Catch composition and trends in the size of three commercial species from bottom trawlers operating in FAO fishing area 34 (NW Africa) during 2004-2012

In need of managing fisheries resources, a plethora of studies are globally conducted, using various indicators to determine the state of marine stocks. Eastern Central Atlantic (FAO fishing area 34) is among the richest areas of the planet in terms of diversity, and its waters are being exploited f...

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Main Author: Αναστασάκη-Λαμψακινού, Μαρία-Ιώ
Other Authors: Μπατζάκας, Ιωάννης
Language:English
Published: 2020
Subjects:
Online Access:http://hdl.handle.net/11610/20214
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author Αναστασάκη-Λαμψακινού, Μαρία-Ιώ
author2 Μπατζάκας, Ιωάννης
author_facet Μπατζάκας, Ιωάννης
Αναστασάκη-Λαμψακινού, Μαρία-Ιώ
author_sort Αναστασάκη-Λαμψακινού, Μαρία-Ιώ
collection DSpace
description In need of managing fisheries resources, a plethora of studies are globally conducted, using various indicators to determine the state of marine stocks. Eastern Central Atlantic (FAO fishing area 34) is among the richest areas of the planet in terms of diversity, and its waters are being exploited for decades by native and foreign fleets. In this study fisheries data from industrial bottom trawlers operating in FAO fishing area 34 are being analyzed, through a step by step approach. Beginning from the analysis of the catch composition and its trophic levels, we gradually focus in three commercially important species (Octopus vulgaris, Mullus surmuletus, Penaeus notialis) and their size trends during 2004-2012. Significant trend shifts were spotted, in the CPUE values of O. vulgaris and P. notialis, while M. surmuletus did not present any important alterations. Furthermore, the study concludes by attributing, in a theoretical context, the findings and comparing the analyzed data with official aggregated data in order to showcase the importance of utilizing data of pure industrial origin.
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language English
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spelling oai:hellanicus.lib.aegean.gr:11610-202142025-03-10T08:01:52Z Catch composition and trends in the size of three commercial species from bottom trawlers operating in FAO fishing area 34 (NW Africa) during 2004-2012 Αναστασάκη-Λαμψακινού, Μαρία-Ιώ Μπατζάκας, Ιωάννης Τρυγόνης, Βασίλειος Ολοκληρωμένη Διαχείριση Παράκτιων Περιοχών ανάλυση αλιευτικών δεδομένων τράτες βυθού fisheries data analysis bottom trawlers FAO 34 GAM Marine sciences Fisheries Dredging (Fisheries) In need of managing fisheries resources, a plethora of studies are globally conducted, using various indicators to determine the state of marine stocks. Eastern Central Atlantic (FAO fishing area 34) is among the richest areas of the planet in terms of diversity, and its waters are being exploited for decades by native and foreign fleets. In this study fisheries data from industrial bottom trawlers operating in FAO fishing area 34 are being analyzed, through a step by step approach. Beginning from the analysis of the catch composition and its trophic levels, we gradually focus in three commercially important species (Octopus vulgaris, Mullus surmuletus, Penaeus notialis) and their size trends during 2004-2012. Significant trend shifts were spotted, in the CPUE values of O. vulgaris and P. notialis, while M. surmuletus did not present any important alterations. Furthermore, the study concludes by attributing, in a theoretical context, the findings and comparing the analyzed data with official aggregated data in order to showcase the importance of utilizing data of pure industrial origin. 2020-03-31T13:43:49Z 2020-03-31T13:43:49Z 2018-10-19 http://hdl.handle.net/11610/20214 en Default License 80 σ. application/pdf Μυτιλήνη
spellingShingle ανάλυση αλιευτικών δεδομένων
τράτες βυθού
fisheries data analysis
bottom trawlers
FAO 34
GAM
Marine sciences
Fisheries
Dredging (Fisheries)
Αναστασάκη-Λαμψακινού, Μαρία-Ιώ
Catch composition and trends in the size of three commercial species from bottom trawlers operating in FAO fishing area 34 (NW Africa) during 2004-2012
title Catch composition and trends in the size of three commercial species from bottom trawlers operating in FAO fishing area 34 (NW Africa) during 2004-2012
title_full Catch composition and trends in the size of three commercial species from bottom trawlers operating in FAO fishing area 34 (NW Africa) during 2004-2012
title_fullStr Catch composition and trends in the size of three commercial species from bottom trawlers operating in FAO fishing area 34 (NW Africa) during 2004-2012
title_full_unstemmed Catch composition and trends in the size of three commercial species from bottom trawlers operating in FAO fishing area 34 (NW Africa) during 2004-2012
title_short Catch composition and trends in the size of three commercial species from bottom trawlers operating in FAO fishing area 34 (NW Africa) during 2004-2012
title_sort catch composition and trends in the size of three commercial species from bottom trawlers operating in fao fishing area 34 nw africa during 2004 2012
topic ανάλυση αλιευτικών δεδομένων
τράτες βυθού
fisheries data analysis
bottom trawlers
FAO 34
GAM
Marine sciences
Fisheries
Dredging (Fisheries)
url http://hdl.handle.net/11610/20214
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