ANALISIS SEDIMEN DI BAWAH KERAMBA JARING APUNG (KJA) BERDASARKAN KEDALAMAN DI PERAIRAN DANAU MANINJAU

Abstract

                                                              ABSTRAK

Penelitian ini bertujuan untuk menganalisis  kandungan sedimen dan kualitas air yang berasal dari Keramba Jaring Apung berdasarkan kedalaman di perairan Danau Maninjau. Penelitian dilaksanakan pada bulan Maret-April 2017. Sampel di ambil di Danau Maninjau Kecamatan Tanjung Raya, Kabupaten Agam Sumatera Barat. Metoda yang digunakan dalam penelitian ini adalah Metode Deskriptif. Sampel sedimen dan kualitas airdiambil pada3 kedalaman  yaitu 20, 40 dan 60 m.Hasil analisis sedimen C-Organik pada kedalaman 20, 40, dan 60 m masing-masing adalah 12,66±1,24%, 8,91±0,17%, dan 7,58±0,21%. Total Nitrogen adalah 0,59±0,09%, 0,54±0,06%, dan 0,40±0,06%. Total Posporadalah 0,51±0,02%, 0,49±0,02%, dan 0.33±0,01%. Sedangkan pada kualitas air total N pada kedalaman 20, 40, dan 60 m masing-masing adalah 1,57±0,01 mɡ/L, 1,61±0,01 mɡ/L, dan 1.92±0,01 mɡ/L. Total P adalah 1,57±0,11 mɡ/L,0,36±0,01 mɡ/L, dan 0,56±0,01mɡ/L. TDS adalah 11,5±0,01 mɡ/L, 18,73±0,01 mɡ/L, dan 30,26±0,01 mɡ/L. pH adalah 6,00±0,00, 6,00±0,00, dan 6,00±0,00.

Kata Kunci : Danau Maninjau, Sedimen, kualitas air, Kedalaman Air.

ABSTRACT

The aims of the research was to analyze the content of sediments and water quality which come from Floating Nets Cages based on the depth of waters on ManinjauLake. Research was conducted on March to April 2017. Samples was taken at ManinjauLake in Tanjung Raya, Agam Regency of West Sumatera. Descriptive method was used in the experiment. Sediment and water quality samples was taken at 3 different depth which are 20, 40 and 60 m. The results of C-Organic analysis at the depth of 20, 40, and 60 m were 12.66±1.24%, 8.91±0.17%, and 7.58±0.21%. The total nitrogen were 0.59±0.09%, 0.54±0.06% and 0.40±0.06%, respectively. The total Phosphorous were 0.51±0.02%, 0.49±0.02%, and 0.33±0.01%. Meanwhile the water quality analysis of total N at the depth 20, 40, and 60 m were, 1.57±0.01 mɡ/L, 1.61±0.01 mɡ/L, and 1.92±0.01 mɡ/L respectively. Total Phosphorous were 1.57±0.11 mɡ/L, 0.36±0.01 mɡ/L, and 0.56±0.01mɡ/L. The TDS values were 11.5±0.01 mɡ/L, 18.73±0.01mɡ/L, and 30.26±0.01 mɡ/L. pH value were 6.00±0.00, for all levels of depth.

Keywords: Maninjau Lake, Sediment, water quality, Depth waters.