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温暖的温度与减少体质和多样化率有关,同时增加了适应寒冷的海鸟的灭绝风险

Ying Xiong¹, Liqing Fan², Yongbin Chang³

¹Department of Zoology, College of Life Science, Sichuan Agricultural University, Ya'an, China.

Global change biology

|December 13, 2024

概括

全球变暖影响着鸟类的体质和丰富性,对Procellariimorphae (PM) 和非Procellariimorphae (NPM) 的海鸟有明显的影响. 温暖的气温增加了PM海鸟的灭绝风险,突出了它们的脆弱性.

科学领域:

生态生态学生态生态学
进化生物学进化生物学
鸟类学鸟类学是一门学科.

背景情况:

人为气候变化正在导致快速变暖,影响生物多样性.
生态的新陈代谢理论预测,由于气候变暖,鸟类的体重和丰富性下降.
关于这些变化在种类中普遍存在的先前研究仍然存在争议.

研究的目的:

研究与气候变化相关的海鸟丰富度和体质的空间模式.
为了比较两个主要的海鸟群体之间的这些模式:Procellariimorphae (PM) 和非Procellariimorphae (NPM).
了解祖先气候起源对当前生态反应的影响.

主要方法:

遗传学方法和化石数据被结合起来,分析了328种海鸟.
祖先状态重建被用来推断进化历史和特征.
富裕,体质和多样化率的空间模式被合成.

主要成果:

在PM和NPM海鸟之间观察到身体质量-丰富性关系和多样化率的明显模式.
较小的PM海鸟从较大的祖先进化到温暖的水域,表现出较慢的多样化速度.
温暖的海温与PM海鸟的灭绝风险更高相关,与NPM海鸟不同,NPM海鸟在高度面临风险.

结论:

祖先的气候起源解释了PM和NPM海鸟对环境因素的不同反应.
来自较冷水域,体质和多样化率较低的PM海鸟更容易受到变暖的影响.
保护策略可能需要考虑不同海鸟群体的特定进化历史和气候脆弱性.

关键词:

生物多样性生物多样性身体质量身体质量气候变暖气候变暖灭绝的风险灭绝的风险海洋鸟类海鸟

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