GIS-based spatio-temporal analysis on Yellow Fin Tuna catch in Eastern Indian Ocean off Sumatera

Spatio-temporal analysis of yellow fin tuna fishing activity could give us new perception and perspective on studying this fisheries resource exploration. This study was carried out in Eastern Indian Ocean off Sumatera. Fishing data were collected between 2014 until 2018 from the hand line fishermen...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2020-01, Vol.429 (1), p.12041
Main Authors: Nurholis, Gaol, J L, Syah, A F, Dewi, A K
Format: Article
Language:English
Subjects:
Decision analysis
Distribution patterns
Fisheries
Fishery resources
Fishing
Geographical distribution
Habitat preferences
Resource exploration
Spatial analysis
Spatial distribution
Statistical analysis
Temporal distribution
Thunnus albacares
Tuna
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Summary:Spatio-temporal analysis of yellow fin tuna fishing activity could give us new perception and perspective on studying this fisheries resource exploration. This study was carried out in Eastern Indian Ocean off Sumatera. Fishing data were collected between 2014 until 2018 from the hand line fishermen's daily logbooks accessed from Bungus fishing port. Data were organized into a database and structured on a geographical reference to allow GIS-Based analysis. We performed raster calculator analysis and spatial statistical analysis to understand spatiotemporal distribution behaviour and fishing activity also employed the generalized additive model to understand the habitat preferences. The result of GIS-based analysis shows the dynamics of catch, effort and catch per unit effort distribution patterns, underlining the annual differences of geographical distribution and fishing pattern. The most concentrated fishing activity monitored in 2014 while the more dispersed fishing activity monitored in 2017. The geographic orientation of spatial distribution monitored at range between 72.90 degrees until 176.15 degrees. GIS provide an important and powerful tool to analyse fishing information to help decision makers in the EIO off Sumatera on Tuna management.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/429/1/012041