Scopus记录号: 2-s2.0-85061305393
论文题名: The limits to population density in birds and mammals
作者: Stephens P.A. ; Vieira M.V. ; Willis S.G. ; Carbone C.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2019
卷: 22, 期: 4 起始页码: 654
结束页码: 663
语种: 英语
英文关键词: Body size
; carnivore
; energetics
; herbivore
; macroecology
; minimum viable population size
; population density
; scaling
Scopus关键词: Animalia
; Aves
; Mammalia
英文摘要: We address two fundamental ecological questions: what are the limits to animal population density and what determines those limits? We develop simple alternative models to predict population limits in relation to body mass. A model assuming that within-species area use increases with the square of daily travel distance broadly predicts the scaling of empirical extremes of minimum density across birds and mammals. Consistent with model predictions, the estimated density range for a given mass, ‘population scope’, is greater for birds than for mammals. However, unlike mammals and carnivorous birds, expected broad relationships between body mass and density extremes are not supported by data on herbivorous and omnivorous birds. Our results suggest that simple constraints on mobility and energy use/supply are major determinants of the scaling of density limits, but further understanding of interactions between dietary constraints and density limits are needed to predict future wildlife population responses to anthropogenic threats. © 2019 The Authors Ecology Letters published by CNRS and John Wiley & Sons Ltd. 资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122708
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Conservation Ecology Group, Department of Biosciences, Durham University, South Road, Durham, DH1 3LE, United Kingdom; Departamento de Ecologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Cp 68020, Rio de Janeiro RJ, 21941-902, Brazil; Institute of Zoology, Zoological Society of London, Regent's Park, London, NW1 4RY, United Kingdom
Recommended Citation:
Stephens P.A.,Vieira M.V.,Willis S.G.,et al. The limits to population density in birds and mammals[J]. Ecology Letters,2019-01-01,22(4)