LTREB: Temporal and Spatial Variation in the Abundance and Demography of Forest Birds --Effects of Climate and Biotic Factors

LTREB：森林鸟类数量和数量的时空变化——气候和生物因素的影响

• 批准号: 0108488
• 负责人: Richard Holmes
• 金额: $ 29.99万
• 依托单位: Dartmouth College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-07-01 至 2007-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0108488&HistoricalAwards=false
• 关键词: LTREB; Temporal; Spatial; Variation; Abundance

Climate patterns are changing rapidly as evidenced by increases in temperature associated with global warming and in annual variability in weather conditions. The impacts of such changes on animal populations are not well understood, but can be assessed with long-term demographic studies that take advantage of temporal and spatial variation in weather across environmental gradients. This proposal intensively examines the demographic responses of the Black-throated Blue Warbler, as well as other bird species at larger geographic scales, and quantifies annual shifts in spatial distribution and abundance. The 800 m elevational gradient at the Hubbard Brook Experimental Forest in the White Mountains provides a breadth of environmental conditions needed to compare the effects of intra- and inter-annual differences in local weather conditions and biotic factors (e.g., food abundance and predator density) on bird population dynamics and reproductive performance. Such information is key to assessing the potential local effects of climate change on bird populations, and ultimately to predicting how these populations and communities will respond in the future to climate-induced environmental change associated with human activities.

气候模式正在迅速变化，全球变暖导致的气温上升和天气状况的年度变化就是证明。 这种变化对动物种群的影响还不清楚，但可以通过长期的人口统计研究来评估，这些研究利用了环境梯度中天气的时空变化。 该提案深入研究了黑喉蓝莺以及其他鸟类在更大地理尺度上的人口响应，并量化了空间分布和丰度的年度变化。 白色山脉哈伯德布鲁克实验森林的海拔梯度为800米，提供了比较当地天气条件和生物因素（例如，食物丰富度和捕食者密度）对鸟类种群动态和繁殖性能的影响。 这些信息对于评估气候变化对鸟类种群的潜在当地影响，并最终预测这些种群和社区未来将如何应对与人类活动相关的气候引起的环境变化至关重要。