Range shifts in a foundation sedge potentially induce large Arctic ecosystem carbon losses and gains
Foundation species have disproportionately large impacts on ecosystem structure and function. As a result, future changes to their distribution may be important determinants of ecosystem carbon (C) cycling in a warmer world. We assessed the role of a foundation tussock sedge ( Eriophorum vaginatum )...
Published in: | Environmental Research Letters |
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Online Access: | https://doi.org/10.1088/1748-9326/ac6005 https://doaj.org/article/45804bdfe0f548b2a1fb3c53c880c967 |
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ftdoajarticles:oai:doaj.org/article:45804bdfe0f548b2a1fb3c53c880c967 2023-09-05T13:16:55+02:00 Range shifts in a foundation sedge potentially induce large Arctic ecosystem carbon losses and gains Salvatore R Curasi Ned Fetcher Rebecca E Hewitt Peter M Lafleur Michael M Loranty Michelle C Mack Jeremy L May Isla H Myers-Smith Susan M Natali Steven F Oberbauer Thomas C Parker Oliver Sonnentag Sergio A Vargas Zesati Stan D Wullschleger Adrian V Rocha 2022-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/ac6005 https://doaj.org/article/45804bdfe0f548b2a1fb3c53c880c967 EN eng IOP Publishing https://doi.org/10.1088/1748-9326/ac6005 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/ac6005 1748-9326 https://doaj.org/article/45804bdfe0f548b2a1fb3c53c880c967 Environmental Research Letters, Vol 17, Iss 4, p 045024 (2022) Arctic tundra carbon cycle climate change Eriophorum vaginatum carbon stocks Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2022 ftdoajarticles https://doi.org/10.1088/1748-9326/ac6005 2023-08-13T00:36:42Z Foundation species have disproportionately large impacts on ecosystem structure and function. As a result, future changes to their distribution may be important determinants of ecosystem carbon (C) cycling in a warmer world. We assessed the role of a foundation tussock sedge ( Eriophorum vaginatum ) as a climatically vulnerable C stock using field data, a machine learning ecological niche model, and an ensemble of terrestrial biosphere models (TBMs). Field data indicated that tussock density has decreased by ∼0.97 tussocks per m ^2 over the past ∼38 years on Alaska’s North Slope from ∼1981 to 2019. This declining trend is concerning because tussocks are a large Arctic C stock, which enhances soil organic layer C stocks by 6.9% on average and represents 745 Tg C across our study area. By 2100, we project that changes in tussock density may decrease the tussock C stock by 41% in regions where tussocks are currently abundant (e.g. −0.8 tussocks per m ^2 and −85 Tg C on the North Slope) and may increase the tussock C stock by 46% in regions where tussocks are currently scarce (e.g. +0.9 tussocks per m ^2 and +81 Tg C on Victoria Island). These climate-induced changes to the tussock C stock were comparable to, but sometimes opposite in sign, to vegetation C stock changes predicted by an ensemble of TBMs. Our results illustrate the important role of tussocks as a foundation species in determining future Arctic C stocks and highlight the need for better representation of this species in TBMs. Article in Journal/Newspaper Arctic Climate change Eriophorum Tundra Victoria Island Directory of Open Access Journals: DOAJ Articles Arctic Environmental Research Letters 17 4 045024 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic tundra carbon cycle climate change Eriophorum vaginatum carbon stocks Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
spellingShingle |
Arctic tundra carbon cycle climate change Eriophorum vaginatum carbon stocks Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 Salvatore R Curasi Ned Fetcher Rebecca E Hewitt Peter M Lafleur Michael M Loranty Michelle C Mack Jeremy L May Isla H Myers-Smith Susan M Natali Steven F Oberbauer Thomas C Parker Oliver Sonnentag Sergio A Vargas Zesati Stan D Wullschleger Adrian V Rocha Range shifts in a foundation sedge potentially induce large Arctic ecosystem carbon losses and gains |
topic_facet |
Arctic tundra carbon cycle climate change Eriophorum vaginatum carbon stocks Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
Foundation species have disproportionately large impacts on ecosystem structure and function. As a result, future changes to their distribution may be important determinants of ecosystem carbon (C) cycling in a warmer world. We assessed the role of a foundation tussock sedge ( Eriophorum vaginatum ) as a climatically vulnerable C stock using field data, a machine learning ecological niche model, and an ensemble of terrestrial biosphere models (TBMs). Field data indicated that tussock density has decreased by ∼0.97 tussocks per m ^2 over the past ∼38 years on Alaska’s North Slope from ∼1981 to 2019. This declining trend is concerning because tussocks are a large Arctic C stock, which enhances soil organic layer C stocks by 6.9% on average and represents 745 Tg C across our study area. By 2100, we project that changes in tussock density may decrease the tussock C stock by 41% in regions where tussocks are currently abundant (e.g. −0.8 tussocks per m ^2 and −85 Tg C on the North Slope) and may increase the tussock C stock by 46% in regions where tussocks are currently scarce (e.g. +0.9 tussocks per m ^2 and +81 Tg C on Victoria Island). These climate-induced changes to the tussock C stock were comparable to, but sometimes opposite in sign, to vegetation C stock changes predicted by an ensemble of TBMs. Our results illustrate the important role of tussocks as a foundation species in determining future Arctic C stocks and highlight the need for better representation of this species in TBMs. |
format |
Article in Journal/Newspaper |
author |
Salvatore R Curasi Ned Fetcher Rebecca E Hewitt Peter M Lafleur Michael M Loranty Michelle C Mack Jeremy L May Isla H Myers-Smith Susan M Natali Steven F Oberbauer Thomas C Parker Oliver Sonnentag Sergio A Vargas Zesati Stan D Wullschleger Adrian V Rocha |
author_facet |
Salvatore R Curasi Ned Fetcher Rebecca E Hewitt Peter M Lafleur Michael M Loranty Michelle C Mack Jeremy L May Isla H Myers-Smith Susan M Natali Steven F Oberbauer Thomas C Parker Oliver Sonnentag Sergio A Vargas Zesati Stan D Wullschleger Adrian V Rocha |
author_sort |
Salvatore R Curasi |
title |
Range shifts in a foundation sedge potentially induce large Arctic ecosystem carbon losses and gains |
title_short |
Range shifts in a foundation sedge potentially induce large Arctic ecosystem carbon losses and gains |
title_full |
Range shifts in a foundation sedge potentially induce large Arctic ecosystem carbon losses and gains |
title_fullStr |
Range shifts in a foundation sedge potentially induce large Arctic ecosystem carbon losses and gains |
title_full_unstemmed |
Range shifts in a foundation sedge potentially induce large Arctic ecosystem carbon losses and gains |
title_sort |
range shifts in a foundation sedge potentially induce large arctic ecosystem carbon losses and gains |
publisher |
IOP Publishing |
publishDate |
2022 |
url |
https://doi.org/10.1088/1748-9326/ac6005 https://doaj.org/article/45804bdfe0f548b2a1fb3c53c880c967 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Eriophorum Tundra Victoria Island |
genre_facet |
Arctic Climate change Eriophorum Tundra Victoria Island |
op_source |
Environmental Research Letters, Vol 17, Iss 4, p 045024 (2022) |
op_relation |
https://doi.org/10.1088/1748-9326/ac6005 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/ac6005 1748-9326 https://doaj.org/article/45804bdfe0f548b2a1fb3c53c880c967 |
op_doi |
https://doi.org/10.1088/1748-9326/ac6005 |
container_title |
Environmental Research Letters |
container_volume |
17 |
container_issue |
4 |
container_start_page |
045024 |
_version_ |
1776198326049308672 |