Percorrer por autor "Carey, Cayelan C."
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- Data descriptor: a European multi lake urvey dataset of environmental variables, phytoplankton pigments and cyanotoxinsPublication . Mantzouki, Evanthia; Campbell, James; Loon, Emiel van; Visser, Petra; Konstantinou, Iosif; Antoniou, Maria G.; Giuliani, Grégory; Machado-Vieira, Danielle; Oliveira, Alinne Gurjão; Maronić, Dubravka Špoljarić; Stević, Filip; Real, Monserrat; Latour, Delphine; Çınar, Şakir; Romans, Elvira; Noguero-Ribes, Jordi; Duque, David Parreño; Fernández-Morán, Elísabeth; Úbeda, Bárbara; Gálvez, José Ángel; Soria, Juan Miguel; Fonvielle, Jeremy; Marcé, Rafael; Catalán, Núria; Pérez-Martínez, Carmen; Carey, Cayelan C.; Žutinić, Petar; Çapkın, Kadir; Ramos‐Rodríguez, Eloísa; Cillero-Castro, Carmen; Moreno-Ostos, Enrique; Blanco, José María; Rosińska, Joanna; Torokne, Andrea; Rodríguez, Valeriano; Montes-Pérez, Jorge Juan; Palomino, Roberto L.; Rodríguez-Pérez, Estela; Paerl, Hans W.; Carballeira, Rafael; Vitonytė, Irma; Hansson, Lars-Anders; Urrutia-Cordero, Pablo; Raposeiro, Pedro M.; Özen, Arda; Cesur, Mehmet; Bravo, Andrea G.; Plenković-Moraj, Anđelka; Buck, Moritz; Colom-Montero, William; Mustonen, Kristiina; Pierson, Don; Aleksovski, Boris; Bulut, Cafer; Grossart, Hans-Peter; Yang, Yang; Verspagen, Jolanda M.H.; Domis, Lisette N. de Senerpont; Seelen, Laura; Bilgin, Fuat; Teurlincx, Sven; Szymański, Daniel; Karan, Tünay; Demir, Nilsun; Haande, Sigrid; Avagianos, Christos; Beklioğlu, Meryem; Bláha, Luděk; Filiz, Nur; Levi, Eti E.; Iskin, Uğur; Bezirci, Gizem; Tavşanoğlu, Ülkü Nihan; Çelik, Kemal; Kruk, Marek; Fránková, Markéta; Kaloudis, Triantafyllos; Skjelbred, Birger; Özhan, Koray; Karakaya, Nusret; Koçer, Mehmet Ali Turan; Yilmaz, Mete; Geriš, Rodan; Maraşlıoğlu, Faruk; Vasconcelos, Vítor; Uysal, Rahmi; Köker, Latife; Triantis, Theodoros; Budzyńska, Agnieszka; Grabowska, Magdalena; Akçaalan, Reyhan; Albay, Meriç; Alp, Mehmet Tahir; Özkan, Korhan; Sevindik, Tuğba Ongun; Tunca, Hatice; Önem, Burçin; Richardson, Jessica; Zervou, Sevasti-Kiriaki; Morais, João; Christoffersen, Kirsten Seestern; Karpowicz, Maciej; Goldyn, Ryszard; Edwards, Christine; Bergkemper, Victoria; O'Leary, Sarah; Beirne, Eilish; Cromie, Hannah; Ibelings, Bastiaan W.; Hiskia, Anastasia; Warming, Trine Perlt; Feldmann, Tõnu; Laas, Alo; Chmura, Damian; Vale, Micaela; Kozak, Anna; Panksep, Kristel; Tuvikene, Lea; Kangro, Kersti; Häggqvist, Kerstin; Kobos, Justyna; Salmi, Pauliina; Arvola, Lauri; Fastner, Jutta; Straile, Dietmar; Nawrocka, Lidia; Rothhaupt, Karl-Otto; Camacho, Antonio; Gkelis, Spyros; Panou, Manthos; McCarthy, Valerie; Szeląg-Wasielewska, Elżbieta; Perello, Victor C.; Gonçalves, Vítor Manuel da Costa; Obertegger, Ulrike; Boscaini, Adriano; Flaim, Giovanna; Salmaso, Nico; Yağcı, Abdulkadir; Jakubowska-Krepska, Natalia; Cerasino, Leonardo; Koreivienė, Judita; Karosienė, Jūratė; Kasperovičienė, Jūratė; Domek, Piotr; Savadova‐Ratkus, Ksenija; Verstijnen, Yvon; Mazur-Marzec, Hanna; Alcaraz-Párraga, Pablo; Udovič, Marija Gligora; Wilk-Woźniak, Elżbieta; Krstić, Svetislav; Krztoń, Wojciech; Walusiak, Edward; Gagala‐Borowska, Ilona; Mankiewicz-Boczek, Joana; Toporowska, Magdalena; Pawlik-Skowronska, Barbara; Tsiarta, Nikoletta; Drastichova, Iveta; Picazo, Antonio; Niedźwiecki, Michał; Pęczuła, Wojciech; Napiórkowska-Krzebietke, Agnieszka; Dunalska, Julita; Nemova, Hana; Sieńska, Justyna; Fakioglu, Özden; Kwasizur, Kinga; Messyasz, Beata; Lürling, Miquel; Rochera, Carlos; Pełechata, Aleksandra; Pełechaty, Mariusz; Kokocinski, Mikolaj; Madrecka‐Witkowska, Beata; Kostrzewska-Szlakowska, Iwona; Frąk, Magdalena; Bańkowska-Sobczak, Agnieszka; Wasilewicz, Michał; Soylu, Elif