Journal
CHEMISTRY AND ECOLOGY
Volume 24, Issue -, Pages 67-72Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02757540801966454
Keywords
coral reefs; benthic categories; phase shift; Maldives
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Episodes of coral bleaching and mortality have occurred with increasing frequency over the past two decades, often followed by proliferation of non-constructional organisms leading to a 'phase shift' in reef ecosystems. As the Maldives were severely affected by the 1998 episode, concern raised about the possibility of a phase shift there. The status of Maldivian reefs was surveyed eight years after the mass mortality of 1998; the percentages of biotic and abiotic benthic categories were estimated in both lagoon and ocean reefs. Hard coral cover did not exceed 37%, but no threat was recognized of a phase shift toward the dominance of soft corals, algae or sponges (7% on average). The high percentage of bare coral rock (up to almost 50%) and the local variability of living benthic cover suggest that Maldivian reefs were still in a re-colonization phase. Monitoring of their evolution is in progress.
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