Saturday, September 20, 2008

Privatizing ocean fisheries

I haven't posted for a while on fishery issues. Such concerns occupied a fair amount of my research time in the early 1980s. This article in The Economist makes the case for imposing individual transferable quotas on ocean fish stocks. 121 of the ocean's fisheries operated under ITQ's are much healthier than those not managed in this way. The specific studies are referenced here.

Ocean fisheries outside national waters are notoriously difficult to police and groups such as the Japanese cheat in dramatic, stupid and self-defeating ways on assigned quotas. But apparently 90% of fish caught are caught in national waters so that these issues of cheating can be overstated. It is, however, true that most of Australia's ocean fisheries are heavily over-exploited. Indeed ocean fisheries generally are expected to collapse by mid-century at current rates of exploitation. This is a crisis situation. Although still reversible the loss of marine biodiversity is one of the major factors reeducing the productivity of the oceans.

I always enjoy showing to students that overexploitation reduces fish yields and increases fish harvest costs. The Japanese are shooting themselves in the foot by cheating on international conservational agreements for such species as Southern bluefin tuna.


conrad said...

Just out of interest, why is that most countries are so hopeless at stopping over-fishing?

I was under the impression that decent management, like the creation of marine reserves, increases overall catches -- but these types of things exist almost nowhere.

Are fishermen really so stupid that things like this are politically unachievable?

Anonