Collaborative Research: Ecology of Migratory Passerine Birds in Breeding and Wintering Areas: Demographic and Experimental Studies

合作研究：繁殖和越冬地区候鸟的生态学：人口统计和实验研究

• 批准号: 9213828
• 负责人: Thomas Sherry
• 金额: $ 12.6万
• 依托单位: Tulane University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-09-01 至 1997-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9213828&HistoricalAwards=false
• 关键词: Collaborative; Research; Ecology; Migratory; Passerine

The objectives of this research are to determine what factors limit or regulate populations of migratory birds that breed in north temperate forests and winter in the Neotropics. the basic questions concerns whether these factors operate more importantly in summer breeding areas at temperate latitudes, in neotropical winter quarters, or during both seasons. Through demographic and experimental studies, hypotheses will be tested to determine (1) if limitation occurs in both summer and winter, (2) if habit occupancy is determined by social dominance (depotism) or other preemptive behavior, (3) if individuals vary in fitness among habitats, that is, the demographic consequences of despotic habitat selection, and (4) what ecological variables affect habitat quality and therefore fitness. Emphasis will be on differential fitness among habitats i both summer and winter, including second-growth forests, agricultural lands, and other human-modified habitats. The results will advance our understanding of the population dynamics and community relations of these migrant bird species, as well as the factors affecting their population abundances. Such information will also contribute to the development of sound and effective conservation policies.

这项研究的目的是确定哪些因素限制或调节在北部温带森林和新型冬季繁殖的迁徙鸟类的种群。 基本问题涉及这些因素在温带纬度，新热带冬季或两个季节中更重要的是在夏季繁殖区域中更重要。 通过人口统计学和实验研究，将测试假设，以确定（1）是否在夏季和冬季发生限制，（2）是否由习惯占用率取决于社会优势（繁荣）或其他先发制人行为，（3）个人在习惯上的适应性变化，也就是说，（即独立习惯选择的人口统计学），以及（4）对习惯性的品质和适合性的品质。 我将重点放在夏季和冬季的栖息地之间的差异性适应性上，包括第二层森林，农业土地和其他人类改造的栖息地。 结果将提高我们对这些移民鸟类物种的人口动态和社区关系的理解，以及影响其人口丰度的因素。 这些信息还将有助于制定声音和有效的保护政策。