Community Structure of Coral Reef Ecosystem in Senoro-Toili Block
DOI:
https://doi.org/10.15575/biodjati.v11i1.54702Keywords:
biodiversity, coral cover, reef fishAbstract
Research on coral reef biodiversity within oil and gas operational areas remains limited, as most previous studies have focused on coastal ecosystems adjacent to urban environments. This study aims to assess coral reef condition and reef fish community structure in the Senoro–Toili Block, and to examine the relationship between coral cover and reef fish abundance. Field data were collected using Manta Tow and Line Intercept Transect (LIT) methods for coral reef conditions, while reef fish data were obtained through the Underwater Visual Census (UVC) method. Coral reef observations included percentages of live hard coral, dead coral, algae, and abiotic substrates. Fish data comprised species composition and abundance, which were analyzed at the family level. The relationship between reef fish abundance and live coral cover was tested using Pearson correlation analysis. The study results indicated that dead corals dominated the Senoro-Toili Block coral community, ranging from 17.62 to 52.68%. Evaluation of coral reef conditions shows moderate to high levels of damage, with a high mortality index, indicating that reef health is significantly compromised and may negatively impact associated reef fish populations. The reef fish community comprises 195 species across 37 families. The abundance of reef fish ranges from 1605 to 3105 individuals/500 m². The Pearson correlation showed a significant association between reef fish abundance and coral cover (p < 0.05). The diversity index was high, and the evenness index indicated a stable fish community. A low dominance index supported this. These conditions indicate that the reef fish community in the Senoro–Toili Block exhibits relatively high ecological resilience in response to both natural and anthropogenic disturbances. These results highlight the need for continuous management interventions, especially coral transplantation initiatives implemented in the study region.
References
Adiyoga, D., Hartati, R., & Setyati, W. A. (2020). Fluktuasi Ikan Karang di Kawasan Konservasi Laut Daerah Gili Sulat dan Gili Lawang, Lombok Timur. Journal of Marine Research, 9(2), 175–180. DOI: https://doi.org/10.14710/jmr.v9i2.26894
Adrim, M., Harahap, A. S., & Wibowo, K. (2012). Community Structure of Coral Reef Fishes at Kendari Waters Coral. ILMU KELAUTAN: Indonesian Journal of Marine Sciences, 17(3), 154–163. DOI: https://doi.org/https://doi.org/10.12912/27197050/190639
Afandy, Z., Damar, A., & Agus, S. B. (2019). Coral Recruitment Spatial Distribution in its Relation With Coral Cover and Herbivorous Fish Abundance Within Conservation Area. ILMU KELAUTAN: Indonesian Journal of Marine Sciences, 24(2), 91. DOI: https://doi.org/10.14710/ik.ijms.24.2.91-98
Arafat, Y., Gurning, R. O. S., & Pitana, T. (2013). Penilaian Risiko Labuh Jangkar Kapal Terhadap Kerusakan Terumbu Karang Dengan Simulasi Monte Carlo di Wilayah Kepulauan Raja Ampat – Papua Barat. Seminar Nasional Pascasarjana XI – ITS.
Brandl, S. J., Rasher, D. B., Côté, I. M., Casey, J. M., Darling, E. S., Lefcheck, J. S., & Duffy, J. E. (2019). Coral reef ecosystem functioning: eight core processes and the role of biodiversity. Frontiers in Ecology and the Environment, 17(8), 445–454. DOI: https://doi.org/10.1002/fee.2088
Bürgi, K., Bouveyron, C., Lingrand, D., Derijard, B., Precioso, F., & Sabourault, C. (2025). Towards a fully automated underwater census for fish assemblages in the Mediterranean Sea. Ecological Informatics, 85, 102959. DOI: https://doi.org/10.1016/j.ecoinf.2024.102959
de Carvalho-Souza, G. F., Llope, M., Tinôco, M. S., Medeiros, D. V., Maia-Nogueira, R., & Sampaio, C. L. S. (2018). Marine litter disrupts ecological processes in reef systems. Marine Pollution Bulletin, 133, 464–471. DOI: https://doi.org/10.1016/j.marpolbul.2018.05.049
Edrus, I. N., & Hadi, T. A. (2020). Struktur Komunitas Ikan Karang di Perairan Pesisir Kendari Sulawesi Tenggara. Jurnal Penelitian Perikanan Indonesia, 26(2), 59. DOI: https://doi.org/10.15578/jppi.26.2.2020.59-73
El-Haddad, K. M., Mohammed, S. Z., Ali, A. H. A. M., Abdel-Rahman, M. S., & Temraz, T. A. (2022). Herbivorous Reef Fishes of South Sinai Marine Protected Areas (Gulf of Aqaba, Egypt): Influence of Fisheries Management and Protection Status. Egyptian Journal of Aquatic Biology and Fisheries, 26(5), 681–705. DOI: https://doi.org/10.21608/ejabf.2022.264541
English, S., Wilkinson, C., & Baker, V. (1994). Survey Manual for Tropical Marine Resources. Australian Institute of Marine Science.
