[]Well seeing that both FD and PJ are passionate about our oceans, and both seem keen on protecting them, you will probably find these TED talks interesting.
http://www.ted.com/talks/jeremy_jackson.htmlThis one from ecologist Jeremy Jackson is pretty gloomy, but has some particularly interesting images of "tourist fisherman" catch photos, from the same area in the 1950's, where huge fish were almost always caught, to the tiny, by comparison, sizes of the fish caught today.
Fewer larger fish (within limits) has nothing to do with the long term sustanability of a fishery. As larger fish are caught smaller fish benifit through less competion for food and less predation. In fact maximum sustainable yield is reached when the breeding stock is fished down to 30-40% of the unfished population.He also speaks of the massive Cod catches from the past, which virtually destroyed the whole Cod fishery.
Is that murray cod? More likely the cause of their decline is degradation of their environment, not fishing. Also note that commercial fishing for them is now banned. http://www.ted.com/talks/sylvia_earle_s_ted_prize_wish_to_protect_our_oceans.htm...Secondly, another TED talk, this one from Sylvia Earle, with an impassioned plea for the world to recognise the importance of ocean bio-diversity, and to create marine parks, of the magnitude of between 10% to 30% of the ocean, to try and give the ocean a chance to heal itself, as the fraction of 1% currently protected, will not be nearly enough to do the job.
There are other ways of protecting it besides locking it up. Sure these are a bit airy fairy to most people, but if you really listen to what they have to say, they do not make outlandish claims for political goals, they just care deeply about humanity, and recognise that humans cannot survive, without healthy oceans.
Sylvia Earle used the analogy of an astronaut getting to know, understand, and appreciate his life support systems, as being his most critical task, and suggests we must do the same, by recognising the importance of a healthy ocean for a healthy planet, or as she says, "No Blue=No Green".
Quote:Mozz, what do you think of my idea of targetting shore based fishermen with the benefits of marine parks? Some examples:
http://www.ozpolitic.com/fish/marine-park-examples.html
I like that idea, I think that land based fishermen are not the bad guys in this scenario, and they actually provide a great many financial benefits for many communities, as well as being a wholesome, active recreation that has many benefits for the individuals involved.
So why target recreation boat fishermen? They have to abide by the same bag and size limits. What about all the jobs in the boating industry?As Sylvia Earle pointed out, 90% of the world's populations of 'Large Fish', have been wiped out over the last 50 to 100 years, and we know that it is not land based recreational fisherman that have caused that decline.
The 90% figure is another Boris Worm effort and has been disputed by fisheries scientists. [
I wish it were that simple FD, but I fear that you give more credit to people than they deserve. The fishery that I am most familiar with, was one where all the commercial fishermen were licensed, and had to commit to size restrictions, and seasons, but the simple fact is that it is their living, and if they can make more, by taking more, they will.
Tomorrow is somebody else's problem.
I watched catch sizes decline, average fish sizes drop, and greater effort go in to catch more of what was left, all by people who payed very big money for their licenses.
In fact, if anything the buying of licenses just seemed to provide them with a belief that the ocean owed them, and they were gonna do whatever they could to collect on that debt.
There was huge concern when the Marine Parks issue was first raised, and the opposition from the local fishermen was both strident, and unanimous.
They managed to get the boundaries reduced, to exclude most of their traditional fishing area, apart from a small section near the twelve apostles. Two spots popular with surf fisherman were also excluded in the park, to allow continued recreational fishing from the beaches with the easiest access.
For now. Wait for the next review where there will inevitably be moves to expand the green zones.The spread of the Abalone Virus along the coast here, has seen abalone fishermen calling for a total ban of any recreational activities along this coast, once more highlighting that the local fishermen have only one interest, and that is self interest.
Time and time again, commercial fisheries show no interest in any conservation plans, except to oppose them, until it becomes a matter of self interest.
It would be nice to see a third option, do you guys have any suggestions? [/quote]
The status quo (ie without marine parks) is not too bad. Ie with the least fished waters in the World and a lot of stocks on the way due to reductions in the fishing effort.