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

Author

Keller, P. S., Catalán, N., von Schiller, D., Grossart, H.-P., Koschorreck, M., Obrador, B., Frassl, M. A., Karakaya, N., Barros, N., Howitt, J. A., Mendoza-Lera, C., Pastor, A., Flaim, G., Aben, R., Riis, T., Arce, M. I., Onandia, G., Paranaíba, J. R., Linkhorst, A., del Campo, R., 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, M. M., Finlayson, C. M., Melita, M., Oliveira Junior, E. S., Muniz, C. C., Gómez-Gener, L., Leigh, C., Zhang, Q., and Marcé, R.

Published
2020
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8. 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
Full Text
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9. Global CO2 emissions from dry inland waters share common drivers across ecosystems

Author

Keller, P.S., Catalan, N., Schiller, D., Grossart, H.P., Koschorreck, M., Obrador, B., Frassl, M.A., Karakaya, N., Barros, N., Howitt, J.A., Mendoza-Lera, C., Pastor, A., Flaim, G., Aben, R.C.H., Riis, T., Arce, M.I., Onandia, G., Paranaiba, J.R., Linkhorst, A., Campo, R., Amado, A.M., Cauvy-Fraunie, S., Brothers, S., Condon, J., Mendonca, R.F., Reverey, F., Room, E.I., Datry, T., Roland, F., Laas, A., Obertegger, U., Park, J.H., Wang, H, Kosten, S., Gomez, R., Feijoo, C., Elosegi, A., Sanchez-Montoya, M.M., Finlayson, C.M., Melita, M., Oliveira Junior, E.S., Muniz, C.C., Gomez-Gener, L., Leigh, C., Marce, R., Keller, P.S., Catalan, N., Schiller, D., Grossart, H.P., Koschorreck, M., Obrador, B., Frassl, M.A., Karakaya, N., Barros, N., Howitt, J.A., Mendoza-Lera, C., Pastor, A., Flaim, G., Aben, R.C.H., Riis, T., Arce, M.I., Onandia, G., Paranaiba, J.R., Linkhorst, A., Campo, R., Amado, A.M., Cauvy-Fraunie, S., Brothers, S., Condon, J., Mendonca, R.F., Reverey, F., Room, E.I., Datry, T., Roland, F., Laas, A., Obertegger, U., Park, J.H., Wang, H, Kosten, S., Gomez, R., Feijoo, C., Elosegi, A., Sanchez-Montoya, M.M., Finlayson, C.M., Melita, M., Oliveira Junior, E.S., Muniz, C.C., Gomez-Gener, L., Leigh, C., and Marce, R.

Abstract

Contains fulltext : 226569.pdf (publisher's version ) (Open Access)

Published
2020

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

Author

Biología vegetal y ecología, Landaren biologia eta ekologia, Keller, P.S., Catalán, N., Von Schiller Calle, Daniel Gaspar, Grossart, Hans Peter, Koschorreck, M., Obrador, B., Frassl, M. A., Karakaya, N., Barros, N., Howitt, J. A., Mendoza Lera, B., Pastor, Ada, Flaim, G., Aben, R., Riis, T., Arce, M. I., Onandia, G., 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, Claudia, Elosegi Irurtia, Arturo, Sánchez Montoya, María Mar, Finlayson, C. M., Melita, M., Oliveira Junior, E. S., Muniz, C. C.., Gómez Gener, L., Leigh, C., Zhang, Q., Marcé, R., Biología vegetal y ecología, Landaren biologia eta ekologia, Keller, P.S., Catalán, N., Von Schiller Calle, Daniel Gaspar, Grossart, Hans Peter, Koschorreck, M., Obrador, B., Frassl, M. A., Karakaya, N., Barros, N., Howitt, J. A., Mendoza Lera, B., Pastor, Ada, Flaim, G., Aben, R., Riis, T., Arce, M. I., Onandia, G., 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, Claudia, Elosegi Irurtia, Arturo, Sánchez Montoya, María Mar, Finlayson, C. M., Melita, M., Oliveira Junior, E. S., Muniz, C. C.., Gómez Gener, L., Leigh, C., Zhang, Q., and Marcé, R.

Abstract

[EN] 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

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

Author

Keller, P. S. Catalán, N. von Schiller, D. Grossart, H. P. Koschorreck, M. Obrador, B. Frassl, M. A. Karakaya, N. Barros, N. Howitt, J. A. Mendoza-Lera, C. Pastor, A. Flaim, G. Aben, R. Riis, T. Arce, M. I. Onandia, G. Paranaíba, J. R. Linkhorst, A. del Campo, R. 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, M. M. Finlayson, C. M. Melita, M. Oliveira Junior, E. S. Muniz, C. C. Gómez-Gener, L. Leigh, C. Zhang, Q. Marcé, R. and Keller, P. S. Catalán, N. von Schiller, D. Grossart, H. P. Koschorreck, M. Obrador, B. Frassl, M. A. Karakaya, N. Barros, N. Howitt, J. A. Mendoza-Lera, C. Pastor, A. Flaim, G. Aben, R. Riis, T. Arce, M. I. Onandia, G. Paranaíba, J. R. Linkhorst, A. del Campo, R. 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, M. M. Finlayson, C. M. Melita, M. Oliveira Junior, E. S. Muniz, C. C. Gómez-Gener, L. Leigh, C. Zhang, Q. Marcé, R.

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

Author

Keller, Philipp, Catalán, N., von Schiller, D., Grossart, H.-P., Koschorreck, Matthias, Obrador, B., Frassl, Marieke, Karakaya, N., Barros, N., Howitt, J.A., Mendoza-Lera, C., Pastor, A., Flaim, G., Aben, R., Riis, T., Arce, M.I., Onandia, G., Paranaíba, J.R., Linkhorst, A., del Campo, R., 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, M.M., Finlayson, C.M., Melita, M., Oliveira Junior, E.S., Muniz, C.C., Gómez-Gener, L., Leigh, C., Zhang, Q., Marcé, R., Keller, Philipp, Catalán, N., von Schiller, D., Grossart, H.-P., Koschorreck, Matthias, Obrador, B., Frassl, Marieke, Karakaya, N., Barros, N., Howitt, J.A., Mendoza-Lera, C., Pastor, A., Flaim, G., Aben, R., Riis, T., Arce, M.I., Onandia, G., Paranaíba, J.R., Linkhorst, A., del Campo, R., 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, M.M., Finlayson, C.M., Melita, M., Oliveira Junior, E.S., Muniz, C.C., Gómez-Gener, L., Leigh, C., Zhang, Q., and Marcé, R.

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

13. 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

16. The Effects of Hypoxia on Zooplankton Population Estimates and Migration in Lakes

Author

Goldfarb, S, Doubek, J, Antão-Geraldes, A, Bartrons, M, Berger, S, Brentrup, J, Brucet, S, Burnet, S, Caputo Galarce, L, Carey, C, Christoffersen, K, de Eyto, E, Dur, G, Erdoğan, S, Erina, O, Grossart, H, Kainz, M, Kankılıç, G, Khan, S, Leoni, B, Lepori, F, Mccarthy, V, Nava, V, Nejstgaard, J, Obertegger, U, Ogorelec, Z, Ozen, A, Pascual, M, Paterson, M, Patelli, M, Qiu, Q, Richardson, D, Sepulveda-Jauregui, A, Silva, L, Straile, D, Tartarotti, B, Tavşanoğlu, U, Tereshina, M, Umaña-Villalobos, G, Walles, T, Wander, H, Wurtsbaugh, W, Stockwell, S, Goldfarb, SK, Bartrons, M., Berger, S., Brentrup, JA, Carey, CC, Christoffersen, K., Grossart, HP, Kainz, M., Kankılıç, GB, McCarthy, V, Tavşanoğlu, UN, Wander, HL, Goldfarb, S, Doubek, J, Antão-Geraldes, A, Bartrons, M, Berger, S, Brentrup, J, Brucet, S, Burnet, S, Caputo Galarce, L, Carey, C, Christoffersen, K, de Eyto, E, Dur, G, Erdoğan, S, Erina, O, Grossart, H, Kainz, M, Kankılıç, G, Khan, S, Leoni, B, Lepori, F, Mccarthy, V, Nava, V, Nejstgaard, J, Obertegger, U, Ogorelec, Z, Ozen, A, Pascual, M, Paterson, M, Patelli, M, Qiu, Q, Richardson, D, Sepulveda-Jauregui, A, Silva, L, Straile, D, Tartarotti, B, Tavşanoğlu, U, Tereshina, M, Umaña-Villalobos, G, Walles, T, Wander, H, Wurtsbaugh, W, Stockwell, S, Goldfarb, SK, Bartrons, M., Berger, S., Brentrup, JA, Carey, CC, Christoffersen, K., Grossart, HP, Kainz, M., Kankılıç, GB, McCarthy, V, Tavşanoğlu, UN, and Wander, HL

