Temperature preference and distribution of juvenile Arctic grayling (Thymallus arcticus) in the Williston watershed, British Columbia Canada.
The habitat requirements of juvenile Arctic grayling (Thymallus arcticus) were assessed in the Williston watershed, British Columbia, where the population is currently red-listed (critically imperiled). Temperature preferences of juvenile Arctic grayling was assessed behaviorally using a shuttlebox...
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University of Northern British Columbia
2011
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ftarcabc:oai:arcabc.ca:unbc_16159 2024-06-02T08:00:11+00:00 Temperature preference and distribution of juvenile Arctic grayling (Thymallus arcticus) in the Williston watershed, British Columbia Canada. Hawkshaw, Sarah C. F. (Author) Shrimpton, Mark (Thesis advisor) University of Northern British Columbia (Degree granting institution) 2011 electronic Number of pages in document: 102 https://arcabc.ca/islandora/object/unbc%3A16159 https://doi.org/10.24124/2011/bpgub795 English eng University of Northern British Columbia https://arcabc.ca/islandora/object/unbc%3A16159 uuid: 77336cee-1227-4dd4-bf37-8557b529c54e bib-number: MR75161 isbn: 978-0-494-75161-9 https://doi.org/10.24124/2011/bpgub795 lac: TC-BPGUB-795 Copyright retained by the author. http://rightsstatements.org/vocab/InC/1.0/ Arctic grayling -- Effect of temperature on -- British Columbia -- Williston Watershed Arctic grayling -- Habitat -- British Columbia -- Williston Watershed Arctic grayling -- British Columbia -- Williston Watershed -- Geographic distribution Arctic grayling -- Behavior -- British Columbia -- Williston Watershed QL638.S2 H39 2011 Text thesis 2011 ftarcabc https://doi.org/10.24124/2011/bpgub795 2024-05-06T00:30:44Z The habitat requirements of juvenile Arctic grayling (Thymallus arcticus) were assessed in the Williston watershed, British Columbia, where the population is currently red-listed (critically imperiled). Temperature preferences of juvenile Arctic grayling was assessed behaviorally using a shuttlebox system, and an information theoretic approach analysis of logistic regression models was used to evaluate the influence of environmental factors on the distribution of juvenile Arctic grayling throughout the Williston watershed. Temperature preference of juvenile Arctic grayling did not vary between the two tributaries in the watershed (p = 0.77) and the average preferred temperature was 16.84 ± 0.66 °C (n = 28). Comparisons of the preferred temperature to ambient water temperatures suggested that juvenile Arctic grayling will avoid areas where maximum water temperature is above the preferred temperature. There was a positive association between juvenile Arctic grayling occurrence and stream order (SO) and stream order multiplied by distance from the Williston reservoir (SDRxSO), as well as a negative association with the mean daily water temperature variance (varT) and average water temperature (aveT). Overall these findings suggest that large river systems are important juvenile Arctic grayling habitat and management decision should be made to ensure protection of this habitat throughout the range of this species. --P. ii. The original print copy of this thesis may be available here: http://wizard.unbc.ca/record=b1741116 Thesis Arctic grayling Arctic Thymallus arcticus Arca (BC's Digital Treasures) Arctic Canada British Columbia ENVELOPE(-125.003,-125.003,54.000,54.000) |
institution |
Open Polar |
collection |
Arca (BC's Digital Treasures) |
op_collection_id |
ftarcabc |
language |
English |
topic |
Arctic grayling -- Effect of temperature on -- British Columbia -- Williston Watershed Arctic grayling -- Habitat -- British Columbia -- Williston Watershed Arctic grayling -- British Columbia -- Williston Watershed -- Geographic distribution Arctic grayling -- Behavior -- British Columbia -- Williston Watershed QL638.S2 H39 2011 |
spellingShingle |
