Estimation of in-river fish passage using a combination of transect and stationary hydroacoustic sampling
We describe a hydroacoustic technique that uses both transect and stationary sampling to estimate numbers of fish migrating in a river. The technique includes refinements and additions to one developed by the International Pacific Salmon Fisheries Commission to estimate sockeye (Oncorhynchus nerka)...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Canadian Science Publishing
1995
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Online Access: | http://dx.doi.org/10.1139/f95-034 http://www.nrcresearchpress.com/doi/pdf/10.1139/f95-034 |
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crcansciencepubl:10.1139/f95-034 2023-12-17T10:48:10+01:00 Estimation of in-river fish passage using a combination of transect and stationary hydroacoustic sampling Banneheka, Sarath G. Routledge, Richard D. Guthrie, Ian C. Woodey, James C. 1995 http://dx.doi.org/10.1139/f95-034 http://www.nrcresearchpress.com/doi/pdf/10.1139/f95-034 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 52, issue 2, page 335-343 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1995 crcansciencepubl https://doi.org/10.1139/f95-034 2023-11-19T13:39:17Z We describe a hydroacoustic technique that uses both transect and stationary sampling to estimate numbers of fish migrating in a river. The technique includes refinements and additions to one developed by the International Pacific Salmon Fisheries Commission to estimate sockeye (Oncorhynchus nerka) and pink salmon (Oncorhynchus gorbuscha) migrations in the Fraser River. The estimator is independent of the actual shape of the effective acoustic beam and the distribution of target strengths when the same hydroacoustic equipment and settings are used for both types of soundings. Thus, the method shares with the duration-in-beam method the advantages that equipment calibration requirements are minimal and that estimates remain valid when fish sizes vary over a wide range. We also provide formulae for the variance of the abundance estimate and illustrate the methods with example calculations of daily fish passage in the Fraser River at Mission, British Columbia. A correction procedure is proposed to compensate for bias arising from violation of the assumption that fish speed is negligible relative to boat speed. Article in Journal/Newspaper Oncorhynchus gorbuscha Pink salmon Canadian Science Publishing (via Crossref) Pacific Sockeye ENVELOPE(-130.143,-130.143,54.160,54.160) Fraser River ENVELOPE(-62.243,-62.243,56.619,56.619) Canadian Journal of Fisheries and Aquatic Sciences 52 2 335 343 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Banneheka, Sarath G. Routledge, Richard D. Guthrie, Ian C. Woodey, James C. Estimation of in-river fish passage using a combination of transect and stationary hydroacoustic sampling |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
We describe a hydroacoustic technique that uses both transect and stationary sampling to estimate numbers of fish migrating in a river. The technique includes refinements and additions to one developed by the International Pacific Salmon Fisheries Commission to estimate sockeye (Oncorhynchus nerka) and pink salmon (Oncorhynchus gorbuscha) migrations in the Fraser River. The estimator is independent of the actual shape of the effective acoustic beam and the distribution of target strengths when the same hydroacoustic equipment and settings are used for both types of soundings. Thus, the method shares with the duration-in-beam method the advantages that equipment calibration requirements are minimal and that estimates remain valid when fish sizes vary over a wide range. We also provide formulae for the variance of the abundance estimate and illustrate the methods with example calculations of daily fish passage in the Fraser River at Mission, British Columbia. A correction procedure is proposed to compensate for bias arising from violation of the assumption that fish speed is negligible relative to boat speed. |
format |
Article in Journal/Newspaper |
author |
Banneheka, Sarath G. Routledge, Richard D. Guthrie, Ian C. Woodey, James C. |
author_facet |
Banneheka, Sarath G. Routledge, Richard D. Guthrie, Ian C. Woodey, James C. |
author_sort |
Banneheka, Sarath G. |
title |
Estimation of in-river fish passage using a combination of transect and stationary hydroacoustic sampling |
title_short |
Estimation of in-river fish passage using a combination of transect and stationary hydroacoustic sampling |
title_full |
Estimation of in-river fish passage using a combination of transect and stationary hydroacoustic sampling |
title_fullStr |
Estimation of in-river fish passage using a combination of transect and stationary hydroacoustic sampling |
title_full_unstemmed |
Estimation of in-river fish passage using a combination of transect and stationary hydroacoustic sampling |
title_sort |
estimation of in-river fish passage using a combination of transect and stationary hydroacoustic sampling |
publisher |
Canadian Science Publishing |
publishDate |
1995 |
url |
http://dx.doi.org/10.1139/f95-034 http://www.nrcresearchpress.com/doi/pdf/10.1139/f95-034 |
long_lat |
ENVELOPE(-130.143,-130.143,54.160,54.160) ENVELOPE(-62.243,-62.243,56.619,56.619) |
geographic |
Pacific Sockeye Fraser River |
geographic_facet |
Pacific Sockeye Fraser River |
genre |
Oncorhynchus gorbuscha Pink salmon |
genre_facet |
Oncorhynchus gorbuscha Pink salmon |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 52, issue 2, page 335-343 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f95-034 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
52 |
container_issue |
2 |
container_start_page |
335 |
op_container_end_page |
343 |
_version_ |
1785572280519098368 |