Electronic Theses and Dissertation

Taman Wisata Alam Laut (TWAL) Aceh Singkil merupakan Taman Wisata Alam Laut berupa gugusan pulau-pulau kecil, secara administrasi termasuk di wilayah Kabupaten Aceh Singkil, Provinsi Aceh. Pembentukan kawasan TWAL memberikan beragam fungsi dan manfaat, seperti rekreasi, pendidikan, penelitian dan pelestarian yang berkelanjutan. Untuk menunjang keberlanjutan dalam menjaga ekosistem terumbu karang perlu dilakukannya survei ekosistem terumbu karang khususnya kelimpahan ikan karang herbivora. Penelitian ini dilaksanakan pada bulan januari tahun 2021 dengan menggunakan metode purposive sampling. Data diambil pada 12 titik yang terbagi dalam tiga kawasan, yaitu kawasan padat penduduk, kawasan perlindungan, dan kawasan kontrol. Pencatatan data ikan karang herbivora dilakukan dengan metode Visual Sensus menggunakan Belt Transect. Secara keseluruhan persentase rata-rata kelimpahan ikan karang dikawasan TWAL Kepulauan Banyak sebesar 277 Ind/ha. Jumlah individu ikan karang sebanyak 894 individu dari 16 spesies terdapat 6 genus dan 5 family ikan karang herbivora. Kelimpahan ikan karang herbivora tertinggi pada kawasan kontrol sebesar 345,61 Ind/ha dan kelimpahan terendah pada kawasan padat penduduk sebanyak 226,30 Ind/ha. Korelasi antara ikan karang herbivora dan tutupan alga adalah (R2 = 0,9817) merupakan korelasi posistif artinya semakin tinggi tutupan karang di kawasan tersebut makan semakin tinggi juga kelimpahan ikan karang herbivora di kawasan tersebut.
Kata Kunci : Ikan Karang Herbivora, Aceh Singkil, Alga, TWAL, Kelimpahan

Aceh Singkil Marine Nature Park (TWAL) is a Marine Nature Park in the form of a group of small islands, administratively included in the Aceh Singkil Regency, Aceh Province. The establishment of the TWAL area provides various functions and benefits, such as recreation, education, research and sustainable conservation. To support sustainability in maintaining coral reef ecosystems, it is necessary to survey coral reef ecosystems, especially the abundance of herbivorous reef fish. This research was conducted in January 2021 using purposive sampling method. Data were taken at 12 points which were divided into three areas, namely densely populated areas, protected areas, and control areas. Data recording of herbivorous reef fishes was carried out using the Visual Census method using Belt Transect. Overall, the average percentage of reef fish abundance in the Many Islands TWAL area was 277 Ind/ha. The number of reef fish individuals was 894 individuals from 16 species, there were 6 genus and 5 families of herbivorous reef fish. The highest abundance of herbivorous reef fish in the control area was 345.61 Ind/ha and the lowest abundance in the densely populated area was 226.30 Ind/ha. The correlation between herbivorous reef fish and algal cover is (R2 = 0.9817) is a positive correlation, meaning that the higher the coral cover in the area, the higher the abundance of herbivorous reef fish in the area. Keywords : Herbivorous Reef Fish, Aceh Singkil, Algae, TWAL, Abundance