Environmental change, seasonal interactions, and demographic responses of arctic-breeding birds

环境变化、季节性相互作用和北极繁殖鸟类的人口统计反应

• 批准号: RGPIN-2017-06391
• 负责人: Smith, Paul
• 金额: $ 1.49万
• 依托单位: Carleton University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=631952
• 关键词: Environmental; change; seasonal; interactions; demographic

Many shorebird species travel the length of the hemisphere from breeding grounds in the Arctic to wintering grounds in Central and South America. The conditions they encounter throughout the annual cycle can have interactive and profound influences on behaviour, physiological condition and ultimately demography. These seasonal interactions, or carry-over effects, can explain patterns that would be inexplicable at any one site in isolation and are increasingly viewed as important determinants of demographic processes. The harsh and unpredictable breeding conditions of the Arctic provide substantial variation with which to test hypotheses about seasonal interactions. This, coupled with arctic-breeding shorebirds’ use of a restricted set of stopover sites during migration, makes for an ideal system within which to study the role of carry-over effects.

许多滨鸟从北极的繁殖地迁徙到中美洲和南美洲的越冬地。他们在整个年度周期中遇到的条件可能对行为、生理状况和最终的人口状况产生相互作用和深远的影响。这些季节性的相互作用，或携带效应，可以解释在任何一个单独的地点都无法解释的模式，并日益被视为人口过程的重要决定因素。北极严酷和不可预测的繁殖条件为检验有关季节相互作用的假设提供了大量的变化。这一点，再加上北极繁殖的滨鸟在迁徙过程中使用一组有限的中途停留点，构成了一个理想的系统，在这个系统中，研究了携带效应的作用。