晚代新生代冷却重组了全球海洋浮游生物群落
Adam Woodhouse1, Anshuman Swain2,3,4,5, William F Fagan2
1University of Texas Institute for Geophysics, University of Texas at Austin, Austin, TX, USA. adam.woodhouse@austin.utexas.edu.
Nature
|February 15, 2023
概括
海洋浮游生物因气候变化而向赤道移动. 过去的气候变化显示了浮游生物多样性和分布的变化,为未来的生物多样性模式和潜在的灭绝风险提供了洞察力.
科学领域:
- 古生物学
- 海洋生物学
- 气候科学
背景情况:
- 由于气候变化,海洋生物的地理范围正向极地转移.
- 了解过去的生物多样性模式对于理解当前趋势和潜在的灭绝至关重要.
- 浮游生物化石为研究海洋生物地理学动态提供了丰富的数据集.
研究的目的:
- 分析过去800万年来浮游生物的多样性,度专业化和平等性.
- 研究古代气候变化与海洋生物地理之间的关系.
- 了解海洋生物多样性模式的发展及其驱动因素.
主要方法:
- 应用双边网络方法来量化多样性指标.
- 使用了Triton数据集,这是一个高分辨率的浮游生物的全球记录.
- 分析了过去800万年的数据.
主要成果:
- 在过去的800万年里,在生态和形态社区的公平性方面,全球范围向赤道转移.
- 这种变化与代晚期双极冰层形成期间的温度变化有关.
- 在浮游生物中发现了度等性梯度,与过去200万年生物多样性梯度相结合.
结论:
- 在过去的200万年之前,更高的度促进了整个生态和形态群体的社区平等.
- 过去和现在的范围转移表明海洋社区在变暖场景下显著向极地扩张.
- 研究提供了对海洋生物多样性的长期应对气候变化的见解.
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