Current Issue

Supplemental Video: Buzzes and high-frequency clicks recorded from narwhals at their wintering ground from Aquatic Mammals on Vimeo.

Rasmussen, M. H., Koblitz, J. C., & Laidre, K. L. (2015). Buzzes and high-frequency clicks recorded from narwhals (Monodon monoceros) at their wintering ground. Aquatic Mammals, 41(3), 256-264.


Abstract
High-frequency broadband clicks were recorded from narwhals (Monodon monoceros) off the Uummannaq region, Northwest Greenland, in April 2012 and 2013 while whales were on their wintering grounds in Baffin Bay. Recordings were made on eight different days directly from the pack ice edge or through holes drilled in pack ice floes at approximately 71º N and between 54º W to 60º W. Recordings were conducted using a single hydrophone along with a recording system with a sampling frequency of 500 kHz and an Acousonde™ 3B with a sampling frequency of 250 kHz. The energy in the high-frequency narwhal clicks extended up to 200 kHz. Buzzes with inter-click intervals (ICI) down to 3.2 ms were also recorded; however, no whistles were obtained. This is the first time the whole bandwidth of narwhal echolocation clicks has been reported and the first case for which buzzes have been recorded from narwhals at their wintering ground. These data may have implications for conservation, management, and acoustic monitoring techniques in light of ongoing and expected significant increases in anthropogenic sound (e.g., seismic exploration, shipping) in the Arctic.

Subscriber Login

Cart

The cart is empty

Our Sponsors

EAAM New Logo

 

The European Association for Aquatic Mammals (E.A.A.M.) was founded in 1972 in the Netherlands. E.A.A.M. is an organisation of people interested in marine mammals in human care, in a zoological environment, or in the wild.

  

  

alliance3

 

 

 

The Alliance of Marine Mammal Parks and Aquariums (AMMPA) is an international association representing marine life parks, aquariums, zoos, research facilities, and professional organizations dedicated to the highest standards of care for marine mammals and to their conservation in the wild through public education, scientific study, and wildlife presentations.

    

imatasmall

 

 

 

The International Marine Animal Trainers’ Association (IMATA) was founded to foster communication, professionalism, and cooperation among those who serve marine mammal science through training, public display, research, husbandry, conservation, and education. 

Go to top