CD Skripsi
Tingkat Kesuburan Danau Pekak Desa Buluh Nipis Kecamatan Siak Hulu Kabupaten Kampar Berdasarkan Trophic State Index
Abstract
Many activities in the Pekak Lake contribute the input of organic and anorganic matter that affects the water quality, especially nutrient concentration in waters. A research aims to understand the trophic state of the Pekak Lake based on TSI has been conducted in April-May 2018. There were 3 stations, namely in the inlet, midle part of the lake and the end area of the lake. In each station, there are 2 sampling points, in the surface (0.2 m) and 1 Secchi depth (0.75 m). Sampling were conducted 3 times, once/week. Water quality parameters measured were total phosphate, chlorophyll-a, transparancy, dissolved oxygen, CO2, pH and temperature. Results shown that the total phospate was 0.152-0.508 mg/L, chlorophyll-a 7.061-11.186 µg/L, transparency 0.69-0.77 m, dissolved oxygen 5.14-6.4 mg/L, CO2 8.81-16 mg/L, pH 5, temperature 27-30oC and TSI (Trophic State Index) value 64.559-70.465. Based on TSI, the Pekak Lake can be categorized as moderate eutrophic-hypereutrophic.
Keywords: Kampar River, Eutrophic-hypereurophic, Oxbow Lake, TSI
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