Published
2019

19. Plankton dynamics across the freshwater, transitional and marine research sites of the LTER-Italy Network. Patterns, fluctuations, drivers

Author

Morabito, G, Mazzocchi, M, Salmaso, N, Zingone, A, Bergami, C, Flaim, G, Accoroni, S, Basset, A, Bastianini, M, Belmonte, G, Bernardi Aubry, F, Bertani, I, Bresciani, M, Buzzi, F, Cabrini, M, Camatti, E, Caroppo, C, Cataletto, B, Castellano, M, Del Negro, P, de Olazabal, A, Di Capua, I, Elia, A, Fornasaro, D, Giallain, M, Grilli, F, Leoni, B, Lipizer, M, Longobardi, L, Ludovisi, A, Lugliè, A, Manca, M, Margiotta, F, Mariani, M, Marini, M, Marzocchi, M, Obertegger, U, Oggioni, A, Padedda, B, Pansera, M, Piscia, R, Povero, P, Pulina, S, Romagnoli, T, Rosati, I, Rossetti, G, Rubino, F, Sarno, D, Satta, C, Sechi, N, Stanca, E, Tirelli, V, Totti, C, Pugnetti, A, Mazzocchi, MG, Elia, AC, Mariani, MA, Padedda, BM, Satta, CT, Morabito, G, Mazzocchi, M, Salmaso, N, Zingone, A, Bergami, C, Flaim, G, Accoroni, S, Basset, A, Bastianini, M, Belmonte, G, Bernardi Aubry, F, Bertani, I, Bresciani, M, Buzzi, F, Cabrini, M, Camatti, E, Caroppo, C, Cataletto, B, Castellano, M, Del Negro, P, de Olazabal, A, Di Capua, I, Elia, A, Fornasaro, D, Giallain, M, Grilli, F, Leoni, B, Lipizer, M, Longobardi, L, Ludovisi, A, Lugliè, A, Manca, M, Margiotta, F, Mariani, M, Marini, M, Marzocchi, M, Obertegger, U, Oggioni, A, Padedda, B, Pansera, M, Piscia, R, Povero, P, Pulina, S, Romagnoli, T, Rosati, I, Rossetti, G, Rubino, F, Sarno, D, Satta, C, Sechi, N, Stanca, E, Tirelli, V, Totti, C, Pugnetti, A, Mazzocchi, MG, Elia, AC, Mariani, MA, Padedda, BM, and Satta, CT

Abstract

A first synoptic and trans-domain overviewof plankton dynamics was conducted across the aquatic sites belonging to the Italian Long-Term Ecological Research Network (LTER-Italy). Based on published studies, checked and complemented with unpublished information, we investigated phytoplankton and zooplankton annual dynamics and long-term changes across domains: from the large subalpine lakes to mountain lakes and artificial lakes, from lagoons to marine coastal ecosystems. This study permitted identifying common and unique environmental drivers and ecological functional processes controlling seasonal and long-termtemporal course. The most relevant patterns of plankton seasonal succession were revealed, showing that the driving factors were nutrient availability, stratification regime, and freshwater inflow. Phytoplankton and mesozooplankton displayed a wide interannual variability at most sites. Unidirectional or linear long-term trends were rarely detected but all sites were impacted across the years by at least one, but in many case several major stressor(s): nutrient inputs, meteo-climatic variability at the local and regional scale, and direct human activities at specific sites. Different climatic and anthropic forcings frequently co-occurred, whereby the responses of plankton communities were the result of this environmental complexity. Overall, the LTER investigations are providing an unparalleled framework of knowledge to evaluate changes in the aquatic pelagic systems and management options

