GLG
Well-Known Member
I agree that we do have declining Chinook runs ("stocks of concern" ) in BC that obviously need protecting however I suggest that this doesn't mean that the overall numbers of Chinook ( food for SRKW) is way down. Those particular declining stocks and "stocks of concern" likely have no relationship as to why there is a decline of SRKW. Ian said that there are plenty enough Chinook for SRKW to eat - he also commented that his area has been just full of Chinook this year. I know some very experienced fishers involved in the sport fishing industry that would agree with that despite knowing there are declining Chinook "stocks of concern" in BC . One of them said there is more Chinook in lower Georgia Strait in the last 5 years than there has been in the previous 20 years ! I don't find that unrealistic as I have also found fishing for Chinook in lower Georgia Strait has been better the last few years DESPITE some BC stocks in trouble. Hence makes no sense to surmise then that SRKW are on the decline due to any lack of Chinook to eat. Size average is down though but I don't believe SRKW would starve themselves because their abundant food source was a little too small lol . A large portion of the Chinook we are catching is thanks to our friends down south pumping our waters with Chinook. Many of the Chinook in our waters are US bound fish and SRKW will be eating. US bound Chinook are likely part of the reason that Chinook fishing is being reported as better the last few years.
The evidence suggests that SRKW do key in on the large Chinook and ignore the smaller ones. It's complicated but if we're talking about the whole population of Chinook and where these SRKW range then this paper will be of interest (mind the age of the data). It shows a trend to younger fish in abundance, like we are seeing, and a decrease of larger (older) fish. So it maybe correct that fishing has been great but finding a tyee is rare now. Going from memory.....One of the reasons that DFO said that we needed a new regulation for the 2018 SOG was to protect the Harrison Chinook 4/5 year class. In my area we saw lot's of 3 year class so clearly it's easy to think DFO is wrong if you don't understand the reason for the new regulation and think a Chinook is just a Chinook.
https://onlinelibrary.wiley.com/doi/full/10.1111/faf.12272