在Neotoma古生态数据库中更新了北美小型哺乳动物化石地点的时间表
Val J P Syverson1,2, Simon J Goring3, Nicola Cullen4
1Life and Environmental Sciences, University of California, Merced, Merced, CA, USA. vsyverson@gmail.com.
Scientific data
|January 27, 2026
概括
这项研究重新校准了Neotoma古生态数据库中北美小型哺乳动物化石的放射性碳日期. 这些更新的时间表提高了社区古生态学研究的物种共发生数据的准确性.
科学领域:
- 古生态学 古生态学
- 四年级科学四年级科学
- 气候变化研究研究 气候变化研究
背景情况:
- 社区古生态学依赖于准确的物种共发生数据,而这些数据往往受到古生物学数据库中未经校准的放射性碳日期的限制.
- 尼奥托马古生物学数据库存储有价值的四年纪化石数据,但需要更新的年龄估计,以便在大规模研究中有效使用.
- 准确的时间数据对于理解生态社区对长期气候变化的反应至关重要,例如普世-全新世过渡.
研究的目的:
- 在Neotoma数据库中重新评估和校准北美小型哺乳动物化石收藏的放射性碳 (14C) 时间表.
- 为化石集群提供最新的日历年年龄估计,以加强古生态分析.
- 促进古生物学数据与其他古生物学环境代理数据的整合,以便进行全面的气候变化研究.
主要方法:
- 在Neotoma数据库中对所有14C日期的北美小型哺乳动物集合进行系统的重新评估.
- 对现有和新获得的放射性碳日期应用更新的校准方法.
- 将新校准的时间表和额外的放射性碳日期集成到Neotoma数据库中.
主要成果:
- 在Neotoma数据库中增加了2074个新的放射性碳日期.
- 为1553个化石藏品生成新的,校准的放射性碳年代表.
- 更新的年代表提供日历年龄估计,覆盖了比以前可用的更多的地点和日期.
结论:
- 更新的Neotoma数据库为北美小型哺乳动物化石集合提供了改进的日历年年龄估计.
- 这些改进将通过提供更可靠的数据来分析气候变化期间的生态变化,使社区古生态学受益显著.
- 改进的时间分辨率促进了跨学科的研究,将古生物学数据与其他古环境代理数据整合起来.
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