Project ONR-tagging

2010 - 2011

Project "Beaked whales and pilot whales in the Alboran Sea (SW Mediterranean): research towards improved science-based mitigation strategies for risks from man-made sound". In collaboration with Woods Hole Oceanographic Institute. Funded by Office for Naval Research, US.

Aims:

The aims of this project were:

(1) To assist with a cruise to tag, observe baseline behavior, and conduct playback experiments with beaked whales and blackfish in the Mediterranean during 2009.

(2) To contribute to further work tagging, observing baseline behavior, and conducting playback experiments with pilot whales during the summers of 2010 and 2011. This includes achieving the following objectives:

a. To estimate the proportion of time the animals spend underwater, and therefore estimate g(0) to be able to obtain an absolute estimate of abundance for the population.

b. To understand their feeding behavior.

c. To understand their acoustic behavior, both under “normal” circumstances (e.g. when resting, feeding, travelling) and how they behave and react under different circumstances, such as presence of other species, different sources of potential stress (e.g. playbacks, maritime traffic).

d. To gain insight into their social structure and dynamics, both under “normal” circumstances and under different circumstances, such as presence of other species, different sources of potential stress (e.g. playbacks, maritime traffic).



Observation of the animals' behaviour from the research boat.

 

 

 

 

Recovering a large trawler net drifting on the surface (danger for navigation and for the fauna).

 

Descripción: http://www.alnilam.info:8008/images/images/onrtag5.jpgA large group of long-finned pilot whales resting on the surface between the research boat and the tag boat.

 

Tagging a pilot whale with a DTAG (with suction cups).


Tracking tagged pilot whales with a VHF during the day

 

Tracking tagged pilot whales with a VHF during the night

 

Research boat "Marvel"

 

Working at sunset.

 

Doing photo-identification

 

Pilot whale with a DTAG.

 

Data collection onboard the ship

 

Tagging a pilot whale from the research boat with a DTAG.

 

Searching for animals

 
Share
Free business joomla templates