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Irwan Nababan
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Earth & Planetary Sciences

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Trophic Status of the Koto Tibun Reservoir, Kampar District, Riau Province Based on Trophic Index (TRIX) Irwan Nababan; Clemens Sihotang; Asmika Harnalin Simarmata
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract

Abstract  Koto Tibun Reservoir receivedwater from the Tibun River.In the area around the upstream of the river, however, there are many human activities that nutrient the river and as a consequence affects the trophic status of the dam. To understand the trophic status of the dam based on Trophic Index (TRIX), a research was conducted in February – March 2018. There were 3 sampling stations namely Station 1 (riverine zone), Station 2 (transition zone) and Station 3 (lacustrine zone). Samples were taken once/week. Water quality parameters measured were DIN (Dissolved Inorganic Nitrogen), total phosphorus, dissolved oxygen, chlorophyll-a, transparency, temperature and pH. Results shown that the transparency was 75.3–78.6cm, temperature 25.5–25.80C, pH 5, total phosphorus 0.13–0.19 mg/L, DIN 0.45–0.50 mg/L, chlorophyll-a 3.10–3.97 μg/L and oxygen saturation 57.17–68.17 %. The TRIX value ranged from 2 to 2.5 and indicates that the Koto Tibun Reservoir can be categorized as mesotrophic. Keyword :Koto Tibun Dam, Water quality, Nutrient, Mesotrophic
Co-Authors Asmika Harnalin Simarmata Clemens Sihotang