Bacterial community composition and diversity respond to nutrient amendment but not warming in a maritime Antarctic soil
A resumption of climate warming in maritime Antarctica, arising from continued greenhouse gas emissions to the atmosphere, is predicted to lead to further expansions of plant populations across the region, with consequent increases in nutrient inputs to soils. Here, we test the main and interactive...
Published in: | Microbial Ecology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2019
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Online Access: | https://pure.sruc.ac.uk/en/publications/2112c780-73f9-4369-b2c6-c2366df1ee5e https://doi.org/10.1007/s00248-019-01373-z https://pure.sruc.ac.uk/ws/files/18093116/17470503.pdf https://pure.sruc.ac.uk/ws/files/18093118/Figures_1_4.pdf http://www.scopus.com/inward/record.url?scp=85064550387&partnerID=8YFLogxK |
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ftsrucpubl:oai:pure.atira.dk:publications/2112c780-73f9-4369-b2c6-c2366df1ee5e 2024-06-02T07:56:30+00:00 Bacterial community composition and diversity respond to nutrient amendment but not warming in a maritime Antarctic soil Newsham, Kevin K Tripathi, Binu M Dong, Ke Yamamoto, Naomichi Adams, Jonathan M Hopkins, David W 2019-11 application/pdf https://pure.sruc.ac.uk/en/publications/2112c780-73f9-4369-b2c6-c2366df1ee5e https://doi.org/10.1007/s00248-019-01373-z https://pure.sruc.ac.uk/ws/files/18093116/17470503.pdf https://pure.sruc.ac.uk/ws/files/18093118/Figures_1_4.pdf http://www.scopus.com/inward/record.url?scp=85064550387&partnerID=8YFLogxK eng eng https://pure.sruc.ac.uk/en/publications/2112c780-73f9-4369-b2c6-c2366df1ee5e info:eu-repo/semantics/openAccess Newsham , K K , Tripathi , B M , Dong , K , Yamamoto , N , Adams , J M & Hopkins , D W 2019 , ' Bacterial community composition and diversity respond to nutrient amendment but not warming in a maritime Antarctic soil ' , Microbial Ecology , vol. 78 , no. 4 , pp. 974-984 . https://doi.org/10.1007/s00248-019-01373-z Antarctica Bacterial community composition Climate warming Gram-positive and gram-negative bacteria Nutrient inputs Proteobacteria-to-Acidobacteria ratio /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action article 2019 ftsrucpubl https://doi.org/10.1007/s00248-019-01373-z 2024-05-07T02:48:18Z A resumption of climate warming in maritime Antarctica, arising from continued greenhouse gas emissions to the atmosphere, is predicted to lead to further expansions of plant populations across the region, with consequent increases in nutrient inputs to soils. Here, we test the main and interactive effects of warming, applied with open top chambers (OTCs), and nutrient amendment with tryptic soy broth (TSB), an artificial growth substrate, on bacterial community composition and diversity using Illumina sequencing of 16S rRNA genes in soil from a field experiment in the southern maritime Antarctic. Substantial effects of TSB application on bacterial communities were identified after 49 months, including reduced diversity, altered phylogenetic community assembly processes, increased Proteobacteria-to-Acidobacteria ratios and significant divergence in community composition, notably increases in the relative abundances of the gram-positive genera Arthrobacter, Paeniglutamicibacter and Planococcus. Contrary to previous observations from other maritime Antarctic field warming experiments, we recorded no effects of warming with OTCs, or interactive effects of OTCs and TSB application, on bacterial community composition or diversity. Based on these findings, we conclude that further warming of the maritime Antarctic is unlikely to influence soil bacterial community composition or diversity directly, but that increased nutrient inputs arising from enhanced plant growth across the region may affect the composition of soil bacterial communities, with possible effects on ecosystem productivity. Article in Journal/Newspaper Antarc* Antarctic Antarctica SRUC (Scotland's Rural College): Research Portal Antarctic Microbial Ecology 78 4 974 984 |
institution |
Open Polar |
collection |
SRUC (Scotland's Rural College): Research Portal |
op_collection_id |
ftsrucpubl |
language |
English |
topic |
Antarctica Bacterial community composition Climate warming Gram-positive and gram-negative bacteria Nutrient inputs Proteobacteria-to-Acidobacteria ratio /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action |