Published
2018

20. A European Multi Lake Survey dataset of environmental variables, phytoplankton pigments and cyanotoxins

Author

European Cooperation in Science and Technology, Hernández, Armand [0000-0001-7245-9863], Mantzouki, E., Campbell, James, van Loon, E., Visser, P., Konstantinou, I., Antoniou, M., Giuliani, G., Machado-Vieira, D., Gurjão de Oliveira, Alinne, Maronić, D.Š., Stević, F., Hiskia, A., Gkelis, S., Walusiak, E., Panou, M., McCarthy, V., Budzyńska, A., Perello, V.C., Kostrzewska-Szlakowska, I., Gonçalves, V., Skjelbred, B., Palomino, Roberto L., Obertegger, U., Boscaini, A., Flaim, G., Salmaso, N., Gagala, I., Cerasino, L., Mankiewicz-Boczek, J., Hansson, L. A., Grabowska, M., Karpowicz, M., Rodríguez-Pérez, E., Chmura, D., Nawrocka, L., Kozak, A., Kobos, J., Rosińska, J., Seelen, L., Toporowska, M., Pawlik-Skowronska, B., Urrutia-Cordero, Pablo, Niedźwiecki, M., Maliaka, V., Pęczuła, W., Wasilewicz, M., Napiórkowska-Krzebietke, A., Ochocka, A., Beklioğlu, M., Szeląg-Wasielewska, E., Domek, P., Teurlincx, S., Jakubowska-Krepska, N., Tavşanoğlu, ÜN., Carballeira, R., Kwasizur, K., Drastichova, I., Messyasz, B., Chomova, L., Soylu, E.N., Pasztaleniec, A., Jasser, I., Filiz, N., Antão-Geraldes, A. M., Bilgin, F., Camacho, A., Özen, A., Leira, M., Hernández, Armand, Vasconcelos, V., Remec-Rekar, S., Pfeiffer, T.Ž., Eleršek, Tina, Delgado-Martín, Jordi, Yağcı, M.A., García, D., Bezirci, G., Bláha, L., Bravo, Andrea G., Verstijnen, Y., Cereijo, J. L., Gomà, Joan, Trapote, M.C., Vegas-Vilarrúbia, Teresa, Obrador, B., García-Murcia, A., Real, M., Picazo, Antoni, Vucelić, I.B., Romans, E., Cesur, M., Çınar, Ş., Lürling, M., Levi, E., Noguero-Ribes, J., Duque, D.P., Fernández-Morán, E., Úbeda, B., Yağcı, A., Gálvez, J.Á., Marcé, Rafael, Catalán, N., Buck, Moritz, Pérez-Martínez, Carmen, Ramos-Rodríguez, E., Tsiarta, N., Žutinić, P., Iskin, U., Çapkın, K., Udovič, M.G., Cillero-Castro, C., Moreno-Ostos, Enrique, Blanco, J. M., Rodríguez, V., Plenković-Moraj, Anđelka, Montes-Pérez, J.J., Colom-Montero, W., Koreivienė, J., Rochera, C., Santamans, A. C., Ferriol, C., Romo, S., Faassen, E.J., Soria, J. M., Latour, D., Mazur-Marzec, Hanna, Mustonen, K., Pierson, D., Kasperovičienė, J., Yang, Y., Verspagen, Jolanda M. H., Çelik, K., de Senerpont Domis, L.N., Özhan, K., Dunalska, J., Carey, C.C., Paerl, Hans, Alcaraz-Párraga, P., Torokne, A., Goldyn, R., Karan, T., Bulut, C., Demir, N., Uysal, R., Pełechata, A., Karakaya, N., Koçer, M.A.T., Sieńska, J., Yilmaz, M., Bańkowska-Sobczak, A., Savadova, K., Maraşlıoğlu, F., Geriš, R., Fakioglu, Ö., Fránková, M., Morais, J., Köker, L., Bergkemper, V., Pełechaty, M., O'Leary, S., Nemova, H., Vitonytė, I., Wilk-Woźniak, E., Beirne, E., Cromie, H., Ibelings, Bas W., Christoffersen, K. S., Warming, T.P., Feldmann, T., Laas, A., Vale, M., Panksep, K., Frąk, M., Kokocinski, M., Krztoń, W., Szymański, D., Tuvikene, L., Kangro, K., Häggqvist, K., Salmi, P., Arvola, L., Fastner, J., Straile, D., Haande, S., Rothhaupt, K. O., Fonvielle, J., Krstić, S., Raposeiro, P. M., Kruk, M., Madrecka, B., Grossart, Hans-Peter, Avagianos, C., Kaloudis, T., Triantis, T., Aleksovski, B., Zervou, S. K., European Cooperation in Science and Technology, Hernández, Armand [0000-0001-7245-9863], Mantzouki, E., Campbell, James, van Loon, E., Visser, P., Konstantinou, I., Antoniou, M., Giuliani, G., Machado-Vieira, D., Gurjão de Oliveira, Alinne, Maronić, D.Š., Stević, F., Hiskia, A., Gkelis, S., Walusiak, E., Panou, M., McCarthy, V., Budzyńska, A., Perello, V.C., Kostrzewska-Szlakowska, I., Gonçalves, V., Skjelbred, B., Palomino, Roberto L., Obertegger, U., Boscaini, A., Flaim, G., Salmaso, N., Gagala, I., Cerasino, L., Mankiewicz-Boczek, J., Hansson, L. A., Grabowska, M., Karpowicz, M., Rodríguez-Pérez, E., Chmura, D., Nawrocka, L., Kozak, A., Kobos, J., Rosińska, J., Seelen, L., Toporowska, M., Pawlik-Skowronska, B., Urrutia-Cordero, Pablo, Niedźwiecki, M., Maliaka, V., Pęczuła, W., Wasilewicz, M., Napiórkowska-Krzebietke, A., Ochocka, A., Beklioğlu, M., Szeląg-Wasielewska, E., Domek, P., Teurlincx, S., Jakubowska-Krepska, N., Tavşanoğlu, ÜN., Carballeira, R., Kwasizur, K., Drastichova, I., Messyasz, B., Chomova, L., Soylu, E.N., Pasztaleniec, A., Jasser, I., Filiz, N., Antão-Geraldes, A. M., Bilgin, F., Camacho, A., Özen, A., Leira, M., Hernández, Armand, Vasconcelos, V., Remec-Rekar, S., Pfeiffer, T.Ž., Eleršek, Tina, Delgado-Martín, Jordi, Yağcı, M.A., García, D., Bezirci, G., Bláha, L., Bravo, Andrea G., Verstijnen, Y., Cereijo, J. L., Gomà, Joan, Trapote, M.C., Vegas-Vilarrúbia, Teresa, Obrador, B., García-Murcia, A., Real, M., Picazo, Antoni, Vucelić, I.B., Romans, E., Cesur, M., Çınar, Ş., Lürling, M., Levi, E., Noguero-Ribes, J., Duque, D.P., Fernández-Morán, E., Úbeda, B., Yağcı, A., Gálvez, J.Á., Marcé, Rafael, Catalán, N., Buck, Moritz, Pérez-Martínez, Carmen, Ramos-Rodríguez, E., Tsiarta, N., Žutinić, P., Iskin, U., Çapkın, K., Udovič, M.G., Cillero-Castro, C., Moreno-Ostos, Enrique, Blanco, J. M., Rodríguez, V., Plenković-Moraj, Anđelka, Montes-Pérez, J.J., Colom-Montero, W., Koreivienė, J., Rochera, C., Santamans, A. C., Ferriol, C., Romo, S., Faassen, E.J., Soria, J. M., Latour, D., Mazur-Marzec, Hanna, Mustonen, K., Pierson, D., Kasperovičienė, J., Yang, Y., Verspagen, Jolanda M. H., Çelik, K., de Senerpont Domis, L.N., Özhan, K., Dunalska, J., Carey, C.C., Paerl, Hans, Alcaraz-Párraga, P., Torokne, A., Goldyn, R., Karan, T., Bulut, C., Demir, N., Uysal, R., Pełechata, A., Karakaya, N., Koçer, M.A.T., Sieńska, J., Yilmaz, M., Bańkowska-Sobczak, A., Savadova, K., Maraşlıoğlu, F., Geriš, R., Fakioglu, Ö., Fránková, M., Morais, J., Köker, L., Bergkemper, V., Pełechaty, M., O'Leary, S., Nemova, H., Vitonytė, I., Wilk-Woźniak, E., Beirne, E., Cromie, H., Ibelings, Bas W., Christoffersen, K. S., Warming, T.P., Feldmann, T., Laas, A., Vale, M., Panksep, K., Frąk, M., Kokocinski, M., Krztoń, W., Szymański, D., Tuvikene, L., Kangro, K., Häggqvist, K., Salmi, P., Arvola, L., Fastner, J., Straile, D., Haande, S., Rothhaupt, K. O., Fonvielle, J., Krstić, S., Raposeiro, P. M., Kruk, M., Madrecka, B., Grossart, Hans-Peter, Avagianos, C., Kaloudis, T., Triantis, T., Aleksovski, B., and Zervou, S. K.

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.

Published
2018

22. Aggiornamenti su Tovel

Author

Flaim, G., Corradini, S., Biasi, A., and Obertegger, U.

Subjects
Settore BIO/07 - ECOLOGIA, Tovel, LTER Tovel
Published
2017

26. Sexual species are separated by larger genetic gaps than asexual species in rotifers

Author

Tang, CQ, Obertegger, U, Fontaneto, D, and Barraclough, TG

Subjects
Models, Genetic, Rotifera, Rata di diversificazione, Original Articles, Sequence Analysis, DNA, Biodiversity, GMYC, diversification rate, Biological Evolution, DNA, Mitochondrial, Biodiversità, Genetics, Population, species delimitation, Settore BIO/07 - ECOLOGIA, Reproduction, Asexual, Linear Models, ecological speciation, Animals, Speciazione ecologica, Phylogeny, Deliminazione di specie
Abstract

Why organisms diversify into discrete species instead of showing a continuum of genotypic and phenotypic forms is an important yet rarely studied question in speciation biology. Does species discreteness come from adaptation to fill discrete niches or from interspecific gaps generated by reproductive isolation? We investigate the importance of reproductive isolation by comparing genetic discreteness, in terms of intra- and interspecific variation, between facultatively sexual monogonont rotifers and obligately asexual bdelloid rotifers. We calculated the age (phylogenetic distance) and average pairwise genetic distance (raw distance) within and among evolutionarily significant units of diversity in six bdelloid clades and seven monogonont clades sampled for 4211 individuals in total. We find that monogonont species are more discrete than bdelloid species with respect to divergence between species but exhibit similar levels of intraspecific variation (species cohesiveness). This pattern arises because bdelloids have diversified into discrete genetic clusters at a faster net rate than monogononts. Although sampling biases or differences in ecology that are independent of sexuality might also affect these patterns, the results are consistent with the hypothesis that bdelloids diversified at a faster rate into less discrete species because their diversification does not depend on the evolution of reproductive isolation.

Published
2014

36. A georeferenced dataset of Italian occurrence records of the phylum Rotifera

Author

Vittoria Ferrari, Arianna Gualdi, Isabella Bertani, Diego Fontaneto, Lyudmila Kamburska, Karimullah Karimullah, Federico Marrone, Ulrike Obertegger, Giampaolo Rossetti, Rocco Tiberti, Tommaso Cancellario, Ferrari V., Gualdi A., Bertani I., Fontaneto D., Kamburska L., Karimullah K., Marrone F., Obertegger U., Rossetti G., Tiberti R., and Cancellario T.

Subjects
Settore BIO/05 - ZOOLOGIA, Italy, Ecology, occurrence dataset, Aquatic Science, Darwin Core, GBIF, rotifers, Water Science and Technology
Abstract

We report a dataset of known and published occurrence records of Italian taxa from species (and subspecies) to family rank of the phylum Rotifera; we considered only Bdelloidea, Monogononta, and Seisonacea, and did not include Acanthocephala. The dataset in-cludes 15,525 records (12,015 of which with georeferenced coordinates) of 584 valid species and subspecies names and other taxa at family level, gathered from 332 published papers. The published literature spans the period from 1838 to 2022, with the lowest number of papers published during the first half of the twentieth century, followed by an increasing number of papers, from 20 to more than 60 in each decade. The Italian regions with the highest number of records and species are Emilia-Romagna, Lombardy, and Piedmont, whereas no records are known for Molise. The number of species known from each region mostly mirrors sampling efforts, measured as the number of publications per region. The dataset is available through the Open Science Framework (OSF), and all the georeferenced occurrence data have been uploaded to the Global Biodiversity Information Facility (GBIF). ial use only.

