LTREB: Long-term Demography of Florida Scrub Plants

LTREB：佛罗里达灌木丛植物的长期人口统计

• 批准号: 9815370
• 负责人: Eric Menges
• 金额: $ 25万
• 依托单位: Archbold Expeditions, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-07-01 至 2003-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9815370&HistoricalAwards=false
• 关键词: LTREB; Long; term; Demography; Florida

9815370MengesSince 1988, staff at the Archbold Biological Station have collected demographic and ecological data on thousands of plants of 10 Florida scrub species to answer fundamental ecological questions. Among these are whether population viability is affected by population size and fire regimes, whether long-term population dynamics and extinction are controlled by environmental stochasticity and rare events, whether long-term trends can be predicted from shorter-term data, and whether metapopulation persistence is likely even of local dynamics are unstable. Florida scrub populations have been studied at regular intervals over the last 10 years using consistent measurements, resulting in data summarizing survival, growth, fecundity, and recruitment for use in population modeling. This research has been coupled with intensive investigations of genetics, breeding systems, pollination, seed dormancy and microhabitat requirements. These plant data sets are longer-term and consider more populations than most other studies used to model population viability. These long term data sets allow characterization of environmental stochasticity, essential in modeling population viability and extinction. Data collection from a number of populations quantifies demographic variation with respect to microhabitat and the natural disturbance regime (fire) and allows modeling of population viability through the fire cycle and across metapopulations.

自1988年以来，阿奇博尔德生物站的工作人员收集了佛罗里达州10种灌木的数千种植物的人口统计和生态数据，以回答基本的生态问题。这些问题包括种群的生存能力是否受到种群规模和火灾制度的影响，长期种群的动态和灭绝是否受到环境随机性和罕见事件的控制，是否可以从短期数据预测长期趋势，以及集合种群的持久性是否可能，即使局部动态也是不稳定的。在过去的10年里，对佛罗里达灌木种群进行了定期的研究，使用一致的测量方法，产生了总结存活、生长、繁殖力和招募的数据，用于种群建模。这项研究还结合了对遗传学、繁育系统、授粉、种子休眠和微生境要求的深入调查。这些植物数据集是长期的，与大多数用于模拟种群生存能力的其他研究相比，它们考虑了更多的种群。这些长期数据集可以描述环境的随机性，这对于模拟种群的生存和灭绝至关重要。从若干种群收集的数据量化了与微生境和自然干扰制度(火)有关的人口变化，并允许通过火循环和跨集合种群对种群生存能力进行建模。