Landscape influences on climate‐related lake shrinkage at high latitudes
Abstract Climate‐related declines in lake area have been identified across circumpolar regions and have been characterized by substantial spatial heterogeneity. An improved understanding of the mechanisms underlying lake area trends is necessary to predict where change is most likely to occur and to...
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crwiley:10.1111/gcb.12196 2024-06-23T07:56:09+00:00 Landscape influences on climate‐related lake shrinkage at high latitudes Roach, Jennifer K. Griffith, Brad Verbyla, David 2013 http://dx.doi.org/10.1111/gcb.12196 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgcb.12196 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.12196 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Global Change Biology volume 19, issue 7, page 2276-2284 ISSN 1354-1013 1365-2486 journal-article 2013 crwiley https://doi.org/10.1111/gcb.12196 2024-06-13T04:24:16Z Abstract Climate‐related declines in lake area have been identified across circumpolar regions and have been characterized by substantial spatial heterogeneity. An improved understanding of the mechanisms underlying lake area trends is necessary to predict where change is most likely to occur and to identify implications for high latitude reservoirs of carbon. Here, using a population of ca. 2300 lakes with statistically significant increasing and decreasing lake area trends spanning longitudinal and latitudinal gradients of ca. 1000 km in A laska, we present evidence for a mechanism of lake area decline that involves the loss of surface water to groundwater systems. We show that lakes with significant declines in lake area were more likely to be located: (1) in burned areas; (2) on coarser, well‐drained soils; and (3) farther from rivers compared to lakes that were increasing. These results indicate that postfire processes such as permafrost degradation, which also results from a warming climate, may promote lake drainage, particularly in coarse‐textured soils and farther from rivers where overland flooding is less likely and downslope flow paths and negative hydraulic gradients between surface water and groundwater systems are more common. Movement of surface water to groundwater systems may lead to a deepening of subsurface flow paths and longer hydraulic residence time which has been linked to increased soil respiration and CO 2 release to the atmosphere. By quantifying relationships between statewide coarse resolution maps of landscape characteristics and spatially heterogeneous responses of lakes to environmental change, we provide a means to identify at‐risk lakes and landscapes and plan for a changing climate. Article in Journal/Newspaper permafrost Wiley Online Library Global Change Biology 19 7 2276 2284 |
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description |
Abstract Climate‐related declines in lake area have been identified across circumpolar regions and have been characterized by substantial spatial heterogeneity. An improved understanding of the mechanisms underlying lake area trends is necessary to predict where change is most likely to occur and to identify implications for high latitude reservoirs of carbon. Here, using a population of ca. 2300 lakes with statistically significant increasing and decreasing lake area trends spanning longitudinal and latitudinal gradients of ca. 1000 km in A laska, we present evidence for a mechanism of lake area decline that involves the loss of surface water to groundwater systems. We show that lakes with significant declines in lake area were more likely to be located: (1) in burned areas; (2) on coarser, well‐drained soils; and (3) farther from rivers compared to lakes that were increasing. These results indicate that postfire processes such as permafrost degradation, which also results from a warming climate, may promote lake drainage, particularly in coarse‐textured soils and farther from rivers where overland flooding is less likely and downslope flow paths and negative hydraulic gradients between surface water and groundwater systems are more common. Movement of surface water to groundwater systems may lead to a deepening of subsurface flow paths and longer hydraulic residence time which has been linked to increased soil respiration and CO 2 release to the atmosphere. By quantifying relationships between statewide coarse resolution maps of landscape characteristics and spatially heterogeneous responses of lakes to environmental change, we provide a means to identify at‐risk lakes and landscapes and plan for a changing climate. |
format |
Article in Journal/Newspaper |
author |
Roach, Jennifer K. Griffith, Brad Verbyla, David |
spellingShingle |
Roach, Jennifer K. Griffith, Brad Verbyla, David Landscape influences on climate‐related lake shrinkage at high latitudes |
author_facet |
Roach, Jennifer K. Griffith, Brad Verbyla, David |
author_sort |
Roach, Jennifer K. |
title |
Landscape influences on climate‐related lake shrinkage at high latitudes |
title_short |
Landscape influences on climate‐related lake shrinkage at high latitudes |
title_full |
Landscape influences on climate‐related lake shrinkage at high latitudes |
title_fullStr |
Landscape influences on climate‐related lake shrinkage at high latitudes |
title_full_unstemmed |
Landscape influences on climate‐related lake shrinkage at high latitudes |
title_sort |
landscape influences on climate‐related lake shrinkage at high latitudes |
publisher |
Wiley |
publishDate |
2013 |
url |
http://dx.doi.org/10.1111/gcb.12196 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgcb.12196 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.12196 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Global Change Biology volume 19, issue 7, page 2276-2284 ISSN 1354-1013 1365-2486 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/gcb.12196 |
container_title |
Global Change Biology |
container_volume |
19 |
container_issue |
7 |
container_start_page |
2276 |
op_container_end_page |
2284 |
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1802649047362699264 |