深海底的早期殖民 - - 生态系统的长期积累
Luis A Buatois1, M Gabriela Mángano1, Maximiliano Paz1
1Department of Geological Sciences, University of Saskatchewan, Saskatoon, SK S7N 5E2, Canada.
概括
痕迹化石显示,深海生态系统的演变缓慢,在奥尔多维纪时期建立了现代风格的地社区. 这与全球变冷和海洋氧化增加相吻合,这是由生物流和气候变化推动的.
科学领域:
- 古生物学的古生物学
- 海洋生物学 海洋生物学
- 地质地质地质地质地质地
背景情况:
- 深海化石记录稀少,限制了对古代海洋生态系统演变的理解.
- 痕迹化石提供了一个有价值的替代体化石重建过去的谷底活动.
研究的目的:
- 通过使用痕迹化石数据,研究深海盆地生态系统的演化.
- 确定深海生态系统发展的时间和环境驱动因素.
主要方法:
- 编制了一个全球数据集,从720个埃迪亚卡拉-德沃尼亚岩石单元中收集了痕迹化石.
- 分析了跟踪化石的多样性和丰富性,与古环境代理相比.
主要成果:
- 建立现代风格的深海生态系统是一个漫长的过程.
- 在奥尔多维纪期间,生态系统的发展与全球冷却和海洋氧化增加并发.
- 生物化,特别是开放式挖掘,增强沉积物通风和氧化.
结论:
- 痕迹化石为深海生态系统的演变提供了关键的见解.
- 海洋氧化和气候在形成奥尔多维纪深海盆地社区方面发挥了关键作用.
- 纪生物流变化表明,与气候驱动的海洋循环和氧气波动有联系.
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