Dynamic environments generate geographic fluctuations in population structure of an inland shorebird

IF 2.7 3区 环境科学与生态学 Q2 ECOLOGY
Ecosphere Pub Date : 2025-06-22 DOI:10.1002/ecs2.70312
Andrea Contina, Scott W. Yanco, Allison K. Pierce, Hannah B. Vander Zanden, Craig A. Stricker, Gabriel J. Bowen, Michael B. Wunder
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引用次数: 0

Abstract

Species distributions depend on fine-scale ecological processes and population growth trajectories and are influenced by climate and weather changes. However, the characterization of inter-population dynamics underlying the geographic distributions of migratory organisms remains challenging. We adopted a stable isotope approach to investigate the dynamic population geography of a terrestrial migratory bird across multiple generations. We found that the age-specific geographic source of Mountain Plovers sampled during winter shifted over four years across a latitudinal gradient. Moreover, our results show that differential effects of climate on the probability of occurrence at the wintering ground could be a driver of population turnover in a migratory species adapted to extreme environmental stochasticity (i.e., drought occurrence). We propose a framework for the identification of spatial and temporal climate and weather components and respective effects on population composition and recruitment into migratory wintering populations. Our approach is useful to reveal population compositional shifts through hydrogen stable isotope analysis while accounting for cumulative drought effects.

Abstract Image

动态环境导致内陆滨鸟种群结构的地理波动
物种分布依赖于精细尺度的生态过程和种群增长轨迹,并受气候和天气变化的影响。然而,迁移生物地理分布背后的种群间动态特征仍然具有挑战性。采用稳定同位素方法研究了陆生候鸟多代种群动态地理特征。我们发现,在冬季取样的山鸻的特定年龄地理来源在四年的时间里在纬度梯度上发生了变化。此外,我们的研究结果表明,气候对越冬地发生概率的差异效应可能是适应极端环境随机性(即干旱发生)的迁徙物种种群更替的驱动因素。我们提出了一个识别时空气候和天气成分及其对种群组成和迁移越冬种群招募的影响的框架。我们的方法有助于通过氢稳定同位素分析揭示种群组成变化,同时考虑累积干旱效应。
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来源期刊
Ecosphere
Ecosphere ECOLOGY-
CiteScore
4.70
自引率
3.70%
发文量
378
审稿时长
15 weeks
期刊介绍: The scope of Ecosphere is as broad as the science of ecology itself. The journal welcomes submissions from all sub-disciplines of ecological science, as well as interdisciplinary studies relating to ecology. The journal''s goal is to provide a rapid-publication, online-only, open-access alternative to ESA''s other journals, while maintaining the rigorous standards of peer review for which ESA publications are renowned.
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