Fifteen years of climate change manipulations alter soil microbial communities in a subarctic heath ecosystem
Abstract Soil microbial biomass in arctic heaths has been shown to be largely unaffected by treatments simulating climate change with temperature, nutrient and light manipulations. Here, we demonstrate that more than 10 years is needed for development of significant responses, and that changes in mi...
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crwiley:10.1111/j.1365-2486.2006.01263.x 2024-09-30T14:31:33+00:00 Fifteen years of climate change manipulations alter soil microbial communities in a subarctic heath ecosystem RINNAN, RIIKKA MICHELSEN, ANDERS BÅÅTH, ERLAND JONASSON, SVEN 2006 http://dx.doi.org/10.1111/j.1365-2486.2006.01263.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2486.2006.01263.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2486.2006.01263.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Global Change Biology volume 13, issue 1, page 28-39 ISSN 1354-1013 1365-2486 journal-article 2006 crwiley https://doi.org/10.1111/j.1365-2486.2006.01263.x 2024-09-03T04:23:55Z Abstract Soil microbial biomass in arctic heaths has been shown to be largely unaffected by treatments simulating climate change with temperature, nutrient and light manipulations. Here, we demonstrate that more than 10 years is needed for development of significant responses, and that changes in microbial biomass are accompanied with strong alterations in microbial community composition. In contrast to slight or nonsignificant responses after 5, 6 and 10 treatment years, 15 years of inorganic NPK fertilizer addition to a subarctic heath had strong effects on the microbial community and, as observed for the first time, warming and shading also led to significant responses, often in opposite direction to the fertilization responses. The effects were clearer in the top 5 cm soil than at the 5–10 cm depth. Fertilization increased microbial biomass C and more than doubled microbial biomass P compared to the non‐fertilized plots. However, it only increased microbial biomass N at the 5–10 cm depth. Fertilization increased fungal biomass and the relative abundance of phospholipid fatty acid (PLFA) markers of gram‐positive bacteria. Warming and shading decreased the relative abundance of fungal PLFAs, and shading also altered the composition of the bacterial community. The long time lag in responses may be associated with indirect effects of the gradual changes in the plant biomass and community composition. The contrasting responses to warming and fertilization treatments show that results from fertilizer addition may not be similar to the effects of increased nutrient mineralization and availability following climatic warming. Article in Journal/Newspaper Arctic Climate change Subarctic Wiley Online Library Arctic Global Change Biology 13 1 28 39 |
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Wiley Online Library |
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English |
description |
Abstract Soil microbial biomass in arctic heaths has been shown to be largely unaffected by treatments simulating climate change with temperature, nutrient and light manipulations. Here, we demonstrate that more than 10 years is needed for development of significant responses, and that changes in microbial biomass are accompanied with strong alterations in microbial community composition. In contrast to slight or nonsignificant responses after 5, 6 and 10 treatment years, 15 years of inorganic NPK fertilizer addition to a subarctic heath had strong effects on the microbial community and, as observed for the first time, warming and shading also led to significant responses, often in opposite direction to the fertilization responses. The effects were clearer in the top 5 cm soil than at the 5–10 cm depth. Fertilization increased microbial biomass C and more than doubled microbial biomass P compared to the non‐fertilized plots. However, it only increased microbial biomass N at the 5–10 cm depth. Fertilization increased fungal biomass and the relative abundance of phospholipid fatty acid (PLFA) markers of gram‐positive bacteria. Warming and shading decreased the relative abundance of fungal PLFAs, and shading also altered the composition of the bacterial community. The long time lag in responses may be associated with indirect effects of the gradual changes in the plant biomass and community composition. The contrasting responses to warming and fertilization treatments show that results from fertilizer addition may not be similar to the effects of increased nutrient mineralization and availability following climatic warming. |
format |
Article in Journal/Newspaper |
author |
RINNAN, RIIKKA MICHELSEN, ANDERS BÅÅTH, ERLAND JONASSON, SVEN |
spellingShingle |
RINNAN, RIIKKA MICHELSEN, ANDERS BÅÅTH, ERLAND JONASSON, SVEN Fifteen years of climate change manipulations alter soil microbial communities in a subarctic heath ecosystem |
author_facet |
RINNAN, RIIKKA MICHELSEN, ANDERS BÅÅTH, ERLAND JONASSON, SVEN |
author_sort |
RINNAN, RIIKKA |
title |
Fifteen years of climate change manipulations alter soil microbial communities in a subarctic heath ecosystem |
title_short |
Fifteen years of climate change manipulations alter soil microbial communities in a subarctic heath ecosystem |
title_full |
Fifteen years of climate change manipulations alter soil microbial communities in a subarctic heath ecosystem |
title_fullStr |
Fifteen years of climate change manipulations alter soil microbial communities in a subarctic heath ecosystem |
title_full_unstemmed |
Fifteen years of climate change manipulations alter soil microbial communities in a subarctic heath ecosystem |
title_sort |
fifteen years of climate change manipulations alter soil microbial communities in a subarctic heath ecosystem |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1111/j.1365-2486.2006.01263.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2486.2006.01263.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2486.2006.01263.x |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Subarctic |
genre_facet |
Arctic Climate change Subarctic |
op_source |
Global Change Biology volume 13, issue 1, page 28-39 ISSN 1354-1013 1365-2486 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-2486.2006.01263.x |
container_title |
Global Change Biology |
container_volume |
13 |
container_issue |
1 |
container_start_page |
28 |
op_container_end_page |
39 |
_version_ |
1811636042004955136 |