English, S., Wilkinson, C., & Baker, V. (1997). Survey Manual of Tropical Marine Resources. 2nd Edition, Australian Institute Resources.
Eviota, M. P., Cuadrado, J. T., & Adlaon, M. S. (2021). Species composition of coral reef fish in the nonoc island, philippines. AACL Bioflux, 14(5), 2820–2825.
Fahreza, A. D., Purnomo, P. W., & Hendrarto, B. (2013). Kelimpahan Serta Predasi Acanthaster planci di Perairan Tanjung Kelayang Kabupaten Belitung. Management of Aquatic Resources Journal, 2(3), 212–218. DOI: https://doi.org/10.14710/marj.v2i3.4217
Farghal, T. K., Zaid, M. M. A., & Fouda, M. M. (2021). Abundance, diversity and distribution of coral reef fish families in the Egyptian Red Sea, at Hurghada, Egypt. Egyptian Journal of Aquatic Biology and Fisheries, 25(1), 541–554. DOI: https://doi.org/10.21608/EJABF.2021.147328
Farhana-Azmi, N., Manjaji-Matsumoto, B. M., Maidin, N., John, J., Bavoh, E., & Saleh, E. (2022). Checklist of coral reef fishes of Darvel Bay, Sabah, Malaysian Coral Triangle, with a note on the biodiversity and community structure. Biodiversity Data Journal, 10. DOI: https://doi.org/10.3897/BDJ.10.e79201
Faricha, A., Edrus, I. N., Utama, R. S., Dzumalex, A. R., Salatalohi, A., & Prayuda, B. (2020). Hubungan Antara Komposisi Ikan Target dan Presentase Tutupan Karang Hidup di Kepulauan Kei Kecil, Maluku. Jurnal Penelitian Perikanan Indonesia, 26(3), 147–157. DOI: https://doi.org/10.15578/jppi.26.3.2020.147-157
Flynn, R. L., & Forrester, G. E. (2019). Boat anchoring contributes substantially to coral reef degradation in the British Virgin Islands. PeerJ, 7, e7010. DOI: https://doi.org/10.7717/peerj.7010
Giglio, V. J., Ternes, M. L. F., Mendes, T. C., Cordeiro, C. A. M. M., & Ferreira, C. E. L. (2017). Anchoring damages to benthic organisms in a subtropical scuba dive hotspot. Journal of Coastal Conservation, 21(2), 311–316. DOI: https://doi.org/10.1007/s11852-017-0507-7
Gomez, E. D., Aliño, P. M., Yap, H. T., & Licuanan, W. Y. (1994). A review of the status of Philippine reefs. Marine Pollution Bulletin, 29(1–3), 62–68. DOI: https://doi.org/10.1016/0025-326X(94)90427-8
Gomez, E. D., & Yap, H. T. (1998). Monitoring Reef Condition. In Coral Reef Management Hand Book. UNESCO, Regional Office for Science and Technology for South East Asia.
Hadi, T. A., Giyanto, G., Prayudha, B., Hafizt, M., Budiyanto, A., & Suharsono, S. (2018). Status Terumbu Karang Indonesia 2018. Pusat Penelitian Oseanografi – Lembaga Ilmu Pengetahuan Indonesia.
