Testing a neutral model for the biotic effects of sea-level change

测试海平面变化生物影响的中性模型

• 批准号: 0948895
• 负责人: Steven Holland
• 金额: $ 14.79万
• 依托单位: University of Georgia Research Foundation Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-05-15 至 2015-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0948895&HistoricalAwards=false
• 关键词: Testing; neutral; model; biotic; effects

Testing a neutral model for the biotic effects of sea-level changeStephen Holland, University of GeorgiaEAR- 0948895ABSTRACTModern ecological studies have demonstrated how the area of suitable habitat governs the diversity of terrestrial organisms. In addition, the ability of species to disperse over broad distances affects diversity not only in local areas but also over broader regions. In the marine realm, changes in sea level can directly control the area of shallow marine continental shelf habitats and can also affect the distribution of habitat types on a shelf. As a result, sea-level change has the potential to drive changes in shallow marine biodiversity. Sea-level changes may therefore be responsible for the changes in marine biodiversity seen over geologic time scales and have the potential to affect marine biodiversity in the near future as global sea level rises.This research will test how the diversity of shallow-marine organisms responds to sea-level change, using a combination of computer modeling, field study of diversity changes in response to sea-level change in the distant geologic past, and database analysis of the marine fossil record. Field work will be conducted in Late Ordovician (~450 Ma) rocks of the eastern United States, building on data acquired in previous NSF-funded studies. This research will apply Hubbell?s (2001) model, which makes quantitative predictions about the relationship of diversity to habitat area and dispersal potential. The combination of modeling, field, and database approaches will bridge current research in ecology and paleontology, two fields that have historically had little interaction despite substantial overlap in their focus. Funds from this research will support the training of undergraduate research and a graduate student. Statistical methods developed in this research will also be distributed as freeware for use by scientists and the general public.

测试海平面变化的生物效应的中性模型斯蒂芬荷兰，佐治亚大学-0948895摘要现代生态学研究已经证明了适宜栖息地的面积如何控制陆地生物的多样性。此外，物种远距离扩散的能力不仅影响局部地区的多样性，而且影响更广泛区域的多样性。在海洋领域，海平面的变化可以直接控制浅海大陆架栖息地的面积，也可以影响大陆架栖息地类型的分布。因此，海平面变化有可能导致浅海生物多样性的变化。因此，海平面的变化可能是导致海洋生物多样性在地质时间尺度上发生变化的原因，并有可能在不久的将来随着全球海平面的上升而影响海洋生物多样性。本研究将利用计算机模拟、对遥远地质历史中生物多样性变化的实地研究、和海洋化石记录的数据库分析。野外工作将在美国东部的晚奥陶世（~450 Ma）岩石中进行，以之前NSF资助的研究中获得的数据为基础。这项研究将适用于哈贝尔？S（2001）模型，对物种多样性与生境面积和扩散潜力的关系进行了定量预测。建模，现场和数据库方法的结合将弥合目前的研究在生态学和古生物学，两个领域，历史上有很少的互动，尽管在他们的重点大量重叠。这项研究的资金将支持本科研究和研究生的培训。这项研究中开发的统计方法也将作为免费软件分发给科学家和公众使用。