Abstract

The status of Indonesian coral reefs are in fair to poor categories, therefore it requires more approaches in order to recover the natural ecosystem. One of the reef restoration method is coral transplantation. Genus Acropora is one of the main constituent of reefs in the Indo-Pacific waters. Reef transplantation may not only rehabilitate the damaged reef, but also an effective way to collect coral for economic purposes. Acropora secale has high economic value as aquarium ornament, however it is vulnerable to the environmental stress and marine pollution. Therefore, finding the suitable transplantation location is one of important part in the transplantation. The objective of this research is to investigate the growth of transplant A. Secale at Serangan and Geger Beach which has different morphology feature. A. secale was Transplanted for 3 months on the 2 x 1 m table with 16 fragments and observed each week. The results obtained are total growth and growth rate of A. secale transplanted on Serangan Beach is significant higher than Geger Beach (P<0.05). The total growth of A. secale on Serangan Beach is higher by 0,83 cm, wider by 0,61 cm, and branches are more 7 branches than Geger Beach. The growth rate of A. secale at Serangan Beach was higher by 0,27 cm/month and wider by 0,21 cm/month than Geger Beach. The survival rate of A. secale on Serangan Beach and Geger Beach is 100% which means that all transplanted corals survive until the end of the study.

Highlights

  • Abstrak Status terumbu karang di Indonesia didominasi oleh terumbu karang kondisi cukup hingga kurang baik, sehingga diperlukan upaya untuk memperbaiki ekosistem alami

  • it is vulnerable to the environmental stress

  • The objective of this research is to investigate the growth of transplant A. Secale at Serangan

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Summary

Pendahuluan

Degradasi ekosistem terumbu karang yang terjadi secara global akibat perubahan iklim, eutrofikasi, penangkapan berlebih dan pencemaran telah menjadi perhatian dunia (Hughes and Connell, 1999). Hal ini disebabkan oleh penangkapan ikan dengan menggunakan kalium sianida (KCN) atau peledak, kegiatan wisata bawah air yang tidak ramah lingkungan, serta aktifitas tangkap lebih (overfishing) terhadap ikan pemakan alga (Vatria, 2010; Pontoh, 2011; Manullang et al, 2014). Pengambilan terumbu secara ilegal untuk dijadikan pondasi rumah, ornamen akuarium dan pembuatan jalan juga berkontribusi terhadap kerusakan ekosistem ini (Santoso, 2010; Sembiring et al, 2012). Diperlukan upaya untuk merehabilitasi degradasi tersebut dan mencegah pengambilan terumbu di alam, salah satunya adalah metode transplantasi. Hal ini dapat menjadi salah satu faktor yang mempengaruhi pertumbuhan karang di kedua pantai. Budidaya karang jenis ini dengan cara transplantasi dapat mengurangi dan merehabilitasi kerusakan terumbu serta menambah pendapatan ekonomi nelayan pembudidaya

Waktu dan Tempat
Pemotongan Karang Induk dan Penempatan Meja Transplantasi
Kondisi Lingkungan
Simpulan
Full Text
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