Charlie
Well-Known Member
quote:Originally posted by Gooey Bob
Interesting thread, first, a question, then an observation...
Are the "recoveries" here actually CWT recoveries of cuught fish, or are they fish that are carrying acoustic tags and then the "recovery" is the recognition of that acoustic signature by the POST system? If it is the latter, then I'd suggest that the data in no way actually represent the migration pattern of any large stock group like "Columbia River Chinook" (which is actually broken down into several smaller stock groups like "Upriver Brights, Tules, etc) but rather a smaller subset of fish that are marked as part of the POST program.
Secondly, and assuming these are CWT recoveries and not POST hits, I wonder just what Canadian fisheries management area is covered under the heading "Juan De Fuca" in the data Charlie has presented here. My guess is that its all of areas 19 & 20. Considering that area 20 extends up as far as Bonilla Pt. its not hard to imagine that Columbia bound fish will end up being caught there. IMO, in this debate, "Juan De Fuca" caught fish would be more in the Sherringham and points east zone. Renfew is to Juan De Fuca, like outer Barkley Sound is to Alberni Inlet. Sure you'll catch Robertson Creek Chinook at Swale Rock, but you're just as likely to catch a Yakima River fish there too. Its a serious mized stock fishery at Renfrew, and they do catch a lot of US produced fish. CWT data show that. It makes sense that you'd recover a fair number of chinook of Columbia origin at Port Renfrew, but I'd bet my Islanders that there is a direct negative relationship between the frequency of catching Columbia Bound mature Chinook (feeders can show up anywhere, but typically aren't 40 - 60 lbs)and the distance east from the open pacific you are in Juan De Fuca.
Couldn't resist...
Gooey
Here is a link you might find interesting: http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.0060265
They use a V9 Coded Transmitter
265
Here is the locations of POST receivers. I can't tell for sure,but it looks like two in the strait, one on both sides. I probably could find that if you really want to know? Also, notice the release sites!
Both "Tracking" and "Recovery" data is actually uploaded to the POST Website. If you go to the website and go to database you can see where the uploads are listed. As far as receivers... check out the first map! Their tracking information is right smack in the middle of the Strait. Sorry, NOT Sherringham or Port Renfrew, but look more like Sooke and Pillar Point?
I am not trying to suggest all these fish are 40 to 60 pounds. If I did I surely want to retract that! But, do want to refer that a LOT of them are in the 40 - 60 class!
Do you want to mail me your Islanders? Or, should I plan on picking them up?