Neyran; Chomova, Lucia; Santamans, Anna C.; Maliaka, Valentini; Ochocka, Agnieszka; Pasztaleniec, Agnieszka; Jasser, Iwona; Geraldes, Ana Maria; Leira, Manel; Hernández, Armand; Pfeiffer, Tanja Žuna; Remec-Rekar, Spela; Elersek, Tina; Ferriol, Carmen; Yağcı, Meral Apaydın; Faassen, Elisabeth J.; Delgado-Martín, Jordi; García, David; Cereijo, Jose Luís; Gomà, Joan; Trapote, Mari Carmen; Vegas-Vilarrúbia, Teresa; Obrador, Biel; García-Murcia, Ana; Romo, Susana; Vucelić, Itana BokanUnder 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.
- Environmental Drivers of Nightversus Day Zooplankton Populationestimates In Lakes Around the WorldPublication . Goldfarb, Sadye K.; Doubek, Jonathan; Geraldes, Ana Maria; Armengol, Xavier; Avilés-Vargas, Lidia; Bartrons, Mireia; Bartrons, Mireia; Kankılıç, Gökben Başaran; Berger, Stella; Bess, Zach; Brentrup, Jannifer; Brucet, Sandra; Bruesewitz, Denise; Calderó-Pascual, Maria; Carey, Cayelan C.; Chandra, Sudeep; Chapina, Rosaura; Eyto, Elvira de; Erdoğan, Şeyda; Erina, Oxana; Figary, Stephanie; Gerrish, Gretchen; Glass, Lucas; Brett, Johnson; Kainz, Martin; Kalingali, Anthony; Khan, Samiullah; Kimirei, Ismael; Leoni, Barbara; Lepori, Fabio; McCarthy, Valerie; Nava, Veronica; Nejstgaard, Jens; Ogorelec, Ziga; O'Reilly, Catherine; Pate, William; Paterson, Michael; Pinheiro-Silva, Lorena; Qiu, Qianlinglin; Richardson, David; Rusak, James A.; Silver, Douglas; Straile, Dietmar; Suenaga, Erin; Tartarotti, Barbara; Tavşanoğlu, Ülkü Nihan; Tereshina, Maria; Umaña-Villalobos, Gerardo; Walles, Tim; Wander, Heather; Wurtsbaugh, Wayne; Xu, Yaoyang; Zhikharev, Vyacheslav; Stockwell, JasonZooplankton play vital roles in aquatic food webs by grazingon phytoplankton, which affects water quality, andtransferring energy to higher trophic levels. In freshwaterlakes, zooplankton commonly exhibit diel vertical andhorizontal migration. During the day, zooplankton descendto deeper waters, or seek refuge in littoral areas or thesediment-water interface, to avoid visual predators, andthen migrate to open water at night to feed. Consequently,zooplankton may exhibit higher density and biomass atnight versus the day, and estimates and perceptions ofzooplankton dynamics can change with the time of daysampling occurs. To better understand these dielzooplankton differences and their environmental drivers, weconducted a standardized global campaign to samplecrustacean zooplankton in the full water column at day andnight in the pelagic zone of 40 lakes. The lakes spanned agradient in trophic state, size, and other variables such asdissolved oxygen (DO). Mesotrophic and eutrophic lakesexhibited greater zooplankton biomass at night versus daywhile oligotrophic lakes did not. Crustacean zooplanktonhad higher biomass at night versus day in lakes at lowerelevation, with higher chlorophyll a concentration, and lowerhypolimnetic DO levels. Lake area and depth were notrelated to diel zooplankton density or biomass. We provideone of the first global, standardized studies onenvironmental drivers of day versus night zooplanktonpopulation estimates. This study has importantramifications for our understanding of zooplankton ecologyand for sampling regimens.
