A 43-year-old male orca named Mega, now missing and presumed dead, was one of the first new calves that researcher Ken Balcomb spotted when he began his extensive census of Southern Resident killer whales back in 1976. Ken didn’t know it at the time, but the baby orca — one of nine born in 1977 — would grow to become a large, powerful whale, living up to his name by fathering at least 20 offspring of his own. Designated L41, Mega was around throughout Ken’s career at the Center for […]
Increased consumption of Chinook salmon by seals and sea lions in the Salish Sea “could be masking the success of coastwide salmon recovery efforts,” according to a new study published this week in the journal Scientific Reports. Endangered resident orcas are said to be declining in part due to a lack of available Chinook, the orcas’ preferred prey. Read the article by PSI senior writer Christopher Dunagan in Salish Sea Currents.
Our 2016 article “Killer whale miscarriages linked to low food supply” provided an early look at a study published this week in the journal PLOS ONE. PSI senior writer Christopher Dunagan wrote the article based on research that was presented at the 2016 Salish Sea Ecosystem Conference, and it remains a helpful summary of the newly published findings. Scientists have found that Puget Sound’s endangered Southern Resident Killer Whales are experiencing a high rate of miscarriages in large part because they are not getting enough food. The whales depend primarily […]
New techniques for studying orcas have been credited with breakthroughs in reproductive and developmental research. Drones and dogs are helping scientists connect declines in food supply with low birth rates and poor health. Read the story this week in Salish Sea Currents.
Last month, more than 1100 scientists and researchers converged on Vancouver, B.C. to attend the Salish Sea Ecosystem Conference. The biennial conference is the region’s largest gathering on the state of the ecosystem, and we sent a group of reporters to bring back some of the highlights. Over the next several months, we’ll be collecting those highlights into a new series on the Encyclopedia of Puget Sound. We kick things off today with a must-read story from Christopher Dunagan. He reports that scientists may be changing their view of how PCBs and other […]
From orcas to starfish to humans, disease affects every living creature in the ecosystem. Scientists are increasingly alarmed by its potential to devastate already compromised populations of species in Puget Sound. Read the story in our Salish Sea Currents series.
