Environmental Problems in Developing Aquaculture in the Jatigede Reservoir, West Java, Indonesia | ||||
| Egyptian Journal of Aquatic Biology and Fisheries | ||||
| Article 217, Volume 29, Issue 4, July and August 2025, Page 2939-2955 PDF (790.71 K) | ||||
| DOI: 10.21608/ejabf.2025.449305 | ||||
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| Author | ||||
| Iskandar et al. | ||||
| Abstract | ||||
| The inundation of Jatigede Reservoir significantly impacted the local environment and communities. While aquaculture could alleviate economic hardship, floating net cages (FNC) were banned to protect water quality. However, this still led to unintended environmental issues, particularly waste from the Cimanuk River during rainy seasons. This study analyzed waste composition at the reservoir's inflow and investigated water surface dynamics, aiming to inform future floating net cage aquaculture development in Jatigede. The study was conducted in Jatigede reservoir, Sumedang, West Java. Field investigation on waste distribution was conducted between February 15th and April 30th, 2023. Waste samples were collected by transect 2 × 2 meters on 5 spots at the Jatigede inlet from the Cimanuk River. Water samples of combined sources were collected from 4 sampling points representing the reservoir's inlet, middle, and outlet to evaluate water quality parameters, viz. temperature, pH, transparency, dissolved oxygen, and ammonia, assessing their suitability for aquaculture production. The temporal water surface dynamics were determined using Sentinel remote sensing data (2022 – 2023), with a spatial resolution of 10 meters, applying Normalized Difference Water Index (NDWI) in ArcMap 10.8. The large size of organic waste dominates Jatigede Reservoir's composition, increasing during rainy seasons due to higher Cimanuk River flow. Remarkably, water quality remains suitable for aquaculture. However, the reservoir surface area fluctuated between 2,600-4,100 ha from April 2022 to December 2023, peaking in June and reaching the lowest in December. According to the FNC estimation calculation, about 3,279 floating net cages operate in the reservoir's center, where the water volume is least stable. Environmental problems found in Jatigede Reservoir for aquaculture development include waste pollution and fluctuating water volume. To mitigate this issue, it is recommended to install the waste trap in the inlet of the aquaculture system, and estimate the carrying capacity of the reservoir for floating net cage installation. | ||||
| Keywords | ||||
| Floating net cages; Surface water; Waste composition; Water quality | ||||
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