Am not sure why pink salmon entering the lower river is perceived as some kind of problem? Simply put it is not. It isn't going to block any other salmon using the system. If that was the case consider Quinsam/Campbell River as dead ditch because they estimate a million pinks returned this year. Even if they try and spawn then die it is not a big deal. As Lipripper points out this brings much needed ocean nutrients into the system, a system that today has far less nutrients than in its long history.
This is a very low risk project but brings several benefits. If the DFO Wild Salmon Policy Transplant Committee put their signatures to the Cowichan pink salmon net pen program you can bet it is not any significant issue, as they are an ultra conservative bunch when it comes to moving fish around (from one system to another) as they should be.
Also these fish are native to the Pacific ocean. Yup, they are all around us. Some 20,000,000 swam right by the front door this past summer, ergo I can't see why some look at the pinks in Nanaimo, Cowichan (or even Sidney for that matter) as some kind of 'foreign' or scary alien plague. They are not! They live around here.
Additionally, in the '60s or '70s a DFO science study of young salmon habits (I think undertaken by S. Argue) showed that juvenile pink salmon can be found in the near shore waters during summer all around Georgia Strait (from Race Rocks to Port Hardy) suggesting they are here anyway whether we chose to believe it or not.
And important to understand is that the Cowichan River has had and still has a remnant run of wild pink salmon. It is not widely known. Also did you know that over 2000 pinks entered the Cowichan last year? That is before the net pen project could have provided pinks in the river.
If anyone bases their thought processes around 'foreign' for pinks, then those same folks must shout loudly to champion a massive brown trout eradication program for the Cowichan. Now they are an introduced, alien or 'foreign' species. Or what about bass in Cowichan, Shawnigan and Elk Lakes for that matter? I don't think the eradication of those 'foreigners' is going to start any time soon!
Just so we don't get confused, I am not from a science or biology background. I can only respond with what information I have read and heard from those in science that understand this issue. I do not have all the answers. There is no one who can stand up and say conclusively that there are no risk at all, but this is a very low risk program. The folks in science and fish management that I speak to about this don't understand why there is concern in the public. Remember Campbell River and Nanaimo pink programs are seen as a great plus and yes a benefit to the area and local community. Nanaimo is net penning 1,000,000 baby pinks each year as the WANT a run in that river to (re-)establish and this is where there are also Lower Georgia Strait chinook (which are in trouble like the Cowichan chinook).
Let's not get too stressed out there are bigger battles to fight.
Just my 2 cents
P.S. these aren't Atlantic salmon, net penning projects are not like the open ocean aquaculture industry and oh yes, the volunteers aren't from Norway [}
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God never did make a more calm, quiet, innocent recreation than angling - Izaak Walton