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Lévy Walks Evolve Through Interaction Between Movement and Environmental Complexity

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Science  24 Jun 2011:
Vol. 332, Issue 6037, pp. 1551-1553
DOI: 10.1126/science.1201187

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  • Response to F. van Langevelde et al.'s E-Letter

    F. van Langevelde et al. argue that the Lévy walks found in nature are not innate search strategies but rather emergent properties of the interplay between animal movement and environmental complexity. Their line of reasoning is that steps become truncated whenever an animal finds a target resource. Hence, they claim that the scaling exponent μ of the truncated Lévy walk that we observed in mussel movements should be l...

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    Competing Interests: None declared.
  • Emergent Properties of the Lévy Walk Are Not Adaptive Strategies

    M. de Jager et al.'s fascinating study on the interaction between animal movement and habitat complexity demonstrates that mussels move from random distributions to self-organized mussel beds ("Lévy walks evolve through interaction between movement and environmental complexity," Reports, 24 June 2011, p. 1551). Mussel movements show properties of Lévy walks with the characteristic μ≈ 2, which is the most efficient ran...

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    Competing Interests: None declared.