STRUKTUR KOMUNITAS PLANKTON DI SUB DAERAH ALIRAN SUNGAI MARTAPURA, KABUPATEN BANJAR, 

PROVINSI KALIMANTAN SELATAN

STRUCTURE OF THE PLANKTON COMMUNITY IN THE MARTAPURA RIVER SUB-REGION, BANJAR DISTRICT,

SOUTH KALIMANTAN PROVINCE

Pijaini*, Abdur Rahman1 , Deddy Dharmaji2

Program Studi Manajemen Sumberdaya Perairan, Fakultas Perikanan dan Kelautan, Universitas Lambung Mangkurat

*Mahasiswa Fakultas Perikanan dan Kelautan

**Dosen Mahasiswa Fakultas Perikanan dan Kelautan

1Program Studi Manajemen Sumberdaya Perairan

Fakultas Perikanan dan Kelautan, Universitas Lambung Mangkurat

Jl. A. Yani, Km 36, Banjarbaru, 70714

Email : Pijaimuhammad22@gmail.com

ABSTRAK

Sub-DAS Martapura merupakan anak sungai yang terbesar di kota Banjarmasin. Sungai ini terletak di tengah-tengah kota, pada tepian sungai terdapat permukiman penduduk. Penelitian dilakukan di Kecamatan Karang Intan, Kecamatan Martapura dan Kecamatan Banjarmasin Barat. Struktur komunitas plankton di Sub DAS Martapura berdasarkan kelimpahan yaitu pada stasiun hulu, tengah dan hilir menunjukkan kesuburan sedang dengan kisaran nilai 100 – 40.000 sel/l atau ind/l, nilai rata-rata kelimpahan plankton jenis fitoplankton paling tinggi ditemukan distasiun I (Hulu). Keanekaragaman plankton pada Hulu, tengah dan Hilir yaitu termasuk kategori tercemar ringan dalam keadaan struktur stabil. Indeks Dominasi ketiga lokasi sampling termasuk kategori tidak ada spesies yang mendominasi namun zooplankton pada stasiun tengah termasuk dalam kategori mendominasi. Berdasarkan parameter nitrat, Rerata nitrat pada stasiun hulu sebesar 0,45 mg/l termasuk kategori oligotrofik, rerata nitrat pada stasiun tengah sebesar 1,1 mg/l kategori mesotrofik dan rerata nitrat pada stasiun hilir sebesar 0,6 mg/l kategori oligotrofik dan berdasarkan parameter fosfat, rerata fosfat pada stasiun hulu sebesar 1,95 mg/l termasuk kategori eutrofik, rerata fosfat pada stasiun tengah sebesar 0,24 mg/l termasuk kategori eutrofik , sedangkan rerata fosfat pada stasiun hilir sebesar 0,42 mg/l termasuk kategori eutrofik. Berdasarkan perhitungan storet ketiga stasiun menunjukkan kategori cemar sedang dengan total skor -18.

Kata Kunci : Sub DAS Martapura, Fitoplankton, Zooplankton, Kesuburan Perairan 

ABSTRACT

The Martapura sub-watershed is the largest tributary in the city of Banjarmasin. This river is located in the middle of the city, on the banks of the river there are residential areas. The research was conducted in Karang Intan District, Martapura District and West Banjarmasin District. The structure of the plankton community in the Martapura sub-watershed based on abundance, namely at the upstream, middle and downstream stations showed moderate fertility with a value range of 100 – 40,000 cells/l or ind/l, the highest average value of the abundance of plankton types of phytoplankton was found at station I (upstream) . The diversity of plankton in the upper, middle and lower reaches is categorized as slightly polluted in a state of stable structure. The dominance index of the three sampling locations is in the category of no dominating species but the zooplankton at the middle station is included in the dominating category. Based on nitrate parameters, the average nitrate at the upstream station was 0.45 mg/l including the oligotrophic category, the average nitrate at the middle station was 1.1 mg/l for the mesotrophic category and the average nitrate at the downstream station was 0.6 mg/l for the oligotrophic category and based on the phosphate parameter, the average phosphate at the upstream station was 1.95 mg/l including the eutrophic category, the average phosphate at the middle station was 0.24 mg/l including the eutrophic category, while the average phosphate at the downstream station was 0.42 mg/l including eutrophic category. Based on the storet calculations, the three stations show a moderately polluted category with a total score of -18.

Keyword : Martapura watershed, Phytoplankton, Zooplankton, Water Fertility