LAKE KERINCI

+Kerinci lake, which origin is uncertain, has two outlets, Segara Agung and Batang Kali rivers. The fisheries activities are intense. It had the very average chemical characteristics in the epilimnia in Indonesia, but pH was rather low. The lake is governed by a large wetland area and floating vegetation. Due to logistical hardships no observations of the stratification could be made, and no vertical sampling could be performed. The total nutrient concentrations of the outlet water were 0.380 mg/l N and 0.080 mg/l P, chlorophyll a concentration was 17.17 mg/cu m, and biomass 0.19 mg/l. The high chlorophyll concentration may be due to sampling error. The dominant species was in August 1993 raphidophyte Gonyostomum semen, and other well represented algae were dinophyte Peridinium cf. gutwinskii, conjugatophyte Spondylosium secedens and chlorophytes Monoraphidium contortum and Crucigenia tetrapedia. The state of the lake is good, but some threats may come from the large surrounding agricultural area.

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