Understanding the Effects of Climate Change via Disturbance on Pristine Arctic Lakes—Multitrophic Level Response and Recovery to a 12-Yr, Low-Level Fertilization Experiment
Effects of climate change-driven disturbance on lake ecosystems can be subtle; indirect effects include increased nutrient loading that could impact ecosystem function. We designed a low-level fertilization experiment to mimic persistent, climate change-driven disturbances (deeper thaw, greater weat...
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ftutahsudc:oai:digitalcommons.usu.edu:wats_stures-1049 2023-05-15T14:52:03+02:00 Understanding the Effects of Climate Change via Disturbance on Pristine Arctic Lakes—Multitrophic Level Response and Recovery to a 12-Yr, Low-Level Fertilization Experiment Budy, Phaedra Pennock, Casey A. Giblin, Anne E. Luecke, Chris White, Daniel L. Kling, George W. John Wiley & Sons, Inc. 2021-08-02T07:00:00Z application/pdf https://digitalcommons.usu.edu/wats_stures/50 https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1049&context=wats_stures unknown Hosted by Utah State University Libraries https://digitalcommons.usu.edu/wats_stures/50 https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1049&context=wats_stures Copyright for this work is held by the author. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user. For more information contact the Institutional Repository Librarian at digitalcommons@usu.edu. http://creativecommons.org/licenses/by-nc-nd/4.0/ PDM CC-BY-NC-ND Watershed Sciences Student Research lake ecosystems arctic lakes climate change fertilization Ecology and Evolutionary Biology Environmental Sciences Physical Sciences and Mathematics text 2021 ftutahsudc 2022-03-07T22:06:37Z Effects of climate change-driven disturbance on lake ecosystems can be subtle; indirect effects include increased nutrient loading that could impact ecosystem function. We designed a low-level fertilization experiment to mimic persistent, climate change-driven disturbances (deeper thaw, greater weathering, or thermokarst failure) delivering nutrients to arctic lakes. We measured responses of pelagic trophic levels over 12 yr in a fertilized deep lake with fish and a shallow fishless lake, compared to paired reference lakes, and monitored recovery for 6 yr. Relative to prefertilization in the deep lake, we observed a maximum pelagic response in chl a (+201%), dissolved oxygen (DO, −43%), and zooplankton biomass (+88%) during the fertilization period (2001–2012). Other responses to fertilization, such as water transparency and fish relative abundance, were delayed, but both ultimately declined. Phyto- and zooplankton biomass and community composition shifted with fertilization. The effects of fertilization were less pronounced in the paired shallow lakes, because of a natural thermokarst failure likely impacting the reference lake. In the deep lake there was (a) moderate resistance to change in ecosystem functions at all trophic levels, (b) eventual responses were often nonlinear, and (c) postfertilization recovery (return) times were most rapid at the base of the food web (2–4 yr) while higher trophic levels failed to recover after 6 yr. The timing and magnitude of responses to fertilization in these arctic lakes were similar to responses in other lakes, suggesting indirect effects of climate change that modify nutrient inputs may affect many lakes in the future. Text Arctic Climate change Thermokarst Zooplankton Utah State University: DigitalCommons@USU Arctic |
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Open Polar |
collection |
Utah State University: DigitalCommons@USU |
op_collection_id |
ftutahsudc |
language |
unknown |
topic |
lake ecosystems arctic lakes climate change fertilization Ecology and Evolutionary Biology Environmental Sciences Physical Sciences and Mathematics |
spellingShingle |
lake ecosystems arctic lakes climate change fertilization Ecology and Evolutionary Biology Environmental Sciences Physical Sciences and Mathematics Budy, Phaedra Pennock, Casey A. Giblin, Anne E. Luecke, Chris White, Daniel L. Kling, George W. Understanding the Effects of Climate Change via Disturbance on Pristine Arctic Lakes—Multitrophic Level Response and Recovery to a 12-Yr, Low-Level Fertilization Experiment |
