Seasonality Structures Avian Functional Diversity and Niche Packing Across North America

IF 7.6 1区 环境科学与生态学 Q1 ECOLOGY
Ecology Letters Pub Date : 2024-10-25 DOI:10.1111/ele.14521
Spencer R. Keyser, Jonathan N. Pauli, Daniel Fink, Volker C. Radeloff, Alex L. Pigot, Benjamin Zuckerberg
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引用次数: 0

Abstract

Assemblages in seasonal ecosystems undergo striking changes in species composition and diversity across the annual cycle. Despite a long-standing recognition that seasonality structures biogeographic gradients in taxonomic diversity (e.g., species richness), our understanding of how seasonality structures other aspects of biodiversity (e.g., functional diversity) has lagged. Integrating seasonal species distributions with comprehensive data on key morphological traits for bird assemblages across North America, we find that seasonal turnover in functional diversity increases with the magnitude and predictability of seasonality. Furthermore, seasonal increases in bird species richness led to a denser packing of functional trait space, but functional expansion was important, especially in regions with higher seasonality. Our results suggest that the magnitude and predictability of seasonality and total productivity can explain the geography of changes in functional diversity with broader implications for understanding species redistribution, community assembly and ecosystem functioning.

Abstract Image

北美洲鸟类功能多样性的季节性结构和利基包装
在季节性生态系统中,物种组成和多样性在整个年周期都会发生显著变化。尽管人们早已认识到季节性会造成生物地理学上分类多样性(如物种丰富度)的梯度,但我们对季节性如何造成生物多样性其他方面(如功能多样性)的认识却相对滞后。通过将季节性物种分布与北美洲鸟类群落关键形态特征的综合数据相结合,我们发现功能多样性的季节性更替随着季节性的幅度和可预测性而增加。此外,鸟类物种丰富度的季节性增加导致了功能特征空间的密集包装,但功能扩展也很重要,尤其是在季节性较强的地区。我们的研究结果表明,季节性和总生产力的幅度和可预测性可以解释功能多样性的地理变化,对理解物种再分布、群落组合和生态系统功能具有更广泛的意义。
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来源期刊
Ecology Letters
Ecology Letters 环境科学-生态学
CiteScore
17.60
自引率
3.40%
发文量
201
审稿时长
1.8 months
期刊介绍: Ecology Letters serves as a platform for the rapid publication of innovative research in ecology. It considers manuscripts across all taxa, biomes, and geographic regions, prioritizing papers that investigate clearly stated hypotheses. The journal publishes concise papers of high originality and general interest, contributing to new developments in ecology. Purely descriptive papers and those that only confirm or extend previous results are discouraged.
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