Published
2023

37. The Effects of Hypoxia on Zooplankton Population Estimates and Migration in Lakes

Author

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, Jason, Goldfarb, S, Doubek, J, Antão-Geraldes, A, Bartrons, M, Berger, S, Brentrup, J, Brucet, S, Burnet, S, Caputo Galarce, L, Carey, C, Christoffersen, K, de Eyto, E, Dur, G, Erdoğan, S, Erina, O, Grossart, H, Kainz, M, Kankılıç, G, Khan, S, Leoni, B, Lepori, F, Mccarthy, V, Nava, V, Nejstgaard, J, Obertegger, U, Ogorelec, Z, Ozen, A, Pascual, M, Paterson, M, Patelli, M, Qiu, Q, Richardson, D, Sepulveda-Jauregui, A, Silva, L, Straile, D, Tartarotti, B, Tavşanoğlu, U, Tereshina, M, Umaña-Villalobos, G, Walles, T, Wander, H, Wurtsbaugh, W, and Stockwell, S

Subjects
Zooplankton population, zooplankton, hypoxia, fungi, anoxia, vertical migration, lake
Abstract

Many 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. info:eu-repo/semantics/publishedVersion

Published
2019

38. Temperature effects explain continental scale distribution of cyanobacterial toxins

Author

Sigrid Haande, Christos Avagianos, Vítor Gonçalves, Lisette N. de Senerpont Domis, Carlos Rochera, Ana García-Murcia, Kerstin Häggqvist, Reyhan Akçaalan, Jordi Noguero-Ribes, Mariusz Pełechaty, Wojciech Krztoń, Hans-Peter Grossart, Jutta Fastner, Bárbara Úbeda, Wojciech Pęczuła, Nur Filiz, Justyna Kobos, Juan M. Soria, Elif Neyran Soylu, Lars-Anders Hansson, Filip Stević, Luděk Bláha, Hanna Mazur-Marzec, Jolanda M. H. Verspagen, Burçin Önem, Karl-Otto Rothhaupt, Nico Salmaso, Abdulkadir Yağcı, David Parreño Duque, Ksenija Savadova, Nusret Karakaya, Aleksandra Pełechata, Yvon Verstijnen, Carmen Pérez-Martínez, Pauliina Salmi, Gizem Bezirci, Tuğba Ongun Sevindik, Svetislav Krstić, Rahmi Uysal, Laura Seelen, Eloísa Ramos-Rodríguez, Spela Remec-Rekar, Sven Teurlincx, Monserrat Real, Meriç Albay, Donald C. Pierson, Susana Romo, Kristiina Mustonen, Kirsten Christoffersen, Valentini Maliaka, Estela Rodríguez-Pérez, Joanna Rosińska, Nilsun Demir, Mehmet Tahir Alp, Elvira Romans, João Morais, Daniel Szymański, Danielle Machado-Vieira, Damian Chmura, Evanthia Mantzouki, Teresa Vegas-Vilarrúbia, Antonio Picazo, Mikołaj Kokociński, Anastasia Hiskia, Christine Edwards, Yang Yang, Irma Vitonytė, Mehmet Cesur, Agnieszka Bańkowska-Sobczak, Iwona Kostrzewska-Szlakowska, Nikoletta Tsiarta, Anđelka Plenković-Moraj, Miquel Lürling, Ryszard Gołdyn, Kristel Panksep, Kemal Celik, Anna Kozak, Jose Luis Cereijo, Pablo Urrutia-Cordero, Petra M. Visser, Rodan Geriš, Uğur Işkın, Leonardo Cerasino, Kadir Çapkın, Victor C. Perello, Carmen Cillero-Castro, Arda Özen, Manel Leira, Enrique Moreno-Ostos, Şakir Çinar, Agnieszka Budzyńska, Faruk Maraşlıoğlu, Pedro M. Raposeiro, Theodoros M. Triantis, Agnieszka Pasztaleniec, Sevasti-Kiriaki Zervou, Elżbieta Wilk-Woźniak, Edward Walusiak, Kersti Kangro, Jorge Juan Montes-Pérez, Triantafyllos Kaloudis, Mari Carmen Trapote, Pablo Alcaraz-Párraga, José María Blanco, Marek Kruk, Hans W. Paerl, Lidia Nawrocka, Meryem Beklioglu, Antonio Camacho, Moritz Buck, Biel Obrador, Ilona Gagala, Lauri Arvola, Elżbieta Szeląg-Wasielewska, Petar Žutinić, Giovanna Flaim, Núria Catalán, R. Carballeira, Alinne Gurjão de Oliveira, Magdalena Frąk, Alo Laas, Magdalena Grabowska, Dubravka Špoljarić Maronić, Meral Apaydın Yağcı, Itana Bokan Vucelić, Ana Maria Antão-Geraldes, Tõnu Feldmann, Natalia Jakubowska-Krepska, Trine Perlt Warming, Armand Hernández, Anna C. Santamans, Fuat Bilgin, Cayelan C. Carey, Joana Mankiewicz-Boczek, Elísabeth Fernández-Morán, Mete Yilmaz, Iwona Jasser, Boris Aleksovski, Michał Wasilewicz, Agnieszka Ochocka, David García, Lea Tuvikene, Roberto L. Palomino, B.W. Ibelings, Hatice Tunca, Birger Skjelbred, Joan Gomà, Jūratė Karosienė, Maria G. Antoniou, Vitor Vasconcelos, Mehmet Ali Turan Koçer, Eti E. Levi, Markéta Fránková, Beata Madrecka, Barbara Pawlik-Skowrońska, Jeremy Fonvielle, Korhan Özkan, Maciej Karpowicz, Özden Fakioglu, Lucia Chomova, Magdalena Toporowska, Ülkü Nihan Tavşanoğlu, Jūratė Kasperovičienė, Latife Köker, Kinga Kwasizur, Koray Ozhan, Valeriano Rodríguez, William Colom-Montero, Ulrike Obertegger, Micaela Vale, Spyros Gkelis, Michał Niedźwiecki, Tunay Karan, Piotr Domek, Judita Koreivienė, Andrea G. Bravo, Justyna Sieńska, Jessica Richardson, Hana Nemova, Cafer Bulut, Jordi Delgado-Martín, Tanja Žuna Pfeiffer, Marija Gligora Udovič, Manthos Panou, Dietmar Straile, Rafael Marcé, Valerie McCarthy, Iveta Drastichova, Agnieszka Napiórkowska-Krzebietke, J. A. Gálvez, Tina Elersek, Beata Messyasz, Adriano Boscaini, Carmen Ferriol, Julita Dunalska, Freshwater and Marine Ecology (IBED, FNWI), BAİBÜ, Mühendislik Fakültesi, Çevre Mühendisliği Bölümü, Karakaya, Nusret, Universitat de Barcelona, Fakülteler, Fen - Edebiyat Fakültesi, Biyoloji Bölümü, Soylu, Elif Neyran, European Cooperation in Science and Technology, Université de Genève, Tokat Gaziosmanpaşa Üniversitesi, Lammi Biological Station, Doctoral Programme in Atmospheric Sciences, CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental, Yılmaz, Mete, Institute of Agricultural and Environmental Sciences, Mantzouki, Evanthia, Ibelings, Bastiaan Willem, Mantzouki, E, Lurling, M, Fastner, J, Domis, LD, Wilk-Wozniak, E, Koreiviene, J, Seelen, L, Teurlincx, S, Verstijnen, Y, Krzton, W, Walusiak, E, Karosiene, J, Kasperoviciene, J, Savadova, K, Vitonyte, I, Cillero-Castro, C, Budzynska, A, Goldyn, R, Kozak, A, Rosinska, J, Szelag-Wasielewska, E, Domek, P, Jakubowska-Krepska, N, Kwasizur, K, Messyasz, B, Pelechata, A, Pelechaty, M, Kokocinski, M, Garcia-Murcia, A, Real, M, Romans, E, Noguero-Ribes, J, Duque, DP, Fernandez-Moran, E, Karakaya, N, Haggqvist, K, Demir, N, Beklioglu, M, Filiz, N, Levi, EE, Iskin, U, Bezirci, G, Tavsanoglu, UN, Ozhan, K, Gkelis, S, Panou, M, Fakioglu, O, Avagianos, C, Kaloudis, T, Celik, K, Yilmaz, M, Marce, R, Catalan, N, Bravo, AG, Buck, M, Colom-Montero, W, Mustonen, K, Pierson, D, Yang, Y, Raposeiro, PM, Goncalves, V, Antoniou, MG, Tsiarta, N, McCarthy, V, Perello, VC, Feldmann, T, Laas, A, Panksep, K, Tuvikene, L, Gagala, I, Mankiewicz-Boczek, J, Yagci, MA, Cinar, S, Capkin, K, Yagci, A, Cesur, M, Bilgin, F, Bulut, C, Uysal, R, Obertegger, U, Boscaini, A, Flaim, G, Salmaso, N, Cerasino, L, Richardson, J, Visser, PM, Verspagen, JMH, Karan, T, Soylu, EN, Maraslioglu, F, Napiorkowska-Krzebietke, A, Ochocka, A, Pasztaleniec, A, Antao-Geraldes, AM, Vasconcelos, V, Morais, J, Vale, M, Koker, L, Akcaalan, R, Albay, M, Maronic, DS, Stevic, F, Pfeiffer, TZ, Fonvielle, J, Straile, D, Rothhaupt, KO, Hansson, LA, Urrutia-Cordero, P, Blaha, L, Geris, R, Frankova, M, Kocer, MAT, Alp, MT, Remec-Rekar, S, Elersek, T, Triantis, T, Zervou, SK, Hiskia, A, Haande, S, Skjelbred, B, Madrecka, B, Nemova, H, Drastichova, I, Chomova, L, Edwards, C, Sevindik, TO, Tunca, H, Onem, B, Aleksovski, B, Krstic, S, Vucelic, IB, Nawrocka, L, Salmi, P, Machado-Vieira, D, de Oliveira, AG, Delgado-Martin, J, Garcia, D, Cereijo, JL, Goma, J, Trapote, MC, Vegas-Vilarrubia, T, Obrador, B, Grabowska, M, Karpowicz, M, Chmura, D, Ubeda, B, Galvez, JA, Ozen, A, Christoffersen, KS, Warming, TP, Kobos, J, Mazur-Marzec, H, Perez-Martinez, C, Ramos-Rodriguez, E, Arvola, L, Alcaraz-Parraga, P, Toporowska, M, Pawlik-Skowronska, B, Niedzwiecki, M, Peczula, W, Leira, M, Hernandez, A, Moreno-Ostos, E, Blanco, JM, Rodriguez, V, Montes-Perez, JJ, Palomino, RL, Rodriguez-Perez, E, Carballeira, R, Camacho, A, Picazo, A, Rochera, C, Santamans, AC, Ferriol, C, Romo, S, Soria, JM, Dunalska, J, Sienska, J, Szymanski, D, Kruk, M, Kostrzewska-Szlakowska, I, Jasser, I, Zutinic, P, Udovic, MG, Plenkovic-Moraj, A, Frak, M, Bankowska-Sobczak, A, Wasilewicz, M, Ozkan, K, Maliaka, V, Kangro, K, Grossart, HP, Paerl, HW, Carey, CC, Ibelings, BW, Sakarya Üniversitesi/Fen-Edebiyat Fakültesi/Biyoloji Bölümü, Ongun Sevindik, Tuğba, Tunca, Hatice, Hitit Üniversitesi, Fen Edebiyat Fakültesi, Biyoloji Bölümü, and Fen Edebiyat Fakültesi

