Research team gain new scientific device
May 19, 2010 by dyertrust
The last few weeks have seen the beginning of an exciting new phase of research in Klein Bay which that will help us to understand the behaviour of the great white sharks here for the first time. Things are coming together nicely with new equipment, discounts, donations and team spirit! Research Team Gain New Scientific Device A CTD! Measuring white shark movements in relation to environmental parameters is certainly easier said than done! However, thanks to one of our scientific supervisors, Dr Malcolm Smale of Bayworld in Port Elizabeth, the first phase of the inshore shark project has begun. Malcolm kindly permitted the research team to use his CTD which as the abbreviation implies measures water conductivity, temperature and depth.
After an in depth training session from Malcolms research assistant, Michelle du Toit, the team went into the field to sample water within the Bay and around Dyer Island. We sampled four sites inshore, one in Shark Alley itself and one just over the Geldsteen side of the Island (a well known area for the sharks in winter). The graph (above left) may look like three pretty ordinary lines to most folk but in fact these are extremely accurate plots of the turbidity (red line), salinity (blue line) and temperature (green line) at sample site 6 of our transect test grid just outside the mouth of Shark Alley.read more