Towards critical white ice conditions in lakes under global warming.

Autor: Weyhenmeyer GA; Department of Ecology and Genetics/Limnology, Uppsala University, Uppsala, Sweden. Gesa.Weyhenmeyer@ebc.uu.se., Obertegger U; Fondazione Edmund Mach, Research and Innovation Centre, San Michele all'Adige, Italy., Rudebeck H; Department of Ecology and Genetics/Limnology, Uppsala University, Uppsala, Sweden., Jakobsson E; Department of Ecology and Genetics/Limnology, Uppsala University, Uppsala, Sweden., Jansen J; Department of Ecology and Genetics/Limnology, Uppsala University, Uppsala, Sweden., Zdorovennova G; Northern Water Problems Institute, Karelian Research Centre RAS, Petrozavodsk, Russia., Bansal S; U.S. Geological Survey, Northern Prairie Wildlife Research Center, Jamestown, ND, USA., Block BD; Center for Ecological Sciences, Tetra Tech, Inc., Montpelier, VT, USA., Carey CC; Department of Biological Sciences, Virginia Tech, Blacksburg, VA, USA., Doubek JP; School of Natural Resources & Environment, Lake Superior State University, Sault Sainte Marie, MI, USA.; Center for Freshwater Research and Education, Lake Superior State University, Sault Sainte Marie, MI, USA., Dugan H; Center for Limnology, University of Wisconsin-Madison, Madison, WI, USA., Erina O; Lomonosov Moscow State University, Moscow, Russia., Fedorova I; St Petersburg State University, St Petersburg, Russia., Fischer JM; Department of Biology, Franklin & Marshall College, Lancaster, PA, USA., Grinberga L; Laboratory of Hydrobiology, Institute of Biology, University of Latvia, Riga, Latvia., Grossart HP; Department Plankton and Microbial Ecology, Leibniz Institute for Freshwater Ecology and Inland Fisheries, Stechlin, Germany.; Department of Biochemistry and Biology, Potsdam University, Potsdam, Germany., Kangur K; Centre for Limnology, Chair of Hydrobiology and Fishery, Institute of Agricultural and Environmental Sciences, Estonian University of Life- Sciences, Tartu, Estonia., Knoll LB; Itasca Biological Station, University of Minnesota, Lake Itasca, MN, USA., Laas A; Centre for Limnology, Chair of Hydrobiology and Fishery, Institute of Agricultural and Environmental Sciences, Estonian University of Life- Sciences, Tartu, Estonia., Lepori F; Institute of Earth Sciences, University of Applied Sciences and Arts of Southern Switzerland, Mendrisio, Switzerland., Meier J; U.S. Geological Survey, Northern Prairie Wildlife Research Center, Jamestown, ND, USA., Palshin N; Northern Water Problems Institute, Karelian Research Centre RAS, Petrozavodsk, Russia., Peternell M; Department of Earth Sciences, University of Gothenburg, Gothenburg, Sweden., Pulkkanen M; Finnish Environment Institute, Jyväskylä, Finland., Rusak JA; Department of Biology, Queen's University, Kingston, ON, Canada.; Dorset Environmental Science Centre, Ontario Ministry of the Environment, Conservation and Parks, Dorset, ON, Canada., Sharma S; Department of Biology, York University, Toronto, ON, Canada., Wain D; 7 Lakes Alliance, Belgrade Lakes, ME, USA., Zdorovennov R; Northern Water Problems Institute, Karelian Research Centre RAS, Petrozavodsk, Russia.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2022 Aug 25; Vol. 13 (1), pp. 4974. Date of Electronic Publication: 2022 Aug 25.
DOI: 10.1038/s41467-022-32633-1
Abstrakt: 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).)
Databáze: MEDLINE
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