“Our results suggest that sea-louse counts reported by the salmon farming industry are lower than the true abundance of parasites on their fish. When the federal government audited a sea-louse count, the industry’s mean counts for that month increased by a factor of 1.18 for L. salmonis and by 1.95 for C. clemensi.” – Sean Godwin et al, Bias in self-reported parasite data from the salmon farming industry.
Dr Sean Godwin is the lead author of eight of the fifteen scientific papers listed on his website. The bulk of these explore interactions between wild and farmed salmon. One of the most troubling, published in the journal Ecological Application, is a survey that showed fish farms underreport sea lice when they are not audited by Fisheries and Oceans Canada.
Continue reading Fish farms underreport sea lice when not being audited, study says
Deep water temperatures in fjords along BC’s Central Coast have increased 1.2–1.3°C over the past 70 years, a recent report shows.
Continue reading Deep water temperatures in BC Fjords rose 1.2–1.3°C in 70 years
The offshore region between Northern Vancouver Island and Haida Gwaii is one of the most seismically active regions in Canada. There have been more than 2,000 earthquakes during the last 4 to 5 years, and four of them measured more than 6 on the richer scale. While the magnitude 2.9 quake in Campbell River last February was smaller, it is a reminder that earthquakes happen here. In this morning’s broadcast Andrew Schaeffer, an Earthquake Seismologist with the Geological Survey of Canada, describes the network of seismic stations that observe earthquakes off the West Coast
Continue reading Observing Earthquakes off the West Coast
National Observer, Local Journalism Initiative Reporter
Canada is in the enviable position of having the longest coastline in the world. But our trio of oceans is being battered by a storm of negative impacts, be it overexploited fish stocks, plastics pollution, degrading marine food webs, increasingly fragile coastal ecosystems or biodiversity loss accelerated by ocean warming and acidification. Yet, at the very crest of their vulnerability, Canada’s oceans may stand to benefit from a potentially transformative decade.
Continue reading DFO: a potentially transformative decade