Lake trout ( Salvelinus namaycush) otoliths indicate effects of climate and lake morphology on growth patterns in Arctic lakes
Abstract Climate change is occurring rapidly in the Arctic, and an improved understanding of the response of aquatic biota and ecosystems will be important for this data‐limited region. Here, we applied biochronology techniques and mixed‐effects modelling to assess relationships among growth increme...
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crwiley:10.1111/eff.12678 2024-09-15T18:02:13+00:00 Lake trout ( Salvelinus namaycush) otoliths indicate effects of climate and lake morphology on growth patterns in Arctic lakes Torvinen, Eric S. Falke, Jeffrey A. Arp, Christopher D. Jones, Benjamin M. Whitman, Matthew S. Zimmerman, Christian E. 2022 http://dx.doi.org/10.1111/eff.12678 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eff.12678 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/eff.12678 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ecology of Freshwater Fish volume 32, issue 1, page 166-180 ISSN 0906-6691 1600-0633 journal-article 2022 crwiley https://doi.org/10.1111/eff.12678 2024-07-02T04:10:59Z Abstract Climate change is occurring rapidly in the Arctic, and an improved understanding of the response of aquatic biota and ecosystems will be important for this data‐limited region. Here, we applied biochronology techniques and mixed‐effects modelling to assess relationships among growth increments found on lake trout ( Salvelinus namaycush ) otoliths ( N = 49) captured from 13 lakes on the Arctic Coastal Plain of northern Alaska, observed and modelled climate patterns, and individual‐level fish and lake characteristics. We found that annual growth varied by year, fish growth slowed significantly as individuals aged, and females grew faster than males. Lake trout had higher growth in flow‐through lakes relative to lakes that were perennially or seasonally connected. Annual growth was positively correlated with observed air temperature measurements from a local weather station for the period 1998–2014, but no clear warming trend was evident for this period. Modelled August air temperatures from 1978–2014 predicted lake trout annual growth (root mean squared error = 0.045 mm) and indicated increasing temperatures and annual lake trout growth over the period 1950–2014. This study demonstrated that biochronology techniques can reconstruct recent climate patterns and provide a better understanding of trends in Arctic lake ecosystems under a changing climate. Article in Journal/Newspaper Climate change Alaska Wiley Online Library Ecology of Freshwater Fish 32 1 166 180 |
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Wiley Online Library |
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English |
description |
Abstract Climate change is occurring rapidly in the Arctic, and an improved understanding of the response of aquatic biota and ecosystems will be important for this data‐limited region. Here, we applied biochronology techniques and mixed‐effects modelling to assess relationships among growth increments found on lake trout ( Salvelinus namaycush ) otoliths ( N = 49) captured from 13 lakes on the Arctic Coastal Plain of northern Alaska, observed and modelled climate patterns, and individual‐level fish and lake characteristics. We found that annual growth varied by year, fish growth slowed significantly as individuals aged, and females grew faster than males. Lake trout had higher growth in flow‐through lakes relative to lakes that were perennially or seasonally connected. Annual growth was positively correlated with observed air temperature measurements from a local weather station for the period 1998–2014, but no clear warming trend was evident for this period. Modelled August air temperatures from 1978–2014 predicted lake trout annual growth (root mean squared error = 0.045 mm) and indicated increasing temperatures and annual lake trout growth over the period 1950–2014. This study demonstrated that biochronology techniques can reconstruct recent climate patterns and provide a better understanding of trends in Arctic lake ecosystems under a changing climate. |
format |
Article in Journal/Newspaper |
author |
Torvinen, Eric S. Falke, Jeffrey A. Arp, Christopher D. Jones, Benjamin M. Whitman, Matthew S. Zimmerman, Christian E. |
spellingShingle |
Torvinen, Eric S. Falke, Jeffrey A. Arp, Christopher D. Jones, Benjamin M. Whitman, Matthew S. Zimmerman, Christian E. Lake trout ( Salvelinus namaycush) otoliths indicate effects of climate and lake morphology on growth patterns in Arctic lakes |
author_facet |
Torvinen, Eric S. Falke, Jeffrey A. Arp, Christopher D. Jones, Benjamin M. Whitman, Matthew S. Zimmerman, Christian E. |
author_sort |
Torvinen, Eric S. |
title |
Lake trout ( Salvelinus namaycush) otoliths indicate effects of climate and lake morphology on growth patterns in Arctic lakes |
title_short |
Lake trout ( Salvelinus namaycush) otoliths indicate effects of climate and lake morphology on growth patterns in Arctic lakes |
title_full |
Lake trout ( Salvelinus namaycush) otoliths indicate effects of climate and lake morphology on growth patterns in Arctic lakes |
title_fullStr |
Lake trout ( Salvelinus namaycush) otoliths indicate effects of climate and lake morphology on growth patterns in Arctic lakes |
title_full_unstemmed |
Lake trout ( Salvelinus namaycush) otoliths indicate effects of climate and lake morphology on growth patterns in Arctic lakes |
title_sort |
lake trout ( salvelinus namaycush) otoliths indicate effects of climate and lake morphology on growth patterns in arctic lakes |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1111/eff.12678 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eff.12678 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/eff.12678 |
genre |
Climate change Alaska |
genre_facet |
Climate change Alaska |
op_source |
Ecology of Freshwater Fish volume 32, issue 1, page 166-180 ISSN 0906-6691 1600-0633 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/eff.12678 |
container_title |
Ecology of Freshwater Fish |
container_volume |
32 |
container_issue |
1 |
container_start_page |
166 |
op_container_end_page |
180 |
_version_ |
1810439649893548032 |