Subjects
light climate, 0106 biological sciences, thermocline, Bacterial toxins, toksiinit, limit of quantitation, Toxines bacterianes, Microcystin-LR, Toxicology, 01 natural sciences, Anatoxin-a, analogs and derivatives, BLOOMS, Direct Effects, uracil, Water Pollutants, chemistry.chemical_classification, Temperatures, FRESH-WATER, latitude, maximum buoyancy frequency, 6. Clean water, climate change, Indirect effects, EUTROPHICATION, microcystin RR, articles, GROWTH, lämpötila, LAKES, microcystin, anatoxin, cylindrospermopsin, temperature, direct effects, indirect effects, spatial distribution, European Multi Lake Survey, epilimnetic temperature, ta1172, cyanobacteria, lakes, climate warming, microcystin, Zoology, Article, water pollutant, MICROCYSTIS-AERUGINOSA, Alkaloids, Settore BIO/07 - ECOLOGIA, NATURAL SCIENCES. Biology, Spatial distribution, Microcystis aeruginosa, Uracil, lake, syanobakteerit, Indirect Effects, liquid chromatography-mass spectrometry, 1172 Environmental sciences, Ekologi, nutrient, 010604 marine biology & hydrobiology, lcsh:R, microbiology, Climatic changes, microcystin LR, Anatoxin, Lakes, Spatial Distribution, chemistry, nodularin, microbial diversity, phytoplankton, ta1181, Cylindrospermopsin, Tropanes, Cyanobacteria, Aquatic Ecology and Water Quality Management, analysis, Health, Toxicology and Mutagenesis, lcsh:Medicine, environmental parameters, 010501 environmental sciences, medicine.disease_cause, nitrogen, chemistry.chemical_compound, sea surface temperature, environmental factor, ddc:550, Canvi climàtic, phosphorus, PRIRODNE ZNANOSTI. Biologija, limit of detection, Ecology, Cyanobacteria Toxins, biology, Temperature, levinneisyys, Nodularin, tropane derivative, Europe, DAPHNIA-MAGNA, İndirect Effects, Direct effects, microbial community, Environmental Monitoring, high performance liquid chromatography, Microcystins, Climate Change, Bacterial Toxins, Microcystin, välittömät oikeusvaikutukset, cyanobacterium, ddc:570, geographic distribution, medicine, bacterial toxin, controlled study, ddc:610, Institut für Biochemie und Biologie, 0105 earth and related environmental sciences, nonhuman, WIMEK, Toxin, longitude, PHYTOPLANKTON ASSEMBLAGES, Aquatic Ecology, NITROGEN AVAILABILITY, anatoxin a, Aquatische Ecologie en Waterkwaliteitsbeheer, biology.organism_classification, Climatic change, CLIMATE, 13. Climate action, response variable, Canvis climàtics
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. © 2018 by the authors. Licensee MDPI, Basel, Switzerland., 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 the University of Geneva. We thank Clare Ahnlund, Ena Suarez and Irene Gallego for helping out with the Swiss survey. We thank Wendy Beekman and Els J. Faassen for the nutrient and toxin analysis.

