The Impact of Aquatic Productivity on Fishermen's Catches in Kawasi and Soligi Villages on Obi Island, South Halmahera
DOI:
https://doi.org/10.61741/JMBI.2026.v4.p10-17Keywords:
Aquatic Productivity , Fishermen, Obi Island, SoligiAbstract
This study examines the seasonal association between aquatic productivity, fishermen’s catch, and income in the waters of Obi Island, South Halmahera Regency, Indonesia. Aquatic productivity was represented by chlorophyll a concentration and sea surface temperature (SST) derived from Aqua MODIS satellite imagery for the period 2022–2023. Satellite data were processed to describe variability across the east and west monsoons and the two transitional seasons. Fisheries data, including catch volume, fishing frequency, and income, were collected through surveys of active fishermen in Soligi and Kawasi Villages using a purposive sampling approach. All datasets were analysed descriptively to examine the correspondence between seasonal oceanographic conditions and fishing performance. The results show that chlorophyll a concentrations ranged from 0.01 to 1.50 mg/m³, with higher values during the east monsoon (May–June) and lower values during transitional season I (July–September). Sea surface temperature varied between 25.0 and 31.0 °C, with relatively lower temperatures observed during transitional season I. Periods characterised by higher chlorophyll-a concentrations were accompanied by increased fishing activity, during which catches reached approximately 100–500 kg per trip per month, whereas lower chlorophyll-a conditions were associated with reduced catches of about 10–50 kg per trip per month. The average monthly income of fishermen in Soligi Village is IDR 10,677,845, while in Kawasi Village, where fishermen earn IDR 11,948,611 per trip and average 12 trips per month, their monthly income reaches IDR 143,383,332.
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The data that support the findings of this study are available from the corresponding author, upon reasonable request.
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