Global vulnerability of marine mammals to global warming.,Scientific Reports

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Global vulnerability of marine mammals to global warming.
Scientific Reports ( IF 3.8 ) Pub Date : 2020-01-17 , DOI: 10.1038/s41598-019-57280-3
Camille Albouy ₁ , Valentine Delattre ₂ , Giulia Donati _{3,

4} , Thomas L Frölicher _{5,

6} , Severine Albouy-Boyer ₇ , Marta Rufino _{8,

9} , Loïc Pellissier _{3,

4} , David Mouillot ₂ , Fabien Leprieur _{2,

10}

Affiliation

Although extinctions due to climate change are still uncommon, they might surpass those caused by habitat loss or overexploitation over the next few decades. Among marine megafauna, mammals fulfill key and irreplaceable ecological roles in the ocean, and the collapse of their populations may therefore have irreversible consequences for ecosystem functioning and services. Using a trait-based approach, we assessed the vulnerability of all marine mammals to global warming under high and low greenhouse gas emission scenarios for the middle and the end of the 21st century. We showed that the North Pacific Ocean, the Greenland Sea and the Barents Sea host the species that are most vulnerable to global warming. Future conservation plans should therefore focus on these regions, where there are long histories of overexploitation and there are high levels of current threats to marine mammals. Among the most vulnerable marine mammals were several threatened species, such as the North Pacific right whale (Eubalaena japonica) and the dugong (Dugong dugon), that displayed unique combinations of functional traits. Beyond species loss, we showed that the potential extinctions of the marine mammals that were most vulnerable to global warming might induce a disproportionate loss of functional diversity, which may have profound impacts on the future functioning of marine ecosystems worldwide.

中文翻译：

海洋哺乳动物对全球变暖的全球脆弱性。

尽管气候变化导致的灭绝仍然不常见，但在未来几十年内，它们可能会超过栖息地丧失或过度开发造成的灭绝。在海洋巨型动物中，哺乳动物在海洋中发挥着关键且不可替代的生态作用，因此其种群数量的减少可能对生态系统功能和服务产生不可逆转的后果。我们使用基于特征的方法，评估了 21 世纪中后期所有海洋哺乳动物在高温室气体排放和低温室气体排放情景下对全球变暖的脆弱性。我们发现北太平洋、格陵兰海和巴伦支海是最容易受到全球变暖影响的物种。因此，未来的保护计划应侧重于这些地区，那里有长期的过度开发历史，目前对海洋哺乳动物的威胁程度很高。在最脆弱的海洋哺乳动物中，有几种受威胁的物种，例如北太平洋露脊鲸 (Eubalaena japonica) 和儒艮 (Dugong dugon)，它们表现出独特的功能特征组合。除了物种丧失之外，我们还表明，最容易受到全球变暖影响的海洋哺乳动物的潜在灭绝可能会导致功能多样性的过度丧失，这可能对全球海洋生态系统的未来功能产生深远影响。显示出独特的功能特征组合。除了物种丧失之外，我们还表明，最容易受到全球变暖影响的海洋哺乳动物的潜在灭绝可能会导致功能多样性的过度丧失，这可能对全球海洋生态系统的未来功能产生深远影响。显示出独特的功能特征组合。除了物种丧失之外，我们还表明，最容易受到全球变暖影响的海洋哺乳动物的潜在灭绝可能会导致功能多样性的过度丧失，这可能对全球海洋生态系统的未来功能产生深远影响。

更新日期：2020-01-17

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