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  • WG-FSA-07/50 - Description of the most important species of finfish and cephalopods in diet of Antarctic toothfish (Dissostichus mawsoni Norman, 1937) (Perciformes, Nototheniidae), in the Amundsen Sea in 2006–2007Supprimer

Shifts in the demersal fish community of South Georgia

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Numéro du document:
SC-CAMLR-VII/BG/24
Auteur(s):
United States of America
Accessibility Categories
Open Access (OA)
Review Finalised:
Non
Point(s) de l'ordre du jour
Résumé

The heavily exploited fish stocks of South Georgia have been declining since the early 1970's. Use of a non-parametric method revealed a significant change in this community from the 1986/87 survey to the 1987/88 survey. This change was the result of reductions in the abundance of Champsocephalus gunnari and Notothenia squamifrons, and the increased presence of Pseudochaenichthys georgianus. Fishing mortality was the most likely mechanism affecting these changes in C. gunnari and N. squamifrons, but reasons for the increase of Ps. georgianus are unclear. More surveys are needed to provide the data necessary to understand the dynamics of this system.