|Hi Rose, this is amazing! The Fraser River had a return of only 1 million sockeye salmon in 2009, but it jumped to 35 million in 2010. They think a volcano fertilized the ocean...|
Is B.C.'s sockeye boom a one-off?
The sockeye boom of 2010, he said, looks like it was caused by a volcanic eruption in Alaska, in 2008.
Relying on research done by Roberta Hamme, an assistant professor in the School of Earth and Ocean Sciences at the University of Victoria, Dr. Parsons speculates that the eruption of the Kasatochi volcano fertilized the sea, and stimulated the growth of the salmon, leading to higher survival rates.
Ms. Hamme, in a paper published in the science journal, Geophysical Research Letters, reports that a shower of iron-rich ash fell on the Gulf of Alaska after the eruption.