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All Journal Journal of Marine Research Jurnal Kelautan Tropis
Samsuardi Samsuardi
Yayasan Minang Bahari
Earth & Planetary Sciences

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Penilaian Indeks Kesehatan Terumbu Karang di TWP Selat Bunga Laut, Kabupaten Kepulauan Mentawai Suparno Suparno; Yempita Efendi; Arlius Arlius; Mas Eriza; Bukhari Bukhari; Samsuardi Samsuardi; Yennafri Yennafri; M. Yaser Arafat
Jurnal Kelautan Tropis Vol 24, No 1 (2021): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v24i1.6449

Abstract

Coral reefs condition in the protected marine area at Selat Bunga has decreased every year.  The health of coral reefs is represented by coral index health. The purpose of this study was to analyze the coral reefs health index based on the condition of live coral cover, resilience level and condition of coral fish. Retrieval of coral reefs data using the Under Photo Transect Method and coral fish data collection using the Under Water Visual Census. The results of research at 9 research stations found that the average cover of live coral ranged from 1.40 - 44.68%, fleshy seaweed ranged from 0.13% - 12.87%, rubble ranged from 1.73 - 39.40%, and average total reef fish biomass ranged from 8.93 - 253.23 kg/ha. Coral reef health index values range between 3-6. Coral reefs health index of 67% of research stations is 3. The coral health index value 3 is indicated by a low percent live coral cover, a high resilience rate, and a low reef fish biomass.Kondisi terumbu karang di Kawasan Konservasi Taman Wisata Perairan (TWP) Selat Bunga Laut  telah mengalami penurunan setiap tahun.  Indeks kesehatan karang adalah nilai yang mengambarkan kesehatan karang antar lokasi penelitian. Tujuan penelitian ini adalah menganalisis indeks kesehatan terumbu karang berdasarkan kondisi tutupan karang hidup,  tingkat resiliensi dan kondisi ikan karang.  Pengambilan data terumbu karang dengan metode Under Photo Transect dan pengambilan data ikan karang mengunakan Under Water Visual Census. Hasil penelitian di 9 stasiun penelitian didapatkan persen rata-rata tutupan karang hidup berkisar  1.40- 44.68 %, fleshy seaweed berkisar  0.13% - 12.87%, pecahan karang berkisar 1.73 –39.40 %, dan rata-rata total biomassa ikan karang berkisar 8.93 – 253.23 kg/ha. Nilai indeks kesehatan terumbu karang berkisar antara 3-6. Sebanyak  67% stasiun penelitian mempunyai indeks kesehatan terumbu karang dengan skala 3. Indeks kesehatan karang skala 3 ditunjukkan  oleh  persen tutupan karang  hidup yang rendah, tingkat resiliensi yang tinggi dan biomassa ikan yang rendah.
Population Status of Napoleon Wrasse (Cheilinus undulatus) at Bando Island, West Sumatra Fadhlan Basiluddin Rahmat; Nur Jasilah; Samsuardi Samsuardi; Andreas Kunzmann
Journal of Marine Research Vol 15, No 1 (2026): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v15i1.50811

Abstract

The Pieh Marine Protected Area (MPA) in West Sumatra serves as a critical habitat for the endangered Napoleon wrasse (Cheilinus undulatus), a species listed under CITES Appendix II and nationally protected in Indonesia. Reports from local communities suggested the reappearance of this species at Bando Island after years of presumed absence. This study aims to assess the current status and potential recovery of Napoleon wrasse populations within the island’s core conservation zone. Field surveys conducted in June 2024 used a GPS-based underwater visual census (UVC) to estimate population density and theoretical stock size. Two individuals a juvenile (~20 cm) and an adult (~60 cm) were recorded along a total transect area of 6.64 ha, resulting in a density of 1 individual/ha and a theoretical stock of 0.035 individual across the island’s 28 ha coral reef area. Habitat assessment revealed moderate live coral cover (40%) and high substrate heterogeneity, including dead coral, rubble, and sand, which provide structural complexity, favourable for reef fish. However, the observed density falls within the “very low” category of the national conservation scale, indicating a severely depleted population. These findings suggest that despite suitable habitat conditions, the Napoleon wrasse population remains critically low and functionally vulnerable. Immediate conservation actions such as establishing no-take zones, restoring coral habitats, enhancing monitoring, and regulating the live reef fish trade are recommended to enable natural recolonization and recovery of this iconic species within the Pieh MPA.
Co-Authors Andreas Kunzmann Arlius Arlius Bukhari Bukhari Fadhlan Basiluddin Rahmat M. Yaser Arafat Mas Eriza Nur Jasilah Suparno . Yempita Efendi Yennafri Yennafri