The influence of solar radiation on bleaching of shallow water reef corals in the Andaman Sea, 1993–1998
The influence of solar radiation on bleaching of shallow water reef corals in the Andaman Sea, 1993–1998
复制标题
太阳辐射对安达曼海浅水珊瑚礁白化的影响，1993-1998
DOI：
10.1007/s003380100160
复制
发表时间：
2001
期刊：
影响因子：
3.5
通讯作者：
Barbara E. Brown
中科院分区：
文献类型：
--
作者：
R. Dunne;Barbara E. Brown
摘要。从历史上看，海水温度升高的异常情况几乎一直被专门用于解释自然珊瑚白化现象的发生。然而，对于环境条件似乎有利于白化但却未观察到白化现象的情况，人们关注甚少。在本文中，我们研究了安达曼海某一地点6年期间的海水温度和太阳辐射（光合有效辐射；PAR，400 - 700纳米）的同期记录，该地点自1979年以来一直对浅水礁珊瑚群落进行定期监测。对5月记录到海水温度异常的4年（1991年、1995年、1997年和1998年）进行了比较。我们提出PAR和海水温度之间存在一种复杂的相互作用，即海水温度达到最高值之前太阳辐射的增强实际上可能会保护珊瑚免受随后的白化。此外，我们还证明了海平面异常在改变水下光照条件以造成此类情况方面所起的重要作用。
Abstract. Historically, elevated sea-temperature excursions have been used almost exclusively to explain incidences of natural coral bleaching. Little attention, however, has been paid to instances where environmental conditions appear conducive to bleaching but none has been observed. In this paper we examine contemporaneous records of sea temperature and solar radiation (photosynthetically active radiation; PAR, 400–700 nm) over a 6-year period at a site in the Andaman Sea where regular monitoring of shallow water reef coral communities has been conducted since 1979. Four years (1991, 1995, 1997, and 1998) when anomalous sea temperatures were recorded in May are compared. We suggest a complex interaction of PAR and sea temperature, whereby elevated solar radiation prior to sea-temperature maxima may actually protect corals against subsequent bleaching. In addition, we demonstrate the important role that sea-level anomalies play in modifying the underwater light regime to bring about such conditions.