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1. 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

2. 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

3. Global patterns in the metacommunity structuring of lake macrophytes:regional variations and driving factors

Author

Alahuhta, J. (Janne), Lindholm, M. (Marja), Bove, C. P. (Claudia P.), Chappuis, E. (Eglantine), Clayton, J. (John), de Winton, M. (Mary), Feldmann, T. (Tõnu), Ecke, F. (Frauke), Gacia, E. (Esperança), Grillas, P. (Patrick), Hoyer, M. V. (Mark V.), Johnson, L. B. (Lucinda B.), Kolada, A. (Agnieszka), Kosten, S. (Sarian), Lauridsen, T. (Torben), Lukács, B. A. (Balázs A.), Mjelde, M. (Marit), Mormul, R. P. (Roger P.), Rhazi, L. (Laila), Rhazi, M. (Mouhssine), Sass, L. (Laura), Søndergaard, M. (Martin), Xu, J. (Jun), and Heino, J. (Jani)

Subjects
Biogeography, Metacommunity ecology, Spatial processes, Spatial variation, Elevation range, Aquatic plants, Environmental filtering, Hydrophytes, Community structure
Abstract

We studied community–environment relationships of lake macrophytes at two metacommunity scales using data from 16 regions across the world. More specifically, we examined (a) whether the lake macrophyte communities respond similar to key local environmental factors, major climate variables and lake spatial locations in each of the regions (i.e., within-region approach) and (b) how well can explained variability in the community–environment relationships across multiple lake macrophyte metacommunities be accounted for by elevation range, spatial extent, latitude, longitude, and age of the oldest lake within each metacommunity (i.e., across-region approach). In the within-region approach, we employed partial redundancy analyses together with variation partitioning to investigate the relative importance of local variables, climate variables, and spatial location on lake macrophytes among the study regions. In the across-region approach, we used adjusted R2 values of the variation partitioning to model the community–environment relationships across multiple metacommunities using linear regression and commonality analysis. We found that niche filtering related to local lake-level environmental conditions was the dominant force structuring macrophytes within metacommunities. However, our results also revealed that elevation range associated with climate (increasing temperature amplitude affecting macrophytes) and spatial location (likely due to dispersal limitation) was important for macrophytes based on the findings of the across-metacommunities analysis. These findings suggest that different determinants influence macrophyte metacommunities within different regions, thus showing context dependency. Moreover, our study emphasized that the use of a single metacommunity scale gives incomplete information on the environmental features explaining variation in macrophyte communities.

Published
2018

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