Geomorfologi Terumbu Karang dan Habitat Bentik Gugusan Pulau Biawak, Indramayu: Integrasi Studi Citra Satelit dan Sedimen Permukaan

Tubagus Solihuddin, Dwi Amanda Utami, August Daulat, Agustin Rustam

Abstract

Terletak di kawasan perairan Laut Jawa, Gugusan Pulau Biawak saat ini diprioritaskan untuk wilayah konservasi keanekaragaman hayati laut. Deskripsi tentang zona geomorfologi dan habitat bentik terumbu karang serta distribusi sedimen permukaan adalah salah satu informasi penting untuk mendukung kebijakan konservasi, walaupun hal tersebut sering luput dari perhatian para peneliti dan pengambil kebijakan. Studi ini memberikan gambaran geomorfologi terumbu karang dan habitat bentik terkait serta karakteristik sedimen permukaan dari tiga pulau di gugusan Pulau Biawak, Indramayu beserta faktor pengendali dan sifat khususnya melalui studi integrasi citra satelit dan analisis sedimen permukaan. Zona rataan terumbu menunjukkan dominasi endapan pasir dan fragmen koral serta kalkareus alga kecuali di Pulau Biawak banyak ditumbuhi Halimeda. Koloni terumbu karang tumbuh sumbur di zona lereng terumbu pada sisi bagian barat pulau pada kedalaman hingga 5 m. Tekstur sedimen menunjukkan dominasi pasir kasar tanpa pola gradasi seiring dengan perubahan geomorfologi dan habitat bentik. Komposisi sedimen didominasi oleh komponen bioklastik, yang terdiri atas koral dan moluska sebagai dua komponen tertinggi.

Keywords

geomorfologi, bentik habitat, sedimen permukaan, konservasi, Pulau Biawak

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References

Asriningrum, W. (2011). Reef morphology identification in Sikka, NTT using Landsat imagery. Journal of Indonesian Coral Reefs 1, 48–54.

Blott, S. J. and Pye, K. (2001). GRADISTAT: a grain size distribution and statistics package for the analysis of unconsolidated sediments. Earth surface processes and Landforms, 26 (11), 1237-1248.

Diaz, R. J., Solan, M., Valente, R. M. (2004). A review of approaches for classifying benthic habitats and evaluating habitat quality. Journal of Environmental Management 73, 165e181.

Folk, R. L. (1954) The distinction between grain size and mineral composition in sedimentary-rock nomenclature. Journal of Geology, 62, 344-359.

Freeman, S. M., Rogers, S. I. (2003). A new analytical approach to the characterisation of macro-epibenthic habitats: linking species to the environment. Estuarine, Coastal and Shelf Science 56, 749e764.

Gordon A. L., Sprintall J., van Aken H. M., Susanto D., Vijffels S., Molcard R., Ffield A., Pranowo W., Wirasantosa S., 2010. The Indonesian throughflow during 2004-2006 as observed by the INSTANT program. Dynamics of Atmospheres and Oceans 50: 115–128.

Harris, P. M., Vlaswinkel, B. (2008). Modern isolated carbonate platforms: templates for quantifying facies attributes of hydrocarbon reservoirs. In: Lukasik, J., Simo, T. (Eds.), Controls on Carbonate Platform and Reef Development. SEPM Special Publication, 89, pp. 323–341.

Jordan, C. F., Wharton, R. J., Cook, R. E. (1993). The sedimentology of Gugusan Pulau Seribu: A modern patch reef complex in the west Java Sea, Indonesia. In: Modern Carbonates and their Ancient Counterparts in Indonesia: A Guide to Interpreting and Understanding Carbonate Reservoirs. Indonesian Petroleum Association, Carbonate Seminar 9 May 1993, Jakarta, pp. 2.1-2.6.

Kaczmarek, S. E., Hicks, M. K., Fullmer, S. M., Steffen, K. L., Bachtel, S. L. (2010). Mapping facies distributions on modern carbonate platforms through integration of multispectral Landsat data, statistics-based unsupervised classifications, and surface sediment data. American Association of Petroleum Geologists Bulletin 94, 1581–1606.

Madden, R. H. C., Wilson, M. E. J., O'Shea, M. (2013). Modern fringing reef carbonates from equatorial SE Asia: An integrated environmental, sediment and satellite characterisation study, Marine Geology 344: 163–185.

Mazzullo, J., Graham, A. G., Braunstein, C. (1988). Handbook for Shipboard Sedimentologists. Ocean Drilling Program Technical Note No. 8.

Ongkosongo, O. S. R. (1989). Background information for the field trip to the Seribu Reefs, Indonesia. Short Course on Carbonate Sedimentology and Stratigraphy, 4-8 September 1989, Jakarta. Indonesian Petroleum Association.

Purba N.P. dan Harahap S.A. (2013). Pulau-pulau Kecil Indonesia Persfektif Kelautan. Edisi Biawak-Gosong-Candikian. Unpad press, 46 hal.

Ray R. D., Egbert G. D. & Erofeeva S. Y., 2005. A brief overview of tides in the Indonesian Seas. Oceanography 18(4): 74-79.

Spalding, M. D. and Grenfell, A. M. (1997). New estimates of global and regional coral reef areas. Coral Reefs 16, 225-230.

Solihuddin T., Utami A. D., Salim L. H., Prihantono J. (2019). Sedimentary Environment of A Modern Carbonate Platform of Karimunjawa Islands, Central Java. Indonesian Journal on Geoscience, 6 (1): 57-72.

Solihuddin, T., 2014. A Drowning Sunda Shelf Model during Last Glacial Maximum (LGM) and Holocene: A Review. Indonesian Journal on Geoscience, Vol 1 (2): 99-107.

Sunarto, Riyantini I., Ihsan A.Y.N., Harahap S. A. (2013). Kajian Sumberdaya Kelautan Pulau Biawak dan Laut sekitarnya Kabupaten Indramayu Jawa Barat. Laporan Akhir Penelitian Unggulan Perguruan Tinggi (tidak dipublikasikan). FPIK Universitas Padjadjaran.

Tomascik, T., Mah, A. J., Nontji, A., and Moosa, M. K. (1997). The ecology of Indonesian seas. Part 2, Periplus Editions.

Utami, D.A., Reuning, L. and Cahyarini, S.Y. (2018). Satellite and Field Based Facies Mapping of Isolated Carbonate Platforms from the Kepulauan Seribu Complex, Indonesia. The Depositional Record 00:1-19. https://doi.org/10.1002/dep2.47

Vecsei, A., (2004). A new estimate of global reefal carbonate production including the forereefs. Global and Planetary Change 43, 1-18.

Wilson, M. E. J. (2002). Cenozoic carbonates in SE Asia: implications for equatorial carbonate development. Sedimentary Geology 147, 295–428.

Wilson, M. E. J. (2012). Equatorial carbonates: an earth systems approach. Sedimentology 59, 1–31.

DOI: http://dx.doi.org/10.15578/segara.v16i3.8523