Monster Seminar JAM - Abundance and movements of blue and humpback whales and insights on their underwater behavior from suction-cup tags
Mr. John Calambokidis, Cascadia Research
Cascadia Research has examined the movements and abundance of humpback and blue whales in the eastern North Pacific since the mod-1980s. Using photographic identification they have identified close to 1,500 individuals of each species along the west coast of the US, representing a majority of the population. This has allowed determination of population structure, movements, abundance, and population trends. For humpback whales this has revealed an increasing population that went through a dramatic one-year decrease in the late 1990s and has also revealed the longest known migration of any mammal. More recently we have been able to examine the underwater feeding and vocal behavior of blue whales with the assistance of three types of suction-cup attached tags.
Date and Time:
April 22, 2004,
11:00 am - 12:30 pm