Biogeography of Cyanobacteria in Antarctic Mats and Implication for Conservation
On the Antarctic continent, cyanobacterial mats are widespread in the lacustrine biotopes and they often dominate the phototrophic biomass. Their diversity and biogeography are poorly understood because most studies cover a limited geographic area or are based only on morphotypes. Therefore, cyanoba...
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ftorbi:oai:orbi.ulg.ac.be:2268/230344 2024-10-13T14:01:32+00:00 Biogeography of Cyanobacteria in Antarctic Mats and Implication for Conservation Durieu, Benoit Lara, Yannick Stelmach Pessi, Igor Lambion, Alexandre Verleyen, Elie Baurain, Denis Wilmotte, Annick InBioS-CIP 2018-06-19 https://orbi.uliege.be/handle/2268/230344 en eng Polar 2018, Where the Poles come together, Abstract Proceedings, Open Science Conference, 19-23 June 2018, Davos, Switzerland https://www.polar2018.org/uploads/2/4/6/0/24605948/polar2018_abstractproceedings.pdf https://orbi.uliege.be/handle/2268/230344 info:hdl:2268/230344 Polar 2018, Where the Poles come together, Open Science Conference, Davos, Switzerland [CH], from 19-06-2018 to 23-06-2018 Antarctica Cyanobacteria Ecology Polar Biogeography Genetics Life sciences Genetics & genetic processes Environmental sciences & ecology Microbiology Sciences du vivant Génétique & processus génétiques Sciences de l’environnement & écologie Microbiologie conference paper not in proceedings http://purl.org/coar/resource_type/c_18cp info:eu-repo/semantics/conferencePaper 2018 ftorbi 2024-09-27T07:02:03Z On the Antarctic continent, cyanobacterial mats are widespread in the lacustrine biotopes and they often dominate the phototrophic biomass. Their diversity and biogeography are poorly understood because most studies cover a limited geographic area or are based only on morphotypes. Therefore, cyanobacteria are not fully taken into account in the biological datasets used to delineate conservation biogeographic regions (ACBRs). Recently, we have shown by 454 pyrosequencing of cyanobacteria-specific 16S rRNA amplicons that their distribution across the lacustrine ecosystems could be explained by ecological parameters (e.g. salinity and dissolved organic carbon). In order to further test this hypothesis, we significantly increased the spatial coverage of our samples. Here, we describe the results of 16S rRNA amplicons Illumina sequencing of 98 cyanobacterial mat samples from 10 ACBRs. From the 16012393 raw reads, 713 OTUs were obtained by bioinformatics analysis. Preliminary results show that both ecological parameters and latitude could explain the patterns of cyanobacterial communities. Indeed, nonmetric multidimensional scaling shows that sub-Antarctic samples (Macquarie and Marion Islands) group with North-East Antarctic Peninsula samples, whereas more continental samples (e.g. East Antarctica, South Victoria Land) group together. These findings can form the basis for a better understanding and a more adequate conservation of lacustrine ecosystems in Antarctica. Conference Object Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Victoria Land University of Liège: ORBi (Open Repository and Bibliography) Antarctic Antarctic Peninsula East Antarctica The Antarctic Victoria Land |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Antarctica Cyanobacteria Ecology Polar Biogeography Genetics Life sciences Genetics & genetic processes Environmental sciences & ecology Microbiology Sciences du vivant Génétique & processus génétiques Sciences de l’environnement & écologie Microbiologie |
spellingShingle |
Antarctica Cyanobacteria Ecology Polar Biogeography Genetics Life sciences Genetics & genetic processes Environmental sciences & ecology Microbiology Sciences du vivant Génétique & processus génétiques Sciences de l’environnement & écologie Microbiologie Durieu, Benoit Lara, Yannick Stelmach Pessi, Igor Lambion, Alexandre Verleyen, Elie Baurain, Denis Wilmotte, Annick Biogeography of Cyanobacteria in Antarctic Mats and Implication for Conservation |
topic_facet |
Antarctica Cyanobacteria Ecology Polar Biogeography Genetics Life sciences Genetics & genetic processes Environmental sciences & ecology Microbiology Sciences du vivant Génétique & processus génétiques Sciences de l’environnement & écologie Microbiologie |
description |
On the Antarctic continent, cyanobacterial mats are widespread in the lacustrine biotopes and they often dominate the phototrophic biomass. Their diversity and biogeography are poorly understood because most studies cover a limited geographic area or are based only on morphotypes. Therefore, cyanobacteria are not fully taken into account in the biological datasets used to delineate conservation biogeographic regions (ACBRs). Recently, we have shown by 454 pyrosequencing of cyanobacteria-specific 16S rRNA amplicons that their distribution across the lacustrine ecosystems could be explained by ecological parameters (e.g. salinity and dissolved organic carbon). In order to further test this hypothesis, we significantly increased the spatial coverage of our samples. Here, we describe the results of 16S rRNA amplicons Illumina sequencing of 98 cyanobacterial mat samples from 10 ACBRs. From the 16012393 raw reads, 713 OTUs were obtained by bioinformatics analysis. Preliminary results show that both ecological parameters and latitude could explain the patterns of cyanobacterial communities. Indeed, nonmetric multidimensional scaling shows that sub-Antarctic samples (Macquarie and Marion Islands) group with North-East Antarctic Peninsula samples, whereas more continental samples (e.g. East Antarctica, South Victoria Land) group together. These findings can form the basis for a better understanding and a more adequate conservation of lacustrine ecosystems in Antarctica. |
author2 |
InBioS-CIP |
format |
Conference Object |
author |
Durieu, Benoit Lara, Yannick Stelmach Pessi, Igor Lambion, Alexandre Verleyen, Elie Baurain, Denis Wilmotte, Annick |
author_facet |
Durieu, Benoit Lara, Yannick Stelmach Pessi, Igor Lambion, Alexandre Verleyen, Elie Baurain, Denis Wilmotte, Annick |
author_sort |
Durieu, Benoit |
title |
Biogeography of Cyanobacteria in Antarctic Mats and Implication for Conservation |
title_short |
Biogeography of Cyanobacteria in Antarctic Mats and Implication for Conservation |
title_full |
Biogeography of Cyanobacteria in Antarctic Mats and Implication for Conservation |
title_fullStr |
Biogeography of Cyanobacteria in Antarctic Mats and Implication for Conservation |
title_full_unstemmed |
Biogeography of Cyanobacteria in Antarctic Mats and Implication for Conservation |
title_sort |
biogeography of cyanobacteria in antarctic mats and implication for conservation |
publishDate |
2018 |
url |
https://orbi.uliege.be/handle/2268/230344 |
geographic |
Antarctic Antarctic Peninsula East Antarctica The Antarctic Victoria Land |
geographic_facet |
Antarctic Antarctic Peninsula East Antarctica The Antarctic Victoria Land |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Victoria Land |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Victoria Land |
op_source |
Polar 2018, Where the Poles come together, Open Science Conference, Davos, Switzerland [CH], from 19-06-2018 to 23-06-2018 |
op_relation |
Polar 2018, Where the Poles come together, Abstract Proceedings, Open Science Conference, 19-23 June 2018, Davos, Switzerland https://www.polar2018.org/uploads/2/4/6/0/24605948/polar2018_abstractproceedings.pdf https://orbi.uliege.be/handle/2268/230344 info:hdl:2268/230344 |
_version_ |
1812811443341361152 |