Figure 1.
Relative diver effects – fixed distance and immediate return.
Relative diver effects on estimated reef fish densities comparing counts over a fixed distance 50 m transect and counts along the tape immediately after deployment. Values indicate the proportional decrease in abundance; asterisks represent significant differences using a Bonferroni corrected alpha-value (p<0.006). The parrotfishes formerly in the family Scaridae are now a distinct lineage within in Labridae [56].
Table 1.
Paired t-tests – fixed distance and immediate return.
Figure 2.
Relative diver effects – fixed distance and 5 minute waiting period.
Relative diver effects on estimated reef fish densities comparing counts over a fixed distance 50 m transect and counts after a 5 minute waiting period. Values indicate the proportional decrease in abundance, asterisks represent significant differences using a Bonferroni corrected alpha-value (p<0.006).
Table 2.
Paired t-tests – fixed distance and 5 minute waiting period.
Figure 3.
Principal components analysis showing species level differences in mean fish abundance between the three UVC techniques.
(A) All 3 transects are clearly separated along PC1. (B) Vector plot showing the fish species driving patterns in relation to the three transects shown in (A).