How many birds are there?

被引：19
|
作者：
Gaston, KJ
Blackburn, TM
机构：
[1] Dept. of Animal and Plant Sciences, University of Sheffield
[2] NERC Centre for Population Biology, Imperial College, Ascot, Berkshire SL5 7PY, Silwood Park
来源：
BIODIVERSITY AND CONSERVATION | 1997年 / 6卷 / 04期
关键词：
biodiversity; birds; populations;
D O I：
10.1023/A:1018341530497
中图分类号：
X176 [生物多样性保护];
学科分类号：
090705 ;
摘要：
Attempts to assess the magnitude of global biodiversity have focused on estimating species richness. However, this is but one component of biodiversity, and others, such as numbers of individuals or biomass, are at least as poorly known and just as important to quantify. Here, we use a variety of methods to estimate the global number of individuals for a single taxon, birds. The different methods yield surprisingly consistent estimates of a global bird population of between 200 billion and 400 billion individuals (1 billion = 10(9)). We discuss some of the implications of this figure.
引用
收藏
页码：615 / 625
页数：11
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