- Global-scale compilation of freshwater zooplankton: tiny sentinels of environmental changesPublication . Figary, Stephanie; Meyer, Michael; Pilla, Rachel; Warren Currie; Aborigho, Adebukola Abiodun; Alcocer, Javier; Alfonso, María B.; Anneville, Orlane; Geraldes, Ana Maria; Balkić, Anita Galir; Ban, Syuhei; Banerjee, Arnab; Berger, Stella; Bernát, Gábor; Beyer, Jessica; Bhattacharya, Ruchi; Blank, Kätlin; Bruel, Rosalie; Burnet, Sarah; Butts, Tyler; Carey, Cayelan C.; Caroni, Rossana; Chakrabarty, Moitreyee; Chen, Huihuang; Christoffersen, Kirsten Seestern; Cortés, Alicia; Crispim, Maria Cristina; Eyto, Elvira de; Cardoso, L.; Deemer, Bridget; DeGasperi, Curtis; DeMattei, Braden; Descy, Jean-Pierre; Dimante-Deimantovica, Inta; Diovisalvi, Nadia; Dondajewska-Pielka, Renata; Doubek, Jonathan; Dražina, Tvrtko; Dulic, Zorka; Dur, Gaël; Edwards, Christine; Ejsmont-Karabin, Jolanta; Ersoy, Zeynep; Fernández, Rocío; Feuchtmayr, Heidrun; Fontanarrosa, María Soledad; Tóth, László G; Gaiser, Evelyn; Gideon, Gal; Garcia de Souza, Javier R.; Ger, Kemal Ali; Scott, Girdner; Gołdyn, Ryszard; Grossart, Hans-Peter; Hambright, K. David; Hansson, Lars-Anders; Hendricks, Susan; Jacquet, Stéphan; Kainz, Martin; Karpowicz, Maciej; Khan, Sami; Kowalczewska-Madura, Katarzyna; Kuczyńska-Kippen, Natalia; Lepori, Fabio; Lin, Shuqi; Manca, Marina; Matsuzaki, Shin-Ichiro; McElarney, Yvonne; Menezes, Rosemberg; Michaloudi, Evangelia; Moe, Jannicke; Molina, Florencia Rojas; Mueller-Navarra, Doerthe; Muñoz-Colmenares, Manuel; Nejstgaard, Jens; Obertegger, Ulrike; Ortiz, David; Oseguera, Luis A.; Paterson, Michael; Piccolo, María Cintia; Pinheiro-Silva, Lorena; Piscia, Roberta; Pomati, Francesco;; Reid, Brian; Rose, Kevin; Rosińska, Joanna; Rudstam, Lars; Rusak, James A.; Rusanovskaya, Olga O.; Salmaso, Nico; Sarvala, Jouko; Schladow, S. Geoffrey; Schmidt, Anna; Scofield, Anne; Scordo, Facundo; Seda, Jaromír; Senft, Katie; Shimaraeva, S.V; Silow, Eugene; Špoljar, Maria; Straile, Dietmar; Stockwel, Jason; Swain, Hilary; Symons, Celia C.; Tanentzap, Andrew; Tartarotti, Barbara; Thackeray, Stephen; Timofeyev, Maxim; Verburg, Piet; Wade, John; Wander , Heather L; Watkins, James; White, David; Wollrab, Sabine; Yang, Jing; Zagarese, Horacio; Zagars, Matiss; Znachor, PetrZooplankton communities are the primary conduit of energy from phytoplankton to planktivorous fish in freshwater ecosystems and play key roles in the functioning of these systems. Therefore, they are often proposed as ecological indicators. However, most zooplankton research focuses on a single waterbody or region, and insights from such studies may not be transferable to other waterbodies. To address this knowledge gap, the Zooplankton as Indicators Group (ZIG) of the Global Lake Ecological Observatory Network (GLEON) assembled a zooplankton dataset that also includes physical and chemical lake characteristics. The dataset has a broad spatial and temporal coverage with data from over 290 waterbodies. Each waterbody includes 1 to 60 years of data, with >70% sampled at least monthly during the growing season (>31,000 sampling events represented). We are exploring the environmental drivers of zooplankton community composition and assessing zooplankton as ecological indicators using this new dataset. Further, we are investigating whether relationships between zooplankton metrics and environmental drivers differ among lake characteristics (e.g., deep vs shallow) or regions, including systems such as the Laurentian Great Lakes, mountain lakes, and tropical lakes. Understanding the linkages between zooplankton communities and environmental drivers is essential to forecasting the future state of freshwaters in a changing world and we expect the dataset to have extensive and versatile applications in examining zooplankton dynamics and ecosystem responses to environmental shifts.
- Stratification strength and light climate explain variation in chlorophyll a at the continental scale in a European multilake survey in a heatwave summerPublication . Donis, Daphne; Mantzouki, Evanthia; McGinnis, Daniel F.; Vachon, Dominic; Gallego, Irene; Grossart, Hans-Peter; Senerpont Domis, Lisette N.; Teurlincx, Sven; Seelen, Laura; Lürling, Miquel; Verstijnen, Yvon; Fernández-Morán, Elísabeth; Camacho, Antonio; Úbeda, Bárbara; Çapkın, Kadir; Tuvikene, Lea; Salmi, Pauliina; Önem, Burçin; Paerl, Hans W.; Carey, Cayelan C.; Plenković-Moraj, Anđelka; Obertegger, Ulrike; Domek, Piotr; Jakubowska-Krepska, Natalia; Ibelings, Bastiaan W.; Laas, Alo; Pełechaty, Mariusz; Machado-Vieira, Danielle; Kangro, Kersti; Panksep, Kristel; Koreivienė, Judita; Wilk‐Woźniak, Elżbieta; Walusiak, Edward; Vasconcelos, Vítor; Morais, João; Bláha, Luděk; Rothhaupt, Karl-Otto; Krstić, Svetislav; Geriš, Rodan; Gkelis, Spyros; Avagianos, Christos; Panou, Manthos; Goldyn, Ryszard; Boscaini, Adriano; Rosińska, Joanna; Niedźwiecki, Michał; Szeląg-Wasielewska, Elżbieta; Karosienė, Jūratė; Haande, Sigrid; Colom‐Montero, William; Kasperovičienė, Jūratė; Karpowicz, Maciej; Skjelbred, Birger; Chmura, Damian; Ochocka, Agnieszka; Pasztaleniec, Agnieszka; Krztoń, Wojciech; Geraldes, Ana Maria; Pełechata, Aleksandra; Leira, Manel; Triantis, Theodoros; Toporowska, Magdalena; Trapote, Mari