气候变化领域集成服务门户(CCPortal): Towards a unified framework for connectivity that disentangles movement and mortality in space and time

CCPortal

DOI	10.1111/ele.13333
	Towards a unified framework for connectivity that disentangles movement and mortality in space and time
	Fletcher R.J.; Jr.; Sefair J.A.; Wang C.; Poli C.L.; Smith T.A.H.; Bruna E.M.; Holt R.D.; Barfield M.; Marx A.J.; Acevedo M.A.
发表日期	2019
ISSN	1461023X
卷号	22 期号:10
英文摘要	Predicting connectivity, or how landscapes alter movement, is essential for understanding the scope for species persistence with environmental change. Although it is well known that movement is risky, connectivity modelling often conflates behavioural responses to the matrix through which animals disperse with mortality risk. We derive new connectivity models using random walk theory, based on the concept of spatial absorbing Markov chains. These models decompose the role of matrix on movement behaviour and mortality risk, can incorporate species distribution to predict the amount of flow, and provide both short- and long-term analytical solutions for multiple connectivity metrics. We validate the framework using data on movement of an insect herbivore in 15 experimental landscapes. Our results demonstrate that disentangling the roles of movement behaviour and mortality risk is fundamental to accurately interpreting landscape connectivity, and that spatial absorbing Markov chains provide a generalisable and powerful framework with which to do so. © 2019 John Wiley & Sons Ltd/CNRS
英文关键词	Circuit theory; dispersal; fragmentation; habitat loss; least cost; Markov chain; matrix effects; networks; random walk
语种	英语
scopus关键词	connectivity; habitat fragmentation; habitat loss; herbivore; landscape change; Markov chain; mortality risk; trade-off; Animalia; Hexapoda; animal; animal dispersal; ecosystem; Markov chain; mortality; movement (physiology); spatiotemporal analysis; Animal Distribution; Animals; Ecosystem; Markov Chains; Mortality; Movement; Spatio-Temporal Analysis
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/121035
作者单位	Department of Wildlife Ecology and Conservation, University of Florida, PO Box 110430, 110 Newins-Ziegler Hall, Gainesville, FL 32611-0430, United States; School of Computing, Informatics, and Decision Systems Engineering, Arizona State University, Tempe, AZ, United States; Center for Latin American Studies, University of Florida, PO Box 115530, 319 Grinter Hall, Gainesville, FL 32611-5530, United States; Department of Biology, University of Florida, PO Box 118525, 111 Bartram Hall, Gainesville, FL 32611-8525, United States
推荐引用方式 GB/T 7714	Fletcher R.J.,Jr.,Sefair J.A.,et al. Towards a unified framework for connectivity that disentangles movement and mortality in space and time[J],2019,22(10).
APA	Fletcher R.J..,Jr..,Sefair J.A..,Wang C..,Poli C.L..,...&Acevedo M.A..(2019).Towards a unified framework for connectivity that disentangles movement and mortality in space and time.Ecology Letters,22(10).
MLA	Fletcher R.J.,et al."Towards a unified framework for connectivity that disentangles movement and mortality in space and time".Ecology Letters 22.10(2019).