Impact of long-term fertilizer and summer warming treatments on bulk soil and birch rhizosphere microbial communities in mesic arctic tundra
Recent climate warming in the Arctic is enhancing microbial decomposition of soil organic matter, which may result in globally significant greenhouse gas releases to the atmosphere. To better predict future impacts, bacterial and fungal community structures in both the bulk soil and the rhizosphere...
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2021
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ftdoajarticles:oai:doaj.org/article:54b2486b5f0044888e473986d43be4c1 2023-05-15T14:14:33+02:00 Impact of long-term fertilizer and summer warming treatments on bulk soil and birch rhizosphere microbial communities in mesic arctic tundra Michelle M. McKnight Paul Grogan Virginia K. Walker 2021-01-01T00:00:00Z https://doi.org/10.1080/15230430.2021.1951949 https://doaj.org/article/54b2486b5f0044888e473986d43be4c1 EN eng Taylor & Francis Group http://dx.doi.org/10.1080/15230430.2021.1951949 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 1523-0430 1938-4246 doi:10.1080/15230430.2021.1951949 https://doaj.org/article/54b2486b5f0044888e473986d43be4c1 Arctic, Antarctic, and Alpine Research, Vol 53, Iss 1, Pp 196-211 (2021) climate change nitrogen and phosphate fertilization betula glandulosa ectomycorrhizal fungi soil community diversity Environmental sciences GE1-350 Ecology QH540-549.5 article 2021 ftdoajarticles https://doi.org/10.1080/15230430.2021.1951949 2022-12-31T04:10:52Z Recent climate warming in the Arctic is enhancing microbial decomposition of soil organic matter, which may result in globally significant greenhouse gas releases to the atmosphere. To better predict future impacts, bacterial and fungal community structures in both the bulk soil and the rhizosphere of Arctic birch, Betula glandulosa, were determined in control, greenhouse summer warming, and annual factorial nitrogen (N) and phosphate (P) addition treatments twelve years after their establishment. DNA sequence analyses at multiple taxonomic levels consistently indicated substantial bulk soil and rhizosphere microbial community differences among the fertilization treatments but no significant greenhouse effects. These results suggest that climate warming will likely increase the activity rates of soil microbial decomposers but without substantially altering the structure of either the bacterial or fungal communities. Differential abundance testing revealed changes in ectomycorrhizal fungal species of the genus Thelephora in both bulk soil and rhizosphere, with increases in their relative abundance in P and N + P amended plots compared with warming and controls. Because birch is the principal low Arctic ectomycorrhizal host, our results suggest that these fungi may promote this shrub’s competitiveness where tundra soil nutrient availability is enhanced by warming or other means, ultimately contributing to arctic vegetation “greening.” Article in Journal/Newspaper Antarctic and Alpine Research Arctic Arctic Climate change Tundra Directory of Open Access Journals: DOAJ Articles Arctic Arctic, Antarctic, and Alpine Research 53 1 196 211 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
climate change nitrogen and phosphate fertilization betula glandulosa ectomycorrhizal fungi soil community diversity Environmental sciences GE1-350 Ecology QH540-549.5 |
spellingShingle |
climate change nitrogen and phosphate fertilization betula glandulosa ectomycorrhizal fungi soil community diversity Environmental sciences GE1-350 Ecology QH540-549.5 Michelle M. McKnight Paul Grogan Virginia K. Walker Impact of long-term fertilizer and summer warming treatments on bulk soil and birch rhizosphere microbial communities in mesic arctic tundra |
topic_facet |
climate change nitrogen and phosphate fertilization betula glandulosa ectomycorrhizal fungi soil community diversity Environmental sciences GE1-350 Ecology QH540-549.5 |
description |
Recent climate warming in the Arctic is enhancing microbial decomposition of soil organic matter, which may result in globally significant greenhouse gas releases to the atmosphere. To better predict future impacts, bacterial and fungal community structures in both the bulk soil and the rhizosphere of Arctic birch, Betula glandulosa, were determined in control, greenhouse summer warming, and annual factorial nitrogen (N) and phosphate (P) addition treatments twelve years after their establishment. DNA sequence analyses at multiple taxonomic levels consistently indicated substantial bulk soil and rhizosphere microbial community differences among the fertilization treatments but no significant greenhouse effects. These results suggest that climate warming will likely increase the activity rates of soil microbial decomposers but without substantially altering the structure of either the bacterial or fungal communities. Differential abundance testing revealed changes in ectomycorrhizal fungal species of the genus Thelephora in both bulk soil and rhizosphere, with increases in their relative abundance in P and N + P amended plots compared with warming and controls. Because birch is the principal low Arctic ectomycorrhizal host, our results suggest that these fungi may promote this shrub’s competitiveness where tundra soil nutrient availability is enhanced by warming or other means, ultimately contributing to arctic vegetation “greening.” |
format |
Article in Journal/Newspaper |
author |
Michelle M. McKnight Paul Grogan Virginia K. Walker |
author_facet |
Michelle M. McKnight Paul Grogan Virginia K. Walker |
author_sort |
Michelle M. McKnight |
title |
Impact of long-term fertilizer and summer warming treatments on bulk soil and birch rhizosphere microbial communities in mesic arctic tundra |
title_short |
Impact of long-term fertilizer and summer warming treatments on bulk soil and birch rhizosphere microbial communities in mesic arctic tundra |
title_full |
Impact of long-term fertilizer and summer warming treatments on bulk soil and birch rhizosphere microbial communities in mesic arctic tundra |
title_fullStr |
Impact of long-term fertilizer and summer warming treatments on bulk soil and birch rhizosphere microbial communities in mesic arctic tundra |
title_full_unstemmed |
Impact of long-term fertilizer and summer warming treatments on bulk soil and birch rhizosphere microbial communities in mesic arctic tundra |
title_sort |
impact of long-term fertilizer and summer warming treatments on bulk soil and birch rhizosphere microbial communities in mesic arctic tundra |
publisher |
Taylor & Francis Group |
publishDate |
2021 |
url |
https://doi.org/10.1080/15230430.2021.1951949 https://doaj.org/article/54b2486b5f0044888e473986d43be4c1 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Antarctic and Alpine Research Arctic Arctic Climate change Tundra |
genre_facet |
Antarctic and Alpine Research Arctic Arctic Climate change Tundra |
op_source |
Arctic, Antarctic, and Alpine Research, Vol 53, Iss 1, Pp 196-211 (2021) |
op_relation |
http://dx.doi.org/10.1080/15230430.2021.1951949 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 1523-0430 1938-4246 doi:10.1080/15230430.2021.1951949 https://doaj.org/article/54b2486b5f0044888e473986d43be4c1 |
op_doi |
https://doi.org/10.1080/15230430.2021.1951949 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
53 |
container_issue |
1 |
container_start_page |
196 |
op_container_end_page |
211 |
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1766286952730984448 |