Collaborative Research: Ecosystem Responses to Progressive and Rapid Climate Change During the Holocene in New England

合作研究：新英格兰全新世期间生态系统对渐进和快速气候变化的反应

• 批准号: 0816739
• 负责人: Yongsong Huang
• 金额: $ 12.4万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-09-01 至 2010-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0816739&HistoricalAwards=false
• 关键词: Collaborative; Research; Ecosystem; Responses; Progressive

The future trajectories of natural ecosystems and consequences for human societies will vary greatly depending on the extent to which relatively gradual changes in average climate are accompanied by episodic instances of disturbance or short-term extremes in climate that may, in turn, trigger abrupt shifts in vegetation. For example, under a gradually changing climate, abrupt shifts in species abundances and assemblages may be triggered by drought, fire, or human activity. Our ability to anticipate future changes would benefit from insights into the details of previous ecological transitions, particularly those that have been abrupt. This project involves three collaborating research groups employing complementary approaches to reconstruct past climate-ecosystem dynamics. High-resolution analyses of lake-sediment records from southern New England will reveal past changes in climate, vegetation, and disturbance for the last 15,000 years, thus improving our knowledge of the mechanisms by which climate change interacts with environmental extremes and disturbance to control the pace and patterns of ecological change.The results of this work will inform our understanding of fundamental ecological dynamics and provide insights into the fine-scale, short-term interactions of vegetation, disturbance, and climate. The project will yield samples, data, and analyses that will be permanently archived and accessible in raw, processed, and synthesized formats through a web-based information management system, numerous publications, and international symposia. Public outreach efforts will involve curriculum development for model courses, undergraduate film and journalism projects, and collaborations with scientific museums. The interdisciplinary and multi-institutional research environment will provide training for graduate students and mentoring for undergraduates.

自然生态系统的未来轨迹和对人类社会的后果将大大不同，具体取决于平均气候中相对逐渐变化的程度，并伴随着气候下极端或短期极端的情节案例，而这种情况又可能会触发植被中的突然变化。 例如，在逐渐变化的气候下，物种丰度和组合的突然变化可能是由干旱，火或人类活动引发的。 我们预测未来变化的能力将受益于对先前生态过渡的细节的见解，尤其是那些突然的生态过渡的细节。 该项目涉及三个采用互补方法来重建过去气候生态系统动态的协作研究小组。 对新英格兰南部湖泊居民记录的高分辨率分析将揭示过去15，000年来气候，植被和干扰的过去变化，从而提高了我们对气候变化与环境极端和障碍相互作用的机制的了解，以控制这种工作的速度和模式。这项工作的结果将使我们对素食的互动式，并融入了景点，并融入了这种互动，并融入了详尽的景点，并融入了洞察力，并融入了洞察力，并将其融合到本质上。和气候。 该项目将通过基于Web的信息管理系统，众多出版物和国际研讨会在RAW，处理和合成的格式中生产样本，数据和分析。 公共外展工作将涉及模型课程，本科电影和新闻项目的课程开发，以及与科学博物馆的合作。 跨学科和多机构研究环境将为研究生提供培训，并为本科生提供指导。