耐热的珊瑚 Stylophora pistillata 在慢性升高的基线温度下生存,但不能繁荣
Ann Marie Hulver1, Éric Béraud2, Shannon Dixon1
1School of Earth Sciences, The Ohio State University, 125 South Oval Mall, Columbus, OH 43210, USA.
The Science of the total environment
|September 4, 2025
概括
珊瑚礁面临着海洋温度的上升. 这项研究表明, 藻可以在高温下生存, 但其生长率会降低,
科学领域:
- 海洋生物学
- 珊瑚的生理学
- 气候变化的影响
背景情况:
- 珊瑚礁受到海洋温度上升的全球威胁,
- 预计到2100年海洋将升温至3°C,
研究的目的:
- 研究慢性高温对虫生理和生长的长期影响.
- 在预计的未来海洋条件下确定珊瑚的热生理极限和适应能力.
主要方法:
- 在水族馆养的Stylophora pistillata被暴露在高温 (+2.5°C和+5°C) 中26周.
- 测量包括表面积增长,新陈代谢率,能量储备和Symbiodiniaceae组成.
- 在基线温度下对实验后的恢复也进行了评估.
主要成果:
- 珊瑚最初利用了脂质,但在11周内适应了高温.
- 长期暴露于+5°C (30°C) 导致了更高的代谢需求和减少的生长,尽管保持了生物质和能量储备.
- 在恢复到基线温度后,生长和新陈代谢恢复.
结论:
- 尽管在生长和新陈代谢方面存在权衡问题,但Stylophora pistillata可以在30°C以下的白化温度下长期生存.
- 在海洋变暖的过程中,
- 在维持生存的同时, 繁荣受到威胁, 这突显了持续监测和适应策略的需要.
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