Abstract
Reef Check is an activity to find out the condition of coral reefs and its surrounding ecosystems be then described and categorized its healthiness. The island of Java is one of the Islands in Indonesia that has lots of beaches, especially for East Java, here they have several areas that has become our research site in Sempu Strait, Sendang Biru, South Malang they are called Teluk Semut, Watu Meja, and Waru-waru. Underwater Visual Census (UVC) was used as a method for this research to identify reef fish in a transect of 100 x 5 x 5m scale in (Length, Width, and Height). Results shows several fishes was used to identify yet the family of Chaetodontidae with mean abundance 8 in Teluk Semut 1 station, 2.25 in Teluk Semut 2 station, 12.5 in Rumah Ikan station, & 13.5 in Watu Meja station. Watu Meja and Fish Apartment station shows higher mean abundance than other station, this indicates coral reefs ecosystem in this station have a better health & condition compare to the other stations. Results for family family Haemulidae, Snapper and Grouper shows low mean abundance, that indicates overfishing on Sempu Strait, South Malang. In other cases, the purposes of Reef Check is to determine the extents of human activities and its impact against the distribution and the healthiness of coral reefs in the area. For further extent, there has been still indications toward its management system yet fisheries potential in certain areas for this research.
Highlights
Abstrak Salah satu tujuan Reef Check adalah untuk menentukan luasan sebaran dampak aktifitas manusia terhadap sebaran terumbu karang
an activity to find out the condition of coral reefs
this indicates coral reefs ecosystem in this station have a better health & condition compare to the other stations
Summary
Terumbu karang di selatan Jawa Timur tersebar hampir diseluruh perairan laut selatan, dimulai dari kawasan timur yakni Banyuwangi, Jember, Malang, Tulungagung hingga Pacitan yang merupakan kabupaten paling barat (Rahmania, 2016; Luthfi et al, 2016; Luthfi et al, 2016). Ikan terumbu Chaetodontidae, yang secara global memiliki 12 genus dan 129 spesies (Froese and Paul, 2012). 2. Facultative coral feeder yakni apabila ikan ini memakan karang sebagai makanan utama dan terkadang memakan invertebrate yang ada dikarang sebagai makanan tambahan. Contoh ikan dari family Chaetodontidae adalah Chaetodon kleinii dan C. trifasciatus. C. trifasciatus memakan banyak karang jenis Acropora, secara spesifik adalah A. clathrate yang berbentuk meja dan A. Berdasarkan pengamatan dan wawancara dengan nelayan setempat, kegiatan penangkapan ikan ekonomis penting dan ikan indicator di Selat Sempu tampaknya sudah mulai menurun karena memang ukurannnya yang semakin kecil. Tujuan dari penelitian ini adalah untuk mengetahui kelimpahan ikan terumbu baik yang bersifat ekonomis penting maupun sebagai ikan indicator yang berada pada Selat Sempu, Kabupaten Malang. Kelimpahan ikan tiap jenis mulai dihitung dengan batasan jarak pantau 2,5m pada sisi kiri dan kanan transek (English et al, 1997). Ilustrasi metode pengambilan data ikan karang menggunakan underwater visual census (UVC) (Hill and Clive, 2004)
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