Collapse of linefish stocks between Cape Hangklip and Walker Bay, South Africa

Citation
Cg. Attwood et M. Farquhar, Collapse of linefish stocks between Cape Hangklip and Walker Bay, South Africa, S AFR J MAR, 21, 1999, pp. 415-432
Citations number
52
Categorie Soggetti
Aquatic Sciences
Journal title
SOUTH AFRICAN JOURNAL OF MARINE SCIENCE-SUID-AFRIKAANSE TYDSKRIF VIR SEEWETENSKAP
ISSN journal
02577615 → ACNP
Volume
21
Year of publication
1999
Pages
415 - 432
Database
ISI
SICI code
0257-7615(1999)21:<415:COLSBC>2.0.ZU;2-W
Abstract
The state of the linefishery between Cape Hangklip and Walker Bay on the Ca pe south coast, South Africa, is assessed. The coast was subdivided into 20 "beats" to provide high spatial resolution on catch and effort of the shor e-based recreational fishery. An observer recorded the number of anglers in each fishery sector, and their catch, during shore patrols over a two-year period. Catch-and-effort data for the commercial boat-based fishery were o btained from an historical database at the turn of last century and from th e extant National Marine Linefish System database. Catch per unit effort (c pue) of shore-anglers was low and many of the species caught earlier in the century have disappeared from catches. Compared to the early records, cont emporary commercial linefish cpue bad dropped by approximately 80%, despite a greater fishing capacity. It is argued that most targeted stocks have be en overexploited (notwithstanding indications of environmental change) and many are severely depleted, poor management of the fishery, including a lac k of control of commercial effort and inadequate enforcement contributed to overexploitation.