Carmen; Zervou, Sevasti‐Kiriaki; Napiórkowska-Krzebietke, Agnieszka; García‐Murcia, Ana; Pawlik-Skowronska, Barbara; Dunalska, Julita; Oliveira, Alinne Gurjão; Christoffersen, Kirsten Seestern; Kozak, Anna; Hiskia, Anastasia; Aleksovski, Boris; Nawrocka, Lidia; Kobos, Justyna; Kwasizur, Kinga; Catalán, Núria; Pérez‐Martínez, Carmen; Mazur-Marzec, Hanna; Kokocinski, Mikolaj; Moreno-Ostos, Enrique; Messyasz, Beata; Madrecka‐Witkowska, Beata; Fránková, Markéta; Häggqvist, Kerstin; Jasser, Iwona; Alcaraz-Párraga, Pablo; Chomova, Lucia; Buck, Moritz; Sieńska, Justyna; Szymański, Daniel; Vale, Micaela; Picazo, Antonio; Rochera, Carlos; Kruk, Marek; Nemova, Hana; Romo, Susana; Raposeiro, Pedro M.; Remec-Rekar, Spela; Drastichova, Iveta; Savadova‐Ratkus, Ksenija; Flaim, Giovanna; Vitonytė, Irma; Budzyńska, Agnieszka; Yang, Yang; Gomà, Joan; Kostrzewska-Szlakowska, Iwona; Frąk, Magdalena; Bańkowska-Sobczak, Agnieszka; Elersek, Tina; Tavşanoğlu, Ülkü Nihan; Çelik, Kemal; Wasilewicz, Michał; Mustonen, Kristiina; Yilmaz, Mete; Gonçalves, Vítor Manuel da Costa; Richardson, Jessica; Pierson, Don; Edwards, Christine; Hernández, Armand; Uysal, Rahmi; Latife, Köker; Hansson, Lars-Anders; Vegas‐Vilarrúbia, Teresa; Özkan, Korhan; Urrutia-Cordero, Pablo; Real, Monserrat; Obrador, Biel; Romans, Elvira; Levi, Eti E.; Bezirci, Gizem; Antoniou, Maria G.; Tsiarta, Nikoletta; Cromie, Hannah; Ramos‐Rodríguez, Eloísa; Stević, Filip; Delgado-Martín, Jordi; Blanco, José María; Cillero-Castro, Carmen; Rodríguez, Valeriano; Yağcı, Abdulkadir; Carballeira, Rafael; Bilgin, Fuat; Koçer, Mehmet Ali Turan; Bulut, Cafer; Noguero-Ribes, Jordi; Santamans, Anna C.; Feldmann, Tõnu; Duque, David Parreño; Soria, Juan Miguel; Ferriol, Carmen; Özen, Arda; Maliaka, Valentini; Fonvielle, Jeremy; Iskin, Uğur; Verspagen, Jolanda; Alp, Mehmet Tahir; Herk, Maria; Montes-Pérez, Jorge Juan; Ozhan, Koray; Arvola, Lauri; Palomino, Roberto L.; Maraşlıoğlu, Faruk; Kaloudis, Triantafyllos; Karakaya, Nusret; Fakioglu, Özden; Bravo, Andrea G.; Cereijo, Jose Luís; Cesur, Mehmet; Rodríguez‐Pérez, Estela; Maronić, Dubravka Špoljarić; Karan, Tünay; Demir, Nilsun; Akçaalan, Reyhan; Salmaso, Nico; Cerasino, Leonardo; Beklioğlu, Meryem; Sevindik, Tuğba Ongun; Grabowska, Magdalena; Albay, Meriç; Tunca, Hatice; García, David; Gálvez, José Ángel; Visser, Petra M.; Filiz, Nur; Žutinić, Petar; Warming, Trine Perlt; Soylu, Elif Neyran; Yağcı, Meral Apaydın; McCarthy, Valerie; Gagala‐Borowska, Ilona; Mankiewicz-Boczek, Joana; Çınar, Şakir; Pfeiffer, Tanja Žuna; Pęczuła, Wojciech; Perello, Victor C.; Udovič, Marija Gligora; Vucelić, Itana BokanTo 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.
