Razky Yatul Sidik

ETD - Unsyiah Central Library

ELECTRONIC THESIS AND DISSERTATION UNSYIAHTITLESTRUKTUR KOMUNITAS MAKROZOOBENTOS DI BEBERAPA MUARA SUNGAI KECAMATAN SUSOH KABUPATENACEH BARAT DAYAABSTRACTABSTRAKPenelitian tentang struktur komunitas makrozoobentos di beberapa muara sungai Kecamatan Susoh Kabupaten Aceh Barat Daya.Penelitian ini bertujuan untuk menentukan struktur komunitas makrozoobentos yang hidup di beberapa muara sungai KecamatanSusoh Kabupaten Aceh Barat Daya berdasarkan kepadatan jenis, indeks keanekaragaman, keseragaman dan dominansi. Penelitianini dilakukan pada bulan Februari sampai Maret 2016. Terdapat 5 lokasi stasiun penelitian yaitu Pulau Kayu, Kedai Susoh, PalakKerambil, Sangkalan dan Rubek Meupayong. Pengambilan sampel pada setiap stasiun penelitian dilakukan dengan menggunakanmetode purposive sampling yaitu berdasarkan pertimbangan tertentu atas keberadaan sampel di lokasi penelitian, pada setiap stasiundilakukan pengulangan sebanyak 5 kali secara acak. Hasil penelitian ditemukan 18 spesies makrozoobentos yang tergolong dalam 3kelas yaitu Gastropoda, Bivalvia dan Malacostraca. Kepadatan tertinggi terdapat pada stasiun Sangkalan dengan jumlah 157 ind/m2dan terendah pada stasiun Pulau Kayu dengan jumlah 64,8 ind/m2. Nilai indeks keanekaragaman (Hâ€™) pada semua stasiunberkisar antara 0,68-1,11, nilai ini tergolong dalam kategori sedang, nilai indeks keseragaman berkisar antara 0,31-0,60 tergolongdalam kategori rendah sampai sedang, dan nilai indeks dominansi berkisar antara 0,23-0,36 tergolong dalam kategori rendah.Kata kunci: Makrozoobentos, Kepadatan, Keanekaragaman, Aceh Barat Daya   ABSTRACTThis research was about  the structure of macrozoobenthos community in several estuary in Susoh Subdistrict of West Aceh(Abdya). The aim of this research was to determine macrozoobenthos community which lives in several river mouths in Susohsubdistrict of West Aceh (Abdya) based on species density, index diversity, evenness, and dominance. The research was conductedfrom February to March 2016. There was 5 research stations. Namely, Pulau Kayu, Kedai Susoh, Palak Kerambi Sankalan andRubek Meupayong. The sample collected in each research station was perfomed by using purposive method based on certainconsideration of the sample existence in research location. It was implemented 5 repetitions randomly in each station. The result ofresearch showed 18 macrozoobenthos species which was classified into 3 sections, namely Gastropoda, Bivalvia and Malacostraca.The highest density was found in Sangkalan station with number 157 ind/m2 and the lowest was found in Pulau Kayu station bynumber 64,8 ind/m2. The diversity index (H') in all stations ranged between 0,68-1,11. This value was included in mediumcategory. While the evenness index ranged between 0,31-0,60 included in low to medium category, and lastly the dominance indexranged about 0,23-0,36 included in low category.Keywords: Macrozoobenthos, Density, Diversity, West Aceh (Abdya)

STRUKTUR KOMUNITAS MAKROZOOBENTOS DI BEBERAPA MUARA SUNGAI KECAMATAN SUSOH KABUPATEN ACEH BARAT DAYA

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