Originally posted by Cohoangler
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As I said earlier, sustained yield does not necessarily mean maximum sustained yield. It is only when we have adequate data and historical evidence that we can set a BEG (biological escapement goal) and manage for maximum sustained yield. Otherwise we don't manage for maximum sustained yield with OEG or SEG. Keep in mind not many fisheries in Alaska have adequate historical data to manage to BEG.
I do not agree that the sustained yield principle has changed in regards to risk. In fact it was designed with foresight for the exact risks our fisheries are experiencing today - changes in ocean conditions, decreased productivity, human activity, habitat loss, etc. Those risks have always been there. And Alaska appears to be reacting accordingly - limited entry, sport fishing closures, increased restrictions and modified regulations, more conservative management models, research and observation programs, studies and data collection, new technologies, etc. We are beginning to acknowledge and even understand those risks now more than ever, and we are using our conservative based sustained yield principle to address them accordingly.
I believe we have a reasonable handle on what is sustainable. There are many examples of just that. And there are many examples of restricting or not allowing harvest where fisheries are not capable of harvest. Keep in mind a sustainable run can mean two fish. Somewhere after that is sustainable yield. I suppose we could argue about management reaction time, economic-political influences and priorities, allocations, or a tainted management process, etc. but that is a different discussion (and really where our fishery management fails us) - Arg.
The notion that the sustained yield principle is supposed to eliminate Chinook declines, is incorrect. The sustained yield principle can not possibly be responsible for declines due to unforeseen factors. It can only be responsible for adjusting resource use according to them, in an effort to make them sustainable to harvest. Fluctuating Chinook runs, due to whatever natural reason, can not be eliminated by it. The sustained yield principle simply does not have that kind of connection with God. It is only the best we have in regards to our harvest of the resource.
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