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Status of Coral Reefs of the World 2000

Status of Coral Reefs of the World 2000.pdf

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<strong>Status</strong> <strong>of</strong> <strong>Coral</strong> <strong>Reefs</strong> <strong>of</strong> East and North Asia<br />

CURRENT AND POTENTIAL CLIMATE CHANGE IMPACTS<br />

The Japan Marine Science and Technology Center (JAMSTEC) carried out extensive surveys<br />

<strong>of</strong> <strong>the</strong> 1998 bleaching in Akajima Island and <strong>the</strong> main island <strong>of</strong> Okinawa, and also collected<br />

meteorological and oceanographic data which were closely correlated with <strong>the</strong> bleaching.<br />

A simulation model was developed to estimate how variations in meteorological and<br />

oceanographic conditions affect <strong>the</strong> recovery rate <strong>of</strong> bleached coral reefs. Remote sensing<br />

from aircraft was also used to assess <strong>the</strong> impact <strong>of</strong> <strong>the</strong> 1998 bleaching, after attempts using<br />

satellite images were ineffective. The meteorological parameters <strong>of</strong> air temperature, cloud<br />

cover, solar irradiation, wind, rainfall, water temperatures, Kuroshio current strength, salinity,<br />

tidal level etc. were measured seeking correlations with <strong>the</strong> bleaching data. The analysis<br />

showed that variations in water temperatures in <strong>the</strong> Equatorial areas were reflected in<br />

Okinawa some months later and large areas with high surface water temperature (29 o C or<br />

higher) occurred in <strong>the</strong> summer season <strong>of</strong> 1998. The conclusion was that global<br />

oceanographic variations were <strong>the</strong> driving forces <strong>of</strong> <strong>the</strong> bleaching <strong>of</strong> coral reefs, but <strong>the</strong>re<br />

was no clear link that meteorological conditions could initiate <strong>the</strong> bleaching, and fur<strong>the</strong>r<br />

studies were recommended. The o<strong>the</strong>r conclusion was that recovery rates will be different<br />

among species, and strongly dependent on water temperatures and turbidity.<br />

MAPS, MONITORING AND MANAGEMENT CAPACITY<br />

China<br />

Research and monitoring capacity is generally low and coral reefs have had little previous<br />

prominence in policy making. In late <strong>2000</strong>, <strong>the</strong> first Reef Check-GCRMN training will be held<br />

in Hainan, supported by UNEP. Participants from three coastal provinces with coral reefs:<br />

Hainan, Guangdong and Guangxi Autonomous Region, will work on training materials<br />

translated into Chinese by <strong>the</strong> Chinese State Oceanic Administration. Earlier in <strong>2000</strong>, Reef<br />

Check in Hong Kong assembled 16 teams including government, academia, and <strong>the</strong> private<br />

sector to survey reefs throughout Hong Kong; probably <strong>the</strong> most concentrated volunteer<br />

monitoring programme in <strong>the</strong> world.<br />

Japan<br />

The establishment <strong>of</strong> Natural Parks under <strong>the</strong> Natural Parks Law is an effective means for<br />

environmental conservation in Japan. There are 6 Natural Parks with coral reefs in <strong>the</strong><br />

Amami, Ryukyu and Ogasawara Islands, with a land area <strong>of</strong> 45,854ha, approximately 11% <strong>of</strong><br />

total area <strong>of</strong> <strong>the</strong> coral reef islands. There are also 23 Marine Park Zones in National and<br />

Quasi-National Parks in <strong>the</strong>se coral reef islands (total areas 1,615ha). The total area <strong>of</strong> <strong>the</strong>se<br />

Marine Park Zones is approximately 1.7% <strong>of</strong> <strong>the</strong> coral reef area <strong>of</strong> Japan.<br />

• Ogasawara National Park, managed by <strong>the</strong> Environment Agency <strong>of</strong> Japan (EAJ).<br />

There are 7 Marine Park Zones in Chichi and Haha Islands with open ocean<br />

characteristics <strong>of</strong> high transparency, high species richness <strong>of</strong> fishes and abundant<br />

Tridacna maxima (giant clams). These reefs are small and appear to grow slowly,<br />

with some interesting limestone structures.<br />

• Iriomote National Park, managed by EAJ, including 3 Marine Park Zones in Sekisei<br />

Lagoon, and 1 in <strong>the</strong> moat around a coral reef island. The moat area has widely<br />

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