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BIOLOGICAL CONSERVATION Biological Conservation 86 1998 243 255 Predictors of avian and mammalian translocation success reanalysis with phylogenetically independent contrasts C Magdalena Wolf a Theodore Garland Jr b Brad Gri th c y a Departments of Zoology and Wildlife Ecology 430 Lincoln Drive University of Wisconsin Madison WI 53706 1381 USA b Department of Zoology 430 Lincoln Drive University of Wisconsin Madison WI 53706 1381 USA c US National Biological Service 101 12th Avenue Box 15 Fairbanks AK 99701 USA Received 27 November 1996 received in revised form 20 October 1997 accepted 23 November 1997 Abstract We use the phylogenetically based statistical method of independent contrasts to reanalyze the Wolf C M Gri th B Reed C Temple S A 1996 Avian and mammalian translocations update and reanalysis of 1987 survey data Conservation Biology 10 1142 1154 translocation data set for 181 programs involving 17 mammalian and 28 avian species Although still novel in conservation and wildlife biology the incorporation of phylogenetic information into analyses of interspeci c comparative data is widely accepted and routinely used in several elds To facilitate application of independent contrasts we converted the dichotomous success failure dependent variable Wolf et al 1996 Gri th B Scott J M Carpenter J W Reed C 1989 Translocations as a species conservation tool status and strategy Science 245 477 480 into a more descriptive continuous variable with the incorporation of persistence of the translocated population beyond the last release year relative to the species longevity For comparison we present three models nonphylogenetic multiple logistic regression with the dichotomous dependent variable the method used by Wolf et al 1996 and Gri th et al 1989 nonphylogenetic multiple regression with the continuous dependent variable and multiple regression using phylogenetically independent contrasts with the continuous dependent variable Results of the phylogenetically based



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