Factors affecting ground-nest predation.

Results of the Generalized Linear Mixed Model explaining the variation in the probability of artificial ground nests (N = 120) being depredated in relation to the distance to ungulate feeding sites (m, log-transformed) and the number of days elapsed since nest deployment (6 and 15 days). The nest line at feeding and control sites (N = 12) nested in the area (N = 6) were included as random factors. Model fitted using a binomial error distribution and a logit link function (package lme4, R version 3.0.2). Only significant effects were retained (p<0.05). Estimates of 95% confidence intervals (CI) are based on bootstrap with 1000 simulations.
doi:10.1371/journal.pone.0090740.t001