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December 9, 2008; 105 (49)

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Cover image: Movement enables lifeforms of all kinds to seek food, meet mates, escape enemies, and find homes. Even sedentary organisms such as coral and giant sequoia are mobile in early life stages. Researchers in the emerging field of movement ecology combine diverse techniques in the search for underlying principles. See Ran Nathan's introduction to the special feature on pages 19050–19051. Clockwise from top right: African elephant (Loxodonta africana), Green turtle (Chelonia mydas), Thistle (Cirsium spp.), European Jay (Garrulus glandarius), Scytheleaf onion (Allium falcifolium), Glanville fritillary butterfly (Melitaea cinxia), Iberian lynx (Lynx pardinus), and Loggerhead turtle (Caretta caretta). Images courtesy of G. Wittemyer, K. Lohmann, E. Damschen and J. Orrock, R. Schols (The Netherlands), M. Todd (Grants Pass High School, Grants Pass, OR), T. Haahtela (University of Helsinki, Helsinki), A. Sabater (Enfoque10, Seville, Spain), and K. Lohmann, respectively.

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