夜间的人工光 (ALAN) 破坏了珊瑚礁的行为模式
M L Mardones1, J Lambert1, J Wiedenmann1
1Coral Reef Laboratory, University of Southampton, European Way, Southampton, UK.
Marine pollution bulletin
|August 14, 2023
概括
夜间的人工光 (ALAN) 破坏了珊瑚的触角行为,影响了食. 夜间的珊瑚对光污染的耐受性比白天的珊瑚更强.
科学领域:
- 海洋生物学 海洋生物学
- 生态生态学 生态生态学
- 环境科学 环境科学
背景情况:
- 夜间的人工光 (ALAN) 是一种影响自然日光周期的全球污染物.
- 关键的珊瑚礁建造者斯克拉克提尼珊瑚依赖于依赖光的过程.
- 阿兰对珊瑚的健康和功能构成威胁.
研究的目的:
- 为了研究ALAN对共生珊瑚的迪尔触角膨胀和收缩行为的影响.
- 评估物种特异性对不同水平的ALAN暴露的反应.
- 了解ALAN对珊瑚的养和营养获取的影响.
主要方法:
- 四种共生性斯克拉克提尼亚珊瑚物种接受了受控的ALAN治疗.
- 亚兰的水平在0.4至2.5μmol量子m−2s−1.1之间.
- 在不同的光照条件下,监测了触角膨胀和收缩模式.
主要成果:
- 1.2μmol量子m−2s−1及以上的ALAN水平在日间珊瑚物种 (Stylophora pistillata,Duncanopsammia axifuga) 中破坏了触手扩张.
- 夜间的珊瑚物种 (Montastraea cavernosa,Lobophyllia hemprichii) 对ALAN的敏感性较小.
- 不同的反应表明珊瑚物种对光污染的耐受程度不同.
结论:
- 阿兰显著干扰珊瑚的触角行为,这是一个关键的养机制.
- 食中断可能会损害暴露在人工光线下的珊瑚的营养获取.
- 在受影响的浅水珊瑚礁地区,ALAN可能会导致珊瑚社区结构的变化.
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