Islands in the sand: are all hypolithic microbial communities the same?
Hypolithic microbial communities (hypolithons) are complex assemblages of phototrophic and heterotrophic organisms associated with the ventral surfaces of translucent minerals embedded in soil surfaces. Past studies on the assembly, structure and function of hypolithic communities have tended to use...
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Online Access: | https://hdl.handle.net/10289/15163 https://doi.org/10.1093/femsec/fiaa216 |
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ftunivwaikato:oai:researchcommons.waikato.ac.nz:10289/15163 2023-12-17T10:21:32+01:00 Islands in the sand: are all hypolithic microbial communities the same? Lebre, Pedro H. Bottos, Eric Makhalanyane, Thulani P. Hogg, Ian D. Cowan, Don A. 2021 application/pdf https://hdl.handle.net/10289/15163 https://doi.org/10.1093/femsec/fiaa216 en eng Oxford University Press (OUP) https://academic.oup.com/femsec/article-abstract/97/1/fiaa216/5928546?redirectedFrom=fulltext FEMS Microbiology Ecology 0168-6496 https://hdl.handle.net/10289/15163 doi:10.1093/femsec/fiaa216 1574-6941 © The Author(s) 2020. Published by Oxford University Press on behalf of FEMS. hypolithon small-scale heterogeneity phylogenetic turnover dispersal limitation functional variability core community Journal Article 2021 ftunivwaikato https://doi.org/10.1093/femsec/fiaa216 2023-11-21T18:25:52Z Hypolithic microbial communities (hypolithons) are complex assemblages of phototrophic and heterotrophic organisms associated with the ventral surfaces of translucent minerals embedded in soil surfaces. Past studies on the assembly, structure and function of hypolithic communities have tended to use composite samples (i.e. bulked hypolithic biomass) with the underlying assumption that samples collected from within a ‘homogeneous’ locality are phylogenetically homogeneous. In this study, we question this assumption by analysing the prokaryote phylogenetic diversity of multiple individual hypolithons: i.e. asking the seemingly simple question of ‘Are all hypolithons the same’? Using 16S rRNA gene-based phylogenetic analysis of hypolithons recovered for a localized moraine region in the Taylor Valley, McMurdo Dry Valleys, Antarctica, we demonstrate that these communities are heterogeneous at very small spatial scales (<5 m). Using null models of phylogenetic turnover, we showed that this heterogeneity between hypolithons is probably due to stochastic effects such as dispersal limitations, which is entirely consistent with the physically isolated nature of the hypolithic communities (‘islands in the sand’) and the almost complete absence of a liquid continuum as a mode of microbial transport between communities. Article in Journal/Newspaper Antarc* Antarctica McMurdo Dry Valleys The University of Waikato: Research Commons McMurdo Dry Valleys Taylor Valley ENVELOPE(163.000,163.000,-77.617,-77.617) FEMS Microbiology Ecology 97 1 |
institution |
Open Polar |
collection |
The University of Waikato: Research Commons |
op_collection_id |
ftunivwaikato |
language |
English |
topic |
hypolithon small-scale heterogeneity phylogenetic turnover dispersal limitation functional variability core community |
spellingShingle |
hypolithon small-scale heterogeneity phylogenetic turnover dispersal limitation functional variability core community Lebre, Pedro H. Bottos, Eric Makhalanyane, Thulani P. Hogg, Ian D. Cowan, Don A. Islands in the sand: are all hypolithic microbial communities the same? |
topic_facet |
hypolithon small-scale heterogeneity phylogenetic turnover dispersal limitation functional variability core community |
description |
Hypolithic microbial communities (hypolithons) are complex assemblages of phototrophic and heterotrophic organisms associated with the ventral surfaces of translucent minerals embedded in soil surfaces. Past studies on the assembly, structure and function of hypolithic communities have tended to use composite samples (i.e. bulked hypolithic biomass) with the underlying assumption that samples collected from within a ‘homogeneous’ locality are phylogenetically homogeneous. In this study, we question this assumption by analysing the prokaryote phylogenetic diversity of multiple individual hypolithons: i.e. asking the seemingly simple question of ‘Are all hypolithons the same’? Using 16S rRNA gene-based phylogenetic analysis of hypolithons recovered for a localized moraine region in the Taylor Valley, McMurdo Dry Valleys, Antarctica, we demonstrate that these communities are heterogeneous at very small spatial scales (<5 m). Using null models of phylogenetic turnover, we showed that this heterogeneity between hypolithons is probably due to stochastic effects such as dispersal limitations, which is entirely consistent with the physically isolated nature of the hypolithic communities (‘islands in the sand’) and the almost complete absence of a liquid continuum as a mode of microbial transport between communities. |
format |
Article in Journal/Newspaper |
author |
Lebre, Pedro H. Bottos, Eric Makhalanyane, Thulani P. Hogg, Ian D. Cowan, Don A. |
author_facet |
Lebre, Pedro H. Bottos, Eric Makhalanyane, Thulani P. Hogg, Ian D. Cowan, Don A. |
author_sort |
Lebre, Pedro H. |
title |
Islands in the sand: are all hypolithic microbial communities the same? |
title_short |
Islands in the sand: are all hypolithic microbial communities the same? |
title_full |
Islands in the sand: are all hypolithic microbial communities the same? |
title_fullStr |
Islands in the sand: are all hypolithic microbial communities the same? |
title_full_unstemmed |
Islands in the sand: are all hypolithic microbial communities the same? |
title_sort |
islands in the sand: are all hypolithic microbial communities the same? |
publisher |
Oxford University Press (OUP) |
publishDate |
2021 |
url |
https://hdl.handle.net/10289/15163 https://doi.org/10.1093/femsec/fiaa216 |
long_lat |
ENVELOPE(163.000,163.000,-77.617,-77.617) |
geographic |
McMurdo Dry Valleys Taylor Valley |
geographic_facet |
McMurdo Dry Valleys Taylor Valley |
genre |
Antarc* Antarctica McMurdo Dry Valleys |
genre_facet |
Antarc* Antarctica McMurdo Dry Valleys |
op_relation |
https://academic.oup.com/femsec/article-abstract/97/1/fiaa216/5928546?redirectedFrom=fulltext FEMS Microbiology Ecology 0168-6496 https://hdl.handle.net/10289/15163 doi:10.1093/femsec/fiaa216 1574-6941 |
op_rights |
© The Author(s) 2020. Published by Oxford University Press on behalf of FEMS. |
op_doi |
https://doi.org/10.1093/femsec/fiaa216 |
container_title |
FEMS Microbiology Ecology |
container_volume |
97 |
container_issue |
1 |
_version_ |
1785535615035506688 |