- Temperature effects explain continental scale distribution of cyanobacterial toxinsPublication . Mantzouki, Evanthia; Lürling, Miquel; Fastner, Jutta; Domis, Lisette N. de Senerpont; Wilk-Woźniak, Elżbieta; Koreivienė, Judita; Seelen, Laura; Teurlincx, Sven; Verstijnen, Yvon; Krztoń, Wojciech; Walusiak, Edward; Szeląg-Wasielewska, Elżbieta; Beklioğlu, Meryem; Rothhaupt, Karl-Otto; Panou, Manthos; Straile, Dietmar; Domek, Piotr; Jakubowska-Krepska, Natalia; Kwasizur, Kinga; Messyasz, Beata; Noguero-Ribes, Jordi; Triantis, Theodoros; Stević, Filip; Pełechata, Aleksandra; Pełechaty, Mariusz; Filiz, Nur; Soylu, Elif Neyran; Levi, Eti E.; Drastichova, Iveta; Duque, David Parreño; Fernández-Morán, Elísabeth; Karakaya, Nusret; Salmi, Pauliina; Avagianos, Christos; Pfeiffer, Tanja Žuna; Kaloudis, Triantafyllos; Vucelić, Itana Bokan; Iskin, Uğur; Bezirci, Gizem; Tavşanoğlu, Ülkü Nihan; Obrador, Biel; Pierson, Don; Özhan, Koray; Budzyńska, Agnieszka; Yang, Yang; Trapote, Mari Carmen; Çelik, Kemal; Yilmaz, Mete; Marcé, Rafael; Mazur-Marzec, Hanna; Tuvikene, Lea; Catalán, Núria; Rochera, Carlos; Gagala‐Borowska, Ilona; Vegas-Vilarrúbia, Teresa; Christoffersen, Kirsten Seestern; Raposeiro, Pedro M.; Gonçalves, Vítor Manuel da Costa; Antoniou, Maria G.; Moreno-Ostos, Enrique; Boscaini, Adriano; Tsiarta, Nikoletta; Plenković-Moraj, Anđelka; Flaim, Giovanna; Kobos, Justyna; Cillero-Castro, Carmen; Niedźwiecki, Michał; Mankiewicz-Boczek, Joana; Yağcı, Meral Apaydın; Çınar, Şakir; Romo, Susana; Geraldes, Ana Maria; Çapkın, Kadir; Vitonytė, Irma; Vasconcelos, Vítor; Hernández, Armand; Zervou, Sevasti-Kiriaki; Leira, Manel; Camacho, Antonio; Salmaso, Nico; Cerasino, Leonardo; Richardson, Jessica; Wasilewicz, Michał; Urrutia-Cordero, Pablo; Visser, Petra M.; Warming, Trine Perlt; Bláha, Luděk; Hiskia, Anastasia; Ferriol, Carmen; Chomova, Lucia; Santamans, Anna C.; Jasser, Iwona; Morais, João; Vale, Micaela; Köker, Latife; Goldyn, Ryszard; Akçaalan, Reyhan; Albay, Meriç; Haande, Sigrid; Pęczuła, Wojciech; Geriš, Rodan; Edwards, Christine; Bańkowska-Sobczak, Agnieszka; Nawrocka, Lidia; Frąk, Magdalena; Karosienė, Jūratė; Fránková, Markéta; Koçer, Mehmet Ali Turan; Alp, Mehmet Tahir; Skjelbred, Birger; Žutinić, Petar; Remec-Rekar, Spela; Elersek, Tina; Sevindik, Tuğba Ongun; Picazo, Antonio; Tunca, Hatice; Kokocinski, Mikolaj; Kasperovičienė, Jūratė; Madrecka‐Witkowska, Beata; Nemova, Hana; Machado-Vieira, Danielle; Udovič, Marija Gligora; Oliveira, Alinne Gurjão; Häggqvist, Kerstin; Önem, Burçin; Aleksovski, Boris; Krstić, Svetislav; Fakioglu, Özden; Grabowska, Magdalena; Savadova‐Ratkus, Ksenija; Karpowicz, Maciej; Gkelis, Spyros; Delgado-Martín, Jordi; García, David; Cereijo, Jose Luís; Mustonen, Kristiina; Pérez-Martínez, Carmen; Gomà, Joan; Bilgin, Fuat; Ramos‐Rodríguez, Eloísa; Bravo, Andrea G.; Chmura, Damian; Úbeda, Bárbara; Gálvez, José Ángel; Panksep, Kristel; Blanco, José María; Özen, Arda; Maraşlıoğlu, Faruk; Rodríguez, Valeriano; Colom-Montero, William; McCarthy, Valerie; Arvola, Lauri; Alcaraz-Párraga, Pablo; Toporowska, Magdalena; Obertegger, Ulrike; Soria, Juan