Proportion of fine roots, but not plant biomass allocation below ground, increases with elevation in arctic tundra
Abstract Questions Roots represent a considerable proportion of biomass, primary production and litter input in arctic tundra, and plant allocation of biomass to above‐ or below‐ground tissue in response to climate change is a key factor in the future C balance of these ecosystems. According to opti...
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crwiley:10.1111/jvs.12605 2024-09-15T17:34:28+00:00 Proportion of fine roots, but not plant biomass allocation below ground, increases with elevation in arctic tundra Blume‐Werry, Gesche Lindén, Elin Andresen, Lisa Classen, Aimée T. Sanders, Nathan J. von Oppen, Jonathan Sundqvist, Maja K. Collins, Beverly Göran Gustafssons Stiftelse för Naturvetenskaplig och Medicinsk Forskning Svenska Forskningsrådet Formas Carlsbergfondet Danmarks Grundforskningsfond 2018 http://dx.doi.org/10.1111/jvs.12605 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjvs.12605 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jvs.12605 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Vegetation Science volume 29, issue 2, page 226-235 ISSN 1100-9233 1654-1103 journal-article 2018 crwiley https://doi.org/10.1111/jvs.12605 2024-08-27T04:29:28Z Abstract Questions Roots represent a considerable proportion of biomass, primary production and litter input in arctic tundra, and plant allocation of biomass to above‐ or below‐ground tissue in response to climate change is a key factor in the future C balance of these ecosystems. According to optimality theory plants allocate C to the above‐ or below‐ground structure that captures the most limiting resource. We used an elevational gradient to test this theory and as a space‐for‐time substitution to inform on tundra carbon allocation patterns under a shifting climate, by exploring if increasing elevation was positively related to the root:shoot ratio, as well as a larger plant allocation to adsorptive over storage roots. Location Arctic tundra heath dominated by Empetrum hermaphroditum close to Abisko, Sweden. Methods We measured root:shoot and fine:coarse root ratios of the plant communities along an elevational gradient by sampling above‐ and below‐ground biomass, further separating root biomass into fine (<1 mm) and coarse roots. Results Plant biomass was higher at the lower elevations, but the root:shoot ratio did not vary with elevation. Resource allocation to fine relative to coarse roots increased with elevation, resulting in a fine:coarse root ratio that more than doubled with increasing elevation. Conclusions Contrary to previous works, the root:shoot ratio along this elevational gradient remained stable. However, communities along our study system were dominated by the same species at each elevation, which suggests that when changes in the root:shoot ratio occur with elevation these changes may be driven by differences in allocation patterns among species and thus turnover in plant community structure. Our results further reveal that the allocation of biomass to fine relative to coarse roots can differ between locations along an elevational gradient, even when overall above‐ vs below‐ground biomass allocation does not. Given the functionally different roles of fine vs coarse roots this could have ... Article in Journal/Newspaper Abisko Climate change Tundra Wiley Online Library Journal of Vegetation Science 29 2 226 235 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Questions Roots represent a considerable proportion of biomass, primary production and litter input in arctic tundra, and plant allocation of biomass to above‐ or below‐ground tissue in response to climate change is a key factor in the future C balance of these ecosystems. According to optimality theory plants allocate C to the above‐ or below‐ground structure that captures the most limiting resource. We used an elevational gradient to test this theory and as a space‐for‐time substitution to inform on tundra carbon allocation patterns under a shifting climate, by exploring if increasing elevation was positively related to the root:shoot ratio, as well as a larger plant allocation to adsorptive over storage roots. Location Arctic tundra heath dominated by Empetrum hermaphroditum close to Abisko, Sweden. Methods We measured root:shoot and fine:coarse root ratios of the plant communities along an elevational gradient by sampling above‐ and below‐ground biomass, further separating root biomass into fine (<1 mm) and coarse roots. Results Plant biomass was higher at the lower elevations, but the root:shoot ratio did not vary with elevation. Resource allocation to fine relative to coarse roots increased with elevation, resulting in a fine:coarse root ratio that more than doubled with increasing elevation. Conclusions Contrary to previous works, the root:shoot ratio along this elevational gradient remained stable. However, communities along our study system were dominated by the same species at each elevation, which suggests that when changes in the root:shoot ratio occur with elevation these changes may be driven by differences in allocation patterns among species and thus turnover in plant community structure. Our results further reveal that the allocation of biomass to fine relative to coarse roots can differ between locations along an elevational gradient, even when overall above‐ vs below‐ground biomass allocation does not. Given the functionally different roles of fine vs coarse roots this could have ... |
author2 |
Collins, Beverly Göran Gustafssons Stiftelse för Naturvetenskaplig och Medicinsk Forskning Svenska Forskningsrådet Formas Carlsbergfondet Danmarks Grundforskningsfond |
format |
Article in Journal/Newspaper |
author |
Blume‐Werry, Gesche Lindén, Elin Andresen, Lisa Classen, Aimée T. Sanders, Nathan J. von Oppen, Jonathan Sundqvist, Maja K. |
spellingShingle |
Blume‐Werry, Gesche Lindén, Elin Andresen, Lisa Classen, Aimée T. Sanders, Nathan J. von Oppen, Jonathan Sundqvist, Maja K. Proportion of fine roots, but not plant biomass allocation below ground, increases with elevation in arctic tundra |
author_facet |
Blume‐Werry, Gesche Lindén, Elin Andresen, Lisa Classen, Aimée T. Sanders, Nathan J. von Oppen, Jonathan Sundqvist, Maja K. |
author_sort |
Blume‐Werry, Gesche |
title |
Proportion of fine roots, but not plant biomass allocation below ground, increases with elevation in arctic tundra |
title_short |
Proportion of fine roots, but not plant biomass allocation below ground, increases with elevation in arctic tundra |
title_full |
Proportion of fine roots, but not plant biomass allocation below ground, increases with elevation in arctic tundra |
title_fullStr |
Proportion of fine roots, but not plant biomass allocation below ground, increases with elevation in arctic tundra |
title_full_unstemmed |
Proportion of fine roots, but not plant biomass allocation below ground, increases with elevation in arctic tundra |
title_sort |
proportion of fine roots, but not plant biomass allocation below ground, increases with elevation in arctic tundra |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1111/jvs.12605 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjvs.12605 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jvs.12605 |
genre |
Abisko Climate change Tundra |
genre_facet |
Abisko Climate change Tundra |
op_source |
Journal of Vegetation Science volume 29, issue 2, page 226-235 ISSN 1100-9233 1654-1103 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/jvs.12605 |
container_title |
Journal of Vegetation Science |
container_volume |
29 |
container_issue |
2 |
container_start_page |
226 |
op_container_end_page |
235 |
_version_ |
1810480029573840896 |