Published
2018

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

Author

Tunca, Hatice, Mantzouki, E, Campbell, J, van Loon, E, Visser, P, Konstantinou, I, Antoniou, M, Giuliani, G, Machado-Vieira, D, de Oliveira, AG, Maronic, DS, Stevic, F, Pfeiffer, TZ, Vucelic, IB, Zutinic, P, Udovic, MG, Plenkovic-Moraj, A, Tsiarta, N, Blaha, L, Geris, R, Frankova, M, Christoffersen, KS, Warming, TP, Feldmann, T, Laas, A, Panksep, K, Tuvikene, L, Kangro, K, Haggqvist, K, Salmi, P, Arvola, L, Fastner, J, Straile, D, Rothhaupt, KO, Fonvielle, J, Grossart, HP, Avagianos, C, Kaloudis, T, Triantis, T, Zervou, SK, Hiskia, A, Gkelis, S, Panou, M, McCarthy, V, Perello, VC, Obertegger, U, Boscaini, A, Flaim, G, Salmaso, N, Cerasino, L, Koreiviene, J, Karosiene, J, Kasperoviciene, J, Savadova, K, Vitonyte, I, Haande, S, Skjelbred, B, Grabowska, M, Karpowicz, M, Chmura, D, Nawrocka, L, Kobos, J, Mazur-Marzec, H, Alcaraz-Parraga, P, Wilk-Wozniak, E, Krzton, W, Walusiak, E, Gagala, I, Mankiewicz-Boczek, J, Toporowska, M, Pawlik-Skowronska, B, Niedzwiecki, M, Peczula, W, Napiorkowska-Krzebietke, A, Dunalska, J, Sienska, J, Szymanski, D, Kruk, M, Budzynska, A, Goldyn, R, Kozak, A, Rosinska, J, Szelag-Wasielewska, E, Domek, P, Jakubowska-Krepska, N, Kwasizur, K, Messyasz, B, Pelechata, A, Pelechaty, M, Kokocinski, M, Madrecka, B, Kostrzewska-Szlakowska, I, Frak, M, Bankowska-Sobczak, A, Wasilewicz, M, Ochocka, A, Pasztaleniec, A, Jasser, I, Antao-Geraldes, AM, Leira, M, Hernandez, A, Vasconcelos, V, Morais, J, Vale, M, Raposeiro, PM, Goncalves, V, Aleksovski, B, Krstic, S, Nemova, H, Drastichova, I, Chomova, L, Remec-Rekar, S, Elersek, T, Delgado-Martin, J, Garcia, D, Cereijo, JL, Goma, J, Trapote, MC, Vegas-Vilarrubia, T, Obrador, B, Garcia-Murcia, A, Real, M, Romans, E, Noguero-Ribes, J, Duque, DP, Fernandez-Moran, E, Ubeda, B, Galvez, JA, Marce, R, Catalan, N, Perez-Martinez, C, Ramos-Rodriguez, E, Cillero-Castro, C, Moreno-Ostos, E, Blanco, JM, Rodriguez, V, Montes-Perez, JJ, Palomino, RL, Rodriguez-Perez, E, Carballeira, R, Camacho, A, Picazo, A, Rochera, C, Santamans, AC, Ferriol, C, Romo, S, Soria, JM, Hansson, LA, Urrutia-Cordero, P, Ozen, A, Bravo, AG, Buck, M, Colom-Montero, W, Mustonen, K, Pierson, D, Yang, Y, Verspagen, JMH, Domis, LND, Seelen, L, Teurlincx, S, Verstijnen, Y, Lurling, M, Maliaka, V, Faassen, EJ, Latour, D, Carey, CC, Paerl, HW, Torokne, A, Karan, T, Demir, N, Beklioglu, M, Filiz, N, Levi, EE, Iskin, U, Bezirci, G, Tavsanoglu, UN, Celik, K, Ozhan, K, Karakaya, N, Kocer, MAT, Yilmaz, M, Maraslioglu, F, Fakioglu, O, Soylu, EN, Yagci, MA, Cinar, S, Capkin, K, Yagci, A, Cesur, M, Bilgin, F, Bulut, C, Uysal, R, Koker, L, Akcaalan, R, Albay, M, Alp, MT, Ozkan, K, Sevindik, TO, Tunca, H, Onem, B, Richardson, J, Edwards, C, Bergkemper, V, O'Leary, S, Beirne, E, Cromie, H, Ibelings, BW, Sakarya Üniversitesi/Fen-Edebiyat Fakültesi/Biyoloji Bölümü, and Tunca, Hatice

Subjects
Science & Technology - Other Topics
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.

Published
2018

40. Plankton dynamics across the freshwater, transitional and marine research sites of the LTER-Italy Network. Patterns, fluctuations, drivers

Author

Francesca Margiotta, Mauro Bastianini, Antonella Gesuina Laura Lugliè, Iole Di Capua, Marina Cabrini, Paolo Povero, Diana Sarno, Michela Castellano, Mauro Marini, Giampaolo Rossetti, Alessandra de Olazabal, Alessandro Ludovisi, Ilaria Rosati, Elena Stanca, Mariano Bresciani, Nico Salmaso, Alessandra Pugnetti, Marina Giallain, Marina Manca, Cecilia Totti, Cecilia Teodora Satta, Antonia Concetta Elia, Mara Marzocchi, Marco Pansera, Nicola Sechi, Silvia Pulina, Federica Grilli, Giuseppe Morabito, Ulrike Obertegger, Valentina Tirelli, Genuario Belmonte, Daniela Fornasaro, Barbara Leoni, Tiziana Romagnoli, Maria Antonietta Mariani, Fabrizio Bernardi Aubry, Carmela Caroppo, Caterina Bergami, M. Lipizer, Bachisio Mario Padedda, Isabella Bertani, Elisa Camatti, Fabio Buzzi, Bruno Cataletto, Roberta Piscia, Paola Del Negro, Maria Grazia Mazzocchi, Giovanna Flaim, Alberto Basset, Alessandro Oggioni, Adriana Zingone, Fernando Rubino, Stefano Accoroni, Lorenzo Longobardi, Giuseppe, Morabito, Maria Grazia Mazzocchi, Nico, Salmaso, Adriana, Zingone, Caterina, Bergami, Giovanna, Flaim, Stefano, Accoroni, Basset, Alberto, Mauro, Bastianini, Belmonte, Genuario, Fabrizio Bernardi Aubry, Isabella, Bertani, Mariano, Bresciani, Fabio, Buzzi, Marina, Cabrini, Elisa, Camatti, Carmela, Caroppo, Bruno, Cataletto, Michela, Castellano, Paola Del Negro, Alessandra de Olazabal, Iole Di Capua, Antonia Concetta Elia, Daniela, Fornasaro, Marina, Giallain, Federica, Grilli, Barbara, Leoni, Marina, Lipizer, Lorenzo, Longobardi, Alessandro, Ludovisi, Antonella, Lugliè, Marina, Manca, Francesca, Margiotta, Maria Antonietta Mariani, Mauro, Marini, Mara, Marzocchi, Ulrike, Obertegger, Alessandro, Oggioni, Bachisio Mario Padedda, Marco, Pansera, Roberta, Piscia, Paolo, Povero, Silvia, Pulina, Tiziana, Romagnoli, Rosati, Ilaria, Giampaolo, Rossetti, Fernando, Rubino, Diana, Sarno, Cecilia Teodora Satta, Sechi, Nicola, Stanca, Elena, Valentina, Tirelli, Cecilia, Totti, Alessandra, Pugnetti, Morabito, G, Mazzocchi, M, Salmaso, N, Zingone, A, Bergami, C, Flaim, G, Accoroni, S, Basset, A, Bastianini, M, Belmonte, G, Bernardi Aubry, F, Bertani, I, Bresciani, M, Buzzi, F, Cabrini, M, Camatti, E, Caroppo, C, Cataletto, B, Castellano, M, Del Negro, P, de Olazabal, A, Di Capua, I, Elia, A, Fornasaro, D, Giallain, M, Grilli, F, Leoni, B, Lipizer, M, Longobardi, L, Ludovisi, A, Lugliè, A, Manca, M, Margiotta, F, Mariani, M, Marini, M, Marzocchi, M, Obertegger, U, Oggioni, A, Padedda, B, Pansera, M, Piscia, R, Povero, P, Pulina, S, Romagnoli, T, Rosati, I, Rossetti, G, Rubino, F, Sarno, D, Satta, C, Sechi, N, Stanca, E, Tirelli, V, Totti, C, and Pugnetti, A

Subjects
0106 biological sciences, LTER-Italy aquatic site, Environmental Engineering, Freshwater inflow, 010504 meteorology & atmospheric sciences, LTER-Italy, Population Dynamics, Aquatic ecosystem, Ecological succession, LTER, 01 natural sciences, Zooplankton, Settore BIO/07 - ECOLOGIA, Phytoplankton, Environmental Chemistry, Animals, Ecosystem, Waste Management and Disposal, 0105 earth and related environmental sciences, Driving factors, Ecology, seasonality, 010604 marine biology & hydrobiology, plankton, fungi, Pelagic zone, Plankton, Pollution, Mesozooplankton, Aquatic ecosystems, Italy, long term changes, Aquatic ecosystems, LTER-Italy, Mesozooplankton, Phytoplankton, Environmental science, BIO/07 - ECOLOGIA, BIO/05 - ZOOLOGIA, Environmental Monitoring
Abstract

A first synoptic and trans-domain overview of plankton dynamics was conducted across the aquatic sites belonging to the Italian Long-Term Ecological Research Network (LTER-Italy). Based on published studies, checked and complemented with unpublished information, we investigated phytoplankton and zooplankton annual dynamics and long-term changes across domains: from the large subalpine lakes to mountain lakes and artificial lakes, from lagoons to marine coastal ecosystems. This study permitted identifying common and unique environmental drivers and ecological functional processes controlling seasonal and long-term temporal course. The most relevant patterns of plankton seasonal succession were revealed, showing that the driving factors were nutrient availability, stratification regime, and freshwater inflow. Phytoplankton and mesozooplankton displayed a wide interannual variability at most sites. Unidirectional or linear long-term trends were rarely detected but all sites were impacted across the years by at least one, but in many case several major stressor(s): nutrient inputs, meteo-climatic variability at the local and regional scale, and direct human activities at specific sites. Different climatic and anthropic forcings frequently co-occurred, whereby the responses of plankton communities were the result of this environmental complexity. Overall, the LTER investigations are providing an unparalleled framework of knowledge to evaluate changes in the aquatic pelagic systems and management options.

