Saturday, March 29, 2014

Success in Chagos!

Team Chagos, composed of scientists from our very own TRCC, Australia and the UK have completed their deployments of new Vemco receivers and Wildlife Computers satellite tags.

Today we have completed the installation of a network of underwater receivers that will provide both real time updates and the capacity to monitor this - the largest Marine Protected Coral Reef Atoll in the world. Our "Wired Ocean" concept is now allowing the international team to follow the reef ecosystem in real time, and over the next decade.  The first ocean observation devices have also been installed providing oxygen and temperature measurements that should enable initiation of long term climate data.

Thanks to our the crew and the scientists, along with the Bertarelli Foundation and Rolex, for helping to make this transfer of technology happen!

Friday, March 28, 2014

Deployments Under Way in Chagos

Dr. Taylor Chapple (right) tests a newly-placed buoy
The team is deploying and testing a series of buoys capable of detecting tagged sharks and uplinking to orbiting Iridium satellites. These buoys are large and challenging to install in this remote location.

With back up assistance from Amirix and back and forth with our California team, Dr. Taylor Chapple, Robbie Schallert and  the multi-national expedition have succeeded in deploying and testing these biological ocean observation tools. Now as sharks swim by, we will be able to monitor their movements at two points - moving in and out of the largest atoll in the world, Peros Banhos.

At other locations we have placed four underwater VR4 UM monitors that will provide the capacity to monitor and uplink shark movements to a surface modem.

Aaron Carlisle, Dave Tickler, John Dale,  and the crew have worked together to place 44 underwater monitors that are “marine animal detectors” at key locations between two atolls (Peros Banhos and Salamon Islands) providing extensive coverage of the region.

Monday, March 24, 2014

Expedition Chagos - March 24

A "shark-eye" view of the reef, from a camera on a grey reef shark
Dr. Taylor Chapple and team have successfully deployed the CATS camera tag on a grey reef shark and the view below of the Chagos is stunning! These tags are put on for short durations by attachment to the dorsal fins. The grey reef has recorded several hours of footage and this snapshot provides a “shark-eye” view of the coral paradise called home.
(L-R) Dave Tickler, Aaron Carlisle and Taylor Chapple on the fantail

Sunday, March 23, 2014

Expedition Chagos - March 23

Aaron and Dave working hard
The team in the Chagos (scientists from Stanford, University of Western Australia, London Zoological Society) have had a very successful research trip thus far- placing over 30 acoustic tags in sharks, and recovering the data from an extensive VR2w network we placed in the Chagos over a year ago. The great news is the receivers have recorded excellent data. 

Currently the team is at Salomon Atoll, where we’re recovering a VR4 Global, to rebattery and reposition, and then placing VR4 Ums near the Channel. Our on board team has been very successful tagging grey reef sharks and silvertips. They report easily placing the acoustic tags into 10 sharks over at Salomon Atoll and 20 over at Peros Banhos.  The placement of the tags at the two atolls, separated by over 30 km, will help discern the connectivity between the two regions. VR4 Globals, which have been in place for over a year, are now getting fresh batteries, new flotation collars and beefed-up moorings. Soon we’ll be hearing from these shark in the Indian ocean

The arrival of the tagging gear was a celebrated event

Friday, March 14, 2014

VR4 Global Acoustic Receivers Around the Globe

A VR4 Global buoy floats off the Central California coast to detect white sharks and other tagged predators swimming past
 The ROLEX and Bertarelli Foundation  funded VR4 Global acoustic receivers, coupled with our surface buoys, have provided a remarkable capacity to detect white sharks, mantas, and grey reef sharks in the Chagos Archipeligo. The system has proven robust as we've deployed it in a variety of ocean conditions around the globe- in our efforts to improve the capacity to do ocean observations from remote locations.

One of our VR4 Global buoys arrives in the Maldives, to detect predators around the Chagos Archipelago
The picture above shows the arrival of the VR4 Global from the white shark network in the Maldives, where our team will deploy the buoys for remote detection in the Chagos Archipelago. The expedition is being led by Taylor Chapple, Aaron Carlisle, Robbie Schallert, Jon Dale and Dave Ticker. This Stanford US/Australia team is also accompanied by BIOT researchers from London. We look forward to hearing from the team as they deploy a network of receivers, and tags in one of the most remote locations on the planet!