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description Journal article public Journal of Fisheries and Marine Research

Tingkat Kesuburan Perairan di Waduk Wonorejo dalam Kaitannya dengan Potensi Ikan

Setya Widi Ayuning Permanasari, Ms Kusriani, Putut Widjarnako
Diterbitkan 2017

Abstrak

Wonorejo Reservoirs gets input water is constantly being from Kali Wangi with carrying burdens waste of human activities, agriculture, settlement and animal husbandry. So, that it can trigger fertility on reservoir waters. Water trophic levels can be described from the primary productivity and useful to estimate production of fish in these waters. The purpose of the research was to identify the influence of productivity primary waters and the potential fish are caught in Wonorejo Reservoirs. The methodology used observatorial methods and for water trophic level used Tropic State Index Method. Water quality in reservoir got the temperature ranges 29-31oC, Secchi disk range 57,5-98,5 cm. Chemical parameter obtained pH range, DO range 6,21-10,03 mg/l, CO2 range 3,9-18,97 mg/l, nitrat range 0,54-1,6mg/l and ortophospate range 0,005-0,168 mg/l. Chlorophyll-a values range 2,76-16,1 mg/m3. Primary Productivity 1,63-4,55 g C/m3/hari. TSI values range 51,282-61,080. The conclusion that water trophic level in Wonorejo Reservoirs are classified eutrofic heavy waters and fisheries potensial as much as 3963,252 ton fish/year. The results of the studied is expected to provide a reference to local government management and management Wonorejo Reservoirs in managing to appropriately , continuous and sustainable.

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