• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of nannoplankton research: A publication of the International Nannoplankton Association >Quantifying rates of plankton evolution immediately following the Cretaceous-Paleogene mass extinction event (IODP Site U1405, NE Atlantic)
【24h】

Quantifying rates of plankton evolution immediately following the Cretaceous-Paleogene mass extinction event (IODP Site U1405, NE Atlantic)

机译：白垩纪-古生物大灭绝事件后立即量化浮游生物的演化速率（IODP站点U1405，东北大西洋）

获取原文
获取原文并翻译 | 示例
       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Cretaceous-Paleogene (K/Pg) mass extinction event, the most significant geological event to have affected calcareous nannoplankton, caused extinction of over 90% of species and was followed by the rapid diversification of new groups that form the core of modern coccolithophore diversity. In this study, we aim to quantify the rates of evolution in calcareous nannoplankton immediately following the mass extinction event (Danian). Our initial data come from a recently recovered K/Pg section (IODP Site U1403) drilled on the J-Anomaly Ridge in the northeast Atlantic Ocean during IODP Expedition 342. The succession includes an intact spherule layer and well-preserved nannofossils. We focus on a variety of morphometric traits, including coccolith length and width, and cellular traits, including cell geometry (cell size and number of coccoliths per cell). We will provide information on the evolution rates in the newly evolved lineages (i.e., Prinsius, Coccolithus, and Cruciplacolithus) and also survivor lineages (i.e., Cyclagelosphaera and Markalius) as a comparison. These data provide us with a better insight into the post mass extinction recovery of the marine ecosystem.
机译：白垩纪-古近纪（K / Pg）物种灭绝事件，是影响钙质纳米浮游生物的最重要的地质事件，造成了90％以上物种的灭绝，其次是构成现代球墨石生物多样性核心的新群体迅速多样化。在这项研究中，我们旨在量化大规模灭绝事件（达尼安）后钙质纳米浮游生物的演化速率。我们的初始数据来自IODP Expedition 342期间在东北大西洋J-Anomaly脊上钻出的最近恢复的K / Pg剖面（IODP站点U1403）。其后续过程包括完整的球体层和保存完好的纳米化石。我们专注于各种形态特征，包括球藻的长度和宽度，以及细胞特征，包括细胞的几何形状（细胞大小和每个细胞的球藻数量）。作为比较，我们将提供有关新进化世系（即Prinsius，Coccolithus和Cruciplacolithus）以及幸存世系（即Cyclagelosphaera和Markalius）的进化速率的信息。这些数据使我们对海洋生态系统大规模灭绝后的恢复有了更好的了解。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号