The bones of sea turtles have annual rings like those found in trees, and chemical markers within them give scientists a detailed view of the animal's life history.
When Exxon Valdez ran aground 25 years ago, spilling 11 million gallons of crude oil into Prince William Sound, the results were plainly visible on the nightly news: fouled beaches, oiled carcasses, and closed fisheries.
Despite an extreme bottleneck that nearly decimated the Redfish Lake sockeye population in the early 1990s, the captive broodstock program retained 95% of the population’s genetic diversity.
NOAA Fisheries said today it will not seek further review of the Ninth Circuit Court’s decision that, in effect, requires the agency to revise its current authorization for Washington, Oregon, and Idaho to trap and kill California sea lions.
The NWFSC’s Point Adams Research Station, located at the mouth of the Columbia River at Hammond, OR, is home to 30 scientists and staff who spend most of their time shadowing salmonids, or their predators, for a living.
NWFSC scientists Eric Ward and Elizabeth Holmes, along with Ken Balcomb of the Center for Whale Research, have found a correlation between the abundance of Chinook salmon and the fecundity (reproductive success) of killer whales.
