Widespread deoxygenation of temperate lakes

Autor: Donald C. Pierson, Chris G. McBride, Benjamin M. Kraemer, Steven Sadro, Michela Rogora, Julita Dunalska, Laura Diemer, Kathleen C. Weathers, Jean-Philippe Jenny, Wim Thiery, Andrew M. Paterson, Dörthe C. Müller-Navarra, Martin Schmid, Gretchen J. A. Hansen, Émilie Saulnier-Talbot, Rebecca L. North, Rachel M. Pilla, Joshua L. Mincer, Lauri Arvola, Ruben Sommaruga, John R. Jones, Gesa A. Weyhenmeyer, Kevin C. Rose, Josef Hejzlar, Barbara Leoni, Jonathan T. Stetler, James A. Rusak, O. Erina, Lesley B. Knoll, Lorraine L. Janus, Curtis L. DeGasperi, Craig E. Williamson, Sudeep Chandra, Peter R. Leavitt, Eleanor B. Mackay, Piet Verburg, K. David Hambright, Kiyoko Yokota, Stephen F. Jane, Giovanna Flaim, Hans-Peter Grossart, Catherine L. Hein, R. Iestyn Woolway, Shin-ichiro S. Matsuzaki
Přispěvatelé: Jane, S, Hansen, G, Kraemer, B, Leavitt, P, Mincer, J, North, R, Pilla, R, Stetler, J, Williamson, C, Woolway, R, Arvola, L, Chandra, S, Degasperi, C, Diemer, L, Dunalska, J, Erina, O, Flaim, G, Grossart, H, Hambright, K, Hein, C, Hejzlar, J, Janus, L, Jenny, J, Jones, J, Knoll, L, Leoni, B, Mackay, E, Matsuzaki, S, Mcbride, C, Muller-Navarra, D, Paterson, A, Pierson, D, Rogora, M, Rusak, J, Sadro, S, Saulnier-Talbot, E, Schmid, M, Sommaruga, R, Thiery, W, Verburg, P, Weathers, K, Weyhenmeyer, G, Yokota, K, Rose, K, Hydrology and Hydraulic Engineering, Centre Alpin de Recherche sur les Réseaux Trophiques et Ecosystèmes Limniques (CARRTEL), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), National Science Foundation (NSF)11373271702991163870417542651761805US Fulbright Student grantGerman Research Foundation (DFG)AD 91/22-1Natural Sciences and Engineering Research Council of Canada (NSERC)Canada Research ChairsProvince of SaskatchewanQueen's University BelfastMissouri Department of Natural ResourcesMissouri Agricultural Experiment StationNational Science Foundation (NSF)17542761950170Miami University Eminent Scholar FundEuropean Commission791812University of NevadaUC DavisUniversity of Warmia and Mazury in OlsztynRussian Science Foundation (RSF)19-77-30004Oklahoma Department of Wildlife ConservationOklahoma Water Resources BoardUnited States Department of DefenseCity of TulsaERDF/ESF project Biomanipulation as a tool for improving water quality of dam reservoirsCZ.02.1.01/0.0/0.0/16_025/0007417FA-UNIMIBUK Research & Innovation (UKRI)Natural Environment Research Council (NERC)International Commission for the Protection of Italian-Swiss Waters (CIPAIS)LTSER platform Tyrolean Alps (LTER-Austria)Belgian Federal Science Policy OfficeCD/AR/02AClark Foundation
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Nature
Nature, Nature Publishing Group, 2021, 594 (7861), pp.66-70. ⟨10.1038/s41586-021-03550-y⟩
ISSN: 0028-0836
1476-4679
DOI: 10.1038/s41586-021-03550-y⟩
Popis: The concentration of dissolved oxygen in aquatic systems helps to regulate biodiversity1,2, nutrient biogeochemistry3, greenhouse gas emissions4, and the quality of drinking water5. The long-term declines in dissolved oxygen concentrations in coastal and ocean waters have been linked to climate warming and human activity6,7, but little is known about the changes in dissolved oxygen concentrations in lakes. Although the solubility of dissolved oxygen decreases with increasing water temperatures, long-term lake trajectories are difficult to predict. Oxygen losses in warming lakes may be amplified by enhanced decomposition and stronger thermal stratification8,9 or oxygen may increase as a result of enhanced primary production10. Here we analyse a combined total of 45,148 dissolved oxygen and temperature profiles and calculate trends for 393 temperate lakes that span 1941 to 2017. We find that a decline in dissolved oxygen is widespread in surface and deep-water habitats. The decline in surface waters is primarily associated with reduced solubility under warmer water temperatures, although dissolved oxygen in surface waters increased in a subset of highly productive warming lakes, probably owing to increasing production of phytoplankton. By contrast, the decline in deep waters is associated with stronger thermal stratification and loss of water clarity, but not with changes in gas solubility. Our results suggest that climate change and declining water clarity have altered the physical and chemical environment of lakes. Declines in dissolved oxygen in freshwater are 2.75 to 9.3 times greater than observed in the world’s oceans6,7 and could threaten essential lake ecosystem services2,3,5,11.
The concentration of dissolved oxygen in aquatic systems helps to regulate biodiversity, nutrient biogeochemistry, greenhouse gas emissions, and the quality of drinking water. The long-term declines in dissolved oxygen concentrations in coastal and ocean waters have been linked to climate warming and human activity, but little is known about the changes in dissolved oxygen concentrations in lakes. Although the solubility of dissolved oxygen decreases with increasing water temperatures, long-term lake trajectories are difficult to predict. Oxygen losses in warming lakes may be amplified by enhanced decomposition and stronger thermal stratification8,9 or oxygen may increase as a result of enhanced primary production10. Here we analyse a combined total of 45,148 dissolved oxygen and temperature profiles and calculate trends for 393 temperate lakes that span 1941 to 2017. We find that a decline in dissolved oxygen is widespread in surface and deep-water habitats. The decline in surface waters is primarily associated with reduced solubility under warmer water temperatures, although dissolved oxygen in surface waters increased in a subset of highly productive warming lakes, probably owing to increasing production of phytoplankton. By contrast, the decline in deep waters is associated with stronger thermal stratification and loss of water clarity, but not with changes in gas solubility. Our results suggest that climate change and declining water clarity have altered the physical and chemical environment of lakes. Declines in dissolved oxygen in freshwater are 2.75 to 9.3 times greater than observed in the world’s oceans and could threaten essential lake ecosystem services.
Databáze: OpenAIRE
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