Changes in the Eastern Cape demersal inshore trawl fishery between 1967 and 1995
| العنوان: | Changes in the Eastern Cape demersal inshore trawl fishery between 1967 and 1995 |
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| المؤلفون: | Booth, AJ, Hecht, T |
| المصدر: | African Journal of Marine Science; Vol 19 (1998) |
| بيانات النشر: | NISC, 2011. |
| سنة النشر: | 2011 |
| الوصف: | Changes in the Eastern Cape demersal inshore trawl fishery operating out of Port Elizabeth over a 28-year period from 1967 to 1995 are described. The fishery is restricted to vessels operating between Slangbaai inthe west to Port Alfred in the east. The principal target species are the shallow-water Cape hake and Cape horse mackerel. Eight of the more than 80 recorded species caught by the trawlers during the entire periodcontributed >98% to the total landed catch. These are hake, horse mackerel, panga, Agulhas sole, kingklip, Cape gurnard, silver kob and chokka squid. There was a notable decline in total catch and catch rate over the period reviewed, together with considerable change in the overall catch composition. For the two time-periods for which there are accurate catch data, hake, horse mackerel and panga consistently contributed in excess of 85% to the total annual landings. There were significant decreases in the size-at-(50%) recruitment for hake, horse mackerel and panga. Although at face value it would appear that the fishery is in decline, the causative factors are largely unknown and cannot be quantified properly owing to the paucity of comparable data. The need for further detailed investigation into the population dynamics of principal species in the Eastern Cape is discussed, particularly as it pertains to spawner biomass on the Agulhas Bank. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1814-232X 1814-2338 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=78975075580c::de9f795ae18129c42abd6d09961662ad https://www.ajol.info/index.php/ajms/article/view/66346 |
| رقم الأكسشن: | edsair.78975075580c..de9f795ae18129c42abd6d09961662ad |
| قاعدة البيانات: | OpenAIRE |
PDF full text from Publisher | تدمد: | 1814232X 18142338 |
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