气候变化领域集成服务门户(CCPortal): High mortality and enhanced recovery: modelling the countervailing effects of disturbance on population dynamics

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DOI	10.1111/ele.12866
	High mortality and enhanced recovery: modelling the countervailing effects of disturbance on population dynamics
	McMullen L.E.; De Leenheer P.; Tonkin J.D.; Lytle D.A.
发表日期	2017
ISSN	1461-023X
EISSN	1461-0248
卷号	20 期号:12
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
英文关键词	Disturbance ecology; invertebrate; population dynamics; resilience; resistance
学科领域	Anisoptera (dragonflies); Ephemeroptera; Hexapoda; Invertebrata; Ostracoda; animal; ecosystem; Ephemeroptera; fire; Odonata; population dynamics; tree; Animals; Ecosystem; Ephemeroptera; Fires; Odonata; Population Dynamics; Trees
语种	英语
scopus关键词	Anisoptera (dragonflies); Ephemeroptera; Hexapoda; Invertebrata; Ostracoda; animal; ecosystem; Ephemeroptera; fire; Odonata; population dynamics; tree; Animals; Ecosystem; Ephemeroptera; Fires; Odonata; Population Dynamics; Trees
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/118298
作者单位	Department of Integrative Biology, Oregon State University, 3029 Cordley Hall, Corvallis, OR 97331, United States; Department of Mathematics, Oregon State University, 368 Kidder Hall, Corvallis, OR 97331, United States
推荐引用方式 GB/T 7714	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],2017,20(12).
APA	McMullen L.E.,De Leenheer P.,Tonkin J.D.,&Lytle D.A..(2017).High mortality and enhanced recovery: modelling the countervailing effects of disturbance on population dynamics.Ecology Letters,20(12).
MLA	McMullen L.E.,et al."High mortality and enhanced recovery: modelling the countervailing effects of disturbance on population dynamics".Ecology Letters 20.12(2017).