Conservation and community benefits from traditional coral reef management at Ahus Island, Papua New Guinea

Cinner, Joshua E., Marnane, Michael J., and McClanahan, Timothy R. (2005) Conservation and community benefits from traditional coral reef management at Ahus Island, Papua New Guinea. Conservation Biology, 19 (6). pp. 1714-1723.

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Abstract

We investigated traditional coral reef management practices at Ahus Island, Manus Province, Papua New Guinea, to evaluate their social role in the community and potential to conserve reef ecosystems. For generations, Ahus Islanders have prohibited spear and net fishing within six delineated areas of their reef lagoon. One to three times per year, fish are briefly harvested from the restricted areas to provide food for ceremonial occasions. Underwater visual censuses of fishes revealed a significantly greater biomass and average size of target species within the restricted areas (205 kg/ha ± 20 [SE]; 102 mm TL [total length]± 0.7) compared with areas without fishing restrictions (127 kg/ha ± 13 SE; 85 mm TL ± 0.7). We estimated the biomass of fish removed during one of the harvest events was 5 to 10% of the available biomass within the restricted area, and in underwater visual surveys conducted before and after a harvesting event we detected no effect of harvesting on fish stocks. Compliance with the fishing restriction is attributed to its perceived legitimacy, its ability to provide the community with direct and indirect benefits, and its reflection of local socioeconomic circumstances. Limited-take closure systems that can serve the needs of a community may provide a viable conservation alternative in situations where compliance with fully closed protected-area regulations is low and resources for proper enforcement are untenable.

Item ID: 1451
Item Type: Article (Refereed Research - C1)
Keywords: customary marine tenure; fish stocks; marine protected areas; periodic harvesting
ISSN: 1523-1739
Date Deposited: 01 Jun 2007
FoR Codes: 07 AGRICULTURAL AND VETERINARY SCIENCES > 0704 Fisheries Sciences > 070403 Fisheries Management @ 30%
05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050210 Pacific Peoples Environmental Knowledge @ 30%
05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050205 Environmental Management @ 40%
SEO Codes: 96 ENVIRONMENT > 9605 Ecosystem Assessment and Management > 960508 Ecosystem Assessment and Management of Mining Environments @ 100%
Citation Count from Web of Science Web of Science 62
Downloads: Total: 6
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