Yossi Loya – författare
Mesophotic Coral Ecosystems
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This book summarizes what is known about mesophotic coral ecosystems (MCEs) geographically and by major taxa. MCEs are characterized by light-dependent corals and associated communities typically found at depths ranging from 30-40 m. and extending to over 150 m. in tropical and subtropical ecosystems. They are populated with organisms typically associated with shallow coral reefs, such as macroalgae, corals, sponges, and fishes, as well as specialist species unique to mesophotic depths. During the past decade, there has been an increasing scientific and management interest in MCEs expressed by the exponential increase in the number of publications studying this unique environment. Despite their close proximity to well-studied shallow reefs, and the growing evidence of their importance, our scientific knowledge of MCEs is still in its early stages. The topics covered in the book include: regional variation in MCEs; similarities and differences between mesophotic and shallow reeftaxa, biotic and abiotic conditions, biodiversity, ecology, geomorphology, and geology; potential connectivity between MCEs and shallow reefs; MCE disturbances, conservation, and management challenges; and new technologies, key research questions/knowledge gaps, priorities, and future directions in MCE research.
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Coral reefs are the most spectacular and diverse ecosystems in the marine environment. Over the last decades, however, dramatic declines of coral reef communities have been observed. Corals are endangered due to natural and anthropogenic detrimental factors, such as global warming and environmental pollution.
Based on an international meeting on "Coral Health and Disease" in Eilat, Israel in April 2003, the book starts with case studies of reefs, e.g. the Red Sea, Caribbean, Japan, Indian Ocean and the Great Barrier Reef. The second part on microbial ecology and physiology describes the symbiotic relations of corals and microbes, and the microbial role in nutrition or bleaching resistance of corals. Particular coral diseases such as aspergillosis, white pox, black and white band diseases are treated in the third part. Finally, various hypotheses of the mechanisms of coral bleaching, including a projection of the future of coral reefs, are discussed.