Structuring effects of climate-related environmental factors on Antarctic microbial mat communities
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 n...
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ftvliz:oai:oma.vliz.be:210677 2023-05-15T13:33:15+02:00 Structuring effects of climate-related environmental factors on Antarctic microbial mat communities Verleyen, E. Sabbe, K. Hodgson, D.A. Grubisic, S. Taton, A. Cousin, S. Wilmotte, A. De Wever, A. Van der Gucht, K. Vyverman, W. 2010 application/pdf https://www.vliz.be/imisdocs/publications/299002.pdf en eng info:eu-repo/semantics/altIdentifier/wos/000277054100002 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.3354/ame01378 https://www.vliz.be/imisdocs/publications/299002.pdf info:eu-repo/semantics/openAccess %3Ci%3EAquat.+Microb.+Ecol.+59%281%29%3C%2Fi%3E%3A+11-24+%2B+suppl.+mat.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.3354%2Fame01378%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.3354%2Fame01378%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2010 ftvliz https://doi.org/10.3354/ame01378 2022-05-01T09:37:11Z 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 climate-related 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. Article in Journal/Newspaper Antarc* Antarctic Antarctica Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) Antarctic Aquatic Microbial Ecology 59 11 24 |
institution |
Open Polar |
collection |
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) |
op_collection_id |
ftvliz |
language |
English |
description |
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 climate-related 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. |
format |
Article in Journal/Newspaper |
author |
Verleyen, E. Sabbe, K. Hodgson, D.A. Grubisic, S. Taton, A. Cousin, S. Wilmotte, A. De Wever, A. Van der Gucht, K. Vyverman, W. |
spellingShingle |
Verleyen, E. Sabbe, K. Hodgson, D.A. Grubisic, S. Taton, A. Cousin, S. Wilmotte, A. De Wever, A. Van der Gucht, K. Vyverman, W. Structuring effects of climate-related environmental factors on Antarctic microbial mat communities |
author_facet |
Verleyen, E. Sabbe, K. Hodgson, D.A. Grubisic, S. Taton, A. Cousin, S. Wilmotte, A. De Wever, A. Van der Gucht, K. Vyverman, W. |
author_sort |
Verleyen, E. |
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 |
publishDate |
2010 |
url |
https://www.vliz.be/imisdocs/publications/299002.pdf |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
%3Ci%3EAquat.+Microb.+Ecol.+59%281%29%3C%2Fi%3E%3A+11-24+%2B+suppl.+mat.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.3354%2Fame01378%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.3354%2Fame01378%3C%2Fa%3E |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000277054100002 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.3354/ame01378 https://www.vliz.be/imisdocs/publications/299002.pdf |
op_rights |
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_ |
1766040514669314048 |