Strong Dispersal Limitation of Microbial Communities at Shackleton Glacier, Antarctica
Microbial communities can be structured by both deterministic and stochastic processes, but the relative importance of these processes remains unknown. The ambiguity partly arises from an inability to disentangle soil microbial processes from confounding factors, such as aboveground plant communitie...
Published in: | mSystems |
---|---|
Main Authors: | , , , , , , , , |
Format: | Text |
Language: | unknown |
Published: |
e-Publications@Marquette
2023
|
Subjects: | |
Online Access: | https://epublications.marquette.edu/bio_fac/955 https://doi.org/10.1128/msystems.01254-22 |
id |
ftmarquetteuniv:oai:epublications.marquette.edu:bio_fac-1959 |
---|---|
record_format |
openpolar |
spelling |
ftmarquetteuniv:oai:epublications.marquette.edu:bio_fac-1959 2024-09-15T17:48:42+00:00 Strong Dispersal Limitation of Microbial Communities at Shackleton Glacier, Antarctica LeMoine, Nathan P. Adams, Byron J. Diaz, Melisa A. Dragone, Nicholas B. Franco, Andre L.C. Fierer, Noah Lyons, W. Berry Hogg, Ian Wall, Diana H. 2023-01-01T08:00:00Z https://epublications.marquette.edu/bio_fac/955 https://doi.org/10.1128/msystems.01254-22 unknown e-Publications@Marquette https://epublications.marquette.edu/bio_fac/955 https://doi.org/10.1128/msystems.01254-22 Biological Sciences Faculty Research and Publications community assembly stochasticity determinism niche dispersal Biology text 2023 ftmarquetteuniv https://doi.org/10.1128/msystems.01254-22 2024-08-27T23:39:33Z Microbial communities can be structured by both deterministic and stochastic processes, but the relative importance of these processes remains unknown. The ambiguity partly arises from an inability to disentangle soil microbial processes from confounding factors, such as aboveground plant communities or anthropogenic disturbance. In this study, we characterized the relative contributions of determinism and stochasticity to assembly processes of soil bacterial communities across a large environmental gradient of undisturbed Antarctic soils. We hypothesized that harsh soils would impose a strong environmental selection on microbial communities, whereas communities in benign soils would be structured largely by dispersal. Contrary to our expectations, dispersal was the dominant assembly mechanism across the entire soil environmental gradient, including benign environments. The microbial community composition reflects slowly changing soil conditions and dispersal limitation of isolated sites. Thus, stochastic processes, as opposed to deterministic, are primary drivers of soil ecosystem assembly across space at our study site. This is especially surprising given the strong environmental constraints on soil microorganisms in one of the harshest environments on the planet, suggesting that dispersal could be a driving force in microbial community assembly in soils worldwide. Text Antarc* Antarctic Antarctica Shackleton Glacier Marquette University: e-Publications@Marquette mSystems 8 1 |
institution |
Open Polar |
collection |
Marquette University: e-Publications@Marquette |
op_collection_id |
ftmarquetteuniv |
language |
unknown |
topic |
community assembly stochasticity determinism niche dispersal Biology |
spellingShingle |
community assembly stochasticity determinism niche dispersal Biology LeMoine, Nathan P. Adams, Byron J. Diaz, Melisa A. Dragone, Nicholas B. Franco, Andre L.C. Fierer, Noah Lyons, W. Berry Hogg, Ian Wall, Diana H. Strong Dispersal Limitation of Microbial Communities at Shackleton Glacier, Antarctica |
topic_facet |
community assembly stochasticity determinism niche dispersal Biology |
description |
Microbial communities can be structured by both deterministic and stochastic processes, but the relative importance of these processes remains unknown. The ambiguity partly arises from an inability to disentangle soil microbial processes from confounding factors, such as aboveground plant communities or anthropogenic disturbance. In this study, we characterized the relative contributions of determinism and stochasticity to assembly processes of soil bacterial communities across a large environmental gradient of undisturbed Antarctic soils. We hypothesized that harsh soils would impose a strong environmental selection on microbial communities, whereas communities in benign soils would be structured largely by dispersal. Contrary to our expectations, dispersal was the dominant assembly mechanism across the entire soil environmental gradient, including benign environments. The microbial community composition reflects slowly changing soil conditions and dispersal limitation of isolated sites. Thus, stochastic processes, as opposed to deterministic, are primary drivers of soil ecosystem assembly across space at our study site. This is especially surprising given the strong environmental constraints on soil microorganisms in one of the harshest environments on the planet, suggesting that dispersal could be a driving force in microbial community assembly in soils worldwide. |
format |
Text |
author |
LeMoine, Nathan P. Adams, Byron J. Diaz, Melisa A. Dragone, Nicholas B. Franco, Andre L.C. Fierer, Noah Lyons, W. Berry Hogg, Ian Wall, Diana H. |
author_facet |
LeMoine, Nathan P. Adams, Byron J. Diaz, Melisa A. Dragone, Nicholas B. Franco, Andre L.C. Fierer, Noah Lyons, W. Berry Hogg, Ian Wall, Diana H. |
author_sort |
LeMoine, Nathan P. |
title |
Strong Dispersal Limitation of Microbial Communities at Shackleton Glacier, Antarctica |
title_short |
Strong Dispersal Limitation of Microbial Communities at Shackleton Glacier, Antarctica |
title_full |
Strong Dispersal Limitation of Microbial Communities at Shackleton Glacier, Antarctica |
title_fullStr |
Strong Dispersal Limitation of Microbial Communities at Shackleton Glacier, Antarctica |
title_full_unstemmed |
Strong Dispersal Limitation of Microbial Communities at Shackleton Glacier, Antarctica |
title_sort |
strong dispersal limitation of microbial communities at shackleton glacier, antarctica |
publisher |
e-Publications@Marquette |
publishDate |
2023 |
url |
https://epublications.marquette.edu/bio_fac/955 https://doi.org/10.1128/msystems.01254-22 |
genre |
Antarc* Antarctic Antarctica Shackleton Glacier |
genre_facet |
Antarc* Antarctic Antarctica Shackleton Glacier |
op_source |
Biological Sciences Faculty Research and Publications |
op_relation |
https://epublications.marquette.edu/bio_fac/955 https://doi.org/10.1128/msystems.01254-22 |
op_doi |
https://doi.org/10.1128/msystems.01254-22 |
container_title |
mSystems |
container_volume |
8 |
container_issue |
1 |
_version_ |
1810290199593222144 |