Scale-free foraging by primates emerges from their interaction with a complex environment
Por:
Boyer D., Ramos-Fernández G., Miramontes O., Mateos J.L., Cocho G., Larralde H., Ramos H., Rojas F.
Publicada:
1 ene 2006
Resumen:
Scale-free foraging patterns are widespread among animals. These may be the outcome of an optimal searching strategy to find scarce, randomly distributed resources, but a less explored alternative is that this behaviour may result from the interaction of foraging animals with a particular distribution of resources. We introduce a simple foraging model where individual primates follow mental maps and choose their displacements according to a maximum efficiency criterion, in a spatially disordered environment containing many trees with a heterogeneous size distribution. We show that a particular tree-size frequency distribution induces non-Gaussian movement patterns with multiple spatial scales (Lévy walks). These results are consistent with field observations of tree-size variation and spider monkey (Ateles geoffroyi) foraging patterns. We discuss the consequences that our results may have for the patterns of seed dispersal by foraging primates. © 2006 The Royal Society.
Filiaciones:
Boyer D.:
Departamento de Sistemas Complejos, Instituto de Fisica, Universidad Nacional Autónoma de México, Apartado Postal 20-364, 01000 México DF, Mexico
Ramos-Fernández G.:
Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional, Unidad Oaxaca, Instituto Politécnico Nacional, Calle Hornos 1003, 71230 Oaxaca, Mexico
Miramontes O.:
Departamento de Sistemas Complejos, Instituto de Fisica, Universidad Nacional Autónoma de México, Apartado Postal 20-364, 01000 México DF, Mexico
Mateos J.L.:
Departamento de Sistemas Complejos, Instituto de Fisica, Universidad Nacional Autónoma de México, Apartado Postal 20-364, 01000 México DF, Mexico
Cocho G.:
Departamento de Sistemas Complejos, Instituto de Fisica, Universidad Nacional Autónoma de México, Apartado Postal 20-364, 01000 México DF, Mexico
Larralde H.:
Centro de Ciencias Físicas, Universidad Nacional Autónoma de México, Cuernavaca, 62210 Morelos, Mexico
Ramos H.:
Departamento de Sistemas Complejos, Instituto de Fisica, Universidad Nacional Autónoma de México, Apartado Postal 20-364, 01000 México DF, Mexico
Rojas F.:
Facultad de Ciencias Físico Matemáticas, Universidad Autónoma de Puebla, Av. S. C. Rio Verde, Col. S. Manuel, 72570 Puebla, Mexico
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