The mass-bleaching of coral reefs in the Ishigaki Lagoon, 1998
The mass-bleaching of coral reefs in the Ishigaki Lagoon, 1998
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石垣泻湖珊瑚礁大规模白化，1998 年
DOI：
10.3755/jcrs.1999.31
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
S. Mezaki
中科院分区：
文献类型：
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作者：
H. Hasegawa;K. Ichikawa;M. Kobayashi;T. Kobayashi;M. Hoshino;S. Mezaki
1998年夏季，琉球群岛周围多处出现珊瑚白化现象。一些研究人员认为这与高海面温度有关。然而，八重山岛群的石垣岛周围的珊瑚白化现象自7月以来一直很严重，这表明在白宇雨季已经出现了白化现象。对石垣岛珊瑚的研究表明：（1）珊瑚白化可能是1998年7月至9月期间持续的高海面温度造成的。珊瑚已经受到严重破坏，因为在一年中的白乌季节，降雨量几乎是正常年份的两倍。根据1998年夏季石垣岛周围护城河的白化观测结果，认为石垣岛周围护城河的白化过程可分为3个时间阶段：1）早期阶段：6月20日左右至8月上旬; 2）成熟阶段：8月中旬至9月上旬; 3）末期阶段：从9月中旬到2005年中旬，各阶段的白化过程与冲绳的季节变化和气候条件是同步的，但有一定的滞后性。
Coral bleaching occurred at various places around the Ryukyu Islands in summer 1998. Several researchers have suggested links to high sea surface temperature. However, the observation of coral bleaching around Ishigaki-jima of the Yaeyama Island Group where the bleaching has been extensive since July shows that there was already a sign of the event during the Baiu rainy season.The study of corals on Ishigaki-jima presents the following:1) Coral bleaching was probably caused by the continued high sea surface temperature from July through September 1998.2) The corals had already been severely damaged by the sedimentation of red soil from the disturbed land surface during the Baiu season of the year which had nearly twice as much rainfall as normal year. The subsequent high sea surface temperature in summer contributed to accelerated bleaching.The observation of bleaching in moats around Ishigaki-jima in summer 1998 suggests that the progress of bleaching be divided into the following three time stages:1) Early stage: from around June 20 through early August2) Mature stage: from middle August through early September3) Final stage: from middle September through middle OctoberThe bleaching process divided by these stages is synchronous, with a time lag, with the seasonal change in sea surface temperature and the prevailing weather conditions in Okinawa.