Review of the state of marine protected areas in South Africa

Attwood, Colin G.; Mann, BQ; Beaumont, J.; Harris, Jean M.

doi:10.2989/025776197784160910

Cited by 56 publications

(42 citation statements)

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“…The role of marine protected areas (MPAs) in the future conservation of South African abalone remains just as important (Attwood et al 1997;Palumbi 2003) and the existing MPAs intended to conserve ecosystems should include an evaluation for their use as conservation sites for H. midae. It is expected that MPAs that take an ecosystem approach by protecting key species such as kelp and sea urchins will indirectly benefit abalone.…”

Section: Conservation and Management Implicationsmentioning

confidence: 99%

Historical isolation and hydrodynamically constrained gene flow in declining populations of the South-African abalone, Haliotis midae

et al. 2010

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Over the past two decades, the South African abalone (Haliotis midae), has been under serious threat mainly due to overexploitation. To assure successful management and conservation of wild stocks, the consideration of species-specific evolutionary and population dynamic aspects is critical. In this study, eight microsatellites and 12 single nucleotide polymorphic loci (SNPs) were applied to determine genetic structure in nine populations sampled throughout the species' natural distribution range. It spans along three biogeographical regions of the South African coastline: temperate in the West coast, warm temperate in the South coast and subtropical in the East coast. Data analysis applying frequentist and Bayesian-based clustering methods indicated weak genetic differentiation between populations of the West, South and East coast. Spatial Bayesian inference further revealed clinal variation along a longitudinal gradient and a transitional zone in the South coast. Coalescent analysis of long-term migration showed restricted interchange among the sampling locations of the South coast while estimates of effective population size were comparable between coastal regions. Furthermore demographic analysis of microsatellite data suggested population expansion, probably reflecting range expansion that occurred following glacial retreat during the Pleistocene. Overall, population structure analysis suggested contemporary (hydrographical conditions) as well as historical (Pleistocene contraction of habitat) restrictions to gene flow. This study provides the foundation for the establishment of an integrated management policy for preserving the natural diversity and adaptive potential of H. midae.

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Section: Conservation and Management Implicationsmentioning

confidence: 99%

Historical isolation and hydrodynamically constrained gene flow in declining populations of the South-African abalone, Haliotis midae

et al. 2010

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“…Cunha and Weber (2001) found it difficult to find individuals larger than 22.5 mm in capitulum length in overexploited areas. Once again, this demonstrates the success of the marine reserve in accomplishing the reasons outlined by Attwood et al (1997) and Botsford et al (2003), for their establishment.…”

Section: Discussionmentioning

confidence: 93%

“…Hence, the role of marine protected areas in fisheries management is in relation to the importance of conserving ecosystem structure, as the framework for stable fishery production; likewise, in utilising the value of undisturbed ecosystems, for comparative studies, among others (Attwood et al, 1997).…”

Section: Discussionmentioning

confidence: 99%

“…Some of the reasons for establishing marine reserves include, amongst others: (i) protecting breeding stocks of certain commercially-important species; (ii) rehabilitating depleted stocks; (iii) protecting habitats representative of different coastal ecosystems; and (iv) conserving areas of outstanding richness and diversity (Attwood et al, 1997;Botsford et al, 2003). Hence, the role of marine protected areas in fisheries management is in relation to the importance of conserving ecosystem structure, as the framework for stable fishery production; likewise, in utilising the value of undisturbed ecosystems, for comparative studies, among others (Attwood et al, 1997).…”

Section: Discussionmentioning

confidence: 99%

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Protection of the goose barnacle Pollicipes pollicipes, Gmelin, 1790 population: the Gaztelugatxe Marine Reserve (Basque Country, northern Spain)

Borja¹,

Muxika²,

Bald³

2006

Sci. Mar.

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“…As a result, reproduction potential would increase within and perhaps outside the reserve. The presence of even limited exploitation within the protected area diminishes expected benefits (Jennings, 1996;Attwood et al, 1997;Wantiez, 1997). Also, benefits decrease rapidly after exploitation resumes in previously unfished reserves (Alcala and Russ, 1990).…”

Section: Mpas As a Management Tool Ecological Factorsmentioning

confidence: 99%

Addressing ecosystem effects of fishing using marine protected areas

Sumaila

Guénette

Alder

et al. 2000

ICES Journal of Marine Science

126

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This article is a synthesis of the current literature on the potential of marine protected areas (MPAs) a useful management tool for limiting the ecosystem effects of fishing, including biological and socio-economic aspects. There is sufficient evidence that fishing may negatively affect ecosystems. Modelling and case studies show that the establishment of MPAs, especially for overexploited populations, can mitigate ecosystem effects of fishing. Although quantitative ecosystem modelling techniques incorporating MPAs are in their infancy, their role in exploring scenarios is considered crucial. Success in implementing MPAs will depend on how well the biological concerns and the socio-economic needs of the fishing community can be reconciled.Cet article fait la synthèse de la littérature sur la possibilité d'utiliser les zones marines protégées (MPAs) comme outils de gestion afin de limiter les effets de la pêche sur les écosystèmes, en incluant les aspects biologiques et socio-économiques. La littérature fournit suffisamment d'évidences à l'effet que la pêche peut avoir un effet négatif. Les MPAs établies dans divers habitats à travers le monde ainsi que les modélisations montrent que MPAs offrent une certaine protection contre ces effets négatifs. Les techniques quantitatives de modélisation des écosystèmes, bien que cruciales pour l'exploration de scénarios de gestion, n'en sont encore qu'à leurs débuts et mériteraient encore plus d'attention. Finalement, le succès des MPAs dépendra de la manière dont on réussira à allier les aspects biologiques et les intérêts socio-économiques. 2000 International Council for the Exploration of the Sea

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Review of the state of marine protected areas in South Africa

Cited by 56 publications

References 0 publications

Historical isolation and hydrodynamically constrained gene flow in declining populations of the South-African abalone, Haliotis midae

Historical isolation and hydrodynamically constrained gene flow in declining populations of the South-African abalone, Haliotis midae

Protection of the goose barnacle Pollicipes pollicipes, Gmelin, 1790 population: the Gaztelugatxe Marine Reserve (Basque Country, northern Spain)

Addressing ecosystem effects of fishing using marine protected areas

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