The structure and diversity of freshwater diatom assemblages from Franz Josef Land Archipelago: a northern outpost for freshwater diatoms
We examined diatom assemblages from 18 stream and pond samples in the Franz Josef Land Archipelago (FJL), the most northern land of Eurasia. More than 216 taxa were observed, revealing a rich circumpolar diatom flora, including many undescribed taxa. Widely distributed taxa were the most abundant by...
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ftdoajarticles:oai:doaj.org/article:a4f62324e21b4d8db43afa581c278595 2023-08-27T04:07:39+02:00 The structure and diversity of freshwater diatom assemblages from Franz Josef Land Archipelago: a northern outpost for freshwater diatoms Sergi Pla-Rabés Paul B. Hamilton Enric Ballesteros Maria Gavrilo Alan M. Friedlander Enric Sala 2016-02-01T00:00:00Z https://doi.org/10.7717/peerj.1705 https://doaj.org/article/a4f62324e21b4d8db43afa581c278595 EN eng PeerJ Inc. https://peerj.com/articles/1705.pdf https://peerj.com/articles/1705/ https://doaj.org/toc/2167-8359 doi:10.7717/peerj.1705 2167-8359 https://doaj.org/article/a4f62324e21b4d8db43afa581c278595 PeerJ, Vol 4, p e1705 (2016) Arctic Climate change β-diversity Diversity Indicator value Indval Medicine R article 2016 ftdoajarticles https://doi.org/10.7717/peerj.1705 2023-08-06T00:40:30Z We examined diatom assemblages from 18 stream and pond samples in the Franz Josef Land Archipelago (FJL), the most northern land of Eurasia. More than 216 taxa were observed, revealing a rich circumpolar diatom flora, including many undescribed taxa. Widely distributed taxa were the most abundant by cell densities, while circumpolar taxa were the most species rich. Stream and pond habitats hosted different assemblages, and varied along a pH gradient. Diatoma tenuis was the most abundant and ubiquitous taxon. However, several circumpolar taxa such as Chamaepinnularia gandrupii, Cymbella botellus, Psammothidium sp. and Humidophila laevissima were also found in relatively high abundances. Aerophilic taxa were an important component of FJL diatom assemblages (Humidophila spp., Caloneis spp. and Pinnularia spp.), reflecting the large and extreme seasonal changes in Arctic conditions. We predict a decrease in the abundance of circumpolar taxa, an increase in local (α-) freshwater diatom diversity, but a decrease in regional diversity (circumpolar homogenization) as a result of current warming trends and to a lesser extent the increasing human footprint in the region. Article in Journal/Newspaper Arctic Climate change Franz Josef Land Directory of Open Access Journals: DOAJ Articles Arctic Franz Josef Land ENVELOPE(55.000,55.000,81.000,81.000) PeerJ 4 e1705 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic Climate change β-diversity Diversity Indicator value Indval Medicine R |
spellingShingle |
Arctic Climate change β-diversity Diversity Indicator value Indval Medicine R Sergi Pla-Rabés Paul B. Hamilton Enric Ballesteros Maria Gavrilo Alan M. Friedlander Enric Sala The structure and diversity of freshwater diatom assemblages from Franz Josef Land Archipelago: a northern outpost for freshwater diatoms |
topic_facet |
Arctic Climate change β-diversity Diversity Indicator value Indval Medicine R |
description |
We examined diatom assemblages from 18 stream and pond samples in the Franz Josef Land Archipelago (FJL), the most northern land of Eurasia. More than 216 taxa were observed, revealing a rich circumpolar diatom flora, including many undescribed taxa. Widely distributed taxa were the most abundant by cell densities, while circumpolar taxa were the most species rich. Stream and pond habitats hosted different assemblages, and varied along a pH gradient. Diatoma tenuis was the most abundant and ubiquitous taxon. However, several circumpolar taxa such as Chamaepinnularia gandrupii, Cymbella botellus, Psammothidium sp. and Humidophila laevissima were also found in relatively high abundances. Aerophilic taxa were an important component of FJL diatom assemblages (Humidophila spp., Caloneis spp. and Pinnularia spp.), reflecting the large and extreme seasonal changes in Arctic conditions. We predict a decrease in the abundance of circumpolar taxa, an increase in local (α-) freshwater diatom diversity, but a decrease in regional diversity (circumpolar homogenization) as a result of current warming trends and to a lesser extent the increasing human footprint in the region. |
format |
Article in Journal/Newspaper |
author |
Sergi Pla-Rabés Paul B. Hamilton Enric Ballesteros Maria Gavrilo Alan M. Friedlander Enric Sala |
author_facet |
Sergi Pla-Rabés Paul B. Hamilton Enric Ballesteros Maria Gavrilo Alan M. Friedlander Enric Sala |
author_sort |
Sergi Pla-Rabés |
title |
The structure and diversity of freshwater diatom assemblages from Franz Josef Land Archipelago: a northern outpost for freshwater diatoms |
title_short |
The structure and diversity of freshwater diatom assemblages from Franz Josef Land Archipelago: a northern outpost for freshwater diatoms |
title_full |
The structure and diversity of freshwater diatom assemblages from Franz Josef Land Archipelago: a northern outpost for freshwater diatoms |
title_fullStr |
The structure and diversity of freshwater diatom assemblages from Franz Josef Land Archipelago: a northern outpost for freshwater diatoms |
title_full_unstemmed |
The structure and diversity of freshwater diatom assemblages from Franz Josef Land Archipelago: a northern outpost for freshwater diatoms |
title_sort |
structure and diversity of freshwater diatom assemblages from franz josef land archipelago: a northern outpost for freshwater diatoms |
publisher |
PeerJ Inc. |
publishDate |
2016 |
url |
https://doi.org/10.7717/peerj.1705 https://doaj.org/article/a4f62324e21b4d8db43afa581c278595 |
long_lat |
ENVELOPE(55.000,55.000,81.000,81.000) |
geographic |
Arctic Franz Josef Land |
geographic_facet |
Arctic Franz Josef Land |
genre |
Arctic Climate change Franz Josef Land |
genre_facet |
Arctic Climate change Franz Josef Land |
op_source |
PeerJ, Vol 4, p e1705 (2016) |
op_relation |
https://peerj.com/articles/1705.pdf https://peerj.com/articles/1705/ https://doaj.org/toc/2167-8359 doi:10.7717/peerj.1705 2167-8359 https://doaj.org/article/a4f62324e21b4d8db43afa581c278595 |
op_doi |
https://doi.org/10.7717/peerj.1705 |
container_title |
PeerJ |
container_volume |
4 |
container_start_page |
e1705 |
_version_ |
1775348400826351616 |