Anthropogenic Sound Effects on Marine Mammals “ How is the U.S. Navy Involved ?”. Anthropogenic Sound Effects on Marine Mammals. The Devastation of Whaling. Anthropogenic Sound Effects on Marine Mammals. Outline. Tragedies Adverted and Current Madness Historical and Scientific Whaling
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Estimated annual number of dolphins killed in the eastern tropical Pacific purse-seine tuna fishery, total for all dolphins and separately for the two dolphin stocks with the highest number killed.
The Major Global Contribution to Anthropogenic Noise
(George Frisk / Florida Atlantic University)
Anthropogenic Noise Effects
- May cause death or physical injury / hearing loss / stress which leads to detrimental consequences to immune systems and ability to reproduce.
- May mask sounds used to locate prey, predators and mates, and navigate.
- May cause behavioral changes in breeding and calving and choice of migration routes and feeding grounds.
1- 30 kHz
Image Source - Ocean Noise: Turn it down - A report on ocean noise pollution. 2008. IFAW, United States of America.
(Data Source : NOAA)
Images courtesy of Megan Ferguson, Southwest Fisheries Science Center, National Marine Fisheries Service
To combat negative effects on sea life, the Navy funds research by universities and nonprofit organizations into how sonar affects marine life.
Over the past couple of years, the Navy spent between $10 million and $14 million on research annually, "We fund about 50 percent of marine mammal research worldwide,“
- Rear Adm. Lawrence S. Rice
Despite the low numbers (of strandings), the Navy is expanding its marine mammal program and will increase its funding of independent institutions' research to $18 million annually over the next five years.
CDR Carl Allen Hager, Ph.D.
United States Naval Academy
Photo – Katherine Whittaker