Kualitas Perairan di Muara Jangari-Waduk Cirata  

Oleh:

Garno, Yudhi Soetrisno

Jenis: Article from Journal - ilmiah nasional
Dalam koleksi: Jurnal Hidrosfir Indonesia vol. 2 no. 3 (Dec. 2007), page 125-136.
Topik: Jangari; Organic Waste; Ptiytoplankton; Eutrophic.

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: HH12.1 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

It has been known that Jangan is an area in Cirata reservoir that could be developed as tourism area. Lately in this area have been developing many cages for fish culture that produce organic waste in huge number and polute this area. This research was conducted to know the status and dynamic of water quality in Jangari that receive organic waste in huge number. This research concluded that Jangari water body could be cited as an eutrophic waferbody This conclusion was due to (i). The concentrations of phosphorus was always higherthan 0,016 mg-t’Pand nitrogen total was alwayshigherthan 0,711 ,ngxf’N; (ii). The density of fitoplankton in 25 cm depth was between 36.590 X10 and 40. 710x10 ind.I whereas in 150 cm depth was between 29.620 x103 and 36.370 x103 md.!-t. This phytoplankton community was dominated by Cyanophyta (70,9%-78.2%); (iii). The vanishing point of secchi disc was always smallerthan 71cm. Although the community of phytoplankton was dominated by cyanophyta, especially Microcystis sp dan Oscillatoria sp that have been known as an unpalatable algae but the presence of zooplankton in the water body could be detected. During the research zoop!ankton was dominated by copepoda, dadosera and rotifera with density fluctuate between 34-394 md.!-’. The eutrophic status for Jangari will threaten the sustainable potency for tourism area; and therefore it was suggested to build one management for Cirata rese,voirwhicM could be hoped to plan, do and evaluate the de velopment of Cirata appropriate to the potency and car, yng capasityof reservoir.

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