killer whales

Southern Resident Killer Whales Unlikely to Survive Increase in Oil Tanker Traffic, Say Experts

Under the waves of Haro Strait, hydrophones record the noise made by passing vessels and, if you happen to be a whale, the din is already disorienting and disturbing, making it difficult to echo-locate food or communicate with other members of the pod.

Tweet: ‘It’s a thunder. Thump-thump-thump, accompanied by squeals & engine noise - like being under the hood of a hot-rod’ http://bit.ly/2gi1faFIt’s a thunder. Thump, thump, thump, accompanied by squeals and engine noise. It’s like being under the hood of a hot-rod,” said Howard Garrett, president of Orca Network, the Washington State group that tracks the comings and goings of the 80 remaining members of the endangered southern resident killer whales.

All recent studies of the resident pods have identified marine noise around the Strait of Georgia and Juan de Fuca Strait as one of the stressors threatening their survival, in addition to lack of Chinook salmon — the whales’ favourite prey — contaminants accumulating in their blubber and degradation of their critical habitat.

Ship Noise Harming Endangered Killer Whales in Salish Sea: New Study

Killer whales eye oil tanker in Salish Sea

Underwater shipping noise in the Salish Sea is likely making it difficult for endangered southern resident killer whales to find food and could threaten their survival, according to a team of U.S. scientists.
 
A new, two-year study, published in the academic journal Peer J, used underwater microphones to take 3,000 noise measurements as 1,600 individual ships passed through the Washington State side of Haro Strait.
 
The study site is in the middle of critical habitat for the fish-eating southern resident killer whales and researchers found shipping noise extended to middle and high frequencies used by killer whales to echo-locate prey. Killer whales emit a series of clicking sounds and then listen for the bounce-back echoes in order to find fish.
 
The researchers found the growth in commercial shipping has raised the intensity of low-frequency noise almost 10-fold since the 1960s and there is growing evidence that it is affecting the communication ability of baleen whales, such as humpbacks, gray whales and right whales.

Salish Sea Orca Whales Not Mating, Socializing in Polluted Soundscape

orca whales, salish sea, kinder morgan, coal export terminals

Vessel noise is already hindering endangered southern resident killer whales from communicating and finding fish and the noise bombardment will get worse if proposals for coal terminals and pipelines in B.C and Washington State are approved, said scientists and environmentalists at a conference looking at the health of the Salish Sea.

“Ships dominate the soundscape of Puget Sound,” said Scott Veirs, Beam Reach Marine Sciences and Sustainability School program coordinator and professor, speaking at the Salish Sea Ecosystem Conference.

Veirs and his students take underwater sound recordings off Lime Kiln Park on San Juan Island, an area where the killer whales are known to spend time, and then model the echo-location and communication consequences for the resident killer whales. The resident killer whale population has dropped this year to 80 animals in three pods, the lowest number in more than a decade.

Retreat from Science: Interview with Federal Scientist Peter Ross Part 2 of 2

On April 1, 2013 Canada will lose its sole marine contaminants research program. The loss comes as a part of a massive dismantling of science programs at the Department of Fisheries and Oceans announced in May of 2012. 

Peter Ross, lead researcher at Vancouver Island’s Institute for Ocean Sciences, is a recent casualty of the sweeping science cuts moving across the country.
 
In this second installment of DeSmog Canada’s interview with Ross, he discusses the importance of the scientific method as a bulwark against bias in policy-making, the danger of industrial pollutants in marine habitats, and what killer whales can tell us about our society.

Retreat from Science: Interview with Federal Scientist Peter Ross Part 1 of 2

When the Harper government announced deep funding cuts to science programs across the country, the Institute of Ocean Sciences, one of Canada's largest marine institutes located in Sidney, B.C., was among those research outfits hurt as a result. Lead research scientist Peter Ross is one of more than one thousand Department of Fisheries and Oceans (DFO) employees who discovered their position had been terminated.

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