Published
2017

42. Towards critical white ice conditions in lakes under global warming.

Author

Weyhenmeyer GA, Obertegger U, Rudebeck H, Jakobsson E, Jansen J, Zdorovennova G, Bansal S, Block BD, Carey CC, Doubek JP, Dugan H, Erina O, Fedorova I, Fischer JM, Grinberga L, Grossart HP, Kangur K, Knoll LB, Laas A, Lepori F, Meier J, Palshin N, Peternell M, Pulkkanen M, Rusak JA, Sharma S, Wain D, and Zdorovennov R

Subjects
Global Warming, Humans, Ice Cover, Seasons, Temperature, Ice, Lakes
Abstract

The quality of lake ice is of uppermost importance for ice safety and under-ice ecology, but its temporal and spatial variability is largely unknown. Here we conducted a coordinated lake ice quality sampling campaign across the Northern Hemisphere during one of the warmest winters since 1880 and show that lake ice during 2020/2021 commonly consisted of unstable white ice, at times contributing up to 100% to the total ice thickness. We observed that white ice increased over the winter season, becoming thickest and constituting the largest proportion of the ice layer towards the end of the ice cover season when fatal winter drownings occur most often and light limits the growth and reproduction of primary producers. We attribute the dominance of white ice before ice-off to air temperatures varying around the freezing point, a condition which occurs more frequently during warmer winters. Thus, under continued global warming, the prevalence of white ice is likely to substantially increase during the critical period before ice-off, for which we adjusted commonly used equations for human ice safety and light transmittance through ice., (© 2022. The Author(s).)

Published
2022
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43. A European Multi Lake Survey dataset of environmental variables, phytoplankton pigments and cyanotoxins.

Author

Mantzouki E, Campbell J, van Loon E, Visser P, Konstantinou I, Antoniou M, Giuliani G, Machado-Vieira D, Gurjão de Oliveira A, Maronić DŠ, Stević F, Pfeiffer TŽ, Vucelić IB, Žutinić P, Udovič MG, Plenković-Moraj A, Tsiarta N, Bláha L, Geriš R, Fránková M, Christoffersen KS, Warming TP, Feldmann T, Laas A, Panksep K, Tuvikene L, Kangro K, Häggqvist K, Salmi P, Arvola L, Fastner J, Straile D, Rothhaupt KO, Fonvielle J, Grossart HP, Avagianos C, Kaloudis T, Triantis T, Zervou SK, Hiskia A, Gkelis S, Panou M, McCarthy V, Perello VC, Obertegger U, Boscaini A, Flaim G, Salmaso N, Cerasino L, Koreivienė J, Karosienė J, Kasperovičienė J, Savadova K, Vitonytė I, Haande S, Skjelbred B, Grabowska M, Karpowicz M, Chmura D, Nawrocka L, Kobos J, Mazur-Marzec H, Alcaraz-Párraga P, Wilk-Woźniak E, Krztoń W, Walusiak E, Gagala I, Mankiewicz-Boczek J, Toporowska M, Pawlik-Skowronska B, Niedźwiecki M, Pęczuła W, Napiórkowska-Krzebietke A, Dunalska J, Sieńska J, Szymański D, Kruk M, Budzyńska A, Goldyn R, Kozak A, Rosińska J, Szeląg-Wasielewska E, Domek P, Jakubowska-Krepska N, Kwasizur K, Messyasz B, Pełechata A, Pełechaty M, Kokocinski M, Madrecka B, Kostrzewska-Szlakowska I, Frąk M, Bańkowska-Sobczak A, Wasilewicz M, Ochocka A, Pasztaleniec A, Jasser I, Antão-Geraldes AM, Leira M, Hernández A, Vasconcelos V, Morais J, Vale M, Raposeiro PM, Gonçalves V, Aleksovski B, Krstić S, Nemova H, Drastichova I, Chomova L, Remec-Rekar S, Elersek T, Delgado-Martín J, García D, Cereijo JL, Gomà J, Trapote MC, Vegas-Vilarrúbia T, Obrador B, García-Murcia A, Real M, Romans E, Noguero-Ribes J, Duque DP, Fernández-Morán E, Úbeda B, Gálvez JÁ, Marcé R, Catalán N, Pérez-Martínez C, Ramos-Rodríguez E, Cillero-Castro C, Moreno-Ostos E, Blanco JM, Rodríguez V, Montes-Pérez JJ, Palomino RL, Rodríguez-Pérez E, Carballeira R, Camacho A, Picazo A, Rochera C, Santamans AC, Ferriol C, Romo S, Soria JM, Hansson LA, Urrutia-Cordero P, Özen A, Bravo AG, Buck M, Colom-Montero W, Mustonen K, Pierson D, Yang Y, M H Verspagen J, de Senerpont Domis LN, Seelen L, Teurlincx S, Verstijnen Y, Lürling M, Maliaka V, Faassen EJ, Latour D, Carey CC, W Paerl H, Torokne A, Karan T, Demir N, Beklioğlu M, Filiz N, E Levi E, Iskin U, Bezirci G, Tavşanoğlu ÜN, Çelik K, Özhan K, Karakaya N, Koçer MAT, Yilmaz M, Maraşlıoğlu F, Fakioglu Ö, Soylu EN, Yağcı MA, Çınar Ş, Çapkın K, Yağcı A, Cesur M, Bilgin F, Bulut C, Uysal R, Köker L, Akçaalan R, Albay M, Alp MT, Özkan K, Sevindik TO, Tunca H, Önem B, Richardson J, Edwards C, Bergkemper V, O'Leary S, Beirne E, Cromie H, and Ibelings BW

Subjects
Climate Change, Europe, Phytoplankton chemistry, Pigments, Biological, Cyanobacteria chemistry, Environmental Monitoring, Lakes
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.

Published
2018
Full Text
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44. Temperature Effects Explain Continental Scale Distribution of Cyanobacterial Toxins.

