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KELIMPAHAN Acanthaster planci DI PERAIRAN PULAU TUNDA KABUPATEN SERANG, BANTEN Neviaty p. Zamani; Lalang Lalang; Riska Riska
BioWallacea : Jurnal Penelitian Biologi (Journal of Biological Research) Vol 4, No 2 (2017): Biodiversity Wallacea
Publisher : University of Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (441.081 KB) | DOI: 10.33772/biowallacea.v4i2.4237

Abstract

ABSTRAK Acanthaster planci memainkan peranan penting dalam keseimbangan ekosistem terumbu karang. Apabila jumlahnya melimpah maka akan menjadi hama bagi ekosistem terumbu karang. Oleh karena itu kelimpahan A. planci dapat dijadikan indikator kesehatan terumbu karang. Penelitian ini dilakukan untuk mengetahui kelimpahan A. planci dan  kondisi terumbu karang di perairan Pulau Tunda Kabupaten Serang, Banten. Penelitian ini dilaksanakan pada Bulan Januari 2014. Penentuan stasiun pengamatan dilakukan dengan metode purposif sampling. Stasiun penelitian ditetapkan berdasarkan empat arah mata angin : Utara, Selatan, Timur, dan Barat. Pengambilan data karang menggunakan metode Line Intercept Transect (LIT) sedangkan pengambilan data A. Planci dengan menggunakan metode Belt Transect. Parameter perairan yang diukur adalah suhu, salinitas, kecerahan dan kecepatan arus. Hasil pengukuran parameter fisika–kimia perairan di lokasi pengamatan masih menunjukan kisaran normal yang menunjang bagi kehidupan biota karang dan A. planci, suhu perairan berkisar antara 26-290C, kecerahan perairan 100%, kecepatan arus berkisar antara 0,05 ms-1-0,19 ms-1, dan salinitas berkisar antara 30-32 ppt. Persentase penutupan karang berkisar antara 54,95-73,00% dengan kriteria “Baik”. Kelimpahan A. planci berkisar antara 0,03-0,02 ind/m2. Dari hasil pengukuran persentase penutupan karang dan kelimpahan A. Planci tidak menunjukkan hubungan yang signifikan, karena A. planci hanya memakan polip karang. Hal ini memungkinkan karang untuk segera pulih kembali setelah serangan dari A. planci berhenti. Kata Kunci: Terumbu karang, A. planci, Pulau Tunda. ABSTRACT Acanthaster planci plays an important role in the balance of coralreef ecosystems. If the amountis abundant it will be a pest to the coralreef ecosystem. Hence the abundance of A.planci can be used as indicators of the health of coral reefs.This study were to investigate the abundance of A. planci and coral reff condition in habiting the island of Tunda in Serang Regency, Banten. The study was conducted in January, 2014. Purposive sampling was used to determine the observed station. The station was also decided by considering four wind directions: north, south, east, and west. Line Intercept Transect (LIT) was applied to find out the coral cover, while Belt Transect was used to measure A. planci abundance. Water quality parameters were also measured including temperature, salinity, water clearence and water current. Results showed that water quality was in to larebale range to support both the coral and A. planci live. Water temperature ranged from 26-29oC, water clearence was 100%, velocity ranged from 0.05 ms-1–0.19 ms-1, and salinity ranged from 30-32 ppt. The coral cover ranged from 54,93-73,00% and ranged from in ”good” category. A. Planci abundance ranged from 0,03-0,07 ind/m2. There was no significant correlation between the percentage of the coral cover and A.planci abundance since the organism is a coral pholyp feeder. Key words: Coral reef, A. planci, Tunda Island.
ABUNDANCE OF Acanthaster planci AS HEALTH OF CORAL INDICATOR IN TUNDA ISLAND, SERANG REGENCY, BANTEN Neviaty P. Zamani
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 7 No. 1 (2015): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (242.526 KB) | DOI: 10.29244/jitkt.v7i1.9811

Abstract

The abundance of Acanthaster planci can be used as a health indicator of coral reef ecosystem. A high abundance of A. planci become phatogen on coral and an indication of unhealthy coral reef ecosystem. The objective of this study was to evaluate health of coral reef ecosystem based on the abundance of A. planci and the percent coral cover at Tunda Island, Banten. Field observation conducted in January 2014. The stations were selected by purposive sampling method and based on four-wind direction i.e., north, south, east, and west. Reef data was measured using Line Intercept Transect (LIT), while sampling method for A. planci using Belt Transect. Results showed that the water temperature ranged of 26-28°C, brightness 100%, current speed ranging between 0.05 ms-1and 0.19 ms-1, and salinity  of 30-32 ppt. The water quality values showed a normal range which support  the life of the coral and A. planci.  The Percent coral cover ranged of 54.95-73.00% indicating a good condition. The abundanceof A. planci was of 0.02-0.03 ind/m2. Result showed that coral cover percentage and the abundance of A. planci did not have a significant relationship. Eventhough an A. planci eats the coral polip, but with small amount of A. planci in the coral reef, they merely help to clean the old and unhealthy polip.  This activity will help corals to regenerate their polip. Overall, based on the small abundance of A. planci and the relatively high coral cover percentage, the coral reef ecosystem in Tunda island was categorised in a healthy condition. Keywords: A. planci, coral reef, Tunda Island