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不同颜色的表型使用冬季地面微型息地影响长途迁徙鸟类的回归率

Tiia Kärkkäinen^1,2, Keith A Hobson^3,4, Kevin J Kardynal⁴

¹Department of Biology, University of Turku, Turku, Finland. tmakark@gmail.com.

|May 9, 2024

概括

不同颜色的雄性鸟使用不同的非繁殖息地,影响它们的生存. 棕色雄性更喜欢干燥的地区,在气候变化中面临更高的风险.

科学领域:

生态生态学生态生态学
鸟类学鸟类学是一门学科.
保护生物学保护生物学

背景情况:

迁徙鸟种群面临着全球的下降,受非繁殖场条件的影响.
现型差异,如羽毛颜色,可能会影响鸟类与环境的相互作用.
了解不同表型的息地使用对于有效的保护至关重要.

研究的目的:

为了调查不同的羽毛表型是否使用不同的非繁殖息地.
为了确定这些表型是否对非繁殖场的条件有不同的反应.
评估对个人健康和人口动态的影响.

主要方法:

收集的冬季生长的羽毛从雄性 (Ficedula hypoleuca) 与不同的羽毛颜色.
分析了羽毛中的稳定同位素比 (δ13C, δ15N, δ2H) 作为非繁殖息地条件和来源的代理.
使用归属原产地分析来推断非繁殖场的地理起源.

主要成果:

根据羽毛 δ2H 值,发现棕色雄性与黑色雄性相比居住在更干燥的非繁殖区域.
稳定同位素数据 (δ13C, δ15N) 显示出高可重复性,这表明年年间的位置忠实性.
黑色的雄性在干旱年后返回繁殖场的比率更高,而棕色的雄性在潮湿年后返回的比率更高.

结论:

脚捕中不同的表型暴露在不同的非繁殖环境中.
这些息地差异可能会对个体的生存有不同的影响,特别是在气候变化下.
棕色表型男性可能因气候变化而面临更高的风险,影响人口动态.

关键词:

碳-13是什么意思颜色颜色颜色颜色二是一种.迁移性的连接性迁移性的连接性 -15是一种-15.羽毛衣是一种羽毛.回报概率回报的可能性.稳定的同位素是稳定的.

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