Rhizosphere allocation by canopy-forming species dominates soil CO2 efflux in a subarctic landscape
In arctic ecosystems, climate change has increased plant productivity. As arctic carbon (C) stocks predominantly are located belowground, the effects of greater plant productivity on soil C storage will significantly determine the net sink/source potential of these ecosystems, but vegetation control...
Published in: | New Phytologist |
---|---|
Main Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap
2020
|
Subjects: | |
Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:polar:diva-8521 https://doi.org/10.1111/nph.16573 |
id |
ftsprs:oai:DiVA.org:polar-8521 |
---|---|
record_format |
openpolar |
spelling |
ftsprs:oai:DiVA.org:polar-8521 2023-05-15T14:48:14+02:00 Rhizosphere allocation by canopy-forming species dominates soil CO2 efflux in a subarctic landscape Parker, Thomas C. Clemmensen, Karina E. Friggens, Nina L. Hartley, Iain P. Johnson, David Lindahl, Bjorn D. Olofsson, Johan Siewert, Matthias B. Street, Lorna E. Subke, Jens-Arne Wookey, Philip A. 2020 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:polar:diva-8521 https://doi.org/10.1111/nph.16573 eng eng Umeå universitet, Institutionen för ekologi, miljö och geovetenskap John Wiley & Sons New Phytologist, 0028-646X, 2020, 227:6, s. 1818-1830 http://urn.kb.se/resolve?urn=urn:nbn:se:polar:diva-8521 doi:10.1111/nph.16573 PMID 32248524 ISI:000531561300001 info:eu-repo/semantics/openAccess Arctic ectomycorrhizal fungi girdling rhizosphere shrub expansion soil CO2 efflux treeline Botany Botanik Article in journal info:eu-repo/semantics/article text 2020 ftsprs https://doi.org/10.1111/nph.16573 2022-07-10T16:16:53Z In arctic ecosystems, climate change has increased plant productivity. As arctic carbon (C) stocks predominantly are located belowground, the effects of greater plant productivity on soil C storage will significantly determine the net sink/source potential of these ecosystems, but vegetation controls on soil CO2 efflux remain poorly resolved. In order to identify the role of canopy‐forming species in belowground C dynamics, we conducted a girdling experiment with plots distributed across 1 km2 of treeline birch (Betula pubescens ) forest and willow (Salix lapponum ) patches in northern Sweden and quantified the contribution of canopy vegetation to soil CO2 fluxes and belowground productivity. Girdling birches reduced total soil CO2 efflux in the peak growing season by 53%, which is double the expected amount, given that trees contribute only half of the total leaf area in the forest. Root and mycorrhizal mycelial production also decreased substantially. At peak season, willow shrubs contributed 38% to soil CO2 efflux in their patches. Our findings indicate that C, recently fixed by trees and tall shrubs, makes a substantial contribution to soil respiration. It is critically important that these processes are taken into consideration in the context of a greening arctic because productivity and ecosystem C sequestration are not synonymous. Article in Journal/Newspaper Arctic Climate change Northern Sweden Subarctic Swedish Polar Research Secretariat: Swedish Polar Bibliography (DiVA) Arctic New Phytologist 227 6 1818 1830 |
institution |
Open Polar |
collection |
Swedish Polar Research Secretariat: Swedish Polar Bibliography (DiVA) |
op_collection_id |
ftsprs |
language |
English |
topic |
Arctic ectomycorrhizal fungi girdling rhizosphere shrub expansion soil CO2 efflux treeline Botany Botanik |
spellingShingle |
Arctic ectomycorrhizal fungi girdling rhizosphere shrub expansion soil CO2 efflux treeline Botany Botanik Parker, Thomas C. Clemmensen, Karina E. Friggens, Nina L. Hartley, Iain P. Johnson, David Lindahl, Bjorn D. Olofsson, Johan Siewert, Matthias B. Street, Lorna E. Subke, Jens-Arne Wookey, Philip A. Rhizosphere allocation by canopy-forming species dominates soil CO2 efflux in a subarctic landscape |
topic_facet |
Arctic ectomycorrhizal fungi girdling rhizosphere shrub expansion soil CO2 efflux treeline Botany Botanik |
description |
In arctic ecosystems, climate change has increased plant productivity. As arctic carbon (C) stocks predominantly are located belowground, the effects of greater plant productivity on soil C storage will significantly determine the net sink/source potential of these ecosystems, but vegetation controls on soil CO2 efflux remain poorly resolved. In order to identify the role of canopy‐forming species in belowground C dynamics, we conducted a girdling experiment with plots distributed across 1 km2 of treeline birch (Betula pubescens ) forest and willow (Salix lapponum ) patches in northern Sweden and quantified the contribution of canopy vegetation to soil CO2 fluxes and belowground productivity. Girdling birches reduced total soil CO2 efflux in the peak growing season by 53%, which is double the expected amount, given that trees contribute only half of the total leaf area in the forest. Root and mycorrhizal mycelial production also decreased substantially. At peak season, willow shrubs contributed 38% to soil CO2 efflux in their patches. Our findings indicate that C, recently fixed by trees and tall shrubs, makes a substantial contribution to soil respiration. It is critically important that these processes are taken into consideration in the context of a greening arctic because productivity and ecosystem C sequestration are not synonymous. |
format |
Article in Journal/Newspaper |
author |
Parker, Thomas C. Clemmensen, Karina E. Friggens, Nina L. Hartley, Iain P. Johnson, David Lindahl, Bjorn D. Olofsson, Johan Siewert, Matthias B. Street, Lorna E. Subke, Jens-Arne Wookey, Philip A. |
author_facet |
Parker, Thomas C. Clemmensen, Karina E. Friggens, Nina L. Hartley, Iain P. Johnson, David Lindahl, Bjorn D. Olofsson, Johan Siewert, Matthias B. Street, Lorna E. Subke, Jens-Arne Wookey, Philip A. |
author_sort |
Parker, Thomas C. |
title |
Rhizosphere allocation by canopy-forming species dominates soil CO2 efflux in a subarctic landscape |
title_short |
Rhizosphere allocation by canopy-forming species dominates soil CO2 efflux in a subarctic landscape |
title_full |
Rhizosphere allocation by canopy-forming species dominates soil CO2 efflux in a subarctic landscape |
title_fullStr |
Rhizosphere allocation by canopy-forming species dominates soil CO2 efflux in a subarctic landscape |
title_full_unstemmed |
Rhizosphere allocation by canopy-forming species dominates soil CO2 efflux in a subarctic landscape |
title_sort |
rhizosphere allocation by canopy-forming species dominates soil co2 efflux in a subarctic landscape |
publisher |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap |
publishDate |
2020 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:polar:diva-8521 https://doi.org/10.1111/nph.16573 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Northern Sweden Subarctic |
genre_facet |
Arctic Climate change Northern Sweden Subarctic |
op_relation |
New Phytologist, 0028-646X, 2020, 227:6, s. 1818-1830 http://urn.kb.se/resolve?urn=urn:nbn:se:polar:diva-8521 doi:10.1111/nph.16573 PMID 32248524 ISI:000531561300001 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1111/nph.16573 |
container_title |
New Phytologist |
container_volume |
227 |
container_issue |
6 |
container_start_page |
1818 |
op_container_end_page |
1830 |
_version_ |
1766319330065121280 |