Hamuna, B., Dimara, L., & Alianto, A. (2022). Reef Fish Diversity in Jayapura City, Indonesia: A Preliminary Study. Journal of Tropical Biodiversity and Biotechnology, 7(3), 73094. DOI: https://doi.org/10.22146/jtbb.73094
Hamuna, B., Kalor, J. D., & Rachmadani, A. I. (2019). Assessing the Condition of Coral Reefs and the Indicator Fish (Family: Chaetodontidae) in Coastal Waters of Jayapura City, Papua Province, Indonesia. European Journal of Ecology, 5(2), 126–132. DOI: https://doi.org/10.2478/eje-2019-0020
Harahap, Z. A., Gea, Y. H., & Susetya, I. E. (2019). Relationship between coral reef ecosystem and coral fish communities in Unggeh Island Central Tapanuli Regency. IOP Conference Series: Earth and Environmental Science, 260, 012113. DOI: https://doi.org/10.1088/1755-1315/260/1/012113
Hastuty, R., Yonvitner, Y., & Adrianto, L. (2014). Tutupan karang dan komposisi ikan karang didalam dan luar kawasan konservasi pesisir timur Pulau Weh, Sabang. Depik, 3(2), 99–107. DOI: https://doi.org/10.13170/depik.3.2.1468
Heemstra, P. ., & Randall, J. . (1993). FAO Species Catalogue. Vol. 16. Groupers of the world (family Serranidae, subfamily Epinephelinae). An annotated and illustrated catalogue of the grouper, rockcod, hind, coral grouper and lyretail species known to date. Food and Agriculture Organization of the United Nations.
Hoegh-Guldberg, O., Pendleton, L., & Kaup, A. (2019). People and the changing nature of coral reefs. Regional Studies in Marine Science, 30, 100699. DOI: https://doi.org/10.1016/j.rsma.2019.100699
Iskandar, R., Soemarno, S., Kusuma, Z., & Wiadnya, D. G. R. (2021). Association between Coral Community Coverage with Coral Reef Fish Communities at Samber Gelap Island, South Kalimantan, Indonesia. Egyptian Journal of Aquatic Biology and Fisheries, 25(3), 861–881. DOI: https://doi.org/10.21608/ejabf.2021.182968
Kamya, P. Z., Dworjanyn, S. A., Hardy, N., Mos, B., Uthicke, S., & Byrne, M. (2014). Larvae of the coral eating crown-of-thorns starfish, Acanthaster planci in a warmer-high CO2 ocean Global Change Biology, 20(11), 3365–3376. DOI: https://doi.org/10.1111/gcb.12530
Kayal, M., Lenihan, H. S., Pau, C., Penin, L., & Adjeroud, M. (2011). Associational refuges among corals mediate impacts of a crown-of-thorns starfish Acanthaster planci outbreak. Coral Reefs, 30(3), 827–837. DOI: https://doi.org/10.1007/s00338-011-0763-1
Kayal, M., Vercelloni, J., Lison de Loma, T., Bosserelle, P., Chancerelle, Y., Geoffroy, S., Stievenart, C., Michonneau, F., Penin, L., Planes, S., & Adjeroud, M. (2012). Predator Crown-of-Thorns Starfish (Acanthaster planci) Outbreak, Mass Mortality of Corals, and Cascading Effects on Reef Fish and Benthic Communities. PLoS ONE, 7(10), e47363. DOI: https://doi.org/10.1371/journal.pone.0047363
Kementerian Kelautan dan Perikanan. (2018). Potensi Usaha dan Peluang Investasi Kelautan dan Perikanan Povinsi Sulawesi Tengah.
Kroon, F. J., Barneche, D. R., & Emslie, M. J. (2021). Fish predators control outbreaks of Crown-of-Thorns Starfish. Nature Communications, 12, 6986. DOI: https://doi.org/10.1038/s41467-021-26786-8
Kuiter, R. H. (1992). Tropical reef-fishes of the western Pacific Indonesia and adjacent waters. Gramedia Pustaka Utama.
Lelloltery, H., Pudyatmoko, S., Fandelli, C., & Baiquni, M. (2018). Study of coral reef for marine ecotourism development based on region suitability and carrying capacity in Marsegu Island Nature Tourism Park, Maluku, Indonesia. Biodiversitas Journal of Biological Diversity, 19(3), 1089–1096. DOI: https://doi.org/10.13057/biodiv/d190342
Lieske, E., & Myers, R. (1994). Coral Reef Fishes. Collins Pocket Guide Haper Collins Publishers.
Limmon, G. V, & Marasabessy, A. M. (2019). Impacts of sedimentation on coral reefs in Inner Ambon Bay, Indonesia. IOP Conference Series: Earth and Environmental Science, 339(1), 012035. DOI: https://doi.org/10.1088/1755-1315/339/1/012035
Ludwig, J. A., & Reynolds, J. F. (1988). Statistical Ecology: A Primer on Methods and Computing. Wiley-Interscience Pub.
