Fungi benefit from two decades of increased nutrient availability in tundra heath soil.
If microbial degradation of carbon substrates in arctic soil is stimulated by climatic warming, this would be a significant positive feedback on global change. With data from a climate change experiment in Northern Sweden we show that warming and enhanced soil nutrient availability, which is a predi...
Published in: | PLoS ONE |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Public Library of Science (PLoS)
2013
|
Subjects: | |
Online Access: | https://lup.lub.lu.se/record/3559465 https://doi.org/10.1371/journal.pone.0056532 |
id |
ftulundlup:oai:lup.lub.lu.se:0dbc2ec0-8f44-4dbc-9c16-3f8650f2c91e |
---|---|
record_format |
openpolar |
spelling |
ftulundlup:oai:lup.lub.lu.se:0dbc2ec0-8f44-4dbc-9c16-3f8650f2c91e 2023-05-15T14:57:48+02:00 Fungi benefit from two decades of increased nutrient availability in tundra heath soil. Rinnan, Riikka Michelsen, Anders Bååth, Erland 2013 https://lup.lub.lu.se/record/3559465 https://doi.org/10.1371/journal.pone.0056532 eng eng Public Library of Science (PLoS) https://lup.lub.lu.se/record/3559465 http://dx.doi.org/10.1371/journal.pone.0056532 wos:000315184200097 pmid:23437159 scopus:84874238002 PLoS ONE; 8(2), no e56532 (2013) ISSN: 1932-6203 Biological Sciences contributiontojournal/article info:eu-repo/semantics/article text 2013 ftulundlup https://doi.org/10.1371/journal.pone.0056532 2023-02-01T23:26:44Z If microbial degradation of carbon substrates in arctic soil is stimulated by climatic warming, this would be a significant positive feedback on global change. With data from a climate change experiment in Northern Sweden we show that warming and enhanced soil nutrient availability, which is a predicted long-term consequence of climatic warming and mimicked by fertilization, both increase soil microbial biomass. However, while fertilization increased the relative abundance of fungi, warming caused only a minimal shift in the microbial community composition based on the phospholipid fatty acid (PLFA) and neutral lipid fatty acid (NLFA) profiles. The function of the microbial community was also differently affected, as indicated by stable isotope probing of PLFA and NLFA. We demonstrate that two decades of fertilization have favored fungi relative to bacteria, and increased the turnover of complex organic compounds such as vanillin, while warming has had no such effects. Furthermore, the NLFA-to-PLFA ratio for (13)C-incorporation from acetate increased in warmed plots but not in fertilized ones. Thus, fertilization cannot be used as a proxy for effects on warming in arctic tundra soils. Furthermore, the different functional responses suggest that the biomass increase found in both fertilized and warmed plots was mediated via different mechanisms. Article in Journal/Newspaper Arctic Climate change Northern Sweden Tundra Lund University Publications (LUP) Arctic PLoS ONE 8 2 e56532 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Biological Sciences |
spellingShingle |
Biological Sciences Rinnan, Riikka Michelsen, Anders Bååth, Erland Fungi benefit from two decades of increased nutrient availability in tundra heath soil. |
topic_facet |
Biological Sciences |
description |
If microbial degradation of carbon substrates in arctic soil is stimulated by climatic warming, this would be a significant positive feedback on global change. With data from a climate change experiment in Northern Sweden we show that warming and enhanced soil nutrient availability, which is a predicted long-term consequence of climatic warming and mimicked by fertilization, both increase soil microbial biomass. However, while fertilization increased the relative abundance of fungi, warming caused only a minimal shift in the microbial community composition based on the phospholipid fatty acid (PLFA) and neutral lipid fatty acid (NLFA) profiles. The function of the microbial community was also differently affected, as indicated by stable isotope probing of PLFA and NLFA. We demonstrate that two decades of fertilization have favored fungi relative to bacteria, and increased the turnover of complex organic compounds such as vanillin, while warming has had no such effects. Furthermore, the NLFA-to-PLFA ratio for (13)C-incorporation from acetate increased in warmed plots but not in fertilized ones. Thus, fertilization cannot be used as a proxy for effects on warming in arctic tundra soils. Furthermore, the different functional responses suggest that the biomass increase found in both fertilized and warmed plots was mediated via different mechanisms. |
format |
Article in Journal/Newspaper |
author |
Rinnan, Riikka Michelsen, Anders Bååth, Erland |
author_facet |
Rinnan, Riikka Michelsen, Anders Bååth, Erland |
author_sort |
Rinnan, Riikka |
title |
Fungi benefit from two decades of increased nutrient availability in tundra heath soil. |
title_short |
Fungi benefit from two decades of increased nutrient availability in tundra heath soil. |
title_full |
Fungi benefit from two decades of increased nutrient availability in tundra heath soil. |
title_fullStr |
Fungi benefit from two decades of increased nutrient availability in tundra heath soil. |
title_full_unstemmed |
Fungi benefit from two decades of increased nutrient availability in tundra heath soil. |
title_sort |
fungi benefit from two decades of increased nutrient availability in tundra heath soil. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2013 |
url |
https://lup.lub.lu.se/record/3559465 https://doi.org/10.1371/journal.pone.0056532 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Northern Sweden Tundra |
genre_facet |
Arctic Climate change Northern Sweden Tundra |
op_source |
PLoS ONE; 8(2), no e56532 (2013) ISSN: 1932-6203 |
op_relation |
https://lup.lub.lu.se/record/3559465 http://dx.doi.org/10.1371/journal.pone.0056532 wos:000315184200097 pmid:23437159 scopus:84874238002 |
op_doi |
https://doi.org/10.1371/journal.pone.0056532 |
container_title |
PLoS ONE |
container_volume |
8 |
container_issue |
2 |
container_start_page |
e56532 |
_version_ |
1766329915795308544 |