Wald’s Chi-sq tests for terms in the model for probability of biting intra-tussock in ewes.

<p>Wald’s Chi-sq tests for terms in the model for probability of biting intra-tussock in ewes.</p

Partial selectivity levels (mean ± standard error) for inter-tussock stratum by ewes.

<p>The continuous line represents the feeding station to bite scale and the dashed line represents the search path or patch scale. Values >1.0 mean that the inter-tussock was selected more than expected by random encounter.</p

Wald’s Chi-sq tests for terms in the model for probability of biting tussock in heifers.

<p>Wald’s Chi-sq tests for terms in the model for probability of biting tussock in heifers.</p

Probabilities of grazing tussocks (mean and 90% confidence interval) by heifers as a function of treatment (nominal tussock cover at the plot level) and tussock cover in each 1-m² cell grazed (n = 1,132).

<p>The thin dotted line shows the no-selection expectation where probability of grazing tussock equals the proportion of area covered by tussock. Note that lines for 50 and 75% plot-level tussock cover are almost identical. Vertical lines are 90% confidence intervals. Symbols are raw proportions calculated by pooling data across animals, time of day and sessions.</p

Partial selectivity levels (mean ± standard error) for inter-tussock stratum by heifers.

<p>The continuous line represents the feeding station to bite scale and the dashed line represents the search path or patch scale. Values >1.0 mean that the inter-tussock was selected more than expected by random encounter.</p

Wald’s Chi-sq tests for terms in the model for probability of biting tussock in ewes.

<p>Wald’s Chi-sq tests for terms in the model for probability of biting tussock in ewes.</p

F tests for terms in the model of selectivity of ewes as a function of plot-level treatment and scale of selectivity.

<p>F tests for terms in the model of selectivity of ewes as a function of plot-level treatment and scale of selectivity.</p

Probabilities (mean and 90% confidence interval) of grazing intra-tussocks by ewes as a function of treatment (nominal tussock cover at the plot level) and tussock cover in each 1-m² cell grazed (n = 2,217).

<p>The thin dotted line shows the no-selection expectation where probability of grazing tussock equals the proportion of area covered by tussock. Vertical lines are 90% confidence intervals. Symbols are raw proportions calculated by pooling data across animals, time of day and sessions.</p

F tests for terms in the model for sward grazed by ewes.

<p>F tests for terms in the model for sward grazed by ewes.</p

Histograms of tussock cover measured in a 1-m² grid in each of the treatments applied at the whole plot or paddock level (0, 25, 50 and 75% of <i>Eragrostis plana</i> Nees.) Spatial variability in tussock cover resulted in a variety of values observed within each treatment.

<p>Histograms of tussock cover measured in a 1-m² grid in each of the treatments applied at the whole plot or paddock level (0, 25, 50 and 75% of <i>Eragrostis plana</i> Nees.) Spatial variability in tussock cover resulted in a variety of values observed within each treatment.</p