Mapping Fish Community Variables by Integrating Field and Satellite Data, Object-Based Image Analysis and Modeling in a Traditional Fijian Fisheries Management Area

dc.contributor.authorKnudby, Anders
dc.contributor.authorRoelfsema, Chris
dc.contributor.authorLyons, Mitchell
dc.contributor.authorPhinn, Stuart
dc.contributor.authorJupiter, Stacy
dc.coverage.countryFijien_US
dc.coverage.regionPacific and Australiaen_US
dc.date.accessioned2011-04-06T19:01:37Z
dc.date.available2011-04-06T19:01:37Z
dc.date.issued2011en_US
dc.description.abstract"The use of marine spatial planning for zoning multi-use areas is growing in both developed and developing countries. Comprehensive maps of marine resources, including those important for local fisheries management and biodiversity conservation, provide a crucial foundation of information for the planning process. Using a combination of field and high spatial resolution satellite data, we use an empirical procedure to create a bathymetric map (RMSE 1.76 m) and object-based image analysis to produce accurate maps of geomorphic and benthic coral reef classes (Kappa values of 0.80 and 0.63; 9 and 33 classes, respectively) covering a large (>260 km2) traditional fisheries management area in Fiji. From these maps, we derive per-pixel information on habitat richness, structural complexity, coral cover and the distance from land, and use these variables as input in models to predict fish species richness, diversity and biomass. We show that random forestmodels outperform five other model types, and that all three fish community variables can be satisfactorily predicted from the high spatial resolution satellite data. We also show geomorphic zone to be the most important predictor on average, with secondary contributions from a range of other variables including benthic class, depth, distance from land, and live coral cover mapped at coarse spatial scales, suggesting that data with lower spatial resolution and lower cost may be sufficient for spatial predictions of the three fish community variables."en_US
dc.identifier.citationjournalRemote Sensingen_US
dc.identifier.citationpages460-483en_US
dc.identifier.citationvolume3en_US
dc.identifier.urihttps://hdl.handle.net/10535/7178
dc.languageEnglishen_US
dc.subjectcoral reefsen_US
dc.subjectbiomassen_US
dc.subjectpredictionen_US
dc.subjectmappingen_US
dc.subjectdiversityen_US
dc.subject.sectorFisheriesen_US
dc.subject.sectorTheoryen_US
dc.titleMapping Fish Community Variables by Integrating Field and Satellite Data, Object-Based Image Analysis and Modeling in a Traditional Fijian Fisheries Management Areaen_US
dc.typeJournal Articleen_US
dc.type.methodologyCase Studyen_US
dc.type.publishedpublisheden_US
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