Model responses to CO(2) and warming are underestimated without explicit representation of Arctic small‐mammal grazing
We use a simple model of coupled carbon and nitrogen cycles in terrestrial ecosystems to examine how “explicitly representing grazers” vs. “having grazer effects implicitly aggregated in with other biogeochemical processes in the model” alters predicted responses to elevated carbon dioxide and warmi...
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2021
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9285540/ http://www.ncbi.nlm.nih.gov/pubmed/34657358 https://doi.org/10.1002/eap.2478 |
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ftpubmed:oai:pubmedcentral.nih.gov:9285540 2023-05-15T15:05:22+02:00 Model responses to CO(2) and warming are underestimated without explicit representation of Arctic small‐mammal grazing Rastetter, Edward B. Griffin, Kevin L. Rowe, Rebecca J. Gough, Laura McLaren, Jennie R. Boelman, Natalie T. 2021-12-08 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9285540/ http://www.ncbi.nlm.nih.gov/pubmed/34657358 https://doi.org/10.1002/eap.2478 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9285540/ http://www.ncbi.nlm.nih.gov/pubmed/34657358 http://dx.doi.org/10.1002/eap.2478 © 2021 The Authors. Ecological Applications published by Wiley Periodicals LLC on behalf of The Ecological Society of America. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY Ecol Appl Articles Text 2021 ftpubmed https://doi.org/10.1002/eap.2478 2022-07-31T01:40:54Z We use a simple model of coupled carbon and nitrogen cycles in terrestrial ecosystems to examine how “explicitly representing grazers” vs. “having grazer effects implicitly aggregated in with other biogeochemical processes in the model” alters predicted responses to elevated carbon dioxide and warming. The aggregated approach can affect model predictions because grazer‐mediated processes can respond differently to changes in climate compared with the processes with which they are typically aggregated. We use small‐mammal grazers in a tundra as an example and find that the typical three‐to‐four‐year cycling frequency is too fast for the effects of cycle peaks and troughs to be fully manifested in the ecosystem biogeochemistry. We conclude that implicitly aggregating the effects of small‐mammal grazers with other processes results in an underestimation of ecosystem response to climate change, relative to estimations in which the grazer effects are explicitly represented. The magnitude of this underestimation increases with grazer density. We therefore recommend that grazing effects be incorporated explicitly when applying models of ecosystem response to global change. Text Arctic Climate change Tundra PubMed Central (PMC) Arctic Ecological Applications 32 1 |
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Articles Rastetter, Edward B. Griffin, Kevin L. Rowe, Rebecca J. Gough, Laura McLaren, Jennie R. Boelman, Natalie T. Model responses to CO(2) and warming are underestimated without explicit representation of Arctic small‐mammal grazing |
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Articles |
description |
We use a simple model of coupled carbon and nitrogen cycles in terrestrial ecosystems to examine how “explicitly representing grazers” vs. “having grazer effects implicitly aggregated in with other biogeochemical processes in the model” alters predicted responses to elevated carbon dioxide and warming. The aggregated approach can affect model predictions because grazer‐mediated processes can respond differently to changes in climate compared with the processes with which they are typically aggregated. We use small‐mammal grazers in a tundra as an example and find that the typical three‐to‐four‐year cycling frequency is too fast for the effects of cycle peaks and troughs to be fully manifested in the ecosystem biogeochemistry. We conclude that implicitly aggregating the effects of small‐mammal grazers with other processes results in an underestimation of ecosystem response to climate change, relative to estimations in which the grazer effects are explicitly represented. The magnitude of this underestimation increases with grazer density. We therefore recommend that grazing effects be incorporated explicitly when applying models of ecosystem response to global change. |
format |
Text |
author |
Rastetter, Edward B. Griffin, Kevin L. Rowe, Rebecca J. Gough, Laura McLaren, Jennie R. Boelman, Natalie T. |
author_facet |
Rastetter, Edward B. Griffin, Kevin L. Rowe, Rebecca J. Gough, Laura McLaren, Jennie R. Boelman, Natalie T. |
author_sort |
Rastetter, Edward B. |
title |
Model responses to CO(2) and warming are underestimated without explicit representation of Arctic small‐mammal grazing |
title_short |
Model responses to CO(2) and warming are underestimated without explicit representation of Arctic small‐mammal grazing |
title_full |
Model responses to CO(2) and warming are underestimated without explicit representation of Arctic small‐mammal grazing |
title_fullStr |
Model responses to CO(2) and warming are underestimated without explicit representation of Arctic small‐mammal grazing |
title_full_unstemmed |
Model responses to CO(2) and warming are underestimated without explicit representation of Arctic small‐mammal grazing |
title_sort |
model responses to co(2) and warming are underestimated without explicit representation of arctic small‐mammal grazing |
publisher |
John Wiley and Sons Inc. |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9285540/ http://www.ncbi.nlm.nih.gov/pubmed/34657358 https://doi.org/10.1002/eap.2478 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Tundra |
genre_facet |
Arctic Climate change Tundra |
op_source |
Ecol Appl |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9285540/ http://www.ncbi.nlm.nih.gov/pubmed/34657358 http://dx.doi.org/10.1002/eap.2478 |
op_rights |
© 2021 The Authors. Ecological Applications published by Wiley Periodicals LLC on behalf of The Ecological Society of America. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/eap.2478 |
container_title |
Ecological Applications |
container_volume |
32 |
container_issue |
1 |
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1766337085878304768 |