Occupancy of young-of-year Arctic grayling (Thymallus arcticus) in Barrenland streams
Abstract Arctic grayling ( Thymallus arcticus ) is an iconic fish species that is present across the remote subarctic Barrenlands, yet our lack of understanding of their distributional patterns constrains predictions of anthropogenic effects on Barrenland populations. These adfluvial fish rely on se...
Published in: | Hydrobiologia |
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Language: | English |
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Springer Science and Business Media LLC
2021
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Online Access: | http://dx.doi.org/10.1007/s10750-021-04742-3 https://link.springer.com/content/pdf/10.1007/s10750-021-04742-3.pdf https://link.springer.com/article/10.1007/s10750-021-04742-3/fulltext.html |
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crspringernat:10.1007/s10750-021-04742-3 2023-05-15T14:31:17+02:00 Occupancy of young-of-year Arctic grayling (Thymallus arcticus) in Barrenland streams Ellenor, Jared R. Cott, Peter A. Swanson, Heidi K. Agnico Eagle Mines Limited Polar Knowledge Canada Northern Scientific Training Program 2021 http://dx.doi.org/10.1007/s10750-021-04742-3 https://link.springer.com/content/pdf/10.1007/s10750-021-04742-3.pdf https://link.springer.com/article/10.1007/s10750-021-04742-3/fulltext.html en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Hydrobiologia ISSN 0018-8158 1573-5117 Aquatic Science journal-article 2021 crspringernat https://doi.org/10.1007/s10750-021-04742-3 2022-01-04T07:25:29Z Abstract Arctic grayling ( Thymallus arcticus ) is an iconic fish species that is present across the remote subarctic Barrenlands, yet our lack of understanding of their distributional patterns constrains predictions of anthropogenic effects on Barrenland populations. These adfluvial fish rely on seasonal lake-stream connections to migrate, spawn, and rear. We address knowledge gaps on what Barrenland stream attributes are suitable for rearing young-of-year Arctic grayling. Visual surveys of young-of-year Arctic grayling were conducted in 48 streams near Baker Lake, Nunavut, Canada. Occupancy modeling was used to relate stream habitat and landscape variables to fish presence/absence. The best predictors of occupancy were total area of contributing upstream lakes and landcover (upland/lowland); stream basins with larger contributing upstream lake area and more lowland cover were more likely to be occupied. Results suggest that occupancy reflects reliability of stream connectivity throughout the open water season and across years. The occupancy model developed here can adequately predict stream suitability for young-of-year Arctic grayling using lake area and land classification data that are remotely accessed. This may lessen the considerable financial and logistical constraints of conducting field research on Arctic grayling in the vast Barrenlands and facilitate more directed field programs to inform conservation and mitigation plans. Article in Journal/Newspaper Arctic grayling Arctic Baker Lake Nunavut Subarctic Thymallus arcticus Springer Nature (via Crossref) Arctic Canada Nunavut Hydrobiologia 849 3 725 745 |
institution |
Open Polar |
collection |
Springer Nature (via Crossref) |
op_collection_id |
crspringernat |
language |
English |
topic |
Aquatic Science |
spellingShingle |
Aquatic Science Ellenor, Jared R. Cott, Peter A. Swanson, Heidi K. Occupancy of young-of-year Arctic grayling (Thymallus arcticus) in Barrenland streams |
topic_facet |
Aquatic Science |
description |
Abstract Arctic grayling ( Thymallus arcticus ) is an iconic fish species that is present across the remote subarctic Barrenlands, yet our lack of understanding of their distributional patterns constrains predictions of anthropogenic effects on Barrenland populations. These adfluvial fish rely on seasonal lake-stream connections to migrate, spawn, and rear. We address knowledge gaps on what Barrenland stream attributes are suitable for rearing young-of-year Arctic grayling. Visual surveys of young-of-year Arctic grayling were conducted in 48 streams near Baker Lake, Nunavut, Canada. Occupancy modeling was used to relate stream habitat and landscape variables to fish presence/absence. The best predictors of occupancy were total area of contributing upstream lakes and landcover (upland/lowland); stream basins with larger contributing upstream lake area and more lowland cover were more likely to be occupied. Results suggest that occupancy reflects reliability of stream connectivity throughout the open water season and across years. The occupancy model developed here can adequately predict stream suitability for young-of-year Arctic grayling using lake area and land classification data that are remotely accessed. This may lessen the considerable financial and logistical constraints of conducting field research on Arctic grayling in the vast Barrenlands and facilitate more directed field programs to inform conservation and mitigation plans. |
author2 |
Agnico Eagle Mines Limited Polar Knowledge Canada Northern Scientific Training Program |
format |
Article in Journal/Newspaper |
author |
Ellenor, Jared R. Cott, Peter A. Swanson, Heidi K. |
author_facet |
Ellenor, Jared R. Cott, Peter A. Swanson, Heidi K. |
author_sort |
Ellenor, Jared R. |
title |
Occupancy of young-of-year Arctic grayling (Thymallus arcticus) in Barrenland streams |
title_short |
Occupancy of young-of-year Arctic grayling (Thymallus arcticus) in Barrenland streams |
title_full |
Occupancy of young-of-year Arctic grayling (Thymallus arcticus) in Barrenland streams |
title_fullStr |
Occupancy of young-of-year Arctic grayling (Thymallus arcticus) in Barrenland streams |
title_full_unstemmed |
Occupancy of young-of-year Arctic grayling (Thymallus arcticus) in Barrenland streams |
title_sort |
occupancy of young-of-year arctic grayling (thymallus arcticus) in barrenland streams |
publisher |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
http://dx.doi.org/10.1007/s10750-021-04742-3 https://link.springer.com/content/pdf/10.1007/s10750-021-04742-3.pdf https://link.springer.com/article/10.1007/s10750-021-04742-3/fulltext.html |
geographic |
Arctic Canada Nunavut |
geographic_facet |
Arctic Canada Nunavut |
genre |
Arctic grayling Arctic Baker Lake Nunavut Subarctic Thymallus arcticus |
genre_facet |
Arctic grayling Arctic Baker Lake Nunavut Subarctic Thymallus arcticus |
op_source |
Hydrobiologia ISSN 0018-8158 1573-5117 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s10750-021-04742-3 |
container_title |
Hydrobiologia |
container_volume |
849 |
container_issue |
3 |
container_start_page |
725 |
op_container_end_page |
745 |
_version_ |
1766304958027661312 |