spellingShingle |
Antarctica Bacterial community composition Climate warming Gram-positive and gram-negative bacteria Nutrient inputs Proteobacteria-to-Acidobacteria ratio /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action Newsham, Kevin K Tripathi, Binu M Dong, Ke Yamamoto, Naomichi Adams, Jonathan M Hopkins, David W Bacterial community composition and diversity respond to nutrient amendment but not warming in a maritime Antarctic soil |
topic_facet |
Antarctica Bacterial community composition Climate warming Gram-positive and gram-negative bacteria Nutrient inputs Proteobacteria-to-Acidobacteria ratio /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action |
description |
A resumption of climate warming in maritime Antarctica, arising from continued greenhouse gas emissions to the atmosphere, is predicted to lead to further expansions of plant populations across the region, with consequent increases in nutrient inputs to soils. Here, we test the main and interactive effects of warming, applied with open top chambers (OTCs), and nutrient amendment with tryptic soy broth (TSB), an artificial growth substrate, on bacterial community composition and diversity using Illumina sequencing of 16S rRNA genes in soil from a field experiment in the southern maritime Antarctic. Substantial effects of TSB application on bacterial communities were identified after 49 months, including reduced diversity, altered phylogenetic community assembly processes, increased Proteobacteria-to-Acidobacteria ratios and significant divergence in community composition, notably increases in the relative abundances of the gram-positive genera Arthrobacter, Paeniglutamicibacter and Planococcus. Contrary to previous observations from other maritime Antarctic field warming experiments, we recorded no effects of warming with OTCs, or interactive effects of OTCs and TSB application, on bacterial community composition or diversity. Based on these findings, we conclude that further warming of the maritime Antarctic is unlikely to influence soil bacterial community composition or diversity directly, but that increased nutrient inputs arising from enhanced plant growth across the region may affect the composition of soil bacterial communities, with possible effects on ecosystem productivity. |
format |
Article in Journal/Newspaper |
author |
Newsham, Kevin K Tripathi, Binu M Dong, Ke Yamamoto, Naomichi Adams, Jonathan M Hopkins, David W |
author_facet |
Newsham, Kevin K Tripathi, Binu M Dong, Ke Yamamoto, Naomichi Adams, Jonathan M Hopkins, David W |
author_sort |
Newsham, Kevin K |
title |
Bacterial community composition and diversity respond to nutrient amendment but not warming in a maritime Antarctic soil |
title_short |
Bacterial community composition and diversity respond to nutrient amendment but not warming in a maritime Antarctic soil |
title_full |
Bacterial community composition and diversity respond to nutrient amendment but not warming in a maritime Antarctic soil |
title_fullStr |
Bacterial community composition and diversity respond to nutrient amendment but not warming in a maritime Antarctic soil |
title_full_unstemmed |
Bacterial community composition and diversity respond to nutrient amendment but not warming in a maritime Antarctic soil |
title_sort |
bacterial community composition and diversity respond to nutrient amendment but not warming in a maritime antarctic soil |
publishDate |
2019 |
url |
https://pure.sruc.ac.uk/en/publications/2112c780-73f9-4369-b2c6-c2366df1ee5e https://doi.org/10.1007/s00248-019-01373-z https://pure.sruc.ac.uk/ws/files/18093116/17470503.pdf https://pure.sruc.ac.uk/ws/files/18093118/Figures_1_4.pdf http://www.scopus.com/inward/record.url?scp=85064550387&partnerID=8YFLogxK |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Newsham , K K , Tripathi , B M , Dong , K , Yamamoto , N , Adams , J M & Hopkins , D W 2019 , ' Bacterial community composition and diversity respond to nutrient amendment but not warming in a maritime Antarctic soil ' , Microbial Ecology , vol. 78 , no. 4 , pp. 974-984 . https://doi.org/10.1007/s00248-019-01373-z |
op_relation |
https://pure.sruc.ac.uk/en/publications/2112c780-73f9-4369-b2c6-c2366df1ee5e |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s00248-019-01373-z |
container_title |
Microbial Ecology |
container_volume |
78 |
container_issue |
4 |
container_start_page |
974 |
op_container_end_page |
984 |
_version_ |
1800756473130647552 |