Maaty, M. M., Azab, A. M., & Desouky, M. G. (2021). Distribution, abundance and diversity of reef fishes in waters of some cities along the northern Egyptian Red Sea coast, Egypt. Egyptian Journal of Aquatic Biology & Fisheries, 25(5), 901–918. www.ajas.uoanbar.edu.iq
Madduppa, H. H., Farhan, A. R., & Suhendra, D. (2012). Fish biodiversity in coral reefs and lagoon at the Maratua Island, East Kalimantan. Biodiversitas Journal of Biological Diversity, 13(3), 145–150. DOI: https://doi.org/10.13057/biodiv/d130308
Madduppa, H. H., Koropitan, A. F., Damar, A., Subhan, B., Taufik, M., Minsaris, L. O. A., Taurusman, A. A., Ramli, A., & Purwanto, A. B. (2020). Ecological Vulnerability of Coral Reef Ecosystem in Wakatobi National Park During Indian Ocean Dipole Event. HAYATI Journal of Biosciences, 27(1), 57–70. DOI: https://doi.org/10.4308/hjb.27.1.57
Magurran, A. E. (1998). Ecological Diversity and Its Measurement. Princeton University Press.
Mansyur, K., Rizal, A., Tis’in, M., Saleh Nurdin, M., & Susanti, N. (2019). Pertumbuhan dan Sintasan Karang Hasil Transplantasi di Lapangan Minyak Tiaka, Teluk Tolo, Sulawesi Tengah. Prosiding Simposium Nasional Kelautan Dan Perikanan VI, 167–176.
Matsuda, H., Amaoka, K., Araga, C., Uyeno, T., & Yoshino, T. (1984). The Fishes of the Japanese Archipelago. Tokai University Press.
Morais, R. A., & Bellwood, D. R. (2020). Principles for estimating fish productivity on coral reefs. Coral Reefs, 39(5), 1221–1231. DOI: https://doi.org/10.1007/s00338-020-01969-9
Morais, R.A., Connolly, S. R., & Bellwood, D. R. (2020). Human exploitation shapes productivity– biomass relationships on coral reefs. Global Change Biology, 26(3), 1295–1305. DOI: https://doi.org/10.1111/gcb.14941
Moran, P. J. (1990). Acanthaster planci (L.): biographical data. Coral Reefs, 9(3), 95–96. DOI: https://doi.org/10.1007/BF00258218
Odum, E. P. (1971). Fundamentals of Ecology (Third Edit). W.B. Saunders Co.
Pelasula, D. D., Alik, R., Ruli, F., Hukom, F. D., La Pay, & Hehuat, J. (2021). A coral reef health study and its problem in Leti, Moa and Wetar Island, Mollucas Province. IOP Conference Series: Earth and Environmental Science, 777(1), 012003. DOI: https://doi.org/10.1088/1755-1315/777/1/012003
Plass-Johnson, J. G., Schwieder, H., Heiden, J., Weiand, L., Wild, C., Jompa, J., Ferse, S. C. A., & Teichberg, M. (2015). A recent outbreak of crown-of-thorns starfish (Acanthaster planci) in the Spermonde Archipelago, Indonesia. Regional Environmental Change, 15(6), 1157–1162. DOI: https://doi.org/10.1007/s10113-015-0821-2
Prihadi, D. J., Harahap, S. A., Parasibu, B., Pamungkas, W., & Simbolon, F. Y. (2025). Exploring Coral Reef Distribution and Health at Post 1, West Bali National Park. Egyptian Journal of Aquatic Biology and Fisheries, 29(3), 1–9. DOI: https://doi.org/10.21608/ejabf.2025.425696
Purnomo, T. (2020). Biodiversity and Existing Condition of Coral Reef Ecosystem in Kondang Merak Beach Malang. Advances in Computer Science Research, 95, 28–33. DOI: https://doi.org/10.2991/miseic-19.2019.7
Putra, R. D., Abrar, M., Siringoringo, R. M., Purnamsari, N. W., Agustina, P., & Islam, M. J. (2022). Marine Biodiversity of Coral Reef Fishes in Pieh Marine Recreational Park After Bleaching and Acanthaster Outbreaks. Jurnal Ilmiah Perikanan dan Kelautan, 14(1), 48– 70. DOI: https://doi.org/10.20473/jipk.v14i1.30133
