Assessing Responses of Fish to Habitat Enhancement in Barrenlands Streams of the Northwest Territories
Abstract We examined the effectiveness of three fishpasses (two gabion‐style pool–weir fishpasses and one nature‐like choke‐and‐pool fishpass) at enhancing connectivity among three small, headwater lakes as part of a fish habitat compensation project in the Barrenlands region of the Northwest Territ...
Published in: | North American Journal of Fisheries Management |
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crwiley:10.1080/02755947.2015.1044626 2024-06-02T08:00:12+00:00 Assessing Responses of Fish to Habitat Enhancement in Barrenlands Streams of the Northwest Territories Cahill, Christopher L. Erwin, Andrea C. Howland, Kimberly L. Hulsman, Mark F. Lunn, Brianne D. Noddin, Fred Tonn, William M. Baki, Abul Basar Courtice, Gregory Zhu, David Z. 2015 http://dx.doi.org/10.1080/02755947.2015.1044626 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1080/02755947.2015.1044626 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor North American Journal of Fisheries Management volume 35, issue 4, page 755-764 ISSN 0275-5947 1548-8675 journal-article 2015 crwiley https://doi.org/10.1080/02755947.2015.1044626 2024-05-03T10:45:10Z Abstract We examined the effectiveness of three fishpasses (two gabion‐style pool–weir fishpasses and one nature‐like choke‐and‐pool fishpass) at enhancing connectivity among three small, headwater lakes as part of a fish habitat compensation project in the Barrenlands region of the Northwest Territories. We quantified fish attraction and passage efficiency of fishpasses using PIT antennae, and compared fish use of fishpasses to reference streams using visual and electrofishing surveys for 1 year before and 2 years after their construction. We did not detect, observe, or capture any fish in either of the gabion‐style pool–weir fishpasses during the first year after construction, and these two fishpasses were subsequently retrofitted to improve their hydraulic performance. After retrofits were completed, we still did not detect any tagged fish (≥150 mm) migrating through the two fishpasses using PIT telemetry, but identified some small fish moving downstream through these fishpasses during visual and electrofishing surveys. Conversely, we detected tagged Arctic Grayling Thymallus arcticus migrating upstream and downstream through the nature‐like choke‐and‐pool fishpass during both postenhancement years, and also encountered fish throughout this fishpass during visual and electrofishing surveys. Compared with reference streams, gabion‐weir fishpasses limited fish movement and use even after modification, whereas the nature‐like fishpass successfully facilitated fish movement and use. We recommend against using gabion‐style pool–weir fishpasses in Barrenlands headwater lake–stream systems, particularly when stream flow is limited, and suggest future projects aimed at enhancing lake–stream connectivity explore nature‐like fishpass designs in an experimental management framework. Article in Journal/Newspaper Arctic grayling Arctic Northwest Territories Thymallus arcticus Wiley Online Library Arctic Northwest Territories Weir ENVELOPE(177.167,177.167,-84.983,-84.983) North American Journal of Fisheries Management 35 4 755 764 |
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Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract We examined the effectiveness of three fishpasses (two gabion‐style pool–weir fishpasses and one nature‐like choke‐and‐pool fishpass) at enhancing connectivity among three small, headwater lakes as part of a fish habitat compensation project in the Barrenlands region of the Northwest Territories. We quantified fish attraction and passage efficiency of fishpasses using PIT antennae, and compared fish use of fishpasses to reference streams using visual and electrofishing surveys for 1 year before and 2 years after their construction. We did not detect, observe, or capture any fish in either of the gabion‐style pool–weir fishpasses during the first year after construction, and these two fishpasses were subsequently retrofitted to improve their hydraulic performance. After retrofits were completed, we still did not detect any tagged fish (≥150 mm) migrating through the two fishpasses using PIT telemetry, but identified some small fish moving downstream through these fishpasses during visual and electrofishing surveys. Conversely, we detected tagged Arctic Grayling Thymallus arcticus migrating upstream and downstream through the nature‐like choke‐and‐pool fishpass during both postenhancement years, and also encountered fish throughout this fishpass during visual and electrofishing surveys. Compared with reference streams, gabion‐weir fishpasses limited fish movement and use even after modification, whereas the nature‐like fishpass successfully facilitated fish movement and use. We recommend against using gabion‐style pool–weir fishpasses in Barrenlands headwater lake–stream systems, particularly when stream flow is limited, and suggest future projects aimed at enhancing lake–stream connectivity explore nature‐like fishpass designs in an experimental management framework. |
format |
Article in Journal/Newspaper |
author |
Cahill, Christopher L. Erwin, Andrea C. Howland, Kimberly L. Hulsman, Mark F. Lunn, Brianne D. Noddin, Fred Tonn, William M. Baki, Abul Basar Courtice, Gregory Zhu, David Z. |
spellingShingle |
Cahill, Christopher L. Erwin, Andrea C. Howland, Kimberly L. Hulsman, Mark F. Lunn, Brianne D. Noddin, Fred Tonn, William M. Baki, Abul Basar Courtice, Gregory Zhu, David Z. Assessing Responses of Fish to Habitat Enhancement in Barrenlands Streams of the Northwest Territories |
author_facet |
Cahill, Christopher L. Erwin, Andrea C. Howland, Kimberly L. Hulsman, Mark F. Lunn, Brianne D. Noddin, Fred Tonn, William M. Baki, Abul Basar Courtice, Gregory Zhu, David Z. |
author_sort |
Cahill, Christopher L. |
title |
Assessing Responses of Fish to Habitat Enhancement in Barrenlands Streams of the Northwest Territories |
title_short |
Assessing Responses of Fish to Habitat Enhancement in Barrenlands Streams of the Northwest Territories |
title_full |
Assessing Responses of Fish to Habitat Enhancement in Barrenlands Streams of the Northwest Territories |
title_fullStr |
Assessing Responses of Fish to Habitat Enhancement in Barrenlands Streams of the Northwest Territories |
title_full_unstemmed |
Assessing Responses of Fish to Habitat Enhancement in Barrenlands Streams of the Northwest Territories |
title_sort |
assessing responses of fish to habitat enhancement in barrenlands streams of the northwest territories |
publisher |
Wiley |
publishDate |
2015 |
url |
http://dx.doi.org/10.1080/02755947.2015.1044626 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1080/02755947.2015.1044626 |
long_lat |
ENVELOPE(177.167,177.167,-84.983,-84.983) |
geographic |
Arctic Northwest Territories Weir |
geographic_facet |
Arctic Northwest Territories Weir |
genre |
Arctic grayling Arctic Northwest Territories Thymallus arcticus |
genre_facet |
Arctic grayling Arctic Northwest Territories Thymallus arcticus |
op_source |
North American Journal of Fisheries Management volume 35, issue 4, page 755-764 ISSN 0275-5947 1548-8675 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1080/02755947.2015.1044626 |
container_title |
North American Journal of Fisheries Management |
container_volume |
35 |
container_issue |
4 |
container_start_page |
755 |
op_container_end_page |
764 |
_version_ |
1800744189890134016 |