Light pollution alters the skeletal morphology of coral juveniles and impairs their light capture capacity
Light pollution alters the skeletal morphology of coral juveniles and impairs their light capture capacity
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光污染改变了珊瑚幼体的骨骼形态并损害了它们的光捕获能力
DOI：
10.1016/j.marpolbul.2023.115212
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发表时间：
2023
影响因子：
5.8
通讯作者：
Loya, Yossi
中科院分区：
文献类型：
--
作者：
Kramer, Netanel;Tamir, Raz;Galindo-Martínez, Claudia Tatiana;Wangpraseurt, Daniel;Loya, Yossi
城市化和基础设施发展改变了许多沿海海洋栖息地的夜间灯光状况。因此，夜间人造光（ALAN）正在成为全球生态问题，特别是在近岸珊瑚礁生态系统中。然而，ALAN 对珊瑚结构及其光学特性的影响尚未被探索。在这里，我们使用发光二极管 (LED) 和荧光灯，模拟光污染的栖息地，对在 ALAN 条件下生长的幼年雌花柱珊瑚进行了长期异地实验（定居后 30 个月）。我们发现，暴露于 ALAN 的珊瑚表现出骨骼形态的改变，从而导致光捕获能力降低，同时与环境光下的珊瑚相比，它们也获得了更好的结构和光学修改，以增加光水平。此外，与对照珊瑚相比，光污染的珊瑚形成了更多孔的骨骼。我们认为 ALAN 会引起珊瑚的光应激，导致白天照明期间可用于光合作用的太阳能减少。
Urbanization and infrastructure development have changed the night-time light regime of many coastal marine habitats. Consequently, Artificial Light at Night (ALAN) is becoming a global ecological concern, particularly in nearshore coral reef ecosystems. However, the effects of ALAN on coral architecture and their optical properties are unexplored. Here, we conducted a long-term ex situ experiment (30 months from settlement) on juvenileStylophora pistillatacorals grown under ALAN conditions using light-emitting diodes (LEDs) and fluorescent lamps, mimicking light-polluted habitats. We found that corals exposed to ALAN exhibited altered skeletal morphology that subsequently resulted in reduced light capture capacity, while also gaining better structural and optical modifications to increased light levels than their ambient-light counterparts. Additionally, light-polluted corals developed a more porous skeleton compared to the control corals. We suggest that ALAN induces light stress in corals, leading to a decrease in the solar energy available for photosynthesis during daytime illumination.