Combined effects of early snowmelt and climate warming on mountain lake temperatures and fish energetics
Mountain regions are experiencing some of the highest air temperature increases and ice cover decreases. However, few studies have examined the effects of climate warming and earlier snowmelt on mountain lake thermal characteristics and energetic implications for fish. We assessed potential climate-...
Published in: | Arctic, Antarctic, and Alpine Research |
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Language: | English |
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Taylor & Francis Group
2020
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Online Access: | https://doi.org/10.1080/15230430.2020.1741199 https://doaj.org/article/22458acc04714f9a83d3929743f9bc19 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:22458acc04714f9a83d3929743f9bc19 2023-05-15T14:14:25+02:00 Combined effects of early snowmelt and climate warming on mountain lake temperatures and fish energetics Kyle R. Christianson Brett M. Johnson 2020-01-01 https://doi.org/10.1080/15230430.2020.1741199 https://doaj.org/article/22458acc04714f9a83d3929743f9bc19 en eng Taylor & Francis Group 1523-0430 1938-4246 doi:10.1080/15230430.2020.1741199 https://doaj.org/article/22458acc04714f9a83d3929743f9bc19 undefined Arctic, Antarctic, and Alpine Research, Vol 52, Iss 1, Pp 130-145 (2020) climate change general lake model snowpack high elevation lakes cutthroat trout envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2020 fttriple https://doi.org/10.1080/15230430.2020.1741199 2023-01-22T17:53:03Z Mountain regions are experiencing some of the highest air temperature increases and ice cover decreases. However, few studies have examined the effects of climate warming and earlier snowmelt on mountain lake thermal characteristics and energetic implications for fish. We assessed potential climate-induced thermal changes and energetic consequences for cutthroat trout (Oncorhynchus clarkii spp.) and brook trout (Salvelinus fontinalis) in the Southern Rocky Mountains, United States. We found that summer growing degree days increased by an average 21 percent with 2°C air warming and 43 percent with 5°C air warming. But earlier snowmelt increased growing degree days by an average 48 percent. The average maintenance ration with 2°C and 5°C warming increased respectively by 13.8 and 21.9 percent for cutthroat trout and 23.8 and 37.4 percent for brook trout. The average increase in food required with earlier snowmelt was 43.4 percent for cutthroat trout and 52.3 percent for brook trout. Thus, earlier snowmelt can have a greater effect on fish energy requirements than a 5°C rise in air temperatures. Snowmelt recession together with a 5°C air temperature rise could more than double food requirements for fish to maintain constant body weight. If lake productivity increases with these climatic changes, then trout growth could improve; otherwise, energetic demands may result in lower fish growth. Article in Journal/Newspaper Antarctic and Alpine Research Arctic Unknown Arctic, Antarctic, and Alpine Research 52 1 130 145 |
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Open Polar |
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language |
English |
topic |
climate change general lake model snowpack high elevation lakes cutthroat trout envir geo |
spellingShingle |
climate change general lake model snowpack high elevation lakes cutthroat trout envir geo Kyle R. Christianson Brett M. Johnson Combined effects of early snowmelt and climate warming on mountain lake temperatures and fish energetics |
topic_facet |
climate change general lake model snowpack high elevation lakes cutthroat trout envir geo |
description |
Mountain regions are experiencing some of the highest air temperature increases and ice cover decreases. However, few studies have examined the effects of climate warming and earlier snowmelt on mountain lake thermal characteristics and energetic implications for fish. We assessed potential climate-induced thermal changes and energetic consequences for cutthroat trout (Oncorhynchus clarkii spp.) and brook trout (Salvelinus fontinalis) in the Southern Rocky Mountains, United States. We found that summer growing degree days increased by an average 21 percent with 2°C air warming and 43 percent with 5°C air warming. But earlier snowmelt increased growing degree days by an average 48 percent. The average maintenance ration with 2°C and 5°C warming increased respectively by 13.8 and 21.9 percent for cutthroat trout and 23.8 and 37.4 percent for brook trout. The average increase in food required with earlier snowmelt was 43.4 percent for cutthroat trout and 52.3 percent for brook trout. Thus, earlier snowmelt can have a greater effect on fish energy requirements than a 5°C rise in air temperatures. Snowmelt recession together with a 5°C air temperature rise could more than double food requirements for fish to maintain constant body weight. If lake productivity increases with these climatic changes, then trout growth could improve; otherwise, energetic demands may result in lower fish growth. |
format |
Article in Journal/Newspaper |
author |
Kyle R. Christianson Brett M. Johnson |
author_facet |
Kyle R. Christianson Brett M. Johnson |
author_sort |
Kyle R. Christianson |
title |
Combined effects of early snowmelt and climate warming on mountain lake temperatures and fish energetics |
title_short |
Combined effects of early snowmelt and climate warming on mountain lake temperatures and fish energetics |
title_full |
Combined effects of early snowmelt and climate warming on mountain lake temperatures and fish energetics |
title_fullStr |
Combined effects of early snowmelt and climate warming on mountain lake temperatures and fish energetics |
title_full_unstemmed |
Combined effects of early snowmelt and climate warming on mountain lake temperatures and fish energetics |
title_sort |
combined effects of early snowmelt and climate warming on mountain lake temperatures and fish energetics |
publisher |
Taylor & Francis Group |
publishDate |
2020 |
url |
https://doi.org/10.1080/15230430.2020.1741199 https://doaj.org/article/22458acc04714f9a83d3929743f9bc19 |
genre |
Antarctic and Alpine Research Arctic |
genre_facet |
Antarctic and Alpine Research Arctic |
op_source |
Arctic, Antarctic, and Alpine Research, Vol 52, Iss 1, Pp 130-145 (2020) |
op_relation |
1523-0430 1938-4246 doi:10.1080/15230430.2020.1741199 https://doaj.org/article/22458acc04714f9a83d3929743f9bc19 |
op_rights |
undefined |
op_doi |
https://doi.org/10.1080/15230430.2020.1741199 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
52 |
container_issue |
1 |
container_start_page |
130 |
op_container_end_page |
145 |
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1766286886948569088 |