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All Journal Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan
Adithia Netanyahu Purba
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Earth & Planetary Sciences

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Trophic State of The Tajwid Lake, Langgam District, Pelalawan Regency, Riau Province Based on Trophic State Index Adithia Netanyahu Purba; Madju Siagian; Asmika H Simarmata2
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract

 ABSTRACT Many activities in the Tajwid 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 Tajwid Lake based on TSI has been conducted in March - April 2018. There were two sampling points, in the surface (0.5 m) and 2 secchi depth (1.1 m). Sampling were conducted 3 times, once/week. Water quality parameter measured were total phosphorus, chlorophyll - a, transparancy, temperature, dissolved oxygen, and pH. Results shown that the transparancy was 0.47 - 0.55 m, total phosphorus 0.323      - 0.624 mg/L, chlorophyll - a6.03-10.71 µg/L, temperature 29.5 - 30.3 0C, pH 5, and dissolved oxygen 4.96 - 5,66 mg/L. TSI(Trophic State Index) value of The Tajwid Lake was 70.01 - 72.19, and it indicates that the Tajwid Lake water is in hypereutrophic.Keywords: Water Quality, Carlson’ Trophic State Index, Hypereutrophic,Lake
Co-Authors Asmika Harnalin Simarmata Madju Siagian