Linking permafrost thaw to shifting biogeochemistry and food web resources in an arctic river
Abstract Rapidly, increasing air temperatures across the Arctic are thawing permafrost and exposing vast quantities of organic carbon, nitrogen, and phosphorus to microbial processing. Shifts in the absolute and relative supplies of these elements will likely alter patterns of ecosystem productivity...
Published in: | Global Change Biology |
---|---|
Main Authors: | , , , , , , , , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2018
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/gcb.14448 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgcb.14448 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.14448 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.14448 https://onlinelibrary.wiley.com/doi/am-pdf/10.1111/gcb.14448 |
id |
crwiley:10.1111/gcb.14448 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/gcb.14448 2024-06-23T07:49:44+00:00 Linking permafrost thaw to shifting biogeochemistry and food web resources in an arctic river Kendrick, Michael R. Huryn, Alexander D. Bowden, William B. Deegan, Linda A. Findlay, Robert H. Hershey, Anne E. Peterson, Bruce J. Beneš, Joshua P. Schuett, Elissa B. Directorate for Biological Sciences Division of Polar Programs 2018 http://dx.doi.org/10.1111/gcb.14448 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgcb.14448 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.14448 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.14448 https://onlinelibrary.wiley.com/doi/am-pdf/10.1111/gcb.14448 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor Global Change Biology volume 24, issue 12, page 5738-5750 ISSN 1354-1013 1365-2486 journal-article 2018 crwiley https://doi.org/10.1111/gcb.14448 2024-06-13T04:24:15Z Abstract Rapidly, increasing air temperatures across the Arctic are thawing permafrost and exposing vast quantities of organic carbon, nitrogen, and phosphorus to microbial processing. Shifts in the absolute and relative supplies of these elements will likely alter patterns of ecosystem productivity and change the way carbon and nutrients are delivered from upland areas to surface waters such as rivers and lakes. The ultra‐oligotrophic nature of surface waters across the Arctic renders these ecosystems particularly susceptible to changes in productivity and food web dynamics as permafrost thaw alters terrestrial‐aquatic linkages. The objectives of this study were to evaluate decadal‐scale patterns in surface water chemistry and assess potential implications of changing water chemistry to benthic organic matter and aquatic food webs. Data were collected from the upper Kuparuk River on the North Slope of Alaska by the U.S. National Science Foundation's Long‐Term Ecological Research program during 1978–2014. Analyses of these data show increases in stream water alkalinity and cation concentrations consistent with signatures of permafrost thaw. Changes are also documented for discharge‐corrected nitrate concentrations (+), discharge‐corrected dissolved organic carbon concentrations (−), total phosphorus concentrations (−), and δ 13 C isotope values of aquatic invertebrate consumers (−). These changes show that warming temperatures and thawing permafrost in the upland environment are leading to shifts in the supply of carbon and nutrients available to surface waters and consequently changing resources that support aquatic food webs. This demonstrates that physical, geochemical, and biological changes associated with warming permafrost are fundamentally altering linkages between upland and aquatic ecosystems in rapidly changing arctic environments. Article in Journal/Newspaper Arctic north slope permafrost Alaska Wiley Online Library Arctic Global Change Biology 24 12 5738 5750 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract Rapidly, increasing air temperatures across the Arctic are thawing permafrost and exposing vast quantities of organic carbon, nitrogen, and phosphorus to microbial processing. Shifts in the absolute and relative supplies of these elements will likely alter patterns of ecosystem productivity and change the way carbon and nutrients are delivered from upland areas to surface waters such as rivers and lakes. The ultra‐oligotrophic nature of surface waters across the Arctic renders these ecosystems particularly susceptible to changes in productivity and food web dynamics as permafrost thaw alters terrestrial‐aquatic linkages. The objectives of this study were to evaluate decadal‐scale patterns in surface water chemistry and assess potential implications of changing water chemistry to benthic organic matter and aquatic food webs. Data were collected from the upper Kuparuk River on the North Slope of Alaska by the U.S. National Science Foundation's Long‐Term Ecological Research program during 1978–2014. Analyses of these data show increases in stream water alkalinity and cation concentrations consistent with signatures of permafrost thaw. Changes are also documented for discharge‐corrected nitrate concentrations (+), discharge‐corrected dissolved organic carbon concentrations (−), total phosphorus concentrations (−), and δ 13 C isotope values of aquatic invertebrate consumers (−). These changes show that warming temperatures and thawing permafrost in the upland environment are leading to shifts in the supply of carbon and nutrients available to surface waters and consequently changing resources that support aquatic food webs. This demonstrates that physical, geochemical, and biological changes associated with warming permafrost are fundamentally altering linkages between upland and aquatic ecosystems in rapidly changing arctic environments. |
author2 |
Directorate for Biological Sciences Division of Polar Programs |
format |
Article in Journal/Newspaper |
author |
Kendrick, Michael R. Huryn, Alexander D. Bowden, William B. Deegan, Linda A. Findlay, Robert H. Hershey, Anne E. Peterson, Bruce J. Beneš, Joshua P. Schuett, Elissa B. |
spellingShingle |
Kendrick, Michael R. Huryn, Alexander D. Bowden, William B. Deegan, Linda A. Findlay, Robert H. Hershey, Anne E. Peterson, Bruce J. Beneš, Joshua P. Schuett, Elissa B. Linking permafrost thaw to shifting biogeochemistry and food web resources in an arctic river |
author_facet |
Kendrick, Michael R. Huryn, Alexander D. Bowden, William B. Deegan, Linda A. Findlay, Robert H. Hershey, Anne E. Peterson, Bruce J. Beneš, Joshua P. Schuett, Elissa B. |
author_sort |
Kendrick, Michael R. |
title |
Linking permafrost thaw to shifting biogeochemistry and food web resources in an arctic river |
title_short |
Linking permafrost thaw to shifting biogeochemistry and food web resources in an arctic river |
title_full |
Linking permafrost thaw to shifting biogeochemistry and food web resources in an arctic river |
title_fullStr |
Linking permafrost thaw to shifting biogeochemistry and food web resources in an arctic river |
title_full_unstemmed |
Linking permafrost thaw to shifting biogeochemistry and food web resources in an arctic river |
title_sort |
linking permafrost thaw to shifting biogeochemistry and food web resources in an arctic river |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1111/gcb.14448 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgcb.14448 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.14448 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.14448 https://onlinelibrary.wiley.com/doi/am-pdf/10.1111/gcb.14448 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic north slope permafrost Alaska |
genre_facet |
Arctic north slope permafrost Alaska |
op_source |
Global Change Biology volume 24, issue 12, page 5738-5750 ISSN 1354-1013 1365-2486 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/gcb.14448 |
container_title |
Global Change Biology |
container_volume |
24 |
container_issue |
12 |
container_start_page |
5738 |
op_container_end_page |
5750 |
_version_ |
1802640412070903808 |