Putra, S. A. (2022). The essentiality of coral reef ecosystems in urban areas. Jurnal Oase Nusantara, 1(2), 105. Retrieved from https://ejurnal.kptk.or.id/oase/article/view/17
Rizal, A., Siagian, H., & Farahdita, W. (2021). Sebaran dan Kondisi Terumbu Karang di Kepulauan Kangean. Jurnal Kelautan Nasional, 16(3), 235–246. DOI: https://doi.org/10.15578/jkn. v16i3.9890
Samoilys, M., Alvarez-Filip, L., Myers, R., & Chabanet, P. (2022). Diversity of Coral Reef Fishes in the Western Indian Ocean: Implications for Conservation. Diversity, 14(2), 102. DOI: https://doi.org/10.3390/d14020102
Sektiana, S. P., Abdillah, A. A., Alam, M. J., Isroni, W., Dewi, N. N., Kim, H. W., & Andriyono, S. (2022). Diversity of the Tabuhan Island coral reef fish revealed by DNA barcoding and implication on conservation strategy in Banyuwangi, Indonesia. Biodiversitas Journal of Biological Diversity, 23(9), 4844–4851. DOI: https://doi.org/10.13057/biodiv/d230953
Shaadikin, R., Hasan, R., & Ridwan, M. (2025). An Analysis of the Sustainability of the Coral Reef Ecosystem in the Marine Protected Areas Of Waetuno and Kabita Villages, Wakatobi Regency. BHARASUMBA : Jurnal Multidisipliner, 4(3), 225–244. DOI: https://doi.org/https://doi.org/10.62668/bharasumba.v4i03.1625
Sukandar, Samuel, P. D., Dewi, C. S. U., Pratiwi, I. D., Anam, M. C., Beno, J. E., & Fatmawati, R. (2022). Current status of the coral reef ecosystem in Gresik Regency, East Java. AACL Bioflux, 15(4), 1692–1702. http://www.bioflux.com.ro/aacl
Syakir, M., Mansyur, K., Yusuf, S., Syam, D., & Aini, N. (2015). Pembelajaran Pengelolaan Terumbu Karang di Sekitar Lokasi Pengeboran Minyak dan Gas Lapangan Tiaka, Tomori Sulawesi Tengah. Torani (Jurnal Ilmu Kelautan dan Perikanan), 25(2), 88–95. ISSN: 0853- 4489
Tis’in, M., & Mansyur, K. (2016). Studi Pendahuluan Kondisi Terumbu Karang Yang Memiliki Jarak Lokasi Berbeda Dari “Flare Produksi” Lapangan Minyak Tiaka. Jurnal Agrisains, 17(2), 78–84.
Tony, F., Soemarno, S., Wiadnya, D. G. K., & Hakim, L. (2021). Habitat biodiversity as a determinant of fish community structure on coral reefs in Halang Melingkau Island, Kotabaru, South Kalimantan, Indonesia. Egyptian Journal of Aquatic Biology and Fisheries, 25(1), 351–370. DOI: https://doi.org/10.21608/EJABF.2021.149758
Tony, F., Soemarno, S., Wiadnya, D. G. R., & Hakim, L. (2020). Diversity of reef fish in Halang Melingkau Island, South Kalimantan, Indonesia. Biodiversitas Journal of Biological Diversity, 21(10), 4804–4812. DOI: https://doi.org/10.13057/biodiv/d211046
Wulandari, P., Sainal, S., Cholifatullah, F., Janwar, Z., Nasruddin, N., Setia, T. M., Soedharma, D., Praptiwi, R. A., & Sugardjito, J. (2022). The health status of coral reef ecosystem in Taka Bonerate, Kepulauan Selayar Biosphere Reserve, Indonesia. Biodiversitas Journal of Biological Diversity, 23(2), 721–732. DOI: https://doi.org/10.13057/biodiv/d230217
Yuliana, E., Winata, A., Adimu, H. E., Hewindati, Y. T., & Djatmiko, W. A. (2022). Reef Fish in the Mudflats of Kaledupa Island in Wakatobi National Park, Indonesia. HAYATI Journal of Biosciences, 29(2), 245–254. DOI: https://doi.org/10.4308/hjb.29.2.245-254
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