Diversity patterns in subarctic stream benthic invertebrate assemblages from the Sahtu Settlement Area, Northwest Territories, Canada
Benthic invertebrate assemblages were studied across four streams in the Sahtu Settlement Region of the Northwest Territories between July 2010 and October 2011 to provide information on biotic composition and associations with habitat and temporal factors. Overall diversity was similar for all stre...
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Canadian Science Publishing
2015
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Online Access: | https://doi.org/10.1139/as-2015-0006 https://doaj.org/article/97644479494c4be1949bff582e4a6447 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:97644479494c4be1949bff582e4a6447 2023-05-15T14:22:21+02:00 Diversity patterns in subarctic stream benthic invertebrate assemblages from the Sahtu Settlement Area, Northwest Territories, Canada K. Vinke A.S. Medeiros D.J. Giberson 2015-09-01 https://doi.org/10.1139/as-2015-0006 https://doaj.org/article/97644479494c4be1949bff582e4a6447 en fr eng fre Canadian Science Publishing doi:10.1139/as-2015-0006 2368-7460 https://doaj.org/article/97644479494c4be1949bff582e4a6447 undefined Arctic Science, Vol 1, Iss 1, Pp 9-25 (2015) aquatic diversity subarctic sahtu settlement region benthic invertebrates geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2015 fttriple https://doi.org/10.1139/as-2015-0006 2023-01-22T19:14:40Z Benthic invertebrate assemblages were studied across four streams in the Sahtu Settlement Region of the Northwest Territories between July 2010 and October 2011 to provide information on biotic composition and associations with habitat and temporal factors. Overall diversity was similar for all streams, although taxonomic composition varied among the streams. Within streams, richness was highest in riffle and snag (woody debris) habitats and lowest in pools and leafpacks. A substantial portion of taxa (∼25%) would have been missed if only riffles had been sampled. Nearly 88% of individuals belonged to eight taxa, with >60% of individuals found in only two families (Chironomidae and Baetidae). While high within-family diversity was observed, samples were also characterized by large numbers of rare taxa, with large temporal differences in abundances. Future benthic assessments in northern streams would benefit from increased sampling effort to ensure representative samples for comparing streams or sites and approaches that target dominant families in the north (e.g., Chironomidae), which can provide a great deal of information on biodiversity when examined at the generic level. Likewise, further analysis of the seasonal compositional turnover for some assemblages may be necessary to distinguish anthropogenic responses from natural variability. Article in Journal/Newspaper Arctic Northwest Territories Subarctic Unknown Canada Northwest Territories Snag ENVELOPE(-140.371,-140.371,62.399,62.399) Arctic Science 1 1 9 25 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English French |
topic |
aquatic diversity subarctic sahtu settlement region benthic invertebrates geo envir |
spellingShingle |
aquatic diversity subarctic sahtu settlement region benthic invertebrates geo envir K. Vinke A.S. Medeiros D.J. Giberson Diversity patterns in subarctic stream benthic invertebrate assemblages from the Sahtu Settlement Area, Northwest Territories, Canada |
topic_facet |
aquatic diversity subarctic sahtu settlement region benthic invertebrates geo envir |
description |
Benthic invertebrate assemblages were studied across four streams in the Sahtu Settlement Region of the Northwest Territories between July 2010 and October 2011 to provide information on biotic composition and associations with habitat and temporal factors. Overall diversity was similar for all streams, although taxonomic composition varied among the streams. Within streams, richness was highest in riffle and snag (woody debris) habitats and lowest in pools and leafpacks. A substantial portion of taxa (∼25%) would have been missed if only riffles had been sampled. Nearly 88% of individuals belonged to eight taxa, with >60% of individuals found in only two families (Chironomidae and Baetidae). While high within-family diversity was observed, samples were also characterized by large numbers of rare taxa, with large temporal differences in abundances. Future benthic assessments in northern streams would benefit from increased sampling effort to ensure representative samples for comparing streams or sites and approaches that target dominant families in the north (e.g., Chironomidae), which can provide a great deal of information on biodiversity when examined at the generic level. Likewise, further analysis of the seasonal compositional turnover for some assemblages may be necessary to distinguish anthropogenic responses from natural variability. |
format |
Article in Journal/Newspaper |
author |
K. Vinke A.S. Medeiros D.J. Giberson |
author_facet |
K. Vinke A.S. Medeiros D.J. Giberson |
author_sort |
K. Vinke |
title |
Diversity patterns in subarctic stream benthic invertebrate assemblages from the Sahtu Settlement Area, Northwest Territories, Canada |
title_short |
Diversity patterns in subarctic stream benthic invertebrate assemblages from the Sahtu Settlement Area, Northwest Territories, Canada |
title_full |
Diversity patterns in subarctic stream benthic invertebrate assemblages from the Sahtu Settlement Area, Northwest Territories, Canada |
title_fullStr |
Diversity patterns in subarctic stream benthic invertebrate assemblages from the Sahtu Settlement Area, Northwest Territories, Canada |
title_full_unstemmed |
Diversity patterns in subarctic stream benthic invertebrate assemblages from the Sahtu Settlement Area, Northwest Territories, Canada |
title_sort |
diversity patterns in subarctic stream benthic invertebrate assemblages from the sahtu settlement area, northwest territories, canada |
publisher |
Canadian Science Publishing |
publishDate |
2015 |
url |
https://doi.org/10.1139/as-2015-0006 https://doaj.org/article/97644479494c4be1949bff582e4a6447 |
long_lat |
ENVELOPE(-140.371,-140.371,62.399,62.399) |
geographic |
Canada Northwest Territories Snag |
geographic_facet |
Canada Northwest Territories Snag |
genre |
Arctic Northwest Territories Subarctic |
genre_facet |
Arctic Northwest Territories Subarctic |
op_source |
Arctic Science, Vol 1, Iss 1, Pp 9-25 (2015) |
op_relation |
doi:10.1139/as-2015-0006 2368-7460 https://doaj.org/article/97644479494c4be1949bff582e4a6447 |
op_rights |
undefined |
op_doi |
https://doi.org/10.1139/as-2015-0006 |
container_title |
Arctic Science |
container_volume |
1 |
container_issue |
1 |
container_start_page |
9 |
op_container_end_page |
25 |
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1766294973597089792 |