North American bird declines are greatest where species are most abundant

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2025-05-01

Alison Johnston, Amanda D. Rodewald, Matt Strimas-Mackey, Tom Auer, Wesley M. Hochachka, Andrew N. Stillman, Courtney L. Davis, Viviana Ruiz-Gutierrez, Adriaan M. Dokter, Eliot T. Miller, Orin Robinson, Shawn Ligocki, Lauren Oldham Jaromczyk, Cynthia Crowley, Christopher L. Wood, Daniel Fink

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引用次数: 0

Abstract

Efforts to address declines of North American birds have been constrained by limited availability of fine-scale information about population change. By using participatory science data from eBird, we estimated continental population change and relative abundance at 27-kilometer resolution for 495 bird species from 2007 to 2021. Results revealed high and previously undetected spatial heterogeneity in trends; although 75% of species were declining, 97% of species showed separate areas of significantly increasing and decreasing populations. Populations tended to decline most steeply in strongholds where species were most abundant, yet they fared better where species were least abundant. These high-resolution trends improve our ability to understand population dynamics, prioritize recovery efforts, and guide conservation at a time when action is urgently needed.

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在物种最丰富的北美地区，鸟类数量减少最多

解决北美鸟类数量下降问题的努力一直受到有关种群变化的精细信息有限的限制。利用eBird的参与式科学数据，我们估算了2007年至2021年495种鸟类在27公里分辨率下的大陆种群变化和相对丰度。结果显示，趋势的空间异质性很高，以前未被发现；尽管75%的物种数量在减少，但97%的物种数量在显著增加和显著减少的区域之间存在差异。在物种最丰富的据点，种群数量往往会急剧下降，但在物种最不丰富的地方，它们的生存状况会更好。这些高分辨率的趋势提高了我们了解种群动态的能力，优先考虑恢复工作，并在迫切需要采取行动时指导保护。

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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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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