Diversity and ecology of freshwater diatoms (Bacillariophyta) in Petuniabukta (Spitsbergen)
Diatoms are one of the most abundant algal groups in polar ecosystems, both in number of specimens as in number of species. Their characteristic silica outer shell (the valve) and the significant responses to changes in their physical and chemical environment, make them excellent bio-indicators used...
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ftunivgent:oai:archive.ugent.be:7154281 2023-06-11T04:09:54+02:00 Diversity and ecology of freshwater diatoms (Bacillariophyta) in Petuniabukta (Spitsbergen) Pinseel, Eveline Van de Vijver, Bart Kopalová, Kateřina 2014 https://biblio.ugent.be/publication/7154281 http://hdl.handle.net/1854/LU-7154281 eng eng https://biblio.ugent.be/publication/7154281 http://hdl.handle.net/1854/LU-7154281 Polar Ecology Conference, Abstracts Biology and Life Sciences Spitsbergen new species ecology Bacillariophyta Diatoms conference info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/publishedVersion 2014 ftunivgent 2023-05-10T22:25:00Z Diatoms are one of the most abundant algal groups in polar ecosystems, both in number of specimens as in number of species. Their characteristic silica outer shell (the valve) and the significant responses to changes in their physical and chemical environment, make them excellent bio-indicators used in applied environmental, biogeographical and paleo-ecological studies. Unfortunately, our knowledge of the species composition of High Arctic diatom communities and their ecological preferences are only poorly known, mainly due to historic force-fitting and incorrect identifications of the composing species. The diatom flora of Svalbard in particular is only scarcely studied and most studies published so far are only quite summary. The present study attempts to contribute to our knowledge concerning the diversity and ecology of freshwater diatoms in the Petuniabukta region (Spitsbergen, Svalbard Archipelago). Samples of both epilithon and epiphyton of 40 lakes and pools were taken during the polar summer of 2013 and several physico-chemical lake characteristics (pH, conductivity and water temperature) were measured. The diatom communities were studied using light microscopy and, when appropriate, scanning elecktron microscopy. A total of 315 taxa belonging to 58 genera were observed. Of these, 239 taxa were identified up to the species, subspecies, variety or forma level. The identity of the other 76 taxa is uncertain or only known up to the genus level. At least 10 of the unidentified taxa can with certainty be considered new to science. A new Gomphonema species, Gomphonema svalbardense, has recently been described and several other taxa are currently being described which confirms that the diatom flora of Spitsbergen is not well known and many taxa remain to be discovered and described. Cluster analysis and ordination allowed separating the observed diatom communities in four different assemblages. Characterisation of these assemblages based on the measured physico-chemical features proved to be impossible ... Conference Object Arctic Svalbard Spitsbergen Ghent University Academic Bibliography Arctic Svalbard Svalbard Archipelago Petuniabukta ENVELOPE(16.532,16.532,78.687,78.687) |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Biology and Life Sciences Spitsbergen new species ecology Bacillariophyta Diatoms |
spellingShingle |
Biology and Life Sciences Spitsbergen new species ecology Bacillariophyta Diatoms Pinseel, Eveline Van de Vijver, Bart Kopalová, Kateřina Diversity and ecology of freshwater diatoms (Bacillariophyta) in Petuniabukta (Spitsbergen) |
topic_facet |
Biology and Life Sciences Spitsbergen new species ecology Bacillariophyta Diatoms |
description |
Diatoms are one of the most abundant algal groups in polar ecosystems, both in number of specimens as in number of species. Their characteristic silica outer shell (the valve) and the significant responses to changes in their physical and chemical environment, make them excellent bio-indicators used in applied environmental, biogeographical and paleo-ecological studies. Unfortunately, our knowledge of the species composition of High Arctic diatom communities and their ecological preferences are only poorly known, mainly due to historic force-fitting and incorrect identifications of the composing species. The diatom flora of Svalbard in particular is only scarcely studied and most studies published so far are only quite summary. The present study attempts to contribute to our knowledge concerning the diversity and ecology of freshwater diatoms in the Petuniabukta region (Spitsbergen, Svalbard Archipelago). Samples of both epilithon and epiphyton of 40 lakes and pools were taken during the polar summer of 2013 and several physico-chemical lake characteristics (pH, conductivity and water temperature) were measured. The diatom communities were studied using light microscopy and, when appropriate, scanning elecktron microscopy. A total of 315 taxa belonging to 58 genera were observed. Of these, 239 taxa were identified up to the species, subspecies, variety or forma level. The identity of the other 76 taxa is uncertain or only known up to the genus level. At least 10 of the unidentified taxa can with certainty be considered new to science. A new Gomphonema species, Gomphonema svalbardense, has recently been described and several other taxa are currently being described which confirms that the diatom flora of Spitsbergen is not well known and many taxa remain to be discovered and described. Cluster analysis and ordination allowed separating the observed diatom communities in four different assemblages. Characterisation of these assemblages based on the measured physico-chemical features proved to be impossible ... |
format |
Conference Object |
author |
Pinseel, Eveline Van de Vijver, Bart Kopalová, Kateřina |
author_facet |
Pinseel, Eveline Van de Vijver, Bart Kopalová, Kateřina |
author_sort |
Pinseel, Eveline |
title |
Diversity and ecology of freshwater diatoms (Bacillariophyta) in Petuniabukta (Spitsbergen) |
title_short |
Diversity and ecology of freshwater diatoms (Bacillariophyta) in Petuniabukta (Spitsbergen) |
title_full |
Diversity and ecology of freshwater diatoms (Bacillariophyta) in Petuniabukta (Spitsbergen) |
title_fullStr |
Diversity and ecology of freshwater diatoms (Bacillariophyta) in Petuniabukta (Spitsbergen) |
title_full_unstemmed |
Diversity and ecology of freshwater diatoms (Bacillariophyta) in Petuniabukta (Spitsbergen) |
title_sort |
diversity and ecology of freshwater diatoms (bacillariophyta) in petuniabukta (spitsbergen) |
publishDate |
2014 |
url |
https://biblio.ugent.be/publication/7154281 http://hdl.handle.net/1854/LU-7154281 |
long_lat |
ENVELOPE(16.532,16.532,78.687,78.687) |
geographic |
Arctic Svalbard Svalbard Archipelago Petuniabukta |
geographic_facet |
Arctic Svalbard Svalbard Archipelago Petuniabukta |
genre |
Arctic Svalbard Spitsbergen |
genre_facet |
Arctic Svalbard Spitsbergen |
op_source |
Polar Ecology Conference, Abstracts |
op_relation |
https://biblio.ugent.be/publication/7154281 http://hdl.handle.net/1854/LU-7154281 |
_version_ |
1768383929224527872 |