Seasonal connectivity in settlement decision of migratory birds

候鸟定居决策中的季节性连通性

• 批准号: NE/C00065X/2
• 负责人: William Sutherland
• 金额: $ 9.83万
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2006
• 资助国家: 英国
• 起止时间: 2006 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FC00065X%2F2
• 关键词: Seasonal; connectivity; settlement; decision; migratory

In migratory bird species, the ability of individuals to settle on good quality winter and breeding habitat can determine their survival and reproductive success. Recent evidence shows that in migratory systems, some individuals can occupy the best sites at both ends of the range. This connectivity has considerable consequences for demography, life histories and conservation. In many migratory birds, parents migrate independently of their offspring, so juveniles must choose winter and breeding locations without any guidance. As adults tend to return to the sites they have used previously, these juvenile decisions are critical. This study will identify the mechanisms that determine juvenile settlement decisions, and their implications for population regulation, in black-tailed godwits, a migratory shorebird. Studies of migratory species are complicated by the vast distances over which individuals move. The godwit system is ideal for such studies because large numbers of marked individuals are routinely tracked throughout the range, and because chemical signatures in feathers can determine the wintering habitat of breeding birds. Understanding these settlement decisions will allow us to predict the consequences of the loss of different sites throughout the range for this species, and to identify the key parameters of importance in similar migratory species.

在候鸟物种中，个体在优质冬季和繁殖栖息地定居的能力可以决定它们的生存和繁殖成功。最近的证据表明，在迁徙系统中，有些个体可以占据范围两端的最佳地点。这种连通性对人口统计学、生活史和保护有相当大的影响。在许多候鸟中，父母独立于他们的后代迁徙，所以幼鸟必须在没有任何指导的情况下选择冬季和繁殖地点。由于成年人倾向于返回他们以前使用过的网站，这些青少年的决定是至关重要的。本研究将确定机制，确定青少年定居的决定，其影响的人口调控，在黑尾godwits，迁徙滨鸟。迁徙物种的研究由于个体迁徙的距离很远而变得复杂。godwit系统是此类研究的理想选择，因为在整个范围内定期跟踪大量有标记的个体，而且羽毛中的化学特征可以确定繁殖鸟类的越冬栖息地。了解这些解决方案的决定将使我们能够预测的后果，损失的不同网站的整个范围内为这个物种，并确定在类似的迁徙物种的重要性的关键参数。

项目成果

Overtaking on migration: does longer distance migration always incur a penalty?

• DOI: 10.1111/j.1600-0706.2011.19678.x
• 发表时间: 2012-03-01
• 期刊: OIKOS
• 影响因子: 3.4
• 作者: Alves, Jose A.;Gunnarsson, Tomas G.;Gill, Jennifer A.
• 通讯作者: Gill, Jennifer A.

Sex-biases in distribution and resource use at different spatial scales in a migratory shorebird.

• DOI: 10.1002/ece3.503
• 发表时间: 2013-04
• 期刊: ECOLOGY AND EVOLUTION
• 影响因子: 2.6
• 作者: Alves, Jose A.;Gunnarsson, Tomas G.;Potts, Peter M.;Sutherland, William J.;Gill, Jennifer A.
• 通讯作者: Gill, Jennifer A.