Pertumbuhan Kerangka Karang Acropora Di Perairan Sengigi Lombok

Abstract

Abstrak:Penelitian ini bertujuan 1) Mengetahui laju petumbuhan kerangka karang Acropora (Acropora nobilis dan Acropora nosuta) 2) mengidentifikasi kondisi perairan Senggigi. Pengukuran pertumbuhan karang dilakukan selama empat bulan dengan metode Alizarin red meliputi pertumbuhan panjang dan pertambahan bobot. Untuk mengetahui perbedaan pertumbuhan pada kedua jenis karang, dilakukan uji t sedangkan kondisi perairan dilakukan uji laboratorium dan dibahas secara diskriptif. Hasil penelitian menunjukan bahwa pertumbuhan panjang kerangka Acropora nobilis mencapai 17.79 mm atau 0.148 mm/hari dan Acropora nosuta mencapai 14.28 mm atau 0.12 mm/hari. Sedangkan pertambahan bobot kerangka Acropora nobilis mencapai 513.1 mg atau 4.27 mg /hari dan Acropora nosuta mencapai 264.9 mg atau 2.21 mg /hari. Uji statistik menunjukan bahwa ada perbedaan laju pertumbuhan antara kerangka karang Acropora nobilis dan Acropora nosuta. Kondisi fisika kimia perairan Sengigi selama penelitian rata-rata sangat baik karena masih pada kisaran batas toleransi untuk persyaratan pertumbuhan karang pada umumnya Kata kunci : Pertumbuhan; Kerangka karang; Acropora sp Abstract: Aims of this research are to know the growth of Acropora (Acropora nobilis and Acropora nosuta) and identify waters condition of Senggigi. Measurement of the growth of length and weight increasing were carried out for four months by Alizarin methods (red). T test was applied to know difference of the growth on two sorts of the coral, whereas waters was examined in laboratory and presented by description. Results of this research points out that length of growth of Acropora nobilis is 18.89 mm/four months or 0.15 mm/day, meanwhile Acropora nosuta reaches 15.32 mm/ four months or 0.127 mm/day. Rising of weight of Acropora nobilis is 541.2 mg/ four months or 4.8 mg/day, whereas Acropora nosuta reaches 323.5 mg/ four months or 3.1 mg/day. Statistics test shows there is a difference in the growth of length between Acropora nobilis and Acropora nosuta. During this research, physical and chemical condition of Senggigi waters was generally very good, the conditions of environment were in range of toleration for growing coral. Keywords : Growth; Coral skeleton; Acropora sp

The success of coral Acropora sp. transplantation with various methods in Raja Ampat Regency, Indonesia

“…The results obtained in this study were slightly higher than those of Muhlis [13], which showed the skeletal growth rate of Acropora sp in Senggigi waters, Lombok to be 0,148 mm/day. Other research results by Hairunizar et al [14] stated that the growth rate of corals of Acropora sp at a depth of 4 meters was 1.89 mm/week.…”

Hard Coral (Scleractinia) Recruitment Based on the Geomorphology Zone in Bintan Island Waters, Riau Islands

“…Selain itu proses rekrutmen karang pada suatu perairan sangat dipengaruhi oleh masuknya larva karang yang akan menempel pada substrat yang tepat sehingga menjadi individu karang muda (juvenil) (Abrar, 2015). Menurut Muhlis (2019), pertumbuhan dan persebaran karang dibatasi oleh berbagai macam faktor seperti: suhu, kekeruhan, cahaya, salinitas, kecepatan arus, dan jenis substrat. Menghadapi perubahan kondisi lingkungan perairan tersebut, secara alami terumbu karang akan bertahan (resistancy), beradaptasi (adaptability) atau memulihkan diri kembali (recovery) setelah mengalami kerusakan sampai terbentuknya komunitas yang stabil (resilient) (Obura & Grimsditch, 2009).…”

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