气候变化领域集成服务门户(CCPortal): Global abundance estimates for 9,700 bird species

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DOI	10.1073/pnas.2023170118
	Global abundance estimates for 9,700 bird species
	Callaghan C.T.; Nakagawa S.; Cornwell W.K.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:21
英文摘要	Quantifying the abundance of species is essential to ecology, evolution, and conservation. The distribution of species abundances is fundamental to numerous longstanding questions in ecology, yet the empirical pattern at the global scale remains unresolved, with a few species’ abundance well known but most poorly characterized. In large part because of heterogeneous data, few methods exist that can scale up to all species across the globe. Here, we integrate data from a suite of well-studied species with a global dataset of bird occurrences throughout the world—for 9,700 species (∼92% of all extant species)—and use missing data theory to estimate species-specific abundances with associated uncertainty. We find strong evidence that the distribution of species abundances is log left skewed: there are many rare species and comparatively few common species. By aggregating the species-level estimates, we find that there are ∼50 billion individual birds in the world at present. The global-scale abundance estimates that we provide will allow for a line of inquiry into the structure of abundance across biogeographic realms and feeding guilds as well as the consequences of life history (e.g., body size, range size) on population dynamics. Importantly, our method is repeatable and scalable: as data quantity and quality increase, our accuracy in tracking temporal changes in global biodiversity will increase. Moreover, we provide the methodological blueprint for quantifying species-specific abundance, along with uncertainty, for any organism in the world. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	abundance; data integration; Global biodiversity; rarity; SADs
语种	英语
scopus关键词	article; biodiversity; biogeographic region; bird; body size; data integration; feeding; life history; nonhuman; population abundance; population dynamics; rare species; theoretical study; uncertainty
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238913
作者单位	Centre for Ecosystem Science, School of Biological, Earth and Environmental Sciences, UNSW Sydney, Sydney, NSW 2052, Australia; Ecology &Evolution Research Centre, School of Biological, Earth and Environmental Sciences, UNSW Sydney, Sydney, NSW 2052, Australia
推荐引用方式 GB/T 7714	Callaghan C.T.,Nakagawa S.,Cornwell W.K.. Global abundance estimates for 9,700 bird species[J],2021,118(21).
APA	Callaghan C.T.,Nakagawa S.,&Cornwell W.K..(2021).Global abundance estimates for 9,700 bird species.Proceedings of the National Academy of Sciences of the United States of America,118(21).
MLA	Callaghan C.T.,et al."Global abundance estimates for 9,700 bird species".Proceedings of the National Academy of Sciences of the United States of America 118.21(2021).