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dc.contributor.authorLebata, Ma. Junemie Hazel
dc.contributor.authorWalton, Mark E.
dc.contributor.authorBiñas, Joseph B.
dc.contributor.authorPrimavera, Jurgenne H.
dc.contributor.authorLe Vay, Lewis
dc.date.accessioned2015-05-18T06:24:07Z
dc.date.available2015-05-18T06:24:07Z
dc.date.issued2012
dc.identifier.citationLebata, M. J. H., Walton, M. E., Biñas, J. B., Primavera, J. H., & Le Vay, L. (2012). Identifying mangrove areas for fisheries enhancement; population assessment in a patchy habitat. Aquatic Conservation: Marine and Freshwater Ecosystems, 22(5), 652-664.en
dc.identifier.issn1052-7613
dc.identifier.urihttp://hdl.handle.net/10862/2227
dc.description.abstract
  1. Small-scale fisheries are an important element of the ecosystem goods and services that mangrove habitats provide, especially to poorer coastal communities that rely most on natural resources, and have similar values to payments for ecosystem services (PES) under carbon-trading schemes.
  2. In advance of fishery-enhancement trials for the mud crab Scylla olivacea, a mark–recapture study was conducted to estimate population size and turnover in 50 ha of isolated mangrove on Panay Island, Philippines. A total of 811 crabs were released in six sessions with an overall recapture rate of 41.5 ± 3.6%. Population size ranged from 607–1637 individuals.
  3. There was a high degree of site-fidelity, with 45.5% of recaptures in the same sampling areas as releases. Total mortality was 0.79 month-1, with fishing mortality accounting for 95% of overall mortality.
  4. Von Bertalanffy and Gompertz growth models yielded estimates for L (carapace width) of 117.3 ± 14.7 and 110.6 ± 2.1 mm and for k of 2.16 ± 0.74 and 3.25 ± 0.81, respectively. Crab densities of 12–33 individuals ha-1 in the study area were lower than in other mangrove systems owing to intermittent recruitment, while growth rates indicated no limitation in terms of food supply.
  5. The study demonstrates that in specific mangrove habitats that are below carrying capacity, there is potential for fisheries enhancement to sustain or increase direct economic benefits from mangrove ecosystems and hence promote community engagement in broader conservation and PES initiatives.
en
dc.description.sponsorshipThis research was supported by the European Commission, INCO DC grant (contract ECA4-CT-2001-10022).en
dc.language.isoenen
dc.publisherWileyen
dc.subjectDecapoda
dc.subjectScylla olivacea
dc.subjectPhilippines
dc.subjectPhilippines, Panay I.
dc.titleIdentifying mangrove areas for fisheries enhancement; population assessment in a patchy habitaten
dc.typeArticleen
dc.citation.volume22
dc.citation.issue5
dc.citation.spage652
dc.citation.epage664
dc.citation.journalTitleAquatic Conservation: Marine and Freshwater Ecosystemsen
dc.subject.asfaCarrying capacityen
dc.subject.asfaConservationen
dc.subject.asfaEconomicsen
dc.subject.asfaFisheriesen
dc.subject.asfaFooden
dc.subject.asfaGrowth rateen
dc.subject.asfaHabitaten
dc.subject.asfaIslandsen
dc.subject.asfaMangrove swampsen
dc.subject.asfaMangrovesen
dc.subject.asfaModelsen
dc.subject.asfaMortalityen
dc.subject.asfaMortality causesen
dc.subject.asfaNatural resourcesen
dc.subject.asfaNature conservationen
dc.subject.asfaRecruitmenten
dc.subject.asfaSamplingen
dc.subject.asfaTotal mortalityen
dc.identifier.essn1099-0755
dc.identifier.doi10.1002/aqc.2235


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    These papers were contributed by AQD staff to various national and international journals

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