Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.2023170118 |
Global abundance estimates for 9,700 bird species | |
Corey T. Callaghan; Shinichi Nakagawa; William K. Cornwell | |
2021-05-25 | |
发表期刊 | Proceedings of the National Academy of Sciences |
出版年 | 2021 |
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. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/328772 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Corey T. Callaghan,Shinichi Nakagawa,William K. Cornwell. Global abundance estimates for 9,700 bird species[J]. Proceedings of the National Academy of Sciences,2021. |
APA | Corey T. Callaghan,Shinichi Nakagawa,&William K. Cornwell.(2021).Global abundance estimates for 9,700 bird species.Proceedings of the National Academy of Sciences. |
MLA | Corey T. Callaghan,et al."Global abundance estimates for 9,700 bird species".Proceedings of the National Academy of Sciences (2021). |
条目包含的文件 | 条目无相关文件。 |
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