DOI: 10.1111/ele.12866
Scopus记录号: 2-s2.0-85033217995
论文题名: High mortality and enhanced recovery: modelling the countervailing effects of disturbance on population dynamics
作者: McMullen L.E. ; De Leenheer P. ; Tonkin J.D. ; Lytle D.A.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2017
卷: 20, 期: 12 起始页码: 1566
结束页码: 1575
语种: 英语
英文关键词: Disturbance ecology
; invertebrate
; population dynamics
; resilience
; resistance
Scopus关键词: Anisoptera (dragonflies)
; Ephemeroptera
; Hexapoda
; Invertebrata
; Ostracoda
英文摘要: Disturbances cause high mortality in populations while simultaneously enhancing population growth by improving habitats. These countervailing effects make it difficult to predict population dynamics following disturbance events. To address this challenge, we derived a novel form of the logistic growth equation that permits time-varying carrying capacity and growth rate. We combined this equation with concepts drawn from disturbance ecology to create a general model for population dynamics in disturbance-prone systems. A river flooding example using three insect species (a fast life-cycle mayfly, a slow life-cycle dragonfly and an ostracod) found optimal tradeoffs between disturbance frequency vs. magnitude and a close fit to empirical data in 62% of cases. A savanna fire analysis identified fire frequencies of 3–4 years that maximised population size of a perennial grass. The model shows promise for predicting population dynamics after multiple disturbance events and for management of river flows and fire regimes. © 2017 John Wiley & Sons Ltd/CNRS Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107538
Appears in Collections: 气候减缓与适应
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作者单位: Department of Integrative Biology, Oregon State University, 3029 Cordley Hall, Corvallis, OR, United States; Department of Mathematics, Oregon State University, 368 Kidder Hall, Corvallis, OR, United States
Recommended Citation:
McMullen L.E.,De Leenheer P.,Tonkin J.D.,et al. High mortality and enhanced recovery: modelling the countervailing effects of disturbance on population dynamics[J]. Ecology Letters,2017-01-01,20(12)