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Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Differential responses of ecotypes to climate in a ubiquitous arctic sedge: implications for future ecosystem C cycling
Author(s): Curasi, Salvatore R
Parker, Thomas C
Rocha, Adrian V
Moody, Michael L
Tang, Jianwu
Fetcher, Ned
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Keywords: climate change
local adaptation
arctic tundra
carbon cycle
Eriophorum vaginatum
reciprocal transplant
gross primary productivity (GPP)
Issue Date: Jul-2019
Date Deposited: 9-Apr-2019
Citation: Curasi SR, Parker TC, Rocha AV, Moody ML, Tang J & Fetcher N (2019) Differential responses of ecotypes to climate in a ubiquitous arctic sedge: implications for future ecosystem C cycling. New Phytologist, 223 (1), pp. 180-192.
Abstract: The response of vegetation to climate change has implications for the carbon cycle and global climate. It is frequently assumed that a species responds uniformly across its range to climate change. However, ecotypes—locally adapted populations within a species—display differences in traits, which may affect their gross primary productivity (GPP) and response to climate change. To determine if ecotypes are important for understanding the response of ecosystem productivity to climate we measured and modeled growing season GPP in reciprocally transplanted and experimentally warmed ecotypes of the abundant arctic sedge Eriophorum vaginatum. Transplanted northern ecotypes displayed home site advantage in GPP that was associated with differences in leaf area index. Southern ecotypes exhibited a greater response in GPP when transplanted. The results demonstrate that ecotypic differentiation can impact the morphology and function of vegetation with implications for carbon cycling. Moreover they suggest that ecotypic control of GPP may limit the response of ecosystem productivity to climate change. This investigation shows that ecotypes play a substantial role in determining GPP and its response to climate. These results have implications for understanding annual to decadal carbon cycling where ecotypes could influence ecosystem function and vegetation feedbacks to climate change.
DOI Link: 10.1111/nph.15790
Rights: This item has been embargoed for a period. During the embargo please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. This is the peer reviewed version of the following article: Curasi, S. R., Parker, T. C., Rocha, A. V., Moody, M. L., Tang, J. and Fetcher, N. (2019), Differential responses of ecotypes to climate in a ubiquitous Arctic sedge: implications for future ecosystem C cycling. New Phytologist, 223: 180-192. doi:10.1111/nph.15790, which has been published in final form at This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for self-archiving.

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