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Ecology under lake ice

Hampton, SE; Galloway, AWE; Powers, SM; Ozersky, T; Woo, KH; Batt, RD; Labou, SG; ... Xenopoulos, MA; + view all (2017) Ecology under lake ice. Ecology Letters , 20 (1) pp. 98-111. 10.1111/ele.12699. Green open access

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Abstract

Winter conditions are rapidly changing in temperate ecosystems, particularly for those that experience periods of snow and ice cover. Relatively little is known of winter ecology in these systems, due to a historical research focus on summer ‘growing seasons’. We executed the first global quantitative synthesis on under-ice lake ecology, including 36 abiotic and biotic variables from 42 research groups and 101 lakes, examining seasonal differences and connections as well as how seasonal differences vary with geophysical factors. Plankton were more abundant under ice than expected; mean winter values were 43.2% of summer values for chlorophyll a, 15.8% of summer phytoplankton biovolume and 25.3% of summer zooplankton density. Dissolved nitrogen concentrations were typically higher during winter, and these differences were exaggerated in smaller lakes. Lake size also influenced winter-summer patterns for dissolved organic carbon (DOC), with higher winter DOC in smaller lakes. At coarse levels of taxonomic aggregation, phytoplankton and zooplankton community composition showed few systematic differences between seasons, although literature suggests that seasonal differences are frequently lake-specific, species-specific, or occur at the level of functional group. Within the subset of lakes that had longer time series, winter influenced the subsequent summer for some nutrient variables and zooplankton biomass.

Type: Article
Title: Ecology under lake ice
Open access status: An open access version is available from UCL Discovery
DOI: 10.1111/ele.12699
Publisher version: http://dx.doi.org/10.1111/ele.12699
Language: English
Additional information: © 2016 The Authors. Ecology Letters published by CNRS and John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
Keywords: Science & Technology, Life Sciences & Biomedicine, Ecology, Environmental Sciences & Ecology, Aquatic Ecosystem, Data Synthesis, Freshwater, Lake, Limnology, Long-Term, Plankton, Seasonal, Time Series, Winter Ecology, North-Atlantic Oscillation, Fresh-Water Lakes, Under-Ice, Climate-Change, Covered Lakes, Aulacoseira-Baicalensis, Seasonal Succession, Plankton Succession, Community Structure, Winter Limnology
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL SLASH
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Dept of Geography
URI: https://discovery.ucl.ac.uk/id/eprint/1535931
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