Agus Dharmawan, Abiyyu Rahmawan, Anisa Meilia Ashoffi
Bawean is an island with 11.872 ha of area, located about 140 km from Gresik Districts, East Java. Bawean becomes one of the marine tourism destinations, especially in Noko island, which one of the small island areas lived by ± 700 peoples. Noko island located 4 km east from Bawean, surrounded by coral reefs. Ship traffic and fishing activities by local communities potentially damage the coral reefs ecosystem. This study aimed to determine the key species and identify the extent of coral reefs damage. The study was descriptive explorative using Belt Transects as far as 200 meters from the farthest coral reefs boundary in two different locations. Data were analyzed by Important Value Index and standard criteria damage for the coral reefs. This research found 87 coral reef species, and covering at location 1 was 85% for 1 m2 with five categories. Location 2 was 85% for 1 m2. According to the standard criteria, damage to coral reefs was in excellent condition. Acropora palifera is the key species with the highest density and frequency, location 1 with a density of 10.41% and frequency of 98%, location 2 by 18.5% density with frequency of 93%. © 2020 American Institute of Physics Inc.. All rights reserved.
Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Malang, 65145, Indonesia
