Ecosystem responses of shallow thermokarst lakes to climate-driven hydrological change: Insights from long-term monitoring of periphytic diatom community composition at Old Crow Flats (Yukon, Canada)
Shallow waterbodies are abundant in Arctic and subarctic landscapes where they provide productive wildlife habitat and hold cultural and socioeconomic importance for Indigenous communities. Their vulnerability to climate-driven hydrological and limnological changes enhances a need for long-term moni...
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ftpubmed:oai:pubmedcentral.nih.gov:10358572 2023-09-05T13:17:41+02:00 Ecosystem responses of shallow thermokarst lakes to climate-driven hydrological change: Insights from long-term monitoring of periphytic diatom community composition at Old Crow Flats (Yukon, Canada) Mohammed, Wathiq J MacDonald, Lauren A Thomas, Kathryn E McDonald, Ian Turner, Kevin W Wolfe, Brent B Hall, Roland I 2023-06-15 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10358572/ http://www.ncbi.nlm.nih.gov/pubmed/37321662 https://doi.org/10.1177/00368504231181452 en eng SAGE Publications http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10358572/ http://www.ncbi.nlm.nih.gov/pubmed/37321662 http://dx.doi.org/10.1177/00368504231181452 © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/This article is distributed under the terms of the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/by/4.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page (https://us.sagepub.com/en-us/nam/open-access-at-sage). Sci Prog Progress in Assessing Vulnerability of Freshwater Ecosystems Text 2023 ftpubmed https://doi.org/10.1177/00368504231181452 2023-08-13T00:44:37Z Shallow waterbodies are abundant in Arctic and subarctic landscapes where they provide productive wildlife habitat and hold cultural and socioeconomic importance for Indigenous communities. Their vulnerability to climate-driven hydrological and limnological changes enhances a need for long-term monitoring data capable of tracking aquatic ecosystem responses. Here, we evaluate biological and inferred physicochemical responses associated with a rise in rainfall-generated runoff and increasingly positive lake water balances in Old Crow Flats (OCF), a 5600 km(2) thermokarst landscape in northern Yukon. This is achieved by analyzing periphytic diatom community composition in biofilms accrued on artificial-substrate samplers at 14 lakes collected mostly annually during 2008–2019 CE. Results reveal that diatom communities at 10 of the 14 lakes converged toward a composition typical of lakes with rainfall-dominated input waters. These include six of nine lakes that were not initially dominated by rainfall input. The shifts in diatom community composition infer rise of lake-water pH and ionic content, and they reveal that northern shallow lake ecosystems are responsive to climate-driven increases in rainfall. Based on data generated during the 12 -year-long monitoring period, we conclude that lakes located centrally within OCF are most vulnerable to rapid climate-driven hydroecological change due to flat terrain, larger lake surface area, and sparse terrestrial vegetation, which provide less resistance to lake expansion, shoreline erosion, and sudden drainage. This information assists the local Indigenous community and natural resource stewardship agencies to anticipate changes to traditional food sources and inform adaptation options. Text Arctic Old Crow Subarctic Thermokarst Yukon PubMed Central (PMC) Arctic Yukon Canada Old Crow Flats ENVELOPE(-139.755,-139.755,68.083,68.083) Science Progress 106 2 |
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English |
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Progress in Assessing Vulnerability of Freshwater Ecosystems |
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Progress in Assessing Vulnerability of Freshwater Ecosystems Mohammed, Wathiq J MacDonald, Lauren A Thomas, Kathryn E McDonald, Ian Turner, Kevin W Wolfe, Brent B Hall, Roland I Ecosystem responses of shallow thermokarst lakes to climate-driven hydrological change: Insights from long-term monitoring of periphytic diatom community composition at Old Crow Flats (Yukon, Canada) |
topic_facet |
Progress in Assessing Vulnerability of Freshwater Ecosystems |
description |
