Recursos Naturales >
Centro de Estudios Avanzados de Blanes (CEAB) >
(CEAB) Artículos >
Open Access item How Landscape Heterogeneity Frames Optimal Diffusivity in Searching Processes
|Authors:||Raposo, E. P.|
da Luz, M. G. E.
Ribeiro-Neto, P. J.
Souza, T. A.
Viswanathan, G. M.
|Publisher:||Public Library of Science|
|Citation:||PLoS Comput Biol 7(11) : e1002233 (2011)|
|Abstract:||Understanding how animals search for food is crucial for
animal ecology. Although much has been learned about
the main aspects of the so-called foraging problem, some
important questions still remain unanswered. In this work
we address the issue of the relevance of heterogeneity in
the resources distribution to efficient animal foraging
behavior. Our results unveil the key mechanism coupling
landscape heterogeneity dynamics with optimal search
diffusivity. Indeed, although the effect of (global) resource
density on animal foraging behavior is well documented,
much less has been known about how spatiotemporal
landscape heterogeneity affects the efficiency of encounter
interactions by foraging organisms. In this sense, we
propose a new empirically testable theoretical prediction
on the dynamics (e.g. diffusion exponent) of foraging
organisms in heterogeneous environments. We also show
that the conditions in which Le´vy strategies are optimal
are much broader than previously considered.|
|Description:||8 páginas, 4 figuras.|
|Publisher version (URL):||http://dx.doi.org/10.1371/journal.pcbi.1002233|
|E-ISSNmetadata.dc.identifier.doi = DOI:||1553-7358|
|Appears in Collections:||(CEAB) Artículos|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.