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Alianto ,
Department Of Fisheries, Faculty Of Fisheries And Marine Science, University Of Papua, Gunung Salju Street, Manokwari Regency, Indonesia
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Journal : Journal of Applied Geospatial Information

 1 
Spatial-Temporal Variability of Chlorophyll-a Concentration in Cenderawasih Bay and Surrounding Waters Alianto Alianto; Baigo Hamuna
Journal of Applied Geospatial Information Vol 4 No 2 (2020): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5.299 KB) | DOI: 10.30871/jagi.v4i2.2003

Abstract

Chlorophyll-a is one of the parameters determining the primary productivity of water. In the fisheries sector, information on chlorophyll-a concentration in marine waters is very important for the prediction of fishing grounds. This study aims to analyze the variability of chlorophyll-a concentrations in Cenderawasih Bay and the surrounding waters, both spatial and temporal variability. Data from the Aqua-MODIS Level 3 monthly composite period from January to December 2019 was used to determine the concentration of chlorophyll-a. Time-series data are used to determine fluctuations of chlorophyll-a concentrations, while interpolation with the kriging method is used to determine the spatial distribution of chlorophyll-a. The analysis showed that the monthly average value of chlorophyll-a concentration in the study area ranged from 0.1988 – 0.3415 mg.m-3. The average value of chlorophyll-a concentration increases from March to June and then decreases in July or August. The highest average chlorophyll-a concentration was in March and the lowest in January. The maximum chlorophyll-a concentration in April and the minimum in August, which is around 9.1089 mg.m-3 and 0.0975 mg.m-3, respectively. The concentration of chlorophyll-a in Cenderawasih Bay and its surrounding waters is dominated by a low concentration, which ranges 0.1482 – 0.3158 mg.m-3. Generally, the variability of chlorophyll-a concentrations in the study area is influenced by seasons. The average chlorophyll-a concentration is high in the Transition I (West-east) and East seasons and will decrease in Transition II (East-West) until the West season. Spatially, chlorophyll-a concentrations in coastal areas are higher than in offshore waters. High chlorophyll-a concentrations are found around the border between Nabire Regency and Waropen Regency. The amount of run-off flow that supplies nutrients from the mainland greatly affects the high concentration of chlorophyll-a in the coastal area.
Co-Authors . Henri Alfret Roni Marani Alfret Roni Marani Anak Agung Istri Sri Wiadnyani Annisa Novita Sari Ario Damar Baigo Hamuna Baigo Hamuna Baigo Hamuna Baigo Hamuna Baigo Hamuna Baigo Hamuna Baigo Hamuna Basa T Rumahorbo Christina Recharda Rusianti Desy Nataliah Emmanuel Manangkalangi Enan M. Adiwilaga Enan M. Adiwilaga Enang Harris Endriano Manalu Endriano Manalu Fadli Zainuddin Fanny Fransina Carolina Simatauw Firdaus, Alif Fitriyah Irmawati Ellyas Saleh Fitriyah Irmawati Elyas Saleh Fredy C. Eldiester Fredy C. Eldiester Frits N. Y. Rumbino Frits N. Y. Rumbino Harry N Silalahi Hasanusi, Mohammad Henderina J. Keiluhu Hendra Kurniawan Maury Hendri Hendri Hendri Hendri Lisiard Dimara Marhan Manaf Marhan Manaf Marhan Manaf Marthin Matulessy Muhammad Irwan Philipus Musyeri Rosye H.R. Tanjung Rumbiak, Ruben Safar Dody Safar Dody Safar Dody Selfanie Talakua Selfanie Talakua Selfanie Talakua Sembel, Luky Setiawan Mangando Setiawan Mangando Suci Widya Warnetti Suhaemi Sulfiana Wing Putri Suwito Suwito Syafrudin Raharjo Syafrudin Raharjo Tebay, Selvi Thomas Frans Pattiasina Tresia Sonya Tururaja TRESIA SONYA TURURAJA TRESIA SONYA TURURAJA Vera Sabariah Vera Sabariah Wikram Yori Turu Toja Yorry Kambanussy Yulianti Elisabet Demena Yulianti Elisabet Demena