Studying the relationship between spatial fish distributions and trawl catches
We propose an approach for studying the relationship between spatial fish distributions and the distribution of numbers in trawl catches. Individual spatial fish distributions are derived from acoustics data collected with a drifting buoy by tracking individual fish. The spatial distribution of thes...
Main Authors: | , , , |
---|---|
Format: | Report |
Language: | English |
Published: |
ICES
2004
|
Subjects: | |
Online Access: | http://hdl.handle.net/11250/106427 |
id |
ftimr:oai:imr.brage.unit.no:11250/106427 |
---|---|
record_format |
openpolar |
spelling |
ftimr:oai:imr.brage.unit.no:11250/106427 2023-05-15T15:38:52+02:00 Studying the relationship between spatial fish distributions and trawl catches Trenkel, Verena M. Godø, Olav Rune Handegard, Nils Olav Patel, Ruben 2004 application/pdf http://hdl.handle.net/11250/106427 eng eng ICES ICES CM Documents;2004/R:26 This report is not to be cited without prior reference to the authors http://hdl.handle.net/11250/106427 13 s. catchability fangstpotensiale distribution utbredelse acoustics akustikk VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Catch: 925 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Social science: 200::Library and information science: 320::Knowledge retrieval and organization: 323 Working paper 2004 ftimr 2021-09-23T20:15:20Z We propose an approach for studying the relationship between spatial fish distributions and the distribution of numbers in trawl catches. Individual spatial fish distributions are derived from acoustics data collected with a drifting buoy by tracking individual fish. The spatial distribution of these individual fish is then characterised using Generalised Additive Models (GAM). The catch distribution is obtained empirically. A model relating the spatial fish distribution and the catch distribution is then developped. This paper concentrates on the first part of the approach, the identification of the spatial fish distribution from acoustic data, which is illustrated for a demersal example from the Barents sea including mainly cod (Gadus morhua) and haddock (Melanogrammus aeglefinus). Report Barents Sea Gadus morhua Institute for Marine Research: Brage IMR Barents Sea Gam ENVELOPE(-57.955,-57.955,-61.923,-61.923) |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
topic |
catchability fangstpotensiale distribution utbredelse acoustics akustikk VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Catch: 925 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Social science: 200::Library and information science: 320::Knowledge retrieval and organization: 323 |
spellingShingle |
catchability fangstpotensiale distribution utbredelse acoustics akustikk VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Catch: 925 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Social science: 200::Library and information science: 320::Knowledge retrieval and organization: 323 Trenkel, Verena M. Godø, Olav Rune Handegard, Nils Olav Patel, Ruben Studying the relationship between spatial fish distributions and trawl catches |
topic_facet |
catchability fangstpotensiale distribution utbredelse acoustics akustikk VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Catch: 925 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Social science: 200::Library and information science: 320::Knowledge retrieval and organization: 323 |
description |
We propose an approach for studying the relationship between spatial fish distributions and the distribution of numbers in trawl catches. Individual spatial fish distributions are derived from acoustics data collected with a drifting buoy by tracking individual fish. The spatial distribution of these individual fish is then characterised using Generalised Additive Models (GAM). The catch distribution is obtained empirically. A model relating the spatial fish distribution and the catch distribution is then developped. This paper concentrates on the first part of the approach, the identification of the spatial fish distribution from acoustic data, which is illustrated for a demersal example from the Barents sea including mainly cod (Gadus morhua) and haddock (Melanogrammus aeglefinus). |
format |
Report |
author |
Trenkel, Verena M. Godø, Olav Rune Handegard, Nils Olav Patel, Ruben |
author_facet |
Trenkel, Verena M. Godø, Olav Rune Handegard, Nils Olav Patel, Ruben |
author_sort |
Trenkel, Verena M. |
title |
Studying the relationship between spatial fish distributions and trawl catches |
title_short |
Studying the relationship between spatial fish distributions and trawl catches |
title_full |
Studying the relationship between spatial fish distributions and trawl catches |
title_fullStr |
Studying the relationship between spatial fish distributions and trawl catches |
title_full_unstemmed |
Studying the relationship between spatial fish distributions and trawl catches |
title_sort |
studying the relationship between spatial fish distributions and trawl catches |
publisher |
ICES |
publishDate |
2004 |
url |
http://hdl.handle.net/11250/106427 |
long_lat |
ENVELOPE(-57.955,-57.955,-61.923,-61.923) |
geographic |
Barents Sea Gam |
geographic_facet |
Barents Sea Gam |
genre |
Barents Sea Gadus morhua |
genre_facet |
Barents Sea Gadus morhua |
op_source |
13 s. |
op_relation |
ICES CM Documents;2004/R:26 This report is not to be cited without prior reference to the authors http://hdl.handle.net/11250/106427 |
_version_ |
1766370259520978944 |