Titre :
|
Spatial analysis of fish distribution and abundance patterns: a GIS approach
|
Auteurs :
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A. Booth ;
Int. symp. on fishery stock assessment models for the 21st century, Anchorage, 8-11 oct. 1997 (1997; USA)
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Type de document :
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article/chapitre/communication
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Année de publication :
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1998
|
Format :
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p. 719-740
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Langues:
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= Anglais
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Catégories :
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ECOLOGIE ETUDE DES PEUPLEMENTS
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Mots-clés:
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POISSON
;
EVALUATION DES STOCKS
;
SYSTEME D'INFORMATION GEOGRAPHIQUE
;
DISTRIBUTION
;
STRUCTURE DE POPULATION
|
Résumé :
|
A heterogeneous Geographical Information System (GIS) was developed to analyze fish distribution and abundance patterns on the Agulhas Bank, South Africa. The sparid fish, Pterogymnus laniarius, was chosen as a candidate species for analysis because of its commercial importance and high biomass. The results using Generalized Additive Modeling within the GIS revealed that there was a nursery area for immature fish on the central Agulhas Bank. After sexual maturation, approximatively 40% of the biomass migrated eastward, colonizing large areas of the eastern Agulhas bank. The use of GIS methodologies in integrated fishery management is discussed as it appears to be a developing trend in analyzing fish distribution and abundance data.
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Source :
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American Fisheries Society, vol report AK-SG-98-01, n°15
|