Collaborative Research: An exploration of the direct and indirect effects of climatic warming on arctic lake ecosystems, Fog Lakes, Alaska, 2014-2021 ...
We attempted to experimentally warm an arctic whole lake to mimic the effects of on-going climate warming on food web and whole lake ecosystem process and function. The goals were to increase water temperature by up to 4°C (celsius), deepen epilimnion (warmer surface water layer) by up 2 meters (m),...
| Main Authors: | , , , |
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| Format: | Dataset |
| Language: | English |
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NSF Arctic Data Center
2023
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.18739/a2ht2gd3g https://arcticdata.io/catalog/view/doi:10.18739/A2HT2GD3G |
| Summary: | We attempted to experimentally warm an arctic whole lake to mimic the effects of on-going climate warming on food web and whole lake ecosystem process and function. The goals were to increase water temperature by up to 4°C (celsius), deepen epilimnion (warmer surface water layer) by up 2 meters (m), and delay ice-on by up to 2 weeks. Logistically this proved very challenging, and took a year or so to figure out the mechanics. By 2018, we had successfully warmed lake Fog 1, with 44 days of heating, a 3°C warmer, deeper epilimnion that mixed 15 days later. We were able to use our lake temperature and warming data to improve upon our ability to simulate lake mixing processes, and were able to predict the lake thermal response to the lake warming manipulation. Those results provide a more complete understanding of lake thermal processes in arctic freshwater lake systems and how they will respond to predicted future warming. For fish growth, one of our primary response variables, we detected an interaction in ... |
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