An illustrated and annotated checklist of freshwater diatoms (Bacillariophyta) from Livingston, Signy and Beak Island (Maritime Antarctic Region)
Abstract: Background and aims - Non-marine diatom communities in the Antarctic Region are characterized by a typical species composition, dominated by a large number of Antarctic endemic species. Despite recent advances in our knowledge about the diversity and biogeography of non-marine Antarctic di...
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ftunivantwerpen:c:irua:130324 2023-07-16T03:52:03+02:00 An illustrated and annotated checklist of freshwater diatoms (Bacillariophyta) from Livingston, Signy and Beak Island (Maritime Antarctic Region) Sterken, Mieke Verleyen, Elie Jones, Vivienne J. Hodgson, Dominic A. Vyverman, Wim Sabbe, Koen Van de Vijver, Bart 2015 https://hdl.handle.net/10067/1303240151162165141 eng eng info:eu-repo/semantics/altIdentifier/doi/10.5091/PLECEVO.2015.1103 info:eu-repo/semantics/altIdentifier/isi/000366150800013 info:eu-repo/semantics/closedAccess 2032-3913 Plant ecology and evolution Biology info:eu-repo/semantics/article 2015 ftunivantwerpen https://doi.org/10.5091/PLECEVO.2015.1103 2023-06-26T22:19:46Z Abstract: Background and aims - Non-marine diatom communities in the Antarctic Region are characterized by a typical species composition, dominated by a large number of Antarctic endemic species. Despite recent advances in our knowledge about the diversity and biogeography of non-marine Antarctic diatoms, the flora of many Antarctic localities is still only poorly known, which can result in incorrect conceptions of species' distributions. The present paper provides a taxonomically consistent illustrated checklist of the diatom flora observed in recent and (sub)fossil non-marine sediments of three islands in the proximity of the northern Antarctic Peninsula, namely; Signy Island (South Orkneys), Livingston Island (South Shetlands) and Beak Island (James Ross Island group). Methods - The diatom flora of 66 samples collected from a wide variety of lakes and localities on the three above-mentioned islands has been studied using light and scanning electron microscopy. The biogeographical distribution of the composing taxa has been assessed on the basis of quality-checked distribution data from the recent literature. Key results - One hundred and two diatom taxa, belonging to thirty-four genera, were observed. Pinnularia (twelve taxa), Chamaepinnularia, Luticola, Planothidium, Psammothidium and Stauroneis (seven taxa each), Nitzschia (six taxa), Humidophila and Navicula (five taxa each) proved to be the most species-rich genera. Original morphometric data (including length, width and stria density) and illustrations are presented for all taxa observed. Forty-one species are hitherto only known from the Antarctic region. The exact taxonomic identity of twenty species remains uncertain and requires further study. It is suspected that many of these will also turn out to be restricted to the Antarctic region, suggesting that about half of all taxa observed are probably endemic to the Antarctic. Conclusions - The diatom flora of the three investigated localities comprises a large proportion of typical Antarctic taxa, many ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Beak Island James Ross Island James Ross Island group Livingston Island Ross Island Signy Island IRUA - Institutional Repository van de Universiteit Antwerpen Antarctic Antarctic Peninsula Beak Island ENVELOPE(-57.310,-57.310,-63.622,-63.622) Livingston Island ENVELOPE(-60.500,-60.500,-62.600,-62.600) Ross Island Signy Island ENVELOPE(-45.595,-45.595,-60.708,-60.708) The Antarctic Plant Ecology and Evolution 148 3 431 455 |
institution |
Open Polar |
collection |
IRUA - Institutional Repository van de Universiteit Antwerpen |
op_collection_id |
ftunivantwerpen |
language |
English |
topic |
Biology |
spellingShingle |
Biology Sterken, Mieke Verleyen, Elie Jones, Vivienne J. Hodgson, Dominic A. Vyverman, Wim Sabbe, Koen Van de Vijver, Bart An illustrated and annotated checklist of freshwater diatoms (Bacillariophyta) from Livingston, Signy and Beak Island (Maritime Antarctic Region) |
topic_facet |
Biology |
description |