Miguel; Pawlik-Skowronska, Barbara; Fonvielle, Jeremy; Dunalska, Julita; Laas, Alo; Feldmann, Tõnu; Yağcı, Abdulkadir; Montes-Pérez, Jorge Juan; Palomino, Roberto L.; Rodríguez-Pérez, Estela; Pasztaleniec, Agnieszka; Özkan, Korhan; Carballeira, Rafael; Buck, Moritz; Maliaka, Valentini; Uysal, Rahmi; García-Murcia, Ana; Bulut, Cafer; Verspagen, Jolanda M.H.; Sieńska, Justyna; Szymański, Daniel; Kruk, Marek; Hansson, Lars-Anders; Kozak, Anna; Kostrzewska-Szlakowska, Iwona; Perello, Victor C.; Rosińska, Joanna; Real, Monserrat; Ochocka, Agnieszka; Demir, Nilsun; Napiórkowska-Krzebietke, Agnieszka; Maronić, Dubravka Špoljarić; Kangro, Kersti; Grossart, Hans-Peter; Paerl, Hans W.; Karan, Tünay; Carey, Cayelan C.; Ibelings, Bastiaan W.; Romans, Elvira; Cesur, MehmetInsight 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.
- The effects of hypoxia on zooplankton population estimates and migration in lakesPublication . Goldfarb, Sadye K.; Doubek, Jonathan; Geraldes, Ana Maria; Bartrons, Mireia; Berger, Stella; Brentrup, Jannifer; Brucet, Sandra; Burnet, Sarah; Caputo Galarce, Luciano; Carey, Cayelan C.; Christoffersen, Kirsten Seestern; Eyto, Elvira de; Dur, Gaël; Erdoğan, Şeyda; Erina, Oxana; Grossart, Hans-Peter; Kainz, Martin; Kankılıç, Gökben Başaran; Khan, Sami; Leoni, Barbara; Lepori, Fabio; McCarthy, Valerie; Nava, Veronica; Nejstgaard, Jens; Obertegger, Ulrike; Ogorelec, Ziga; Ozen, Arda; Pascual, Maria; Paterson, Michael; Patelli, Martina; Qiu, Qianlinglin; Richardson, David; Sepulveda-Jauregui, Armando; Silva, Lorena; Straile, Dietmar; Tartarotti, Barbara; Tavşanoğlu, Ülkü Nihan; Tereshina, Maria; Umaña-Villalobos, Gerardo; Walles, Tim; Wander, Heather; Wurtsbaugh, Wayne; Stockwell, JasonMany zooplankton species typically exhibit diel vertical migration (DVM), where zooplankton migrate from the hypolimnion to the epilimnion of lakes at night. Zooplankton exhibit this behavior to avoid visual predators and UV radiation by remaining in the bottom waters during the day and ascending to the surface waters to feed on phytoplankton at night. However, hypoxic conditions in the hypolimnion of lakes mayinterfere with DVM and force zooplankton to increase diel horizontal migration (DHM) to find predation refuge in littoral zones. Climate change and eutrophication are expected to increase the prevalence and severity of hypoxic conditions worldwide and thereby possibly alter zooplankton migration patterns. We hypothesize that hypoxia will force zooplankton to shift their migration patterns from predominantly DVM to DHM to avoid oxygen-depleted bottom waters. To test our hypothesis, we are conducting a standardized global sampling program to test whether pelagic, full water column estimates of zooplankton are greater at night versus the day under hypolimnetic hypoxic versus oxic conditions. Participants are aiming to sample at least one lake with an oxic hypolimnion and one lake with a hypoxic hypolimnion during the thermally-stratified period at midday and midnight. With our global dataset (currently expecting about 60 lakes in 22 countries), our goal is to improve our understanding of how global change may alter zooplankton migration behavior and patterns in lakes.