在海洋变暖和酸化联合下,珊瑚适应的广泛范围
Christopher P Jury1, Robert J Toonen1
1Hawai'i Institute of Marine Biology, School of Ocean and Earth Science and Technology, University of Hawai'i at Mānoa , Honolulu, HI 96744, USA.
Proceedings. Biological sciences
|September 24, 2024
概括
珊瑚的化率显示出很高的遗传性,表明了对海洋变暖和酸化的适应潜力. 然而,快速缓解气候变化对于珊瑚礁的生存至关重要.
科学领域:
- 海洋生物学 海洋生物学
- 气候变化科学 气候变化科学
- 进化生物学 进化生物学
背景情况:
- 造礁珊瑚因海洋变暖和酸化而面临崩.
- 珊瑚具有适应不断变化的海洋环境的潜力.
研究的目的:
- 评估在气候变化压力因素的结合下,珊瑚化率的遗传性.
- 调查珊瑚适应的潜力和对变暖和酸化耐受性的共同进化.
主要方法:
- 在八种不同的印度太平洋珊瑚礁构建珊瑚物种中检查了化速率的广义遗传性 (H2).
- 评估了对变暖和酸化的耐受性,以及它们对化的相互作用效应.
- 利用历史数据来估计热承受力的潜在增加.
主要成果:
- 所有八种珊瑚物种在联合压力因素下显示出对化速率 (0.23-0.56) 的高遗传性.
- 对变暖和酸化的耐受性是正相关的,在大多数物种中没有显著的相互作用.
- 据估计,在50年内,潜在的耐热度增加了1.0-1.7°C,因物种而异.
结论:
- 珊瑚物种通过遗传性化特征显示出适应海洋变暖和酸化的巨大潜力.
- 虽然适应是可能的,但目前的气候变化速度需要紧急缓解,以确保珊瑚礁的持久性.
- 这些发现对于建模珊瑚的反应,预测进化和告知保护策略至关重要.
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