气候变化领域集成服务门户(CCPortal): Foraging success under uncertainty: search tradeoffs and optimal space use

CCPortal

DOI	10.1111/ele.12660
	Foraging success under uncertainty: search tradeoffs and optimal space use
	Bartumeus F.; Campos D.; Ryu W.S.; Lloret-Cabot R.; Méndez V.; Catalan J.
发表日期	2016
ISSN	1461-023X
EISSN	1461-0248
卷号	19 期号:11
英文摘要	Understanding the structural complexity and the main drivers of animal search behaviour is pivotal to foraging ecology. Yet, the role of uncertainty as a generative mechanism of movement patterns is poorly understood. Novel insights from search theory suggest that organisms should collect and assess new information from the environment by producing complex exploratory strategies. Based on an extension of the first passage time theory, and using simple equations and simulations, we unveil the elementary heuristics behind search behaviour. In particular, we show that normal diffusion is not enough for determining optimal exploratory behaviour but anomalous diffusion is required. Searching organisms go through two critical sequential phases (approach and detection) and experience fundamental search tradeoffs that may limit their encounter rates. Using experimental data, we show that biological search includes elements not fully considered in contemporary physical search theory. In particular, the need to consider search movement as a non-stationary process that brings the organism from one informational state to another. For example, the transition from remaining in an area to departing from it may occur through an exploratory state where cognitive search is challenged. Therefore, a more comprehensive view of foraging ecology requires including current perspectives about movement under uncertainty. © 2016 John Wiley & Sons Ltd/CNRS
英文关键词	Animal movement; composite correlated random walks; foraging ecology; Lévy walks; random walks; search behaviour
学科领域	animal; behavioral response; complexity; foraging behavior; heuristics; movement; random walk method; space use; uncertainty analysis; Animalia; animal; biological model; Caenorhabditis elegans; computer simulation; feeding behavior; motor activity; physiology; time factor; Animals; Caenorhabditis elegans; Computer Simulation; Feeding Behavior; Models, Biological; Motor Activity; Time Factors
语种	英语
scopus关键词	animal; behavioral response; complexity; foraging behavior; heuristics; movement; random walk method; space use; uncertainty analysis; Animalia; animal; biological model; Caenorhabditis elegans; computer simulation; feeding behavior; motor activity; physiology; time factor; Animals; Caenorhabditis elegans; Computer Simulation; Feeding Behavior; Models, Biological; Motor Activity; Time Factors
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/118471
作者单位	Centre d'Estudis Avançats de Blanes (CEAB-CSIC), Cala Sant Francesc 14, Girona, 17300, Spain; CREAF, Cerdanyola del Vallès, Barcelona, 08193, Spain; ICREA, Pg Lluís Companys 23, Barcelona, 08010, Spain; Grup de Física Estadística, Departament de Física, Universitat Autònoma de Barcelona, Barcelona, 08193, Spain; Department of Physics and the Donnelly Centre, University of Toronto, 60 St George St., Toronto, ON M5S1A7, Canada
推荐引用方式 GB/T 7714	Bartumeus F.,Campos D.,Ryu W.S.,et al. Foraging success under uncertainty: search tradeoffs and optimal space use[J],2016,19(11).
APA	Bartumeus F.,Campos D.,Ryu W.S.,Lloret-Cabot R.,Méndez V.,&Catalan J..(2016).Foraging success under uncertainty: search tradeoffs and optimal space use.Ecology Letters,19(11).
MLA	Bartumeus F.,et al."Foraging success under uncertainty: search tradeoffs and optimal space use".Ecology Letters 19.11(2016).