三亚纪海洋双动物群体的分类学和生态转型
Xue Miao1, Jinnan Tong1, Yunfei Huang2
1State Key Laboratory of Biogeology and Environmental Geology, School of Earth Sciences, China University of Geosciences, Wuhan, China.
PeerJ
|May 13, 2025
概括
南中国的两动物群体在三叠纪早期就出现了分类学复苏,但生态多样性直到三叠纪中期才出现. 生态系统结构在卡尔尼亚阶段发生了显著的转变.
科学领域:
- 古生物学的古生物学
- 海洋生态海洋生态学
- 进化生物学 进化生物学
背景情况:
- 珀米亚-特里亚斯纪大灭绝严重改变了海洋底层生态系统,为现代动物群,包括双动物和类动物铺平了道路.
- 了解整个特里亚斯纪海洋社区的生态重组,特别是分类学和生态多样性之间的关系至关重要,但仍未得到充分探索.
研究的目的:
- 为了研究中国南方浅海面的特里亚斯纪双动物群落.
- 记录区域进化模式并评估它们与全球趋势的联系.
- 探索三叠纪时期的分类学和生态多样性之间的相互关系.
主要方法:
- 对来自中国南部浅海环境的三亚纪双化石组合的分析.
- 区域发现与全球古生物学数据的比较.
- 随着时间的推移,对分类学丰富性和生态多样性指标的评估.
主要成果:
- 在南中国三叠纪时期的分类学和生态变化的时间表中观察到广泛的一致性.
- 确定了南中国和全球数据集中分类学和生态多样性的脱.
- 发现了与稳定的生态多样性并发的分类学丰富性的显著变化.
- 记录了在初三亚纪早期的早期分类复苏和在中三亚纪中期的生态多样性完全恢复.
- 突出了卡尔尼亚阶段作为一个关键的过渡时期,其特点是动物占主导地位,息地深度增加.
结论:
- 南中国的三纪双进化反映了分类学丰富性和生态功能之间的复杂相互作用.
- 分类学和生态多样性的脱表明,物种丰富性与生态系统复杂性的不同恢复轨迹.
- 卡尔尼亚过渡表明了海洋底层生态系统的根本性重组,这对理解灭绝后恢复动态有影响.
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