04-22-2011, 10:00 PM
Not arguing. I was just saying thats where the missing fish go.
Lets face it the indians where here before us. Everything we did basically screwed them. In reality they could have a much higher precentage of the fish.
I dont know why the lower river states get such a high percentage, but most years about 50% of the run is upper and 50% lower. Changes from year to year.
When I say mortality im including all mortality. You would be surprised how many die. This is pretty stressful for the fish.
When i said natural mortality Im including anything that kills a fish other than like gillnets or rec fishing. Probably 10% up to 15% of adults die prior to reaching spawning grounds. Its a pretty stressful process. On a cold water year like this morts would be low but if the water in the reservoirs warms up then they can drop pretty fast especially if conditions arnt good for climbing the ladders.
Under good conditions catch and release causes about 8% mortality (within24 hours). Factor in that these fish still have another 600+ miles to swim and we dont really know what additional post release mortalty really is.
The straying rate varies from year to year and has to be factored in for the whole system. We arnt talking thousands of fish but its addative to everything else. At times 10% of a run can be made up of stray fish. Some studies indicate that hatchery fish have a statistically higher stray rate than wild fish.
Heres a kicker. WA and OR were nice enough to extend the upriver fishery ( above bonn Dam) cause thier people didnt catch enough of the lower river quota. Its now open to May1. Good news is there appears to be a very large number of salmon staging in the river below Bonn Dam. We'll see
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Lets face it the indians where here before us. Everything we did basically screwed them. In reality they could have a much higher precentage of the fish.
I dont know why the lower river states get such a high percentage, but most years about 50% of the run is upper and 50% lower. Changes from year to year.
When I say mortality im including all mortality. You would be surprised how many die. This is pretty stressful for the fish.
When i said natural mortality Im including anything that kills a fish other than like gillnets or rec fishing. Probably 10% up to 15% of adults die prior to reaching spawning grounds. Its a pretty stressful process. On a cold water year like this morts would be low but if the water in the reservoirs warms up then they can drop pretty fast especially if conditions arnt good for climbing the ladders.
Under good conditions catch and release causes about 8% mortality (within24 hours). Factor in that these fish still have another 600+ miles to swim and we dont really know what additional post release mortalty really is.
The straying rate varies from year to year and has to be factored in for the whole system. We arnt talking thousands of fish but its addative to everything else. At times 10% of a run can be made up of stray fish. Some studies indicate that hatchery fish have a statistically higher stray rate than wild fish.
Heres a kicker. WA and OR were nice enough to extend the upriver fishery ( above bonn Dam) cause thier people didnt catch enough of the lower river quota. Its now open to May1. Good news is there appears to be a very large number of salmon staging in the river below Bonn Dam. We'll see
[signature]