Arctic grayling -- Effect of temperature on -- British Columbia -- Williston Watershed Arctic grayling -- Habitat -- British Columbia -- Williston Watershed Arctic grayling -- British Columbia -- Williston Watershed -- Geographic distribution Arctic grayling -- Behavior -- British Columbia -- Williston Watershed QL638.S2 H39 2011 Temperature preference and distribution of juvenile Arctic grayling (Thymallus arcticus) in the Williston watershed, British Columbia Canada. |
topic_facet |
Arctic grayling -- Effect of temperature on -- British Columbia -- Williston Watershed Arctic grayling -- Habitat -- British Columbia -- Williston Watershed Arctic grayling -- British Columbia -- Williston Watershed -- Geographic distribution Arctic grayling -- Behavior -- British Columbia -- Williston Watershed QL638.S2 H39 2011 |
description |
The habitat requirements of juvenile Arctic grayling (Thymallus arcticus) were assessed in the Williston watershed, British Columbia, where the population is currently red-listed (critically imperiled). Temperature preferences of juvenile Arctic grayling was assessed behaviorally using a shuttlebox system, and an information theoretic approach analysis of logistic regression models was used to evaluate the influence of environmental factors on the distribution of juvenile Arctic grayling throughout the Williston watershed. Temperature preference of juvenile Arctic grayling did not vary between the two tributaries in the watershed (p = 0.77) and the average preferred temperature was 16.84 ± 0.66 °C (n = 28). Comparisons of the preferred temperature to ambient water temperatures suggested that juvenile Arctic grayling will avoid areas where maximum water temperature is above the preferred temperature. There was a positive association between juvenile Arctic grayling occurrence and stream order (SO) and stream order multiplied by distance from the Williston reservoir (SDRxSO), as well as a negative association with the mean daily water temperature variance (varT) and average water temperature (aveT). Overall these findings suggest that large river systems are important juvenile Arctic grayling habitat and management decision should be made to ensure protection of this habitat throughout the range of this species. --P. ii. The original print copy of this thesis may be available here: http://wizard.unbc.ca/record=b1741116 |
author2 |
Hawkshaw, Sarah C. F. (Author) Shrimpton, Mark (Thesis advisor) University of Northern British Columbia (Degree granting institution) |
format |
Thesis |
title |
Temperature preference and distribution of juvenile Arctic grayling (Thymallus arcticus) in the Williston watershed, British Columbia Canada. |
title_short |
Temperature preference and distribution of juvenile Arctic grayling (Thymallus arcticus) in the Williston watershed, British Columbia Canada. |
title_full |
Temperature preference and distribution of juvenile Arctic grayling (Thymallus arcticus) in the Williston watershed, British Columbia Canada. |
title_fullStr |
Temperature preference and distribution of juvenile Arctic grayling (Thymallus arcticus) in the Williston watershed, British Columbia Canada. |
title_full_unstemmed |
Temperature preference and distribution of juvenile Arctic grayling (Thymallus arcticus) in the Williston watershed, British Columbia Canada. |
title_sort |
temperature preference and distribution of juvenile arctic grayling (thymallus arcticus) in the williston watershed, british columbia canada. |
publisher |
University of Northern British Columbia |
publishDate |
2011 |
url |
https://arcabc.ca/islandora/object/unbc%3A16159 https://doi.org/10.24124/2011/bpgub795 |
long_lat |
ENVELOPE(-125.003,-125.003,54.000,54.000) |
geographic |
Arctic Canada British Columbia |
geographic_facet |
Arctic Canada British Columbia |
genre |
Arctic grayling Arctic Thymallus arcticus |
genre_facet |
Arctic grayling Arctic Thymallus arcticus |
op_relation |
https://arcabc.ca/islandora/object/unbc%3A16159 uuid: 77336cee-1227-4dd4-bf37-8557b529c54e bib-number: MR75161 isbn: 978-0-494-75161-9 https://doi.org/10.24124/2011/bpgub795 lac: TC-BPGUB-795 |
op_rights |
Copyright retained by the author. http://rightsstatements.org/vocab/InC/1.0/ |
op_doi |
https://doi.org/10.24124/2011/bpgub795 |
_version_ |
1800744180369063936 |