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Title: Spatial and environmental determinants of the distribution of Striped Marlin (Kajikia audax) in the western and central North Pacific Ocean
Authors: Yung-Hsiang Lien;Nan-Jay Su;Chi-Lu Sun;André E. Punt;Su-Zan Yeh;Gerard DiNardo
Contributors: 國立臺灣海洋大學:環境生物與漁業科學學系
Keywords: Spatial distribution;Oceanographic variables;Environmental preference;Generalized Additive Model
Date: 2014-03
Issue Date: 2017-01-10T01:40:07Z
Publisher: Environmental Biology of Fishes
Abstract: Abstract:Striped Marlin is a highly migratory species distributed throughout tropical and temperate waters in the North Pacific Ocean. The habitat characteristics of Striped Marlin in the western and central North Pacific Ocean were examined using generalized additive models by modelling fishery catch-rates as a function of remotely-sensed environmental covariates, including sea surface temperature (SST), chlorophyll-a concentration (CHL), mixed layer depth (MLD) and sea height anomalies (SHA). SST explained the largest proportion of the deviance, and is therefore considered the best predictor for the habitat of Striped Marlin. Spatial distributions of the relative density of Striped Marlin indicated that there is a seasonal north–south migration, and that the highest densities occur in the central North Pacific Ocean. The preferred habitat characteristics of Striped Marlin in high density areas were identified as SST between 23 and 26 °C, MLD within 30 m depth, and CHL around 0.08 mg m−3, while no preferred range was found for SHA. The results of this study could improve our understanding of Striped Marlin spatial distributions and habitat characteristics.
Relation: 97(3), pp.267-276
Appears in Collections:[Department of Environmental Biology and Fisheries Science] Periodical Articles

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