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Slide Show

Outline

1	ACOUSTIC DETECTION of BLUE and FIN WHALE SEASONALITY John Hildebrand Scripps Institution of Oceanography University of California San Diego
2	COLLABORATORS Ana Sirovic, SIO Sean Wiggins, SIO Mark McDonald, Whale Acoustics Inc. Sue Moore, NMML/PMEL NOAA Deb Thiele, Deakin University, Australia Ari Friedlaender, Duke University
3	GENERAL ATTRIBUTES OF ACOUSTIC DETECTION Works day and night. Independent of weather. Monitors broad areas over long periods. Provides information on populations
4	Blue Whale Song Worldwide
5	Acoustic Recording Packages (ARPS) Continuous acoustic sampling at 500 Hz Seafloor mooring; hydrophone suspended 5m above frame. Calls recorded to hard disk for 12 months.
6	ARP Deployment Sites
7	Recorded Whale Calls
8	Other Recorded Calls
9	Results: Site 1- Off Livingston Is.
10	Results: Site 2- Off Anvers Is.
11	Results: Site 3- Off Renaud Is.
12	Results: Site 4- Off Adelaide Is.
13	Summary: Blue whales present year-round peak calling in Jan - Feb autumn -- more calling at northern sites summer -- more calling at southern sites Fin whales present seasonally peak calling in Apr - May highest calling rates site 1&2