Fig 1.
Location and field of view of the surveillance camera at Seal Rocks (crossed area is area of camera coverage) and locations for Baited Remote Underwater Video surveys of snapper (Chrysophrys auratus).
Dark grey areas = no-take areas, mid grey = partially protected areas and light grey = General use areas.
Fig 2.
Vessel illegally fishing within the no-take area at the northern end of Big Seal Rock.
When the camera was zoomed in, three people were observed illegally fishing from this vessel.
Fig 3.
Number of vessels observed illegally fishing from April 2017 to March 2018 within the Seal Rocks no-take area (grey bars) for each month, and the number of hours observed fishing effort (dark line).
Fig 4.
Mean number of vessels (+/- standard error) detected within Seal Rocks no-take area for each day of the week.
Means with the same letter are not significantly different from one another.
Fig 5.
Mean number of vessels (+/- standard error) detected within Seal Rocks no-take area for time of day periods per month.
Means with the same letter are not significantly different from one another.
Fig 6.
Changes through time (years) in mean relative abundance of C. auratus (+/- standard error) for each location.
Goodness-of-fit measure for significant linear regression models indicated by r2 value.
Fig 7.
Comparison of length frequency distribution (total length) for MaxN recorded C. auratus in 2 cm bins in the Seal Rocks no-take area between 2013 (blue line) and 2017 (red line). Dashed black line = minimum legal size for C. auratus (>30 cm).
Fig 8.
Mean total length (± S.E.) of largest observed C. auratus per BRUVs deployment for each location across four years (light grey bars).
Largest C. auratus (total length–cm) observed for each location for each of the four years sampled (black lines). Years with the same letter are not significantly different from one another within each location (SNK analysis). No letters indicate years are not significantly different within each location. Proportion of C. auratus over the legal size limit (> 30 cm) indicated by dark grey bars. Legal size limit (30 cm) indicated by dashed black line. NTA = No-take Area.
Fig 9.
Mean total length (± S.E.) of all observed C. auratus per BRUVs deployment for each location across four years (grey bars).
Mean total length (± S.E.) of C. auratus > 30 cm observed for each location for each of the four years sampled (black lines). Years with the same letter are not significantly different from one another within each location (SNK analysis). No letters indicate years are not significantly different within each location. Legal size limit (30 cm) indicated by dashed black line. NTA = No-take Area.