Structuring effects of climate-related environmental factors on Antarctic microbial mat communities
peer reviewed Both ground-based and satellite data show that parts of Antarctica have entered a period of rapid climate change, which already affects the functioning and productivity of limnetic ecosystems. To predict the consequences of future climate anomalies for lacustrine microbial communities,...
Published in: | Aquatic Microbial Ecology |
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Online Access: | https://orbi.uliege.be/handle/2268/33815 https://orbi.uliege.be/bitstream/2268/33815/1/Verleyen%20et%20al%20AME%20_3_.pdf https://doi.org/10.3354/ame01378 |
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ftorbi:oai:orbi.ulg.ac.be:2268/33815 2024-04-21T07:48:06+00:00 Structuring effects of climate-related environmental factors on Antarctic microbial mat communities Les effets structurants des facteurs environnementaux liés au climat sur les communautés des tapis microbiens antarctiques Verleyen, Elie Sabbe, Koen Hodgson, Dominic A Grubisic, Stana Taton, Arnaud Cousin, Sylvie Wilmotte, Annick De Wever, Aaike Van Der Gucht, Kathleen Vyverman, Wim CIP - Centre d'Ingénierie des Protéines - ULiège 2010 https://orbi.uliege.be/handle/2268/33815 https://orbi.uliege.be/bitstream/2268/33815/1/Verleyen%20et%20al%20AME%20_3_.pdf https://doi.org/10.3354/ame01378 en eng Inter-Research urn:issn:0948-3055 urn:issn:1616-1564 https://orbi.uliege.be/handle/2268/33815 info:hdl:2268/33815 https://orbi.uliege.be/bitstream/2268/33815/1/Verleyen%20et%20al%20AME%20_3_.pdf doi:10.3354/ame01378 scopus-id:2-s2.0-77954301437 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Aquatic Microbial Ecology, 59, 11-24 (2010) Diversity Microbial Antarctic Life sciences Microbiology Environmental sciences & ecology Sciences du vivant Microbiologie Sciences de l’environnement & écologie journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2010 ftorbi https://doi.org/10.3354/ame01378 2024-03-27T14:59:32Z peer reviewed Both ground-based and satellite data show that parts of Antarctica have entered a period of rapid climate change, which already affects the functioning and productivity of limnetic ecosystems. To predict the consequences of future climate anomalies for lacustrine microbial communities, we not only need better baseline information on their biodiversity but also on the climaterelated environmental factors structuring these communities. Here we applied denaturing gradient gel electrophoresis (DGGE) of the small subunit ribosomal DNA (SSU rDNA) to assess the genetic composition and distribution of Cyanobacteria and eukaryotes in 37 benthic microbial mat samples from east Antarctic lakes. The lakes were selected to span a wide range of environmental gradients governed by differences in lake morphology and chemical limnology across 5 ice-free oases. Sequence analysis of selected DGGE bands revealed a high degree of potential endemism among the Cyanobacteria (mainly represented by Oscillatoriales and Nostocales), and the presence of a variety of protists (alveolates, stramenopiles and green algae), fungi, tardigrades and nematodes, which corroborates previous microscopy-based observations. Variation partitioning analyses revealed that the microbial mat community structure is largely regulated by both geographical and local environmental factors of which salinity (and related variables), lake water depth and nutrient concentrations are of major importance. These 3 groups of environmental variables have previously been shown to change drastically in Antarctica in response to climate change. Together, these results have obvious consequences for predicting the trajectory of biodiversity under changing climate conditions and call for the continued assessment of the biodiversity of these unique ecosystems. MICROMAT, AMBIO Article in Journal/Newspaper Antarc* Antarctic Antarctica Antarctique* University of Liège: ORBi (Open Repository and Bibliography) Aquatic Microbial Ecology 59 11 24 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Diversity Microbial Antarctic Life sciences Microbiology Environmental sciences & ecology Sciences du vivant Microbiologie Sciences de l’environnement & écologie |
spellingShingle |