Shallow waterbodies are abundant in Arctic and subarctic landscapes where they provide productive wildlife habitat and hold cultural and socioeconomic importance for Indigenous communities. Their vulnerability to climate-driven hydrological and limnological changes enhances a need for long-term monitoring data capable of tracking aquatic ecosystem responses. Here, we evaluate biological and inferred physicochemical responses associated with a rise in rainfall-generated runoff and increasingly positive lake water balances in Old Crow Flats (OCF), a 5600 km(2) thermokarst landscape in northern Yukon. This is achieved by analyzing periphytic diatom community composition in biofilms accrued on artificial-substrate samplers at 14 lakes collected mostly annually during 2008–2019 CE. Results reveal that diatom communities at 10 of the 14 lakes converged toward a composition typical of lakes with rainfall-dominated input waters. These include six of nine lakes that were not initially dominated by rainfall input. The shifts in diatom community composition infer rise of lake-water pH and ionic content, and they reveal that northern shallow lake ecosystems are responsive to climate-driven increases in rainfall. Based on data generated during the 12 -year-long monitoring period, we conclude that lakes located centrally within OCF are most vulnerable to rapid climate-driven hydroecological change due to flat terrain, larger lake surface area, and sparse terrestrial vegetation, which provide less resistance to lake expansion, shoreline erosion, and sudden drainage. This information assists the local Indigenous community and natural resource stewardship agencies to anticipate changes to traditional food sources and inform adaptation options. |
format |
Text |
author |
Mohammed, Wathiq J MacDonald, Lauren A Thomas, Kathryn E McDonald, Ian Turner, Kevin W Wolfe, Brent B Hall, Roland I |
author_facet |
Mohammed, Wathiq J MacDonald, Lauren A Thomas, Kathryn E McDonald, Ian Turner, Kevin W Wolfe, Brent B Hall, Roland I |
author_sort |
Mohammed, Wathiq J |
title |
Ecosystem responses of shallow thermokarst lakes to climate-driven hydrological change: Insights from long-term monitoring of periphytic diatom community composition at Old Crow Flats (Yukon, Canada) |
title_short |
Ecosystem responses of shallow thermokarst lakes to climate-driven hydrological change: Insights from long-term monitoring of periphytic diatom community composition at Old Crow Flats (Yukon, Canada) |
title_full |
Ecosystem responses of shallow thermokarst lakes to climate-driven hydrological change: Insights from long-term monitoring of periphytic diatom community composition at Old Crow Flats (Yukon, Canada) |
title_fullStr |
Ecosystem responses of shallow thermokarst lakes to climate-driven hydrological change: Insights from long-term monitoring of periphytic diatom community composition at Old Crow Flats (Yukon, Canada) |
title_full_unstemmed |
Ecosystem responses of shallow thermokarst lakes to climate-driven hydrological change: Insights from long-term monitoring of periphytic diatom community composition at Old Crow Flats (Yukon, Canada) |
title_sort |
ecosystem responses of shallow thermokarst lakes to climate-driven hydrological change: insights from long-term monitoring of periphytic diatom community composition at old crow flats (yukon, canada) |
publisher |
SAGE Publications |
publishDate |
2023 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10358572/ http://www.ncbi.nlm.nih.gov/pubmed/37321662 https://doi.org/10.1177/00368504231181452 |
long_lat |
ENVELOPE(-139.755,-139.755,68.083,68.083) |
geographic |
Arctic Yukon Canada Old Crow Flats |
geographic_facet |
Arctic Yukon Canada Old Crow Flats |
genre |
Arctic Old Crow Subarctic Thermokarst Yukon |
genre_facet |
Arctic Old Crow Subarctic Thermokarst Yukon |
op_source |
Sci Prog |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10358572/ http://www.ncbi.nlm.nih.gov/pubmed/37321662 http://dx.doi.org/10.1177/00368504231181452 |
op_rights |
© The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/This article is distributed under the terms of the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/by/4.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page (https://us.sagepub.com/en-us/nam/open-access-at-sage). |
op_doi |
https://doi.org/10.1177/00368504231181452 |
container_title |
Science Progress |
container_volume |
106 |
container_issue |
2 |
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1776198763581276160 |