An assessment of the South African east coast linefishery from Kei Mouth to Stil Bay

Brouwer, Stephen Leonard (1998) An assessment of the South African east coast linefishery from Kei Mouth to Stil Bay. Masters thesis, Rhodes University.

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Abstract

During the period April 1994 and February 1996 as part of an investigation into the national linefishery, the east coast shore fishery and the recreational and conunercial ski-boat fisheries were surveyed, at eight sites between Kei Mouth in the East and stU Bay in the West. Roving creel, access point and aerial surveys were used. A questionnaire was developed for each sector to gather data on catch and effort, fisher demographics, economics, fisher attitudes towards, and knowledge of, the current management regulations and assess the efficacy of the fisheries inspectorate. During the access point survey the catch of 3273 fishers was inspected and 1556 interviews were conducted. Questionnaires were conducted on 118 recreational ski-boaters and the catch of 165 boats was inspected. 96 connnercial skippers were interviewed and 230 had their catch inspected. Three aerial surveys of the entire area were conducted during which a total of 1067 shore fishers were counted giving a shore fisher density of 0.39 fishers.km⁻¹. The majority (99%) of participants in all sectors of the linefishery were male. The greatest number of participants were white, shore fishery 77% recreational ski-boat 98% commercial skiboat 89%, followed by coloured, asian and black people. To a large extent this reflects the income of various racial groups. Most fishers supported the current linefish management plan. However, when tested on their knowledge of the size limits, bag limits and closed seasons of their target species many shore fishers (59%) did not know them and a high proportion of fishers in all sectors had disobeyed at least one of the regulations (shore 50%, recreational ski-boat 70%, commercial ski-boat 56%). When compared to historical data the present catch per unit effort (CPUE) in all sectors has decreased. Most interviewees in the various sectors did not accept responsibility for the decline in CPUE, but attributed it to three principal reasons vis their perceived direct competitors, trawling and pollution. Analysis of the catch revealed that all sectors were multispecies fisheries, with each sector being characterised by a small number of target species. Catch composition differed significantly between the shore and ski-boat sectors, but there was significant overlap between the two skiboat sectors. Analysis of the catch in comparison to that reported to the National Marine Linefish System (NMLS) revealed that there was a substantial degree of under-reporting. There was little seasonal difference in effort in the shore fishery while the recreational ski-boat effort was highest in the summer and the commercial ski-boat effort was high in the winter. Effort in the shore and recreational ski-boat fisheries was concentrated over weekends while the commercial ski-boat effort was highest during weekdays. Total effort for the entire area was estimated at 903 186 (±1913) fisher days per annum in the shore fishery, 24 357 (±685) recreational ski-boat fisher days and 64 266 (±1686) commercial ski-boat fisher days per. Expenditure and capital investment in the various sectors was calculated, as were earnings of the participants in the commercial ski-boat sector. The linefishery in the Eastern Cape was estimated to have a minimum capital investment in excess of R210 million and more than R32 million is spent annually on running costs. The commercial ski-boat fishery directly employed an estimated 3184 people. The economic implications of changes in CPUE for the commercial ski-boat fishery are considered, as are the benefits of a recreational angling licence. Management of the linefishery is discussed in relation to the fmdings of this study.

Item Type:Thesis (Masters)
Uncontrolled Keywords:Line fishing, Fisheries, Boats, Ski-boat, Commercial, Recreational, Survey, Kei Mouth, Eastern Cape, Stil Bay, Western Cape, South Africa, Roving creel, Access point, Aerial surveys, Catch, Effort, Fisher demographics, Attitude, Economics, Regulations, Management, Inspectorate, White, Asian, Coloured, Black, Catch per unit effort, CPUE, National Marine Linefish System, NMLS, Expenditure, Capital investment
Subjects:H Social Sciences > HT Communities. Classes. Races
S Agriculture > SH Aquaculture. Fisheries. Angling
Divisions:Faculty > Faculty of Science > Ichthyology & Fisheries Science
Supervisors:Hecht, Tom and Buxton, Colin
ID Code:3055
Deposited By: Philip Clarke
Deposited On:29 Jun 2012 06:10
Last Modified:29 Jun 2012 06:10
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