The Transition From Stochastic to Deterministic Bacterial Community Assembly During Permafrost Thaw Succession
The Northern high latitudes are warming twice as fast as the global average, and permafrost has become vulnerable to thaw. Changes to the environment during thaw leads to shifts in microbial communities and their associated functions, such as greenhouse gas emissions. Understanding the ecological pr...
Published in: | Frontiers in Microbiology |
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Umeå universitet, Institutionen för ekologi, miljö och geovetenskap
2020
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Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-177735 https://doi.org/10.3389/fmicb.2020.596589 |
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ftumeauniv:oai:DiVA.org:umu-177735 2024-02-11T09:54:33+01:00 The Transition From Stochastic to Deterministic Bacterial Community Assembly During Permafrost Thaw Succession Doherty, Stacey Jarvis Barbato, Robyn A. Grandy, A. Stuart Thomas, W. Kelley Monteux, Sylvain Dorrepaal, Ellen Johansson, Margareta Ernakovich, Jessica G. 2020 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-177735 https://doi.org/10.3389/fmicb.2020.596589 eng eng Umeå universitet, Institutionen för ekologi, miljö och geovetenskap Frontiers in Microbiology, 2020, 11, orcid:0000-0002-0523-2471 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-177735 doi:10.3389/fmicb.2020.596589 PMID 33281795 ISI:000593529800001 Scopus 2-s2.0-85096764124 info:eu-repo/semantics/openAccess permafrost thaw microbial community community assembly phylogenetic null modeling ecological processes Climate Research Klimatforskning Article in journal info:eu-repo/semantics/article text 2020 ftumeauniv https://doi.org/10.3389/fmicb.2020.596589 2024-01-17T23:36:41Z The Northern high latitudes are warming twice as fast as the global average, and permafrost has become vulnerable to thaw. Changes to the environment during thaw leads to shifts in microbial communities and their associated functions, such as greenhouse gas emissions. Understanding the ecological processes that structure the identity and abundance (i.e., assembly) of pre- and post-thaw communities may improve predictions of the functional outcomes of permafrost thaw. We characterized microbial community assembly during permafrost thaw using in situ observations and a laboratory incubation of soils from the Storflaket Mire in Abisko, Sweden, where permafrost thaw has occurred over the past decade. In situ observations indicated that bacterial community assembly was driven by randomness (i.e., stochastic processes) immediately after thaw with drift and dispersal limitation being the dominant processes. As post-thaw succession progressed, environmentally driven (i.e., deterministic) processes became increasingly important in structuring microbial communities where homogenizing selection was the only process structuring upper active layer soils. Furthermore, laboratory-induced thaw reflected assembly dynamics immediately after thaw indicated by an increase in drift, but did not capture the long-term effects of permafrost thaw on microbial community dynamics. Our results did not reflect a link between assembly dynamics and carbon emissions, likely because respiration is the product of many processes in microbial communities. Identification of dominant microbial community assembly processes has the potential to improve our understanding of the ecological impact of permafrost thaw and the permafrost-climate feedback. Article in Journal/Newspaper Abisko permafrost Umeå University: Publications (DiVA) Abisko ENVELOPE(18.829,18.829,68.349,68.349) Frontiers in Microbiology 11 |
institution |
Open Polar |
collection |
Umeå University: Publications (DiVA) |
op_collection_id |
ftumeauniv |
language |
English |
topic |
permafrost thaw microbial community community assembly phylogenetic null modeling ecological processes Climate Research Klimatforskning |
spellingShingle |
permafrost thaw microbial community community assembly phylogenetic null modeling ecological processes Climate Research Klimatforskning Doherty, Stacey Jarvis Barbato, Robyn A. Grandy, A. Stuart Thomas, W. Kelley Monteux, Sylvain Dorrepaal, Ellen Johansson, Margareta Ernakovich, Jessica G. The Transition From Stochastic to Deterministic Bacterial Community Assembly During Permafrost Thaw Succession |
topic_facet |
permafrost thaw microbial community community assembly phylogenetic null modeling ecological processes Climate Research Klimatforskning |
description |
The Northern high latitudes are warming twice as fast as the global average, and permafrost has become vulnerable to thaw. Changes to the environment during thaw leads to shifts in microbial communities and their associated functions, such as greenhouse gas emissions. Understanding the ecological processes that structure the identity and abundance (i.e., assembly) of pre- and post-thaw communities may improve predictions of the functional outcomes of permafrost thaw. We characterized microbial community assembly during permafrost thaw using in situ observations and a laboratory incubation of soils from the Storflaket Mire in Abisko, Sweden, where permafrost thaw has occurred over the past decade. In situ observations indicated that bacterial community assembly was driven by randomness (i.e., stochastic processes) immediately after thaw with drift and dispersal limitation being the dominant processes. As post-thaw succession progressed, environmentally driven (i.e., deterministic) processes became increasingly important in structuring microbial communities where homogenizing selection was the only process structuring upper active layer soils. Furthermore, laboratory-induced thaw reflected assembly dynamics immediately after thaw indicated by an increase in drift, but did not capture the long-term effects of permafrost thaw on microbial community dynamics. Our results did not reflect a link between assembly dynamics and carbon emissions, likely because respiration is the product of many processes in microbial communities. Identification of dominant microbial community assembly processes has the potential to improve our understanding of the ecological impact of permafrost thaw and the permafrost-climate feedback. |
format |
Article in Journal/Newspaper |
author |
Doherty, Stacey Jarvis Barbato, Robyn A. Grandy, A. Stuart Thomas, W. Kelley Monteux, Sylvain Dorrepaal, Ellen Johansson, Margareta Ernakovich, Jessica G. |
author_facet |
Doherty, Stacey Jarvis Barbato, Robyn A. Grandy, A. Stuart Thomas, W. Kelley Monteux, Sylvain Dorrepaal, Ellen Johansson, Margareta Ernakovich, Jessica G. |
author_sort |
Doherty, Stacey Jarvis |
title |
The Transition From Stochastic to Deterministic Bacterial Community Assembly During Permafrost Thaw Succession |
title_short |
The Transition From Stochastic to Deterministic Bacterial Community Assembly During Permafrost Thaw Succession |
title_full |
The Transition From Stochastic to Deterministic Bacterial Community Assembly During Permafrost Thaw Succession |
title_fullStr |
The Transition From Stochastic to Deterministic Bacterial Community Assembly During Permafrost Thaw Succession |
title_full_unstemmed |
The Transition From Stochastic to Deterministic Bacterial Community Assembly During Permafrost Thaw Succession |
title_sort |
transition from stochastic to deterministic bacterial community assembly during permafrost thaw succession |
publisher |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap |
publishDate |
2020 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-177735 https://doi.org/10.3389/fmicb.2020.596589 |
long_lat |
ENVELOPE(18.829,18.829,68.349,68.349) |
geographic |
Abisko |
geographic_facet |
Abisko |
genre |
Abisko permafrost |
genre_facet |
Abisko permafrost |
op_relation |
Frontiers in Microbiology, 2020, 11, orcid:0000-0002-0523-2471 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-177735 doi:10.3389/fmicb.2020.596589 PMID 33281795 ISI:000593529800001 Scopus 2-s2.0-85096764124 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3389/fmicb.2020.596589 |
container_title |
Frontiers in Microbiology |
container_volume |
11 |
_version_ |
1790595026015748096 |