Periphytic diatom community structure in thermokarst ecosystems of Nunavik (Québec, Canada)
Climate change is causing rapid permafrost degradation across Arctic and subarctic regions, resulting in changes in the size, abundance, and structure of thermokarst (thaw) ponds and lakes. The main objectives of this study were to analyze periphytic diatom communities and their affinity to vegetati...
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Canadian Science Publishing
2018
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Online Access: | https://doi.org/10.1139/as-2016-0020 https://doaj.org/article/a05f52a284534ec8ba05db9e4c0f3a0d |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:a05f52a284534ec8ba05db9e4c0f3a0d 2023-05-15T14:22:21+02:00 Periphytic diatom community structure in thermokarst ecosystems of Nunavik (Québec, Canada) Frédéric Bouchard Valentin Proult Reinhard Pienitz Dermot Antoniades Roxane Tremblay Warwick F. Vincent 2018-03-01 https://doi.org/10.1139/as-2016-0020 https://doaj.org/article/a05f52a284534ec8ba05db9e4c0f3a0d en fr eng fre Canadian Science Publishing doi:10.1139/as-2016-0020 2368-7460 https://doaj.org/article/a05f52a284534ec8ba05db9e4c0f3a0d undefined Arctic Science, Vol 4, Iss 1, Pp 110-129 (2018) diatoms limnology permafrost shoreline vegetation thermokarst lakes geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2018 fttriple https://doi.org/10.1139/as-2016-0020 2023-01-22T18:19:04Z Climate change is causing rapid permafrost degradation across Arctic and subarctic regions, resulting in changes in the size, abundance, and structure of thermokarst (thaw) ponds and lakes. The main objectives of this study were to analyze periphytic diatom communities and their affinity to vegetation substrates in thermokarst ecosystems located in the eastern Hudson Bay region and to establish a first inventory of diatom assemblages and the associated littoral vegetation in these systems. Some generalist diatom species, including Tabellaria flocculosa, occupied all ecological niches in the water bodies. In contrast, genera such as Eunotia and Pinnularia were more specialized and generally concentrated on moss substrates. Shoreline vegetation and thermokarst pond/lake littoral morphology (slope) resulted in limnological conditions that differed between sites and ultimately affected diatom community structure. Our results show that both shoreline vegetation and diatom communities are diverse in thermokarst ecosystems, and their species composition depends mostly on site-specific properties (available microhabitats, local pond/lake morphology) rather than limnological conditions that are closely aligned with regional ecoclimatic conditions. Article in Journal/Newspaper Arctic Arctic Climate change Hudson Bay permafrost Subarctic Thermokarst Nunavik Unknown Arctic Canada Hudson Hudson Bay Nunavik Pond Lake ENVELOPE(-126.692,-126.692,56.046,56.046) Arctic Science |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English French |
topic |
diatoms limnology permafrost shoreline vegetation thermokarst lakes geo envir |
spellingShingle |
diatoms limnology permafrost shoreline vegetation thermokarst lakes geo envir Frédéric Bouchard Valentin Proult Reinhard Pienitz Dermot Antoniades Roxane Tremblay Warwick F. Vincent Periphytic diatom community structure in thermokarst ecosystems of Nunavik (Québec, Canada) |
topic_facet |
diatoms limnology permafrost shoreline vegetation thermokarst lakes geo envir |
description |
Climate change is causing rapid permafrost degradation across Arctic and subarctic regions, resulting in changes in the size, abundance, and structure of thermokarst (thaw) ponds and lakes. The main objectives of this study were to analyze periphytic diatom communities and their affinity to vegetation substrates in thermokarst ecosystems located in the eastern Hudson Bay region and to establish a first inventory of diatom assemblages and the associated littoral vegetation in these systems. Some generalist diatom species, including Tabellaria flocculosa, occupied all ecological niches in the water bodies. In contrast, genera such as Eunotia and Pinnularia were more specialized and generally concentrated on moss substrates. Shoreline vegetation and thermokarst pond/lake littoral morphology (slope) resulted in limnological conditions that differed between sites and ultimately affected diatom community structure. Our results show that both shoreline vegetation and diatom communities are diverse in thermokarst ecosystems, and their species composition depends mostly on site-specific properties (available microhabitats, local pond/lake morphology) rather than limnological conditions that are closely aligned with regional ecoclimatic conditions. |
format |
Article in Journal/Newspaper |
author |
Frédéric Bouchard Valentin Proult Reinhard Pienitz Dermot Antoniades Roxane Tremblay Warwick F. Vincent |
author_facet |
Frédéric Bouchard Valentin Proult Reinhard Pienitz Dermot Antoniades Roxane Tremblay Warwick F. Vincent |
author_sort |
Frédéric Bouchard |
title |
Periphytic diatom community structure in thermokarst ecosystems of Nunavik (Québec, Canada) |
title_short |
Periphytic diatom community structure in thermokarst ecosystems of Nunavik (Québec, Canada) |
title_full |
Periphytic diatom community structure in thermokarst ecosystems of Nunavik (Québec, Canada) |
title_fullStr |
Periphytic diatom community structure in thermokarst ecosystems of Nunavik (Québec, Canada) |
title_full_unstemmed |
Periphytic diatom community structure in thermokarst ecosystems of Nunavik (Québec, Canada) |
title_sort |
periphytic diatom community structure in thermokarst ecosystems of nunavik (québec, canada) |
publisher |
Canadian Science Publishing |
publishDate |
2018 |
url |
https://doi.org/10.1139/as-2016-0020 https://doaj.org/article/a05f52a284534ec8ba05db9e4c0f3a0d |
long_lat |
ENVELOPE(-126.692,-126.692,56.046,56.046) |
geographic |
Arctic Canada Hudson Hudson Bay Nunavik Pond Lake |
geographic_facet |
Arctic Canada Hudson Hudson Bay Nunavik Pond Lake |
genre |
Arctic Arctic Climate change Hudson Bay permafrost Subarctic Thermokarst Nunavik |
genre_facet |
Arctic Arctic Climate change Hudson Bay permafrost Subarctic Thermokarst Nunavik |
op_source |
Arctic Science, Vol 4, Iss 1, Pp 110-129 (2018) |
op_relation |
doi:10.1139/as-2016-0020 2368-7460 https://doaj.org/article/a05f52a284534ec8ba05db9e4c0f3a0d |
op_rights |
undefined |
op_doi |
https://doi.org/10.1139/as-2016-0020 |
container_title |
Arctic Science |
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1766294967267885056 |