Quote:What the MSY or how you achieve it?
Both. Technically the MSY isn't actually the maximum if you aren't employing the best management tools, but there is no theoretical limit to this, plus it adds unreasonable complexity to the concept, so management regime is usually taken as a fixed parameter in considering MSY.
Quote:I don't think many (if any) of them were fisheries biologists.
They all work in relevant fields. This was not a call for anyone with letters after their name to sign a political statement.
Quote:The marine park approach is the theoretical one especially if you after maximum or optimal sustainable yield.
That was based on practical experience, not theory. The theory did not predict improved yields. It was observed.
Quote:The socio-economic drawbacks are very apparent.
You mean putting up with people who whinge about it constantly? The same thing happens every time a new fisheries management tool is introduced. Almost identical complaints were made when TACS, minimum sizes, bag limits etc were introduced. All management tools have socio economic costs and those from marine parks are not any different. It is the fact that it is new that makes people complain, not anything fundamentally different.
Quote:So why should we rush down this path.
No-one is rushing, but the evidence justifies their implimentation.
Quote:If you forget the political manifestos
If we did that none of the so-called 'evidence' you rpesented would make it in. If you had real evidence you wouldn't bother with crap like what you posted from Richard Tilzey, which is purely political and doesn't even make sense when you think about it.
It is not a political manifesto. It is a statement of scientific consensus.