Written by Linc Bedrosian
Populations of Atlantic salmon have a surprisingly good capacity to adjust to warmer temperatures that are being seen with climate change, a group of scientists at the University of Oslo and University of British Columbia have discovered. The finding about Atlantic species adds to recent UBC-supported research on heat tolerance of Pacific salmon.
The new study, a collaboration between Norwegian and Canadian researchers, was recently published in Nature Communications. Funded by the Norwegian Research Council, it addressed questions around how climate change might affect salmon species distribution and abundance.
UBC authors of the study include Katja Anttila, a postdoctoral fellow who now works at the University of Turku in Finland, and Tony Farrell, Chair in Sustainable Aquaculture.
Scientists studied wild salmon from two European rivers. They compared a cold-water population from Norway's northern Alta River, where water temperatures have not exceeded 18 C for 30 years, with warm-water populations from France's Dordogne River, located 3,000 kilometers south, where annual water temperatures regularly exceed 20 C.
Eggs from both populations were hatched at the University of Oslo, where they were raised at 12 C or 20 C. Despite substantially different natural environments, both populations had remarkably similar capabilities when warmed.
Read the full story at Science News Online>>
Want to read more about Atlantic salmon? Click here...
The anti-mining group Salmon Beyond Borders expressed disappointment and dismay last week at Alaska Governor Bill Walker’s announcement that he has signed a Memorandum of Understanding with B.C. Premier Christy Clark.
This came just days after his administration asked members of his newly-formed Transboundary Rivers Citizens Advisory Work Group to provide comment on a Draft Statement of Cooperation associated with Transboundary mining.Read more...
NMFS recently released a draft action plan for fish discard and release mortality science, creating a list of actions that they hope can better inform fisheries.
We know that fishermen have to deal with bycatch by discarding or releasing unwanted catch overboard, but there is a data gap regarding how those fish survive.Read more...