Palatability mapping: A koala's eye view of spatial variation in habitat quality

Ben D. Moore, Ivan R. Lawler, Ian R. Wallis, Colin M. Beale, William J. Foley

    Research output: Contribution to journalArticlepeer-review

    98 Citations (Scopus)

    Abstract

    Ecologists trying to understand the value of habitat to animals must first describe the value of resources contained in the habitat to animals and, second, they must describe spatial variation in resource quality at a resolution relevant to individual animal foraging. We addressed these issues in a study of koalas (Phascolarctos cinereus) in a Eucalyptus woodland. We measured beneficial and deterrent chemical characteristics as well as the palatability of trees using a near-infrared spectroscopic model based on direct feeding experiments. Tree use by koalas was influenced by tree size and foliar quality but was also context-dependent: trees were more likely to be visited if they were surrounded by small, unpalatable trees or by large, palatable trees. Spatial autocorrelation analysis and several mapping approaches demonstrated that foliar quality is spatially structured in the woodland at a scale relevant to foraging decisions by koalas and that the spatial structure is an important component of habitat quality.

    Original languageEnglish
    Pages (from-to)3165-3176
    Number of pages12
    JournalEcology
    Volume91
    Issue number11
    DOIs
    Publication statusPublished - Nov 2010

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