topic_facet |
lake ecosystems arctic lakes climate change fertilization Ecology and Evolutionary Biology Environmental Sciences Physical Sciences and Mathematics |
description |
Effects of climate change-driven disturbance on lake ecosystems can be subtle; indirect effects include increased nutrient loading that could impact ecosystem function. We designed a low-level fertilization experiment to mimic persistent, climate change-driven disturbances (deeper thaw, greater weathering, or thermokarst failure) delivering nutrients to arctic lakes. We measured responses of pelagic trophic levels over 12 yr in a fertilized deep lake with fish and a shallow fishless lake, compared to paired reference lakes, and monitored recovery for 6 yr. Relative to prefertilization in the deep lake, we observed a maximum pelagic response in chl a (+201%), dissolved oxygen (DO, −43%), and zooplankton biomass (+88%) during the fertilization period (2001–2012). Other responses to fertilization, such as water transparency and fish relative abundance, were delayed, but both ultimately declined. Phyto- and zooplankton biomass and community composition shifted with fertilization. The effects of fertilization were less pronounced in the paired shallow lakes, because of a natural thermokarst failure likely impacting the reference lake. In the deep lake there was (a) moderate resistance to change in ecosystem functions at all trophic levels, (b) eventual responses were often nonlinear, and (c) postfertilization recovery (return) times were most rapid at the base of the food web (2–4 yr) while higher trophic levels failed to recover after 6 yr. The timing and magnitude of responses to fertilization in these arctic lakes were similar to responses in other lakes, suggesting indirect effects of climate change that modify nutrient inputs may affect many lakes in the future. |
author2 |
John Wiley & Sons, Inc. |
format |
Text |
author |
Budy, Phaedra Pennock, Casey A. Giblin, Anne E. Luecke, Chris White, Daniel L. Kling, George W. |
author_facet |
Budy, Phaedra Pennock, Casey A. Giblin, Anne E. Luecke, Chris White, Daniel L. Kling, George W. |
author_sort |
Budy, Phaedra |
title |
Understanding the Effects of Climate Change via Disturbance on Pristine Arctic Lakes—Multitrophic Level Response and Recovery to a 12-Yr, Low-Level Fertilization Experiment |
title_short |
Understanding the Effects of Climate Change via Disturbance on Pristine Arctic Lakes—Multitrophic Level Response and Recovery to a 12-Yr, Low-Level Fertilization Experiment |
title_full |
Understanding the Effects of Climate Change via Disturbance on Pristine Arctic Lakes—Multitrophic Level Response and Recovery to a 12-Yr, Low-Level Fertilization Experiment |
title_fullStr |
Understanding the Effects of Climate Change via Disturbance on Pristine Arctic Lakes—Multitrophic Level Response and Recovery to a 12-Yr, Low-Level Fertilization Experiment |
title_full_unstemmed |
Understanding the Effects of Climate Change via Disturbance on Pristine Arctic Lakes—Multitrophic Level Response and Recovery to a 12-Yr, Low-Level Fertilization Experiment |
title_sort |
understanding the effects of climate change via disturbance on pristine arctic lakes—multitrophic level response and recovery to a 12-yr, low-level fertilization experiment |
publisher |
Hosted by Utah State University Libraries |
publishDate |
2021 |
url |
https://digitalcommons.usu.edu/wats_stures/50 https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1049&context=wats_stures |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Thermokarst Zooplankton |
genre_facet |
Arctic Climate change Thermokarst Zooplankton |
op_source |
Watershed Sciences Student Research |
op_relation |
https://digitalcommons.usu.edu/wats_stures/50 https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1049&context=wats_stures |
op_rights |
Copyright for this work is held by the author. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user. For more information contact the Institutional Repository Librarian at digitalcommons@usu.edu. http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_rightsnorm |
PDM CC-BY-NC-ND |
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1766323177117450240 |