植物特征决定食草鸟的种子保留时间:对种子远距离传播的影响

IF 4.6 1区 环境科学与生态学 Q1 ECOLOGY Functional Ecology Pub Date : 2024-09-01 DOI:10.1111/1365-2435.14642
Claudio A. Bracho-Estévanez, Mariano Cuadrado, Iñigo Sánchez, Alejandro Onrubia, Juan P. González-Varo
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摘要

食俭动物的种子传播是植物种群和群落的一个关键过程。食俭动物吃掉果实后,种子会暂时留在它们的内脏中,直到种子沉积下来。因此,有关滞留时间的信息对于估算种子散播距离至关重要。尽管众所周知,种子滞留时间受食果动物体型的影响,但对于植物物种性状(如种子大小和果肉含量)的影响还存在重要的知识空白。在此,我们全面探讨了植物性状是否以及哪些性状会影响俭食鸟类的留种时间。一方面,我们进行了第一组实验,评估单一鸟类散布的31种植物种子滞留时间的变化;第二组实验评估了五种食俭鸟类散布的五种植物种子滞留时间的变化。另一方面,我们进行了文献综述,检索了 231 种相互作用的保留时间,涉及 9 个不同鸟纲的 155 种植物和 55 种鸟类。在本研究涉及的三个层面上,种子大小对保留时间都有负面影响:种子越大,保留时间越短。种子大小对单个鸟类物种的影响较大,对五种雀形目鸟类的影响居中,而对汇编中的所有食草鸟类的影响较小。值得注意的是,在雀形目鸟类中,种子大小对保留时间的影响与食俭鸟类体型的影响相当。我们分析了果肉含量对单一鸟类物种的影响,但这些影响缺乏预测能力。重要的是,种子大小的影响是间接的,并受种子排出类型(消化处理)的影响:鸟类通常排出较小的种子,而反刍较大的种子。我们提供了全面的证据,证明滞留时间与植物性状以及食草动物对这些性状的反应,特别是种子大小和种子排出类型的反应有内在联系。因此,我们的研究揭示了植物远距离扩散能力的种间变异来源。此外,我们还对基于性状估计平均滞留时间和种子散播距离的模型提供了方法上的改进。在期刊博客上免费阅读本文的通俗摘要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Plant traits determine seed retention times in frugivorous birds: Implications for long-distance seed dispersal

Read the free Plain Language Summary for this article on the Journal blog.

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来源期刊
Functional Ecology
Functional Ecology 环境科学-生态学
CiteScore
9.00
自引率
1.90%
发文量
243
审稿时长
4 months
期刊介绍: Functional Ecology publishes high-impact papers that enable a mechanistic understanding of ecological pattern and process from the organismic to the ecosystem scale. Because of the multifaceted nature of this challenge, papers can be based on a wide range of approaches. Thus, manuscripts may vary from physiological, genetics, life-history, and behavioural perspectives for organismal studies to community and biogeochemical studies when the goal is to understand ecosystem and larger scale ecological phenomena. We believe that the diverse nature of our journal is a strength, not a weakness, and we are open-minded about the variety of data, research approaches and types of studies that we publish. Certain key areas will continue to be emphasized: studies that integrate genomics with ecology, studies that examine how key aspects of physiology (e.g., stress) impact the ecology of animals and plants, or vice versa, and how evolution shapes interactions among function and ecological traits. Ecology has increasingly moved towards the realization that organismal traits and activities are vital for understanding community dynamics and ecosystem processes, particularly in response to the rapid global changes occurring in earth’s environment, and Functional Ecology aims to publish such integrative papers.
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