Appendix E. Relative amounts of support provided by the data for local and landscape models of occurrence (A) and larval density when present (B) for eight amphibian species.
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| FIG.
E1. Relative amounts
of support provided by the data for local and landscape models of occurrence
(A) and larval density when present (B) for eight amphibian species. Model
weight is the Akaike weight averaged across all models that included variables
of that category. Local abiotic covariates included pond permanence, vegetation
cover, and canopy cover. Local biotic covariates included the densities
of fish, other predators, and potentially competing amphibian larvae. Landscape
covariates were axes derived from a PCA of proportional land cover by forest
and urban area, and densities of roads and ponds (Appendix
B). For most species, local covariates influenced occurrence and density
more strongly than did landscape covariates. |