Detection of Potential Fishing Zones of Bigeye Tuna (Thunnus Obesus) at Profundity of 155 m in the Eastern Indian Ocean
| Main Authors: | Fachruddin-Syah, Achmad, Gaol, Jonson Lumban, Zainuddin, Mukti, Apriliya, Nadela Rista, Berlianty, Dessy, Mahabror, Dendy |
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| Other Authors: | Directorate General of Research Strength and Development of Ministry of Research, Technology and Higher Education, Republic of Indonesia |
| Format: | Article info Maximum Entropy Model application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Faculty of Geography, Universitas Gadjah Mada
, 2020
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| Subjects: | |
| Online Access: |
https://journal.ugm.ac.id/ijg/article/view/43708 https://journal.ugm.ac.id/ijg/article/view/43708/pdf https://journal.ugm.ac.id/ijg/article/downloadSuppFile/43708/7226 https://journal.ugm.ac.id/ijg/article/downloadSuppFile/43708/7227 |
Daftar Isi:
- Remotely sensed data and habitat model approach were employed to evaluate the present of oceanographic aspect in the Bigeye tuna's potential fishing zone (PFZ) at a profundity of 155 m. Vessel monitoring system was employed to acquire the angling vessels for Bigeye tuna from January through December, 2015-2016. Daily data of sub-surface temperature (Sub_ST), sub-surface chlorophyll-a (Sub_SC), and sub-surface salinity (Sub_SS) were downloaded from INDESO Project website. Vessel monitoring system and environmental data were employed for maximum entropy (maxent) model development. The model predictive achievement was then estimated applying the area under the curve (AUC) value. Maxent model results (AUC>0.745) exhibited its probable to understand the Bigeye tuna's spatial dispersion on the specific sub-surface. In addition, the results also showed Sub_ST (43,1%) was the most affective aspect in the Bigeye tuna dispersion, pursued by Sub_SC (35,2%) and Sub_SS (21,6%).