Author

Mantzouki E, Lürling M, Fastner J, de Senerpont Domis L, Wilk-Woźniak E, Koreivienė J, Seelen L, Teurlincx S, Verstijnen Y, Krztoń W, Walusiak E, Karosienė J, Kasperovičienė J, Savadova K, Vitonytė I, Cillero-Castro C, Budzyńska A, Goldyn R, Kozak A, Rosińska J, Szeląg-Wasielewska E, Domek P, Jakubowska-Krepska N, Kwasizur K, Messyasz B, Pełechaty A, Pełechaty M, Kokocinski M, García-Murcia A, Real M, Romans E, Noguero-Ribes J, Duque DP, Fernández-Morán E, Karakaya N, Häggqvist K, Demir N, Beklioğlu M, Filiz N, Levi EE, Iskin U, Bezirci G, Tavşanoğlu ÜN, Özhan K, Gkelis S, Panou M, Fakioglu Ö, Avagianos C, Kaloudis T, Çelik K, Yilmaz M, Marcé R, Catalán N, Bravo AG, Buck M, Colom-Montero W, Mustonen K, Pierson D, Yang Y, Raposeiro PM, Gonçalves V, Antoniou MG, Tsiarta N, McCarthy V, Perello VC, Feldmann T, Laas A, Panksep K, Tuvikene L, Gagala I, Mankiewicz-Boczek J, Yağcı MA, Çınar Ş, Çapkın K, Yağcı A, Cesur M, Bilgin F, Bulut C, Uysal R, Obertegger U, Boscaini A, Flaim G, Salmaso N, Cerasino L, Richardson J, Visser PM, Verspagen JMH, Karan T, Soylu EN, Maraşlıoğlu F, Napiórkowska-Krzebietke A, Ochocka A, Pasztaleniec A, Antão-Geraldes AM, Vasconcelos V, Morais J, Vale M, Köker L, Akçaalan R, Albay M, Špoljarić Maronić D, Stević F, Žuna Pfeiffer T, Fonvielle J, Straile D, Rothhaupt KO, Hansson LA, Urrutia-Cordero P, Bláha L, Geriš R, Fránková M, Koçer MAT, Alp MT, Remec-Rekar S, Elersek T, Triantis T, Zervou SK, Hiskia A, Haande S, Skjelbred B, Madrecka B, Nemova H, Drastichova I, Chomova L, Edwards C, Sevindik TO, Tunca H, Önem B, Aleksovski B, Krstić S, Vucelić IB, Nawrocka L, Salmi P, Machado-Vieira D, de Oliveira AG, Delgado-Martín J, García D, Cereijo JL, Gomà J, Trapote MC, Vegas-Vilarrúbia T, Obrador B, Grabowska M, Karpowicz M, Chmura D, Úbeda B, Gálvez JÁ, Özen A, Christoffersen KS, Warming TP, Kobos J, Mazur-Marzec H, Pérez-Martínez C, Ramos-Rodríguez E, Arvola L, Alcaraz-Párraga P, Toporowska M, Pawlik-Skowronska B, Niedźwiecki M, Pęczuła W, Leira M, Hernández A, Moreno-Ostos E, Blanco JM, Rodríguez V, Montes-Pérez JJ, Palomino RL, Rodríguez-Pérez E, Carballeira R, Camacho A, Picazo A, Rochera C, Santamans AC, Ferriol C, Romo S, Soria JM, Dunalska J, Sieńska J, Szymański D, Kruk M, Kostrzewska-Szlakowska I, Jasser I, Žutinić P, Gligora Udovič M, Plenković-Moraj A, Frąk M, Bańkowska-Sobczak A, Wasilewicz M, Özkan K, Maliaka V, Kangro K, Grossart HP, Paerl HW, Carey CC, and Ibelings BW

Subjects
Alkaloids, Climate Change, Cyanobacteria Toxins, Environmental Monitoring, Europe, Temperature, Uracil analysis, Bacterial Toxins analysis, Cyanobacteria, Lakes microbiology, Microcystins analysis, Tropanes analysis, Uracil analogs & derivatives, Water Pollutants analysis
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., Competing Interests: The authors declare no conflict of interest.

Published
2018
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45. Comparative Analysis of Membrane Lipids in Psychrophilic and Mesophilic Freshwater Dinoflagellates.

Author

Anesi A, Obertegger U, Hansen G, Sukenik A, Flaim G, and Guella G

Abstract

Here we report the lipid profiles of ten dinoflagellate species originating from different freshwater habitats and grown at 4, 13, or 20°C akin to their natural occurrence. Lipids were determined by High Performance Liquid Chromatography-ElectroSpray Ionization-Mass Spectrometry in positive and negative ion modes. Besides the well-studied monogalactosyldiacylglycerol (MGDG) and digalactosyldiacylglycerol (DGDG) lipids, our study revealed the presence of intact molecular lipid species of trigalactosyldiacylglycerols, betaine diacylglyceryl-carboxyhydroxymethylcholine, sulfolipid sulfoquinovosyldiacylglycerols (SQDG) and phospholipids, in particular phosphatidylcholine, phosphatidylethanolamine and phosphatidylglycerol. In multivariate ordination, the freshwater dinoflagellates studied could be distinguished into two groups based on their lipid profiles. Peridinium aciculiferum, Borghiella dodgei, B. tenuissima and Tovellia coronata belonged to group 1 while Ceratium cornutum, Gymnodinium palustre, Jadwigia applanata, P. cinctum, P. willei, and P. gatunense belonged to group 2. Indicator species analysis evidenced that group 1 was characterized by 36:9 MGDG and 36:9 DGDG and group 2 by 38:9 and 38:10 MGDG, 38:9 and 38:10 DGDG and 34:1 SQDG. We suggest that the grouping of dinoflagellates indicated their range of temperature tolerance. Furthermore, non-thylakoid lipids were linked to dinoflagellate phylogeny based on the large ribosomal sub-unit (28S LSU) rather than their temperature tolerance. Thus certain lipids better reflected habitat adaptation while other lipids better reflected genetic diversity.

Published
2016
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46. Sexual species are separated by larger genetic gaps than asexual species in rotifers.

Author

Tang CQ, Obertegger U, Fontaneto D, and Barraclough TG

Subjects
Animals, DNA, Mitochondrial genetics, Genetics, Population, Linear Models, Models, Genetic, Rotifera physiology, Sequence Analysis, DNA, Biological Evolution, Phylogeny, Reproduction, Asexual genetics, Rotifera classification
Abstract

Why organisms diversify into discrete species instead of showing a continuum of genotypic and phenotypic forms is an important yet rarely studied question in speciation biology. Does species discreteness come from adaptation to fill discrete niches or from interspecific gaps generated by reproductive isolation? We investigate the importance of reproductive isolation by comparing genetic discreteness, in terms of intra- and interspecific variation, between facultatively sexual monogonont rotifers and obligately asexual bdelloid rotifers. We calculated the age (phylogenetic distance) and average pairwise genetic distance (raw distance) within and among evolutionarily significant units of diversity in six bdelloid clades and seven monogonont clades sampled for 4211 individuals in total. We find that monogonont species are more discrete than bdelloid species with respect to divergence between species but exhibit similar levels of intraspecific variation (species cohesiveness). This pattern arises because bdelloids have diversified into discrete genetic clusters at a faster net rate than monogononts. Although sampling biases or differences in ecology that are independent of sexuality might also affect these patterns, the results are consistent with the hypothesis that bdelloids diversified at a faster rate into less discrete species because their diversification does not depend on the evolution of reproductive isolation., (© 2014 The Authors. Evolution published by Wiley Periodicals, Inc. on behalf of The Society for the Study of Evolution.)

Published
2014
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47. The widely used small subunit 18S rDNA molecule greatly underestimates true diversity in biodiversity surveys of the meiofauna.

Author

Tang CQ, Leasi F, Obertegger U, Kieneke A, Barraclough TG, and Fontaneto D

Subjects
Base Sequence, DNA Primers genetics, Electron Transport Complex IV genetics, Likelihood Functions, Molecular Sequence Data, Nucleic Acid Amplification Techniques, Predictive Value of Tests, Sequence Analysis, DNA, Biodiversity, Genetic Markers genetics, Genetic Variation genetics, Metagenome genetics, Models, Genetic, Phylogeny, RNA, Ribosomal, 18S genetics
Abstract

Molecular tools have revolutionized the exploration of biodiversity, especially in organisms for which traditional taxonomy is difficult, such as for microscopic animals (meiofauna). Environmental (eDNA) metabarcode surveys of DNA extracted from sediment samples are increasingly popular for surveying biodiversity. Most eDNA surveys use the nuclear gene-encoding small-subunit rDNA gene (18S) as a marker; however, different markers and metrics used for delimiting species have not yet been evaluated against each other or against morphologically defined species (morphospecies). We assessed more than 12,000 meiofaunal sequences of 18S and of the main alternatively used marker [Cytochrome c oxidase subunit I (COI) mtDNA] belonging to 55 datasets covering three taxonomic ranks. Our results show that 18S reduced diversity estimates by a factor of 0.4 relative to morphospecies, whereas COI increased diversity estimates by a factor of 7.6. Moreover, estimates of species richness using COI were robust among three of four commonly used delimitation metrics, whereas estimates using 18S varied widely with the different metrics. We show that meiofaunal diversity has been greatly underestimated by 18S eDNA surveys and that the use of COI provides a better estimate of diversity. The suitability of COI is supported by cross-mating experiments in the literature and evolutionary analyses of discreteness in patterns of genetic variation. Furthermore its splitting of morphospecies is expected from documented levels of cryptic taxa in exemplar meiofauna. We recommend against using 18S as a marker for biodiversity surveys and suggest that use of COI for eDNA surveys could provide more accurate estimates of species richness in the future.

Published
2012
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