化石样本档案海洋生态系统的功能多样性:从当今沿海环境的经验测试
Carrie L Tyler1, Michał Kowalewski2
1Department of Geoscience, University of Nevada, Las Vegas, NV 89154.
概括
化石记录准确地反映了海洋无脊椎动物的功能多样性,使历史生态评估成为可能. 这项研究证实了使用化石来研究过去和现在的生态系统动态的可靠性.
科学领域:
- 古生物学的古生物学
- 海洋生态海洋生态学
- 生物多样性研究 生物多样性研究
背景情况:
- 化石记录对于理解生态系统演变和生物多样性趋势至关重要.
- 从化石中评估功能多样性对于生态和进化研究至关重要.
- 基于化石的功能多样性测量的可靠性仍然不确定.
研究的目的:
- 评估化石数据在代表海洋无脊椎动物的功能多样性的准确性.
- 为了比较活生生的本托斯,骨积累和预测的化石组合之间的功能多样性.
- 确定化石数据是否可以可靠地为历史生态评估提供信息.
主要方法:
- 比较了来自北卡罗来纳州51个沿海遗址的活生生本托斯,骨积累和预测化石记录.
- 分析了6个海洋无脊椎动物类的135种活物,150种骨物种和112种化石物种.
- 利用定量功能多样性指数 (丰富性,冗余性,脆弱性) 和多维功能空间分析.
主要成果:
- 在活体,死体和化石组合 (相关系数>0.85) 之间表现出高的功能忠实性.
- 观察到功能多样性指数和功能组之间的物种分布的一致性.
- 证实,基于化石的脆弱性估计合理近似的活体组合脆弱性.
结论:
- 化石数据提供了功能多样性的可靠估计,尽管存在保护偏差和时间平均.
- 古生物学数据可用于对海洋生态系统中的生态和进化过程进行暂时可扩展的评估.
- 化石功能多样性分析有助于理解过去的人类影响和长期生态系统动态.
关键词:
盆地盆地 (benthic) 盆地 (benthic) 盆地 (benthic) 盆地 (benthic) 盆地 (benthic) 盆地 (benthic) 盆地 (bentic) 盆地 (bentic) 盆地 (bentic) 盆地 (bentic) 盆地 (bentic) 盆地生态生态学 生态生态忠诚 忠诚 忠诚 忠诚 忠诚无脊椎动物是一种无脊椎动物.性格特征 性格特征 性格特征更多相关视频
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