Project
Burrunan
Investigating our own endemic Lakes Entrance Dolphin Species
The other day I was very curious about a two young people with assorted
gear sitting up at the Jemmy Point roadside lookouts on the road down
the Kalimna hill and into Lakes Entrance. I did a u-turn at the
roundabout over the bridge and headed back to quench my curiosity. I had
heard they were tracking whales, which sounded very interesting.
Well I was only partly right as they were tracking pods of dolphins
(well they are Cetaceans too) that are a localised population in the the
Gippsland Lake System (not including the surrounding lakes like Lake
Bunga or Lake Tyers). The scientific name of the Burrunan Dolphin is
Tursiops
australis. Using a combination of photography and telemetry they
were identifying Dolphin activity in the main Reeves channel and the
other arms and channels that open into that area. The Jemmy Point
roadside lookout gave them a commanding view of where Cunninghame Arm,
North Arm, Reeves Channel and The Barrier all feed into the main
entrance channel. The organisation that was sponsoring this research was
the
Australian Marine Mammal
Conservation Foundation.
These endearing, and very elegant, bottle nosed dolphins are loved by
people all over the world. Check out these
Google
Images.
The scientists were very patient with my questions and added much extra
useful information without prompting. I was very impressed with their
professionalism and savvy community minded responses. Kate
Charlton-Robb, a Cetacean researcher, has championed these Dolphins
because it is believed they are
genetically
isolated from the other dolphin species and only found in port
Phillip Bay and The Gippsland Lake System. This
scientific
paper will give you a glimpse of how much hard scientific work is
required to establish a "new species". Because of the Burrunan's small
populations it makes them more vulnerable to habitat change and we need
to be careful, because if these populations die out, they cannot be
simply replaced by importing dolphins from elsewhere (whether by human
intervention or naturally). Who knows what adaptations these creatures
have to survive here that other dolphins do not have?
The yellow tripod system was able to log pod and boat positions directly
onto the laptop computer. The Nikon camera was used to film passing
pods. The videos can be analysed later on to reliably identify
individual dolphins by the shape of their dorsal fin. The system is also
used to record the movement of boats as the dolphins are likely to
interact with boats.
Binoculars and spotting scopes are used to scan the system for sightings
and refine where the more exacting measurement systems need to be
focused. The lap top was recording the measurements from the yellow
tripod telemetry system directly into a mapping database. This allows
immediate location of readings on a GPS style map.
The
Australian Marine Mammal
Conservation Foundation are a very worthwhile cause and you should
consider visiting their website to get the full details about our
local
Dolphins.
The researchers will be back lake in January 2018 and we will try to
catch up with them for an update on progress of the study.