Supply - Demand...without the demand of the population there would be no need for the overfishing.
simple economics that could equally apply to any commodity, and I still believe is the biggest single failing in the CFP namely the ability to trade/sell quotas/allowances
take any commodity you like, a few large organisations buy up as much production as they can of that commodity, thus the market prices rockets, so economically thats the product that everyone involved will want to get there hands on, will the price holds high, the company holding the allowance sells it at a premium, so the buyer of the allowance needs to 'produce' more to cover their costs, welcome to overfishing
If allowances were rigidly attached to the licence holder, and were not a saleable commodity I wonder how much difference it would of made, maybe none, maybe a lot
The one thing that I am still amazed by is the fact that whilst the main breeding grounds for Cod are well known, no measures have been taken to permanently close these areas to fishing
I have several friends on the west coast that are commercial fisherman, some merely shellfish some mixed. They have imposed upon themselves a system where if they see lots of juvenile fish coming aboard, they share that information with each other, and then avoid that area altogether, but they are now seeing another problem arising. All their returns are recorded, so you can publicly see what is caught from where... so whaddya know larger 'foreign' vessels turn up and go straight to the areas they have recorded as being full of juvenile fish.
The guys running the creels, have adapted all their pots with a 1' escape door so all the smaller prawns can escape the pots, any that don't escape go back anyway, but they are now seeing an increasing number of french boats - big 100' french boats, potting along the same ground and taking every last thing that crawls into the pots. but by and large its the local boats that have been trying to protect their patch are getting the blame, to the point where Britains first marine national park is likely to be formed which will ban all forms of fishing - commercial and recreational, even anchoring in certain bays may be outlawed.
2 years ago, from 3 pots we would pull about a dozen in size brown crab and at least 1 lobster. Last summer, I got 2 lobster in a fortnight, and a couple of decent browns a day, but even more noticeably hardly any velvets, where previously we would get pots full of the the things, and I know first hand that that was not a situation brought about by the <10m local boats
other species such as spurdogs have no quota, last year 2 longliners, and by longliners these are are not the little traditional 20' foot cobbles, but 150' ships that lay 5 miles of long line at a go, virtual wiped out spurs and from some of the most important pupping grounds on the west coast, along with a massive bycatch of Skate Tope and Dogs
Once again, many anglers returning to Sunart, Teacuis, Aline, Mull and surrounds looked straight at the small local commercial boats and blamed them, for the place being a virtual desert
lots of discussion, but not many offers of practical solutions in here so far. For me, I'd suggest permanent closure of the cod's breeding grounds (for at least 5 years), removal of allowance from any company that doesn't actually own a licenced boat, outlaw trading of allowances, and restrict all vessels > 10m, possibly reallocate allowances to the <10m boats, and reward the <10m boats with extra allowance for juvenile bycatch avoidance
the smaller boats will still make a living, possibly better than they do now and keep vital small rural industries alive, the stocks should get a huge lift towards recovery and the french can eat more snails, the spanish can eat more donkeys, and the angler should be quids in
it'll never happen though