Figure 1.
Locations of acoustic receivers in False Bay, South Africa.
Within the Bay receivers were categorized as either Island (Seal Island) or Inshore (within 2 km of the shoreline). The insert shows the location of False Bay within the Western Cape region of South Africa. Satellite imagery: GoogleEarth. Date accessed: 07 09 2012. Co-ordinates: 34.216812 18.684759. Reprinted from Esri, DeLorme under a CC BY license, with permission from the Esri.
Table 1.
Summary of the independent variables used in the GLMM analysis.
Table 2.
Summary of tag deployments on white sharks Carcharodon carcharias in False Bay between May 2005 and December 2007.
Figure 2.
Timeline of the daily detections of acoustic tagged individual sharks in False Bay from 1 May 2005 to 31 December 2007.
The first point indicates the date the shark was tagged, time at liberty is represented by grey bars and an open circle indicates the last detection as being on a receiver outside of False Bay, at Gansbaai, Mossel Bay or Algoa Bay.
Table 3.
Generalized linear mixed models constructed for predicting whether white sharks Carcharodon carcharias would be present at the Island versus Inshore.
Table 4.
Results from the Generalized Linear Mixed Effects Model (GLMM) showing the likelihood of white sharks Carcharodon carcharias being at the Island versus Inshore across seasons.
Figure 3.
The proportion of visits to each region in the Bay for all years combined.
Average (± s. d.) proportion of visits to the Inshore (black line) and Island (gray line) areas of False Bay for each month of the year.
Figure 4.
The proportion of visits to each region in the Bay for all years.
Average (± s. d.) proportion of visits to the Inshore area (black line) and Seal Island (grey line) for tagged male and female sharks for each month of the year (Jan-Dec) from May 2005 to December 2007.
Figure 5.
The proportion of visits to each region in the Bay by sex.
Average (± s. d.) proportion of visits to the Inshore area (black line) and Island (grey line) for tagged male and female sharks for each month of the year (Jan-Dec) from May 2005 to December 2007.
Figure 6.
The proportion of visits to each region in the Bay by size.
Average (± s. d.) proportion of visits to the Inshore area (black line) and Seal Island (grey line) for tagged < = 3 and >3 m sharks for each month of the year (Jan-Dec) from May 2005 to December 2007.