Taxon interactions control the distributions of cryoconite bacteria colonizing a High Arctic ice cap
Abstract Microbial colonization of glacial ice surfaces incurs feedbacks which affect the melting rate of the ice surface. Ecosystems formed as microbe–mineral aggregates termed cryoconite locally reduce ice surface albedo and represent foci of biodiversity and biogeochemical cycling. Consequently,...
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crwiley:10.1111/mec.13715 2024-06-23T07:45:09+00:00 Taxon interactions control the distributions of cryoconite bacteria colonizing a High Arctic ice cap Gokul, Jarishma K. Hodson, Andrew J. Saetnan, Eli R. Irvine‐Fynn, Tristram D. L. Westall, Philippa J. Detheridge, Andrew P. Takeuchi, Nozomu Bussell, Jennifer Mur, Luis A. J. Edwards, Arwyn Natural Environment Research Council Great Britain Sasakawa Foundation Natural Environment Research Council AU University Research Fund Great Britain Sasakawa Foundation Welsh Livery Guild scholarship South African National Research Foundation Fellowship 2016 http://dx.doi.org/10.1111/mec.13715 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmec.13715 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.13715 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1 http://onlinelibrary.wiley.com/termsAndConditions Molecular Ecology volume 25, issue 15, page 3752-3767 ISSN 0962-1083 1365-294X journal-article 2016 crwiley https://doi.org/10.1111/mec.13715 2024-06-11T04:41:00Z Abstract Microbial colonization of glacial ice surfaces incurs feedbacks which affect the melting rate of the ice surface. Ecosystems formed as microbe–mineral aggregates termed cryoconite locally reduce ice surface albedo and represent foci of biodiversity and biogeochemical cycling. Consequently, greater understanding the ecological processes in the formation of functional cryoconite ecosystems upon glacier surfaces is sought. Here, we present the first bacterial biogeography of an ice cap, evaluating the respective roles of dispersal, environmental and biotic filtration occurring at local scales in the assembly of cryoconite microbiota. 16S rRNA gene amplicon semiconductor sequencing of cryoconite colonizing a Svalbard ice cap coupled with digital elevation modelling of physical parameters reveals the bacterial community is dominated by a ubiquitous core of generalist taxa, with evidence for a moderate pairwise distance–decay relationship. While geographic position and melt season duration are prominent among environmental predictors of community structure, the core population of taxa appears highly influential in structuring the bacterial community. Taxon co‐occurrence network analysis reveals a highly modular community structured by positive interactions with bottleneck taxa, predominantly Actinobacteria affiliated to isolates from soil humus. In contrast, the filamentous cyanobacterial taxon (assigned to Leptolyngbya/Phormidesmis pristleyi ) which dominates the community and binds together granular cryoconite are poorly connected to other taxa. While our study targeted one ice cap, the prominent role of generalist core taxa with close environmental relatives across the global cryosphere indicate discrete roles for cosmopolitan Actinobacteria and Cyanobacteria as respective keystone taxa and ecosystem engineers of cryoconite ecosystems colonizing ice caps. Article in Journal/Newspaper albedo Arctic glacier Ice cap Svalbard Wiley Online Library Arctic Svalbard Molecular Ecology 25 15 3752 3767 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Microbial colonization of glacial ice surfaces incurs feedbacks which affect the melting rate of the ice surface. Ecosystems formed as microbe–mineral aggregates termed cryoconite locally reduce ice surface albedo and represent foci of biodiversity and biogeochemical cycling. Consequently, greater understanding the ecological processes in the formation of functional cryoconite ecosystems upon glacier surfaces is sought. Here, we present the first bacterial biogeography of an ice cap, evaluating the respective roles of dispersal, environmental and biotic filtration occurring at local scales in the assembly of cryoconite microbiota. 16S rRNA gene amplicon semiconductor sequencing of cryoconite colonizing a Svalbard ice cap coupled with digital elevation modelling of physical parameters reveals the bacterial community is dominated by a ubiquitous core of generalist taxa, with evidence for a moderate pairwise distance–decay relationship. While geographic position and melt season duration are prominent among environmental predictors of community structure, the core population of taxa appears highly influential in structuring the bacterial community. Taxon co‐occurrence network analysis reveals a highly modular community structured by positive interactions with bottleneck taxa, predominantly Actinobacteria affiliated to isolates from soil humus. In contrast, the filamentous cyanobacterial taxon (assigned to Leptolyngbya/Phormidesmis pristleyi ) which dominates the community and binds together granular cryoconite are poorly connected to other taxa. While our study targeted one ice cap, the prominent role of generalist core taxa with close environmental relatives across the global cryosphere indicate discrete roles for cosmopolitan Actinobacteria and Cyanobacteria as respective keystone taxa and ecosystem engineers of cryoconite ecosystems colonizing ice caps. |
author2 |
Natural Environment Research Council Great Britain Sasakawa Foundation Natural Environment Research Council AU University Research Fund Great Britain Sasakawa Foundation Welsh Livery Guild scholarship South African National Research Foundation Fellowship |
format |
Article in Journal/Newspaper |
author |
Gokul, Jarishma K. Hodson, Andrew J. Saetnan, Eli R. Irvine‐Fynn, Tristram D. L. Westall, Philippa J. Detheridge, Andrew P. Takeuchi, Nozomu Bussell, Jennifer Mur, Luis A. J. Edwards, Arwyn |
spellingShingle |
Gokul, Jarishma K. Hodson, Andrew J. Saetnan, Eli R. Irvine‐Fynn, Tristram D. L. Westall, Philippa J. Detheridge, Andrew P. Takeuchi, Nozomu Bussell, Jennifer Mur, Luis A. J. Edwards, Arwyn Taxon interactions control the distributions of cryoconite bacteria colonizing a High Arctic ice cap |
author_facet |
Gokul, Jarishma K. Hodson, Andrew J. Saetnan, Eli R. Irvine‐Fynn, Tristram D. L. Westall, Philippa J. Detheridge, Andrew P. Takeuchi, Nozomu Bussell, Jennifer Mur, Luis A. J. Edwards, Arwyn |
author_sort |
Gokul, Jarishma K. |
title |
Taxon interactions control the distributions of cryoconite bacteria colonizing a High Arctic ice cap |
title_short |
Taxon interactions control the distributions of cryoconite bacteria colonizing a High Arctic ice cap |
title_full |
Taxon interactions control the distributions of cryoconite bacteria colonizing a High Arctic ice cap |
title_fullStr |
Taxon interactions control the distributions of cryoconite bacteria colonizing a High Arctic ice cap |
title_full_unstemmed |
Taxon interactions control the distributions of cryoconite bacteria colonizing a High Arctic ice cap |
title_sort |
taxon interactions control the distributions of cryoconite bacteria colonizing a high arctic ice cap |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1111/mec.13715 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmec.13715 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.13715 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
albedo Arctic glacier Ice cap Svalbard |
genre_facet |
albedo Arctic glacier Ice cap Svalbard |
op_source |
Molecular Ecology volume 25, issue 15, page 3752-3767 ISSN 0962-1083 1365-294X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1 http://onlinelibrary.wiley.com/termsAndConditions |
op_doi |
https://doi.org/10.1111/mec.13715 |
container_title |
Molecular Ecology |
container_volume |
25 |
container_issue |
15 |
container_start_page |
3752 |
op_container_end_page |
3767 |
_version_ |
1802651671886561280 |