Status of Coral Reefs of the World 2000
Status of Coral Reefs of the World 2000.pdf
Status of Coral Reefs of the World 2000.pdf
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Regional <strong>Status</strong> <strong>of</strong> <strong>Coral</strong> <strong>Reefs</strong> in <strong>the</strong> Red Sea and <strong>the</strong> Gulf <strong>of</strong> Aden<br />
Plages (Gulf <strong>of</strong> Tadjourah). At 26 sites coral cover was greater than 50%, and during swims<br />
along <strong>the</strong> reef edge, <strong>the</strong> percentage <strong>of</strong> living coral ranged from 5-70%, and exceeded 20%<br />
in all but 3 places.<br />
Egypt<br />
The reefs in sou<strong>the</strong>rn Egypt are more diverse than those in <strong>the</strong> north, with nearly double <strong>the</strong><br />
number <strong>of</strong> coral species. The distribution and development <strong>of</strong> reef-building corals is<br />
restricted in <strong>the</strong> Gulf <strong>of</strong> Suez by several factors, including temperature, sediment load,<br />
salinity and light penetration. During 1997 to 1999 three different, but coordinated,<br />
projects conducted surveys from approximately 130 reef sites between 1997 and 1999<br />
from Hurghada to Shakateen (and more detailed studies to assess diving impacts at 11 sites<br />
near Hurghada). These have been summarised by respectively in reports by <strong>the</strong>: Egyptian<br />
Red Sea Coastal and Marine Resources Management Project; <strong>the</strong> Ecological Sustainable<br />
Tourism Project and <strong>the</strong> <strong>Coral</strong> Reef Biodiversity Project. Rapid Environmental Asssessments<br />
(REAs) have been made at 48 frequently visited dive sites as part <strong>of</strong> <strong>the</strong> Environmentally<br />
Sustainable Tourism Project. Collectively <strong>the</strong> results from <strong>the</strong> above surveys indicate <strong>the</strong>re<br />
was 55% coral cover in non-sheltered areas, and 85% in sheltered areas. Live coral cover<br />
generally ranged from 11 to 35% on <strong>the</strong> reef flats, with <strong>the</strong> highest cover on reef walls (12-85%)<br />
and reef slopes (5-62%). Live coral cover was highly variable along <strong>the</strong> coast, with <strong>the</strong><br />
highest being on reef walls and <strong>the</strong> leading edges <strong>of</strong> <strong>the</strong> reefs. A decline <strong>of</strong> 20-30% in coral<br />
cover has been recorded at most sites, and this corresponds with increases in <strong>the</strong> cover <strong>of</strong><br />
recently dead coral, and crown-<strong>of</strong>-thorns starfish (COTS) outbreaks.<br />
Jordan<br />
Current research is focused on coral communities near <strong>the</strong> fertiliser industries but extends<br />
along <strong>the</strong> entire coastline to monitor biological and physical characteristics including<br />
currents, temperature, and nutrient levels. The Gulf <strong>of</strong> Aqaba is among <strong>the</strong> most diverse<br />
high latitude reefs in <strong>the</strong> world, with 158 species in 51 genera. The more tolerant and<br />
opportunistic Stylophora pistillata now dominates and replaces o<strong>the</strong>r corals, modifying <strong>the</strong><br />
structure <strong>of</strong> <strong>the</strong> reefs. Recent surveys at 15 sites indicated <strong>the</strong> reefs were in good condition<br />
with over 90% hard coral cover, although it is unknown what proportion <strong>of</strong> this was alive.<br />
Saudi Arabia<br />
<strong>Coral</strong> reef habitats were assessed between 1997 and 1999 in <strong>the</strong> central-nor<strong>the</strong>rn Red<br />
Sea, from to Haql in <strong>the</strong> Gulf <strong>of</strong> Aqaba, to Jeddah to produce detailed inventories for<br />
corals, fish, o<strong>the</strong>r benthos, algae, seagrasses, marine mammals, turtles, coastal vegetation<br />
and birds. These were combined with socioeconomic assessments <strong>of</strong> human use and<br />
detailed aerial photos and satellite image mapping to define key reef areas for<br />
conservation within MPAs. In <strong>the</strong> Farasan Islands Marine Protected Area (FIMPA), live<br />
coral, dead coral, and <strong>the</strong> coral predators (crown-<strong>of</strong>-thorns starfish and Drupella snails)<br />
were assessed in 1999. At least 260 species <strong>of</strong> hard corals have been identified from Red<br />
Sea waters, including 26 species not previously described and about 50 species as new<br />
records for <strong>the</strong> Red Sea. The predominant families were Acroporidae, Faviidae and<br />
Poritidae. <strong>Reefs</strong> also contained a diverse mix <strong>of</strong> s<strong>of</strong>t corals, hydrozoan fire corals,<br />
gorgonians, corallimorphs and zoanthids. Hard coral species diversity ranged from 20-100<br />
at different sites in <strong>the</strong> central to nor<strong>the</strong>rn Red Sea, with a high degree <strong>of</strong> homogeneity in<br />
each coral community. <strong>Reefs</strong> with moderate to high species diversity and abundance<br />
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