Rock And Chips

By Paul Homewood

There is a one more bit to that salmon study which explains an awful lot:

https://www.nature.com/articles/s41467-020-17726-z#article-info

We have had some discussion as to how hatchery salmon could have been competing against wild fish. The paper informs us that:

Across the Pacific Rim, ca. 5 billion hatchery salmon are released into the North Pacific each year where they add to already high abundances of wild pink, chum, and sockeye

Not only are millions of hatchery salmon released (don’t ask me why, I prefer rock salmon!), but evidently wild salmon are also highly abundant.

Not only that, but we also learn that:

We compared current size to a pre- 1990 baseline, but this captures only a small window of commercial salmon fisheries in Alaska, which started in the late 1800s. Size declines were observed long before 1990, and thus we expect that analyses over longer time series would likely reveal even more dramatic impacts.

Size declines have been going on long before AGW. It really does not take a genius to work out that the decline in salmon size has a lot more to do with fishing and other human activities than it does with weather.

FRIDAY FUNNY

OK, I know it’s not Friday, but I could not resist it!!