Predictors of per capita uptake (δ15N enrichment).

A summary of marginal test and ‘best’ model results for (A) Austrovenus site and (B) Macomona site for the per capita uptake by each species (rows) as explained by species and functional group (FG) density and diversity indices (see Tables 1 and 2 for definitions of abbreviations). Numbers are the proportion of variance explained by single predictors (marginal tests) and the (+) or (-) denote direction of significant relationships. Values in bold denote parameters selected by AICC to be included in the ‘best model’ and the R2 is the total cumulative variance explained by the ‘best model’. Non-significant variables or variables not included in the ‘best model’ are not shown. na = non-applicable predictor. Significant relationships are shown in Fig 5.