Abstract: Background and aims - Non-marine diatom communities in the Antarctic Region are characterized by a typical species composition, dominated by a large number of Antarctic endemic species. Despite recent advances in our knowledge about the diversity and biogeography of non-marine Antarctic diatoms, the flora of many Antarctic localities is still only poorly known, which can result in incorrect conceptions of species' distributions. The present paper provides a taxonomically consistent illustrated checklist of the diatom flora observed in recent and (sub)fossil non-marine sediments of three islands in the proximity of the northern Antarctic Peninsula, namely; Signy Island (South Orkneys), Livingston Island (South Shetlands) and Beak Island (James Ross Island group). Methods - The diatom flora of 66 samples collected from a wide variety of lakes and localities on the three above-mentioned islands has been studied using light and scanning electron microscopy. The biogeographical distribution of the composing taxa has been assessed on the basis of quality-checked distribution data from the recent literature. Key results - One hundred and two diatom taxa, belonging to thirty-four genera, were observed. Pinnularia (twelve taxa), Chamaepinnularia, Luticola, Planothidium, Psammothidium and Stauroneis (seven taxa each), Nitzschia (six taxa), Humidophila and Navicula (five taxa each) proved to be the most species-rich genera. Original morphometric data (including length, width and stria density) and illustrations are presented for all taxa observed. Forty-one species are hitherto only known from the Antarctic region. The exact taxonomic identity of twenty species remains uncertain and requires further study. It is suspected that many of these will also turn out to be restricted to the Antarctic region, suggesting that about half of all taxa observed are probably endemic to the Antarctic. Conclusions - The diatom flora of the three investigated localities comprises a large proportion of typical Antarctic taxa, many ... |
format |
Article in Journal/Newspaper |
author |
Sterken, Mieke Verleyen, Elie Jones, Vivienne J. Hodgson, Dominic A. Vyverman, Wim Sabbe, Koen Van de Vijver, Bart |
author_facet |
Sterken, Mieke Verleyen, Elie Jones, Vivienne J. Hodgson, Dominic A. Vyverman, Wim Sabbe, Koen Van de Vijver, Bart |
author_sort |
Sterken, Mieke |
title |
An illustrated and annotated checklist of freshwater diatoms (Bacillariophyta) from Livingston, Signy and Beak Island (Maritime Antarctic Region) |
title_short |
An illustrated and annotated checklist of freshwater diatoms (Bacillariophyta) from Livingston, Signy and Beak Island (Maritime Antarctic Region) |
title_full |
An illustrated and annotated checklist of freshwater diatoms (Bacillariophyta) from Livingston, Signy and Beak Island (Maritime Antarctic Region) |
title_fullStr |
An illustrated and annotated checklist of freshwater diatoms (Bacillariophyta) from Livingston, Signy and Beak Island (Maritime Antarctic Region) |
title_full_unstemmed |
An illustrated and annotated checklist of freshwater diatoms (Bacillariophyta) from Livingston, Signy and Beak Island (Maritime Antarctic Region) |
title_sort |
illustrated and annotated checklist of freshwater diatoms (bacillariophyta) from livingston, signy and beak island (maritime antarctic region) |
publishDate |
2015 |
url |
https://hdl.handle.net/10067/1303240151162165141 |
long_lat |
ENVELOPE(-57.310,-57.310,-63.622,-63.622) ENVELOPE(-60.500,-60.500,-62.600,-62.600) ENVELOPE(-45.595,-45.595,-60.708,-60.708) |
geographic |
Antarctic Antarctic Peninsula Beak Island Livingston Island Ross Island Signy Island The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Beak Island Livingston Island Ross Island Signy Island The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Beak Island James Ross Island James Ross Island group Livingston Island Ross Island Signy Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Beak Island James Ross Island James Ross Island group Livingston Island Ross Island Signy Island |
op_source |
2032-3913 Plant ecology and evolution |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5091/PLECEVO.2015.1103 info:eu-repo/semantics/altIdentifier/isi/000366150800013 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.5091/PLECEVO.2015.1103 |
container_title |
Plant Ecology and Evolution |
container_volume |
148 |
container_issue |
3 |
container_start_page |
431 |
op_container_end_page |
455 |
_version_ |
1771544337696423936 |