A combined acoustic and trawl survey for efficiently estimating fish abundance
When fish are patchily distributed, unstratified trawl surveys give highly variable abundance estimates. If the patches are small and mobile, it is impractical to use pre-stratified or multi-stage adaptive designs to reduce variability. Based on recent trawl surveys for mackerel icefish Champsocepha...
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1996
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Online Access: | http://nora.nerc.ac.uk/id/eprint/515086/ https://doi.org/10.1016/0165-7836(95)00404-1 |
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ftnerc:oai:nora.nerc.ac.uk:515086 2023-05-15T16:42:07+02:00 A combined acoustic and trawl survey for efficiently estimating fish abundance Everson, Inigo Bravington, Mark Goss, Catherine 1996-04 http://nora.nerc.ac.uk/id/eprint/515086/ https://doi.org/10.1016/0165-7836(95)00404-1 unknown Elsevier Everson, Inigo; Bravington, Mark; Goss, Catherine. 1996 A combined acoustic and trawl survey for efficiently estimating fish abundance. Fisheries Research, 26 (1-2). 75-91. https://doi.org/10.1016/0165-7836(95)00404-1 <https://doi.org/10.1016/0165-7836(95)00404-1> Publication - Article PeerReviewed 1996 ftnerc https://doi.org/10.1016/0165-7836(95)00404-1 2023-02-04T19:43:51Z When fish are patchily distributed, unstratified trawl surveys give highly variable abundance estimates. If the patches are small and mobile, it is impractical to use pre-stratified or multi-stage adaptive designs to reduce variability. Based on recent trawl surveys for mackerel icefish Champsocephalus gunnari, we have modified the survey design and analysis to reduce estimation variance at minimal cost, using concomitant qualitative acoustic data. We have also developed new confidence interval procedures that should be accurate even for small samples. In computer simulations, the new method substantially outperformed a standard trawl survey. Article in Journal/Newspaper Icefish Natural Environment Research Council: NERC Open Research Archive Fisheries Research 26 1-2 75 91 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
When fish are patchily distributed, unstratified trawl surveys give highly variable abundance estimates. If the patches are small and mobile, it is impractical to use pre-stratified or multi-stage adaptive designs to reduce variability. Based on recent trawl surveys for mackerel icefish Champsocephalus gunnari, we have modified the survey design and analysis to reduce estimation variance at minimal cost, using concomitant qualitative acoustic data. We have also developed new confidence interval procedures that should be accurate even for small samples. In computer simulations, the new method substantially outperformed a standard trawl survey. |
format |
Article in Journal/Newspaper |
author |
Everson, Inigo Bravington, Mark Goss, Catherine |
spellingShingle |
Everson, Inigo Bravington, Mark Goss, Catherine A combined acoustic and trawl survey for efficiently estimating fish abundance |
author_facet |
Everson, Inigo Bravington, Mark Goss, Catherine |
author_sort |
Everson, Inigo |
title |
A combined acoustic and trawl survey for efficiently estimating fish abundance |
title_short |
A combined acoustic and trawl survey for efficiently estimating fish abundance |
title_full |
A combined acoustic and trawl survey for efficiently estimating fish abundance |
title_fullStr |
A combined acoustic and trawl survey for efficiently estimating fish abundance |
title_full_unstemmed |
A combined acoustic and trawl survey for efficiently estimating fish abundance |
title_sort |
combined acoustic and trawl survey for efficiently estimating fish abundance |
publisher |
Elsevier |
publishDate |
1996 |
url |
http://nora.nerc.ac.uk/id/eprint/515086/ https://doi.org/10.1016/0165-7836(95)00404-1 |
genre |
Icefish |
genre_facet |
Icefish |
op_relation |
Everson, Inigo; Bravington, Mark; Goss, Catherine. 1996 A combined acoustic and trawl survey for efficiently estimating fish abundance. Fisheries Research, 26 (1-2). 75-91. https://doi.org/10.1016/0165-7836(95)00404-1 <https://doi.org/10.1016/0165-7836(95)00404-1> |
op_doi |
https://doi.org/10.1016/0165-7836(95)00404-1 |
container_title |
Fisheries Research |
container_volume |
26 |
container_issue |
1-2 |
container_start_page |
75 |
op_container_end_page |
91 |
_version_ |
1766032556666388480 |