An economic valuation of the South African linefishery

McGrath, Michael; Horner, C. C. M.; Brouwer, S. L.; Lamberth, Stephen J.; Mann, BQ; Sauer, W. H. H.; Erasmus, Charles J.

doi:10.2989/025776197784161171

Cited by 51 publications

(37 citation statements)

References 7 publications

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“…Van der Elst (1993) estimated that there were 365 000 participants in South Africa's open access recreational shore-fishery (the main user group catching U. robinsoni in False Bay) in 1991 and that this number would increase at approximately 6% per year. McGrath et al (1997) used a lower rate of increase (2%) due to a finding of a very low income elasticity of demand and a predominance of white participants. False Bay's proximity to the greater Cape Town metropolis, which has shown considerable population growth over the same period (1990-2000Statistics South Africa 2001), suggests that the growth in recreational shore-anglers fishing the area increased at a similar rate.…”

Section: Temporal Variationmentioning

confidence: 97%

Assessment of South AfricanUmbrina robinsonibased on per-recruit models

Hutchings

Griffiths

2010

African Journal of Marine Science

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Slender baardmanUmbrina robinsoni are an important component of recreational shore-angler and spearfisher catches along the eastern seaboard of South Africa. Stocks of U. robinsoni at three sites -False Bay, Stil Bay and the KwaZulu-Natal (KZN) coast -were modelled using a per-recruit approach. Total (Z) and fishing (F) mortality rates were estimated by catch-curve analyses using measures of individual size (length or weight) recorded by researchers, divers (log books) or during spearfishing competitions. Based on estimates of F during the period 2001-2003, spawner biomass per-recruit ratios were estimated to be either at or below the 25% threshold (False Bay SB/R = 21% SB/R F=0 , Stil Bay SB/R = 25% SB/R F=0 , and KZN SB/R = 21% SB/R F=0 ), suggesting that rates of F were too high. Reductions in F necessary to achieve target fishing mortality levels (F SB40 ) at the current minimum size limit (l c 40 cm total length) were 51% for Stil Bay and the KZN coast and 57% for False Bay. Based on the bag frequencies from 927 diver outings in KZN (1989KZN ( -2003, a reduction in bag limit from the current five to two fish is predicted to reduce F in this region by approximately 25%. Increasing the l c to 50 cm is predicted to increase SB/R ratios to 36% SB/R F=0 in False Bay, 43% SB/R F=0 in KZN and 52% SB/R F=0 in Stil Bay, at current levels of F. Owing to the philopatric nature of U. robinsoni and the consequent existence of temporary refugia, catch curves are likely to underestimate fishing mortality. The reductions in F estimated to attain the target reference points are therefore probably conservative.

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Section: Temporal Variationmentioning

confidence: 97%

Assessment of South AfricanUmbrina robinsonibased on per-recruit models

Hutchings

Griffiths

2010

African Journal of Marine Science

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“…Smale and Buxton (1985: 142) felt that an estimate of the recreational value of the linefisheries in Algoa Bay was urgently needed (so that the importance of the industry could be properly documented). McGrath and Horner (1996) provide us with some insight into the matter. Addressing a National Productivity Institute conference in Port Elizabeth they estimated that linefisheries in South Africa's coastal provinces generated about R2 167 million in income (about 1,3% of the GGP of these provinces) and about 131 560 jobs.…”

Section: Recreational Line Fishing and Other Activitiesmentioning

confidence: 99%

Heavy Industry Compared to Agro-Aquaculture Options in the Coega River Mouth Area / 'N Vergelyking Tussen Swaar Nywerhede en Landbou En—water-Kultuurprojekte in Die Koega-Rivierstroomgebied

Hosking¹

1999

Agrekon

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“…There is traditionally a focus on fisheries and the provision of seafood as a beneficial ecosystem service [18,19], particularly the spillover of target species into adjacent fisheries [20][21][22][23]. However, there is also a growing body of research that focusses on the non-fisheries benefits of MPAs namely the beneficial ecosystem service of "recreation, leisure and tourism", assessing its economic value by using a combination of direct market valuations [24][25][26][27]; travel cost methods [28][29][30][31]; contingent valuation methods [32][33][34][35][36][37][38][39][40]; and choice modelling experiments [41][42][43]. In these contexts, valuing the beneficial ecosystem service of recreation and leisure in relation to MPAs is primarily used to take a single snapshot of the value and use of that activity in a particular MPA site.…”

Section: Introductionmentioning

confidence: 99%

The socio-economic effects of a Marine Protected Area on the ecosystem service of leisure and recreation

et al. 2015

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a b s t r a c tMarine Protected Areas (MPAs) are an important tool for the maintenance of marine ecosystem functionality and health and ensuring the onward flow of beneficial ecosystem services that support human well-being. Social and economic factors influence whether and how stakeholders exploit resources or cooperate to conserve them. Environmental managers are now turning from designating MPAs to monitoring their effectiveness. Combining spatial analysis with quantitative and qualitative survey methods this research shows that an MPA (Lyme Bay, SW England) has had varying effects on the delivery of the beneficial ecosystem service of leisure and recreation. In the survey years 2008-2011 dive businesses have increased their frequency of activity inside and outside the MPA and report an increase in turnover; though they perceive little or no effect of the MPA on business. Charter boat operators have seen an overall decline in the frequency of activity outside the MPA and an increase inside the MPA. They perceive that the MPA has increasingly had a positive effect on their business. Sea angling activity has declined at sites outside the MPA and increased at sites within the MPA, suggesting a redistribution of spatial activity. Diving activity has increased both inside and outside the MPA. Divers report that the MPA has influenced where they choose to dive. This corresponds to a potential increase in value of the MPA resource (represented as the proportional expenditure and associated turnover by these groups) of d2.2 million. This research demonstrates that the use of the resource has changed following designation and that MPAs can attract a greater proportion of the leisure and recreation expenditure and associated turnover to sites within the MPA boundary. Moving forward it is important to assess effects both inside and outside MPAs. Integrating high quality social science at MPA sites to track effectiveness can help to adapt and refine management strategies to reflect the needs of the stakeholders and support effective conservation.

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An economic valuation of the South African linefishery

Cited by 51 publications

References 7 publications

Assessment of South AfricanUmbrina robinsonibased on per-recruit models

Assessment of South AfricanUmbrina robinsonibased on per-recruit models

Heavy Industry Compared to Agro-Aquaculture Options in the Coega River Mouth Area / 'N Vergelyking Tussen Swaar Nywerhede en Landbou En—water-Kultuurprojekte in Die Koega-Rivierstroomgebied

The socio-economic effects of a Marine Protected Area on the ecosystem service of leisure and recreation

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