16 research outputs found

    Resource metrics used to assess resource use of white-tailed deer (<i>Odocoileus virginianus</i>) fawns, Upper Peninsula of Michigan, USA, 2009–2011.

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    <p>Resource metrics used to assess resource use of white-tailed deer (<i>Odocoileus virginianus</i>) fawns, Upper Peninsula of Michigan, USA, 2009–2011.</p

    Generalized linear mixed-effect models assessing third order resource selection of white-tailed deer fawns (≤14 weeks of age; <i>Odocoileus virginianus</i>; <i>n</i> = 129) during the post-partum period (14 May–31 Aug), Upper Peninsula of Michigan, USA, 2009–2011.

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    <p>Models used radiolocations (1; <i>n</i> = 2713) and random points (0) as the binomial response variable and individual resources were used as a fixed effect with individual fawn and year as random effects on the intercept. Model prediction error was estimated using <i>k</i>-fold cross validation using 5 folds.</p

    Location (black polygon) of white-tailed deer (<i>Odocoileus virginianus</i>) resource use and predation risk study, Upper Peninsula of Michigan, USA, 2009–2011.

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    <p>Location (black polygon) of white-tailed deer (<i>Odocoileus virginianus</i>) resource use and predation risk study, Upper Peninsula of Michigan, USA, 2009–2011.</p

    Cox-proportional hazards mixed-effects models assessing the effects of resource use, predation risk, birth body mass, winter severity, and vegetation hiding cover on the daily survival of white-tailed deer fawns (≤14 weeks of age; <i>Odocoileus virginianus</i>; <i>n</i> = 129) during the post-partum period (14 May–31 Aug), Upper Peninsula of Michigan, USA, 2009–2011.

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    <p>Models included individual fawn and year as random effects on the intercept. Models presented with standardized parameter estimates, standard errors (SE), probability values, degrees of freedom (<i>df</i>), and estimated hazard ratio parameter probability values, and percent integrated deviance explained indicating the reduction in the log-likelihood from the null model. Percent deviance explained was used to rank models. Model fit was assessed using a Chi-square test of log-likelihood of a given model (Log-likelihood <i>X</i><sup>2</sup>) compared to the null model.</p

    Comparison of best performing models explaining trends in wolf depredation on bear-hunting dogs in the Wisconsin and Michigan, USA, by Akaike’s information criterion & weight.

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    *<p>Encounter = the ratio of bear hunting permits sold per wolf (see methods). Numbers in parenthesis under explanatory factors are <i>p</i>-values for the five best-performing models.</p>a<p>AIC<sub>C</sub> is Akaike’s information criterion, corrected for small sample size.</p>b<p>ΔAIC<sub>C</sub> is AIC<sub>C</sub> for the model of interest minus the smallest AIC<sub>C</sub> for the set of models being considered. We only considered models with ΔAIC<sub>C</sub> ≤2.</p>c<p>W is the Akaike’s weight of each model. The ratio of one model’s weight to another estimates how many times more support the data provide for that model over the other.</p

    Wolf conflict and the duration of bear-baiting in the upper Great Lakes region, USA.

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    <p>Predicted probability of a wolf depredation on bear-hunting dogs (<i>y-axis</i>) versus the number of days since training with bait began (<i>x-axis</i>) in Wisconsin (<i>upper line</i>) and Michigan (<i>lower line</i>). Each point represents a day since training with bait began in Wisconsin (<i>closed symbols</i>) and Michigan (<i>open symbols</i>). Note that open symbols for Michigan are offset from (0) and (1) probability so as to not overlap symbols for Wisconsin. The odds of a depredation event occurring in Wisconsin were 3.57× greater than the odds in Michigan; a relative depredation risk 2.12–7.22× greater in Wisconsin.</p
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