Coral reefs are dying, we can only prevent it if we act now

Yıl 2012, Cilt: 18 Sayı: 1, 1 - 10, 01.04.2012

Makoto Omori

Öz

Abstract This paper begins with a brief overview of the status of coral reefs of Japan and around the world, followed by a review concerning present research on coral reef rehabilitation at Akajima Marine Science Laboratory in Okinawa, Japan. With respect to the latter, effort has been aimed at developing techniques for the mass culture of Acropora spp. from eggs. Colonies of Acropora tenuis that were reared from eggs and transplanted to the seabed at Akajima began spawning by approximately 20-25 cm in diameter at 4 or 5 years of age. Many fish and crustaceans have inhabited the newly transplanted coral colonies. This demonstrated the possibilities of culturing using sexual propagation as a technique to assist local coral reef rehabilitation and hence, conservation of marine biodiversity. It is humbling and somewhat depressing to compare the small scale of success relative to the wide range of degradation. However, the present method of coral reef rehabilitation has shown enough promise for us to continue with this effort.

Anahtar Kelimeler

Key words: Coral reef, rehabilitation, zooxanthella, Okinawa, spawning, cultivation

Kaynakça

• Cesar, H., Burke, L., Pet-Soede, L. (2003) The Economics of Worldwide Coral Reef Degradation. Cecar Environmental Consulting. Arnhem, Netherlands. 23pp. Edwards, A.J., Gomez, E.D. (2007) Reef Restoration Concepts & Guidelines making sensible management choices in the face of uncertainty. Coral Reef Targeted Research & Capacity Building for the Management Programme. St. Lucia, Australia. iv+38pp.
• Omori, M. (2005) Success of mass culture of Acropora corals from egg to colony in open water. Coral Reefs 24: 563.
• Omori, M. (2008) Coral reefs at risk: the role of Japanese science and technology for restoration. In: Advances in Coral Husbandry in Public Aquariums. (eds., R.J. Leewis, M. Janse) Public Aquarium Husbandry Series 2. pp.401-406.
• Omori, M., Iwao, K. (2009) A novel substrate (the “coral peg”) for deploying sexually propagated corals for reef restoration. Galaxea, Journal of Coral Reef Studies 11: 39.
• Permata, W.D., Hidaka, M. (2005) Ontogenetic changes in the capacity of the coral Pocillopora damicornis to originate branches. Zoological Science 22: 1197-1203.
• Veron, J.E.N. (1992) Conservation of biodiversity: a critical time for the hermatypic corals of Japan. Coral Reefs 11:13-21.
• Williamson, C. (2008) Status of Coral Reefs of the World: 2008. Australian Institute of Marine Science. Townsville, Australia. 296pp.