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dc.contributor.authorHamilton, Richard J
dc.contributor.authorHughes, Alec
dc.contributor.authorBrown, Christopher J
dc.contributor.authorLeve, Tingo
dc.contributor.authorKama, Warren
dc.date.accessioned2019-10-07T22:35:00Z
dc.date.available2019-10-07T22:35:00Z
dc.date.issued2019
dc.identifier.issn0722-4028
dc.identifier.doi10.1007/s00338-019-01801-z
dc.identifier.urihttp://hdl.handle.net/10072/387928
dc.description.abstractCommunity-based fisheries management that integrates local knowledge and existing user rights is often seen as a solution to the failures of top-down fisheries management in the Pacific. In Roviana Lagoon, Western Solomon Islands, a network of community-based marine protected areas (MPAs) was established in the early 2000s to conserve declining populations of bumphead parrotfish (Bolbometopon muricatum) and other locally valuable fish species such as humphead wrasse (Cheilinus undulatus). We aimed to evaluate the success of these protected areas at preventing declines of B. muricatum and C. undulatus. We conducted 27 underwater visual census (UVC) surveys at permanent passage and outer reef monitoring sites in Roviana Lagoon in 2018 and compared our findings with results from 72 UVC surveys that we had conducted at the same sites 18 yrs earlier. We also interviewed Roviana spearfishers about their maximum nightly B. muricatum catches from 2018, the early 2000s and the 1980s. Abundances of all B. muricatum and C. undulatus sighted on UVC surveys declined by 62% and 57%, respectively, between 2000 and 2018, and abundances of adult B. muricatum and C. undulatus declined by 78% and 72%, respectively, over the same period. Using a joint model of B. muricatum abundance and its reported maximum catch, we estimated that in 2018 the population of B. muricatum was 8% of its 1980’s abundance. By modelling projected rates of decline over three generations, we show that populations of B. muricatum and C. undulatus in Roviana Lagoon meet the IUCN Red List thresholds for Critically Endangered (CR). The probable causes of these declines are sustained fishing pressure, poor enforcement of community-based management measures and loss of fish nursery habitats due to logging. Our findings suggest urgent co-management of the ridge-to-reef system is needed to prevent further fish population declines in Roviana Lagoon.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofpagefrom455
dc.relation.ispartofpageto465
dc.relation.ispartofissue3
dc.relation.ispartofjournalCoral Reefs
dc.relation.ispartofvolume38
dc.subject.fieldofresearchEarth Sciences
dc.subject.fieldofresearchEnvironmental Sciences
dc.subject.fieldofresearchBiological Sciences
dc.subject.fieldofresearchcode04
dc.subject.fieldofresearchcode05
dc.subject.fieldofresearchcode06
dc.subject.keywordsScience & Technology
dc.subject.keywordsLife Sciences & Biomedicine
dc.subject.keywordsMarine & Freshwater Biology
dc.subject.keywordsBolbometopon muricatum
dc.subject.keywordsCheilinus undulatus
dc.titleCommunity-based management fails to halt declines of bumphead parrotfish and humphead wrasse in Roviana Lagoon, Solomon Islands
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationHamilton, RJ; Hughes, A; Brown, CJ; Leve, T; Kama, W, Community-based management fails to halt declines of bumphead parrotfish and humphead wrasse in Roviana Lagoon, Solomon Islands, Coral Reefs, 2019, 38 (3), pp. 455-465
dc.date.updated2019-09-30T03:59:35Z
dc.description.versionAccepted Manuscript (AM)
gro.rights.copyright© 2019 Springer Berlin/Heidelberg. This is an electronic version of an article published in Coral Reefs Volume 38, Issue 3, pp 455–465. Coral Reefs is available online at: http://link.springer.com/ with the open URL of your article.
gro.hasfulltextFull Text
gro.griffith.authorBrown, Chris J.


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