对极端气候事件和环境变异的发展阶段特定的反应在巨头巢中
Devi Satarkar1, David López-Idiáquez1, Irem Sepil1
1Edward Grey Institute of Field Ornithology, Department of Biology, University of Oxford, Oxford, UK.
Global change biology
|March 11, 2026
概括
气候变化在各个发育阶段对野生巨乳 (Parus major) 的影响不同. 极端的寒冷事件会伤害幼,而暴雨会影响较老的幼,极端的情况会显著减少幼的群体.
科学领域:
- 生态学和进化生物学.
- 气候变化生物学
- 鸟类种群动态 鸟类种群动态
背景情况:
- 气候变化正在改变平均条件并增加气候变化.
- 极端气候事件 (ECE) 对自然群体的影响比平均变化了解得更少.
- 野生鸟类种群面临着不可预测的天气模式带来的挑战.
研究的目的:
- 为了研究野生巨 (Parus大) 发育阶段对ECEs的不同敏感性.
- 量化ECE单独和与平均条件相结合对幼鸟质量和存活率的影响.
- 探索出生时间和表型可塑性在减轻气候变化影响中的作用.
主要方法:
- 利用了超过83,000个巨乳的60年生命史数据.
- 分析了历史的每日气候记录以确定ECEs.
- 相关的气候数据与个体鸟类的发展和生存指标.
主要成果:
- 化的大乳头对ECEs表现出特定阶段的敏感性;早期的极端寒冷减少了新生的质量,而晚些时候的降雨事件具有更大的影响.
- 在早期发育过程中,极端高温和大雨的结合可以使新生的飞行质量减少高达27%.
- 暴露于炎热的ECE的季后子会飞出明显更轻的幼 (最多要轻35%).
结论:
- 对ECE的发育阶段特定反应对于了解气候变化下的鸟类种群动态至关重要.
- 现型可塑性,例如较早的产卵日期,可能会带来一些好处,但也会增加对某些极端的敏感性.
- 越来越多的ECE频率和严重程度对野生鸟种群构成重大威胁,需要进一步研究适应性策略.
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