Diversity Microbial Antarctic Life sciences Microbiology Environmental sciences & ecology Sciences du vivant Microbiologie Sciences de l’environnement & écologie Verleyen, Elie Sabbe, Koen Hodgson, Dominic A Grubisic, Stana Taton, Arnaud Cousin, Sylvie Wilmotte, Annick De Wever, Aaike Van Der Gucht, Kathleen Vyverman, Wim Structuring effects of climate-related environmental factors on Antarctic microbial mat communities |
topic_facet |
Diversity Microbial Antarctic Life sciences Microbiology Environmental sciences & ecology Sciences du vivant Microbiologie Sciences de l’environnement & écologie |
description |
peer reviewed Both ground-based and satellite data show that parts of Antarctica have entered a period of rapid climate change, which already affects the functioning and productivity of limnetic ecosystems. To predict the consequences of future climate anomalies for lacustrine microbial communities, we not only need better baseline information on their biodiversity but also on the climaterelated environmental factors structuring these communities. Here we applied denaturing gradient gel electrophoresis (DGGE) of the small subunit ribosomal DNA (SSU rDNA) to assess the genetic composition and distribution of Cyanobacteria and eukaryotes in 37 benthic microbial mat samples from east Antarctic lakes. The lakes were selected to span a wide range of environmental gradients governed by differences in lake morphology and chemical limnology across 5 ice-free oases. Sequence analysis of selected DGGE bands revealed a high degree of potential endemism among the Cyanobacteria (mainly represented by Oscillatoriales and Nostocales), and the presence of a variety of protists (alveolates, stramenopiles and green algae), fungi, tardigrades and nematodes, which corroborates previous microscopy-based observations. Variation partitioning analyses revealed that the microbial mat community structure is largely regulated by both geographical and local environmental factors of which salinity (and related variables), lake water depth and nutrient concentrations are of major importance. These 3 groups of environmental variables have previously been shown to change drastically in Antarctica in response to climate change. Together, these results have obvious consequences for predicting the trajectory of biodiversity under changing climate conditions and call for the continued assessment of the biodiversity of these unique ecosystems. MICROMAT, AMBIO |
author2 |
CIP - Centre d'Ingénierie des Protéines - ULiège |
format |
Article in Journal/Newspaper |
author |
Verleyen, Elie Sabbe, Koen Hodgson, Dominic A Grubisic, Stana Taton, Arnaud Cousin, Sylvie Wilmotte, Annick De Wever, Aaike Van Der Gucht, Kathleen Vyverman, Wim |
author_facet |
Verleyen, Elie Sabbe, Koen Hodgson, Dominic A Grubisic, Stana Taton, Arnaud Cousin, Sylvie Wilmotte, Annick De Wever, Aaike Van Der Gucht, Kathleen Vyverman, Wim |
author_sort |
Verleyen, Elie |
title |
Structuring effects of climate-related environmental factors on Antarctic microbial mat communities |
title_short |
Structuring effects of climate-related environmental factors on Antarctic microbial mat communities |
title_full |
Structuring effects of climate-related environmental factors on Antarctic microbial mat communities |
title_fullStr |
Structuring effects of climate-related environmental factors on Antarctic microbial mat communities |
title_full_unstemmed |
Structuring effects of climate-related environmental factors on Antarctic microbial mat communities |
title_sort |
structuring effects of climate-related environmental factors on antarctic microbial mat communities |
publisher |
Inter-Research |
publishDate |
2010 |
url |
https://orbi.uliege.be/handle/2268/33815 https://orbi.uliege.be/bitstream/2268/33815/1/Verleyen%20et%20al%20AME%20_3_.pdf https://doi.org/10.3354/ame01378 |
genre |
Antarc* Antarctic Antarctica Antarctique* |
genre_facet |
Antarc* Antarctic Antarctica Antarctique* |
op_source |
Aquatic Microbial Ecology, 59, 11-24 (2010) |
op_relation |
urn:issn:0948-3055 urn:issn:1616-1564 https://orbi.uliege.be/handle/2268/33815 info:hdl:2268/33815 https://orbi.uliege.be/bitstream/2268/33815/1/Verleyen%20et%20al%20AME%20_3_.pdf doi:10.3354/ame01378 scopus-id:2-s2.0-77954301437 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3354/ame01378 |
container_title |
Aquatic Microbial Ecology |
container_volume |
59 |
container_start_page |
11 |
op_container_end_page |
24 |
_version_ |
1796948145382359040 |