Estimating and decomposing total uncertainty for survey-based abundance estimates of Norwegian spring-spawning herring
Abstract Løland, A., Aldrin, M., Ona, E., Hjellvik, V., and Holst, J. C. 2007. Estimating and decomposing total uncertainty for survey‐based abundance estimates of Norwegian spring‐spawning herring. – ICES Journal of Marine Science, 64: –. A method is developed to quantify the uncertainty of abundan...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsm116 http://academic.oup.com/icesjms/article-pdf/64/7/1302/29152490/fsm116.pdf |
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croxfordunivpr:10.1093/icesjms/fsm116 2023-08-15T12:42:37+02:00 Estimating and decomposing total uncertainty for survey-based abundance estimates of Norwegian spring-spawning herring Løland, Anders Aldrin, Magne Ona, Egil Hjellvik, Vidar Holst, Jens Christian 2007 http://dx.doi.org/10.1093/icesjms/fsm116 http://academic.oup.com/icesjms/article-pdf/64/7/1302/29152490/fsm116.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 64, issue 7, page 1302-1312 ISSN 1095-9289 1054-3139 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2007 croxfordunivpr https://doi.org/10.1093/icesjms/fsm116 2023-07-21T11:37:20Z Abstract Løland, A., Aldrin, M., Ona, E., Hjellvik, V., and Holst, J. C. 2007. Estimating and decomposing total uncertainty for survey‐based abundance estimates of Norwegian spring‐spawning herring. – ICES Journal of Marine Science, 64: –. A method is developed to quantify the uncertainty of abundance and age-specific abundance estimates of Norwegian spring-spawning herring, accounting for the combined effect of several error sources. We present an abundance estimate adjusted for vessel avoidance, acoustic shadowing, and depth-dependent target strength, and highlight the potentially dramatic combined effect of these adjustments. Uncertainty in this estimate is affected by the precision of the adjustment formulae as well as by the sampling errors in acoustic and trawl measurements. This total uncertainty is decomposed into contributions from each source. Here, the method is applied to data from surveys on the overwintering stock in the Vestfjord system and off Vesteraalen in northern Norway in November/December of the years 2001–2004. Article in Journal/Newspaper Northern Norway Oxford University Press (via Crossref) Norway Vestfjord ENVELOPE(-28.750,-28.750,70.500,70.500) ICES Journal of Marine Science 64 7 1302 1312 |
institution |
Open Polar |
collection |
Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography Løland, Anders Aldrin, Magne Ona, Egil Hjellvik, Vidar Holst, Jens Christian Estimating and decomposing total uncertainty for survey-based abundance estimates of Norwegian spring-spawning herring |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Løland, A., Aldrin, M., Ona, E., Hjellvik, V., and Holst, J. C. 2007. Estimating and decomposing total uncertainty for survey‐based abundance estimates of Norwegian spring‐spawning herring. – ICES Journal of Marine Science, 64: –. A method is developed to quantify the uncertainty of abundance and age-specific abundance estimates of Norwegian spring-spawning herring, accounting for the combined effect of several error sources. We present an abundance estimate adjusted for vessel avoidance, acoustic shadowing, and depth-dependent target strength, and highlight the potentially dramatic combined effect of these adjustments. Uncertainty in this estimate is affected by the precision of the adjustment formulae as well as by the sampling errors in acoustic and trawl measurements. This total uncertainty is decomposed into contributions from each source. Here, the method is applied to data from surveys on the overwintering stock in the Vestfjord system and off Vesteraalen in northern Norway in November/December of the years 2001–2004. |
format |
Article in Journal/Newspaper |
author |
Løland, Anders Aldrin, Magne Ona, Egil Hjellvik, Vidar Holst, Jens Christian |
author_facet |
Løland, Anders Aldrin, Magne Ona, Egil Hjellvik, Vidar Holst, Jens Christian |
author_sort |
Løland, Anders |
title |
Estimating and decomposing total uncertainty for survey-based abundance estimates of Norwegian spring-spawning herring |
title_short |
Estimating and decomposing total uncertainty for survey-based abundance estimates of Norwegian spring-spawning herring |
title_full |
Estimating and decomposing total uncertainty for survey-based abundance estimates of Norwegian spring-spawning herring |
title_fullStr |
Estimating and decomposing total uncertainty for survey-based abundance estimates of Norwegian spring-spawning herring |
title_full_unstemmed |
Estimating and decomposing total uncertainty for survey-based abundance estimates of Norwegian spring-spawning herring |
title_sort |
estimating and decomposing total uncertainty for survey-based abundance estimates of norwegian spring-spawning herring |
publisher |
Oxford University Press (OUP) |
publishDate |
2007 |
url |
http://dx.doi.org/10.1093/icesjms/fsm116 http://academic.oup.com/icesjms/article-pdf/64/7/1302/29152490/fsm116.pdf |
long_lat |
ENVELOPE(-28.750,-28.750,70.500,70.500) |
geographic |
Norway Vestfjord |
geographic_facet |
Norway Vestfjord |
genre |
Northern Norway |
genre_facet |
Northern Norway |
op_source |
ICES Journal of Marine Science volume 64, issue 7, page 1302-1312 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fsm116 |
container_title |
ICES Journal of Marine Science |
container_volume |
64 |
container_issue |
7 |
container_start_page |
1302 |
op_container_end_page |
1312 |
_version_ |
1774296872684355584 |