ECOLOGICAL ASPECT OF NON PRODUCTIVE FISHPONDS AT MAHAKAM DELTA AREA:REVITALIZATION WITH SILVOFISHERY SYSTEM (Published)
Mahakam Delta area utilization for various purposes, especially for intensive aquaculture has led to degradation of the land quality and mangrove vegetation both in ecological terms. The research was conducted in the Mahakam Delta to assess the ecological aspect revitalization of non productive fishponds at Mahakam Delta with silvofishery system which is a combination of fishery and forestry in one unit of land management. The research was conducted by surveys, interviews, laboratory analysis and tracking of secondary data relating to the revitalization activities of fishponds at Mahakam Delta with silvofishery system. The results of the study are: [1] Revitalization of non productive fishponds at Mahakam Delta with silvofishery system was conducted by government and local community, applied Traditional Ditch Fishponds with three types of bakau planting site, i.e.: permanent flooded, periodically flooded and not flooded site. [2] Five major parameters of water quality in the 2 to 8 years ages silvofishery fishponds, (Temperature: 25 to 28 C; Transparency: 40 to 60 cm; pH: 6.7 to 7.36; Salinity: 13 to 20 ppt; Dissolved Oxygen: 3.2 to 5.7 ppm) are relatively stable and meets the quality standard suitability for cultivation of shrimp, milkfish and crabs.
Keywords: Fishpond, Intensive aquaculture, Mahakam Delta, Revitalization, Silvofishery system.