Electronic Theses and Dissertation

Tujuan penelitian ini adalah untuk mengetahui sebaran klorofil-a serta kualitas air di sungai krueng raba lhoknga, aceh besar. penelitian ini dilakukan pada bulan mei 2016. pengambilan sampel dilakukan dengan cara purpossive sampling pada 5 stasiun pengamatan yang mewakili daerah sungai, muara dan laut. hasil penelitian menunjukkan bahwa, konsentrasi klorofil-a tertinggi diperoleh di stasiun 3 (muara sungai) sebesar 4,55 µg/l dan terendah di stasiun 4 (laut) sebesar 0,43 µg/l. kelas bacillariophyceae mendominasi di sungai krueng raba, dengan kelimpahan tertinggi diperoleh sebesar 603,28 ind/l. kata kunci: klorofil-a; kualitas air; sungai krueng raba the objective of this research was to figure out the distribution of chlorophyll-a and the water quality of krueng raba river in lhoknga, aceh besar. the research was conducted on may 2016. sampling was carried out using purpossive sampling method at 5 stations included the river area, estuary and inshore. the result showed the highest chlorophyll-a concentration was obtained at station 3 (estuary) and the lowest was at station 4 (inshore) with numbers respectively 4.55 and 0.43 µg/l. bacillariophycea dominating the river with the highest value of density was 603.28 ind/l. keyword: chlorophyll-a; water quality; krueng raba river