Figure Legends
Figure 1 Site locations for sites used to assess the short-term
(site names with the GLAS prefix) and long-term (TH (unfenced) and TV
(fenced) site name prefixes) efficacy of cattle exclusion.
Figure 2 Experimental design
demonstrating how the PERMDISP routine was applied in this study.
PERMDISP tests the hypothesis that dispersion among triangles
(pre-fencing) is greater than dispersion among squares (post-fencing).
The black lines (a) represent an approximation of the
dispersion/z-scores. The barbed wire represents fencing (b).
Figure 3 Measures of dispersions (z scores) between masses of
deposited sediment samples among control and pressure points during the
pre-fencing and post-fencing period.
Figure 4 Mean deposited
sediment levels (± SE) at control and pressure points prior to and
following fencing across all sites. Letters (A and B) identify
significant Treatment effects within a given Fencingperiod. Asterisks (* and **) identify significant Fencing effects
within a given Treatment .
Figure 5 Measures of
dispersions (z scores) among control and pressure macroinvertebrate
samples during the pre-fencing and post-fencing period. Differing
letters highlight where significant differences occur
Figure 6 PCO plots for
macroinvertebrate community structure data (based on Bray-Curtis
dissimilarity matrices) for Site 1-8 (labelled a-h).PERMANOVA analysis
of macroinvertebrate community abundance (structure) highlighted a
significant Fencing/Treatment x Site interaction
(F21,157=4.80, P=0.0002).
Figure 7 Total richness values (± SE) at control and pressure
points during the pre-fencing and post-fencing period Significant
differences between levels of the Treatment factor are designated by
differing letters (A and B), while differences between levels of the
Fencing factor are designated by differing numbers of asterisks’ (* and
**).
Figure 8 EPT richness values
(± SE) at control and pressure points during the pre-fencing and
post-fencing period. Significant differences between levels of the
Treatment factor are designated by differing letters (A and B), while
differences between levels of the Fencing factor are designated
by differing numbers of asterisks’ (* and **).
Figure 9 PCO plot of
macroinvertebrate community structure data showing greater separation of
pre-fencing control and pressure samples compared to post-fencing
control and pressure samples.
Figure 10. Values of %E
abundance and EPT richness for samples in the fenced (a and c) and
control catchments (b and d).