos, McCarthy, Valerie, Perello, Victor C., Gonçalves, Vítor Manuel da Costa, Obertegger, Ulrike, Boscaini, Adriano, Flaim, Giovanna, Salmaso, Nico, Cerasino, Leonardo, Koreivienė, Judita, Karosienė, Jūratė, Kasperovičienė, Jūratė, Savadova, Ksenija, Vitonytė, Irma, Aleksovski, Boris, Haande, Sigrid, Skjelbred, Birger, Grabowska, Magdalena, Karpowicz, Maciej, Chmura, Damian, Nawrocka, Lidia, Kobos, Justyna, Mazur-Marzec, Hanna, Alcaraz-Párraga, Pablo, Wilk-Woźniak, Elżbieta, Krstić, Svetislav, Krztoń, Wojciech, Walusiak, Edward, Gagala, Ilona, Mankiewicz-Boczek, Joana, Toporowska, Magdalena, Pawlik-Skowronska, Barbara, Niedźwiecki, Michał, Pęczuła, Wojciech, Napiórkowska-Krzebietke, Agnieszka, Dunalska, Julita, Nemova, Hana, Sieńska, Justyna, Szymański, Daniel, Kruk, Marek, Budzyńska, Agnieszka, Goldyn, Ryszard, Kozak, Anna, Rosińska, Joanna, Szeląg-Wasielewska, Elżbieta, Domek, Piotr, Jakubowska-Krepska, Natalia, Drastichova, Iveta, Kwasizur, Kinga, Messyasz, Beata, Pełechata, Aleksandra, Pełechaty, Mariusz, Kokocinski, Mikolaj, Madrecka, Beata, Kostrzewska-Szlakowska, Iwona, Frąk, Magdalena, Bańkowska-Sobczak, Agnieszka, Wasilewicz, Michał, Chomova, Lucia, Ochocka, Agnieszka, Pasztaleniec, Agnieszka, Jasser, Iwona, Geraldes, Ana Maria, Leira, Manel, Hernández, Armand, Pfeiffer, Tanja Žuna, Remec-Rekar, Spela, Elersek, Tina, Delgado-Martín, Jordi, García, David, Cereijo, Jose Luís, Gomà, Joan, Trapote, Mari Carmen, Vegas-Vilarrúbia, Teresa, Obrador, Biel, García-Murcia, Ana, Vucelić, Itana Bokan, Real, Monserrat, Romans, Elvira, Noguero-Ribes, Jordi, Duque, David Parreño, Fernández-Morán, Elísabeth, Úbeda, Bárbara, Gálvez, José Ángel, Marcé, Rafael, Catalán, Núria, Pérez-Martínez, Carmen, Žutinić, Petar, Ramos-Rodríguez, Eloísa, Cillero-Castro, Carmen, Moreno-Ostos, Enrique, Blanco, José María, Rodríguez, Valeriano, Montes-Pérez, Jorge Juan, Palomino, Roberto L., Rodríguez-Pérez, Estela, Carballeira, Rafael, Camacho, Antonio, Udovič, Marija Gligora, Picazo, Antonio, Rochera, Carlos, Santamans, Anna C., Ferriol, Carmen, Romo, Susana, Soria, Juan Miguel, Hansson, Lars-Anders, Urrutia-Cordero, Pablo, Özen, Arda, Bravo, Andrea G., Plenković-Moraj, Anđelka, Buck, Moritz, Colom-Montero, William, Mustonen, Kristiina, Pierson, Don, Yang, Yang, Verspagen, Jolanda M.H., Domis, Lisette N. de Senerpont, Seelen, Laura, Teurlincx, Sven, Verstijnen, Yvon, Tsiarta, Nikoletta, Lürling, Miquel, Maliaka, Valentini, Faassen, Elisabeth J., Latour, Delphine, Carey, Cayelan C., Paerl, Hans W., Torokne, Andrea, Karan, Tünay, Demir, Nilsun, Beklioğlu, Meryem, Bláha, Luděk, Filiz, Nur, Levi, Eti E., Iskin, Uğur, Bezirci, Gizem, Tavşanoğlu, Ülkü Nihan, Çelik, Kemal, Özhan, Koray, Karakaya, Nusret, Koçer, Mehmet Ali Turan, Yilmaz, Mete, Geriš, Rodan, Maraşlıoğlu, Faruk, and Institute of Agricultural and Environmental Sciences

