Potential contributions of root decomposition to the nitrogen cycle in arctic forest and tundra
Plant contributions to the nitrogen (N) cycle from decomposition are likely to be altered by vegetation shifts associated with climate change. Roots account for the majority of soil organic matter input from vegetation, but little is known about differences between vegetation types in their root con...
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Language: | English |
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Umeå universitet, Institutionen för ekologi, miljö och geovetenskap
2017
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Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-144116 https://doi.org/10.1002/ece3.3522 |
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ftumeauniv:oai:DiVA.org:umu-144116 2024-02-11T10:00:55+01:00 Potential contributions of root decomposition to the nitrogen cycle in arctic forest and tundra Trager, Sabrina Milbau, Ann Wilson, Scott D. 2017 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-144116 https://doi.org/10.1002/ece3.3522 eng eng Umeå universitet, Institutionen för ekologi, miljö och geovetenskap Research Institute for Nature and Forest INBO, Brussels, Belgium Department of Biology, University of Regina, Regina, SK, Canada Ecology and Evolution, 2017, 7:24, s. 11021-11032 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-144116 doi:10.1002/ece3.3522 PMID 29299278 ISI:000418824800048 Scopus 2-s2.0-85034221663 info:eu-repo/semantics/openAccess home-field advantage litter quality minirhizotron nitrogen content plant litter reciprocal transplant periment root production Ecology Ekologi Article in journal info:eu-repo/semantics/article text 2017 ftumeauniv https://doi.org/10.1002/ece3.3522 2024-01-17T23:36:38Z Plant contributions to the nitrogen (N) cycle from decomposition are likely to be altered by vegetation shifts associated with climate change. Roots account for the majority of soil organic matter input from vegetation, but little is known about differences between vegetation types in their root contributions to nutrient cycling. Here, we examine the potential contribution of fine roots to the N cycle in forest and tundra to gain insight into belowground consequences of the widely observed increase in woody vegetation that accompanies climate change in the Arctic. We combined measurements of root production from minirhizotron images with tissue analysis of roots from differing root diameter and color classes to obtain potential N input following decomposition. In addition, we tested for changes in N concentration of roots during early stages of decomposition, and investigated whether vegetation type (forest or tundra) affected changes in tissue N concentration during decomposition. For completeness, we also present respective measurements of leaves. The potential N input from roots was twofold greater in forest than in tundra, mainly due to greater root production in forest. Potential N input varied with root diameter and color, but this variation tended to be similar in forest and tundra. As for roots, the potential N input from leaves was significantly greater in forest than in tundra. Vegetation type had no effect on changes in root or leaf N concentration after 1year of decomposition. Our results suggest that shifts in vegetation that accompany climate change in the Arctic will likely increase plant-associated potential N input both belowground and aboveground. In contrast, shifts in vegetation might not alter changes in tissue N concentration during early stages of decomposition. Overall, differences between forest and tundra in potential contribution of decomposing roots to the N cycle reinforce differences between habitats that occur for leaves. Article in Journal/Newspaper Arctic Climate change Tundra Umeå University: Publications (DiVA) Arctic Ecology and Evolution 7 24 11021 11032 |
institution |
Open Polar |
collection |
Umeå University: Publications (DiVA) |
op_collection_id |
ftumeauniv |
language |
English |
topic |
home-field advantage litter quality minirhizotron nitrogen content plant litter reciprocal transplant periment root production Ecology Ekologi |
spellingShingle |
home-field advantage litter quality minirhizotron nitrogen content plant litter reciprocal transplant periment root production Ecology Ekologi Trager, Sabrina Milbau, Ann Wilson, Scott D. Potential contributions of root decomposition to the nitrogen cycle in arctic forest and tundra |
topic_facet |
home-field advantage litter quality minirhizotron nitrogen content plant litter reciprocal transplant periment root production Ecology Ekologi |
description |
Plant contributions to the nitrogen (N) cycle from decomposition are likely to be altered by vegetation shifts associated with climate change. Roots account for the majority of soil organic matter input from vegetation, but little is known about differences between vegetation types in their root contributions to nutrient cycling. Here, we examine the potential contribution of fine roots to the N cycle in forest and tundra to gain insight into belowground consequences of the widely observed increase in woody vegetation that accompanies climate change in the Arctic. We combined measurements of root production from minirhizotron images with tissue analysis of roots from differing root diameter and color classes to obtain potential N input following decomposition. In addition, we tested for changes in N concentration of roots during early stages of decomposition, and investigated whether vegetation type (forest or tundra) affected changes in tissue N concentration during decomposition. For completeness, we also present respective measurements of leaves. The potential N input from roots was twofold greater in forest than in tundra, mainly due to greater root production in forest. Potential N input varied with root diameter and color, but this variation tended to be similar in forest and tundra. As for roots, the potential N input from leaves was significantly greater in forest than in tundra. Vegetation type had no effect on changes in root or leaf N concentration after 1year of decomposition. Our results suggest that shifts in vegetation that accompany climate change in the Arctic will likely increase plant-associated potential N input both belowground and aboveground. In contrast, shifts in vegetation might not alter changes in tissue N concentration during early stages of decomposition. Overall, differences between forest and tundra in potential contribution of decomposing roots to the N cycle reinforce differences between habitats that occur for leaves. |
format |
Article in Journal/Newspaper |
author |
Trager, Sabrina Milbau, Ann Wilson, Scott D. |
author_facet |
Trager, Sabrina Milbau, Ann Wilson, Scott D. |
author_sort |
Trager, Sabrina |
title |
Potential contributions of root decomposition to the nitrogen cycle in arctic forest and tundra |
title_short |
Potential contributions of root decomposition to the nitrogen cycle in arctic forest and tundra |
title_full |
Potential contributions of root decomposition to the nitrogen cycle in arctic forest and tundra |
title_fullStr |
Potential contributions of root decomposition to the nitrogen cycle in arctic forest and tundra |
title_full_unstemmed |
Potential contributions of root decomposition to the nitrogen cycle in arctic forest and tundra |
title_sort |
potential contributions of root decomposition to the nitrogen cycle in arctic forest and tundra |
publisher |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap |
publishDate |
2017 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-144116 https://doi.org/10.1002/ece3.3522 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Tundra |
genre_facet |
Arctic Climate change Tundra |
op_relation |
Ecology and Evolution, 2017, 7:24, s. 11021-11032 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-144116 doi:10.1002/ece3.3522 PMID 29299278 ISI:000418824800048 Scopus 2-s2.0-85034221663 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/ece3.3522 |
container_title |
Ecology and Evolution |
container_volume |
7 |
container_issue |
24 |
container_start_page |
11021 |
op_container_end_page |
11032 |
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1790596644869242880 |