The Effects of Ultraviolet Radiation on Symbiotic Cnidarians: Action Spectra, Sites of Damage, and Bleaching

紫外线辐射对共生刺胞动物的影响：作用谱、损伤部位和漂白

• 批准号: 9216307
• 负责人: Michael Lesser
• 金额: $ 9.89万
• 依托单位: Bigelow Laboratory for Ocean Sciences
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-12-01 至 1994-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9216307&HistoricalAwards=false
• 关键词: Effects; Ultraviolet; Radiation; Symbiotic; Cnidarians

The decrease of the stratospheric ozone layer has resulted in an increase in the amount of harmful ultraviolet radiation reaching both terrestrial and aquatic ecosystems. Recent data indicates that this phenomenon will also affect tropical ecosystems. Tropical ecosystems have a long evolutionary history of exposure to fluxes of UV radiation, and can provide considerable insight into evolved mechanisms of protection against the deleterious effects of UV radiation. We presently do not know with confidence the wave length-dependent efficiency (action spectrum) of UV radiation for any physiological function in symbiotic cnidarians. Widespread coral bleaching events have recently been observed following anomolously high sea surface temperatures around the world. If UV radiation synergistically interacts with increased sea water temperatures, action spectra will be required to predict what dose of UV radiation can induce bleaching, with or without an increase in sea water temperature. An important step in understanding the bleaching phenomenon is to determine the independent and synergistic effects of temperature, visible radiation, and UV radiation on the functional biology of symbiotic associations.

平流层臭氧层的减少 有害紫外线辐射量的增加 影响陆地和水生生态系统。 最近的数据 指示 这种现象也会影响到 热带 生态系统热带生态系统有着悠久的进化历史 的 暴露于紫外线辐射的通量，并且可以 提供 对进化机制的深入了解 保护 抵御紫外线辐射的有害影响。 我们现在有 我不确定波长依赖效率 （作用光谱）的紫外线辐射的任何生理功能 在共生刺胞动物中。 大范围的珊瑚白化事件 最近观察到异常高的海面 世界各地的温度。 如果紫外线辐射 与海水温度升高相互作用，作用光谱 将需要预测什么剂量的紫外线辐射可以诱导 漂白，有或没有海水温度的增加。 理解漂白现象的一个重要步骤是 到 确定独立和协同 影响 的 温度， 可见光辐射和紫外线辐射 对 的 共生协会的功能生物学。