Subjects
Europe, ddc:570, Settore BIO/07 - ECOLOGIA, datasets, lakes, articles, Phytoplankton pigments, Institut für Biochemie und Biologie, Dataset
Abstract

Under ongoing climate change and increasing anthropogenic activity, which continuously challenge ecosystem resilience, an in-depth understanding of ecological processes is urgently needed. Lakes, as providers of numerous ecosystem services, face multiple stressors that threaten their functioning. Harmful cyanobacterial blooms are a persistent problem resulting from nutrient pollution and climate-change induced stressors, like poor transparency, increased water temperature and enhanced stratification. Consistency in data collection and analysis methods is necessary to achieve fully comparable datasets and for statistical validity, avoiding issues linked to disparate data sources. The European Multi Lake Survey (EMLS) in summer 2015 was an initiative among scientists from 27 countries to collect and analyse lake physical, chemical and biological variables in a fully standardized manner. This database includes in-situ lake variables along with nutrient, pigment and cyanotoxin data of 369 lakes in Europe, which were centrally analysed in dedicated laboratories. Publishing the EMLS methods and dataset might inspire similar initiatives to study across large geographic areas that will contribute to better understanding lake responses in a changing environment. The authors acknowledge COST Action ES 1105 “CYANOCOST – Cyanobacterial blooms and toxins in water resources: Occurrence impacts and management” and COST Action ES 1201 “NETLAKE – Networking Lake Observatories in Europe” for contributing to this study through networking and knowledge sharing with European experts in the field. Evanthia Mantzouki was supported by a grant from the Swiss State Secretariat for Education, Research and Innovation (SERI) to Bas Ibelings and by supplementary funding from University of Geneva. We thank Wendy Beekman for the nutrient analysis and the University of Wageningen for covering the costs of this analysis from the personal funding of dr. Miquel Lürling. We thank Pieter Slot for assisting with the pigment analysis and the University of Amsterdam for covering the costs of the analysis through funding from the group of Prof. Jef Huisman and dr. Petra Visser (IBED). We would like to thank the Environmental Data Initiative for covering the cost of archiving the EMLS dataset. We would like to thank the Leibniz Institute of Freshwater Ecology and Inland Fisheries, Dept. of Experimental Limnology and the Aquatic Microbial Ecology Group for logistic and technical support of J. Fonvielle and H.-P. Grossart; and the Leibniz Association for financial support. The collection of data for Lough Erne and Lough Neagh were funded by the Department of Agriculture, Environment and Rural Affairs, Northern Ireland. The authors acknowledge COST Action ES 1105 “CYANOCOST – Cyanobacterial blooms and toxins in water resources: Occurrence impacts and management” and COST Action ES 1201 “NETLAKE – Networking Lake Observatories in Europe” for contributing to this study through networking and knowledge sharing with European experts in the field. Evanthia Mantzouki was supported by a grant from the Swiss State Secretariat for Education, Research and Innovation (SERI) to Bas Ibelings and by supplementary funding from University of Geneva. We thank Wendy Beekman for the nutrient analysis and the University of Wageningen for covering the costs of this analysis from the personal funding of dr. Miquel Lürling. We thank Pieter Slot for assisting with the pigment analysis and the University of Amsterdam for covering the costs of the analysis through funding from the group of Prof. Jef Huisman and dr. Petra Visser (IBED). We would like to thank the Environmental Data Initiative for covering the cost of archiving the EMLS dataset. We would like to thank the Leibniz Institute of Freshwater Ecology and Inland Fisheries, Dept. of Experimental Limnology and the Aquatic Microbial Ecology Group for logistic and technical support of J. Fonvielle and H.-P. Grossart; and the Leibniz Association for financial support. The collection of data for Lough Erne and Lough Neagh were funded by the Department of Agriculture, Environment and Rural Affairs, Northern Ireland.

Published
2018

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