Collaborative Reserach: Demography and Population Dynamics in a Fire-adapted Tree Species, Pinus Rigida

合作研究：适应火的树种刚松的人口统计学和种群动态

• 批准号: 9806923
• 负责人: Jessica Gurevitch
• 金额: $ 21.35万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-10-15 至 2003-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9806923&HistoricalAwards=false
• 关键词: Collaborative; Reserach; Demography; Population; Dynamics

Gurevitch 9806923 Pitch pines, Pinus rigida, dominate or are important components of pine barrens and other forests covering over a million acres along the Atlantic coastal plain from Maine and Massachusetts to Maryland and the Appalachians. Approximately 100,000 acres of pitch pine dominated pine barrens exist and have protected status on Long Island, New York. Pitch pines, like many other pine species, have many adaptations to fire and require frequent fire both to regenerate and to retain their dominance in these plant communities. A greater understanding of the forces shaping the growth and decline of pitch pine populations promises to offer more general insight into factors affecting the behavior of other disturbance- prone plant populations and communities. While ecologists have understood for some time that natural populations and communities commonly never approach steady-state conditions, this study will help to develop practical tools needed to bridge the gulf between this conceptual understanding and the way we actually study and analyze natural populations. Data on the survival, growth and fecundity of pitch pine seedlings and mature plants will be collected from sites in the Long Island pine barrens with known fire histories. The data will be analyzed using an extension of mathematical demographic matrix models that we will develop, expanding upon the approaches used in previous studies of plant populations.

从缅因州和马萨诸塞州到马里兰州和阿巴拉契亚山脉的大西洋沿海平原沿线有100多万英亩的松林和其他森林，古里维奇9806923节材松树是松树荒地和其他森林的主要或重要组成部分。在纽约长岛，大约有10万英亩以松树为主的松树荒地存在，并具有受保护的地位。像许多其他松树一样，沥青松对火有许多适应，需要频繁的火才能再生并保持它们在这些植物群落中的优势。更深入地了解影响沥青松种群消长的力量，有望为影响其他易受干扰的植物种群和群落的行为因素提供更全面的洞察。虽然生态学家已经了解自然种群和群落通常永远不会接近稳态条件，但这项研究将有助于开发所需的实用工具，以弥合这种概念上的理解与我们实际研究和分析自然种群之间的鸿沟。有关沥青松幼苗和成熟植物的存活、生长和繁殖力的数据将从长岛松树荒地的已知火灾历史地点收集。这些数据将使用我们将开发的数学人口统计矩阵模型的扩展进行分析，扩展到以前植物种群研究中使用的方法。