Collaborative Research: Mesozoic Tethyan paleocommunity dynamics: Modelling complexity and stablity during times of biotic escalation and community restructuring

合作研究：中生代特提斯古群落动态：模拟生物升级和群落重建期间的复杂性和稳定性

• 批准号: 1629776
• 负责人: Peter Roopnarine
• 金额: $ 20.89万
• 依托单位: California Academy of Sciences
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-09-01 至 2021-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1629776&HistoricalAwards=false
• 关键词: Collaborative; Research; Mesozoic; Tethyan; paleocommunity

Collaborative Research: Mesozoic Tethyan paleocommunity dynamics: Modelling complexity and stablity during times of biotic escalation and community restructuringThe Mesozoic Era began in the aftermath of Earth's largest mass extinction 251 million years ago, ending 66 million years ago with another mass extinction. The current project focuses on ecosystems of an ancient ocean which covered much of western Europe during the Mesozoic and left behind a rich, well-documented fossil record. The groundwork for modern oceans was laid during this time with increasingly complex ecosystems. The relationship between the complexity and stability of ecosystems is, however, poorly understood. The project will examine that relationship by modeling the complex dynamics of Mesozoic marine ecosystems using food webs, which capture the interactions and energy transfer between species in biological communities. Food web reactions to environmental disturbances are informative of ecosystem resilience. Analyzing ancient food webs will be accomplished with a suite of mathematical and computational models. Ecosystem responses to changes in biological complexity and environmental disturbance remain poorly understood. Anthropogenically-driven global biological change is currently resulting in catastrophic losses of biodiversity. To anticipate ecosystem responses and effectively manage resources, we must understand how ecosystems respond to extreme changes; yet there are no precedents in human experience to guide us. The fossil record documents extreme ecosystem changes and this project will provide analogs from the past to enable better forecasts for modern marine ecosystems. This information will be distributed to the public, educators and students through a variety of programs at the California Academy of Sciences.

合作研究：中生代Tethyan古社区动态：在生物升级和社区重组中生代时代的复杂性和稳定性建模始于地球上25100万年前最大的质量灭绝之后，以6600万年前的形式结束了6600万年前的终结。当前的项目着重于古代海洋的生态系统，该系统在中生代期间覆盖了西欧的大部分地区，并留下了丰富，有据可查的化石记录。在这段时间内，现代海洋的基础是日益复杂的生态系统。但是，生态系统的复杂性和稳定性之间的关系知之甚少。该项目将通过使用食物网对中生代海洋生态系统的复杂动态进行建模，从而捕获生物群落中物种之间的相互作用和能量传递，来研究这种关系。食品网络对环境障碍的反应是生态系统弹性的信息。分析古代食物网将通过一套数学和计算模型来完成。生态系统对生物复杂性变化和环境干扰的变化的反应仍然很少理解。人类学驱动的全球生物学变化目前正在导致生物多样性的灾难性损失。为了预测生态系统的响应并有效地管理资源，我们必须了解生态系统如何响应极端变化；然而，人类的经验没有先例来指导我们。化石记录记录了极端生态系统的变化，该项目将提供从过去的类似物，以实现对现代海洋生态系统的更好预测。这些信息将通过加利福尼亚科学院的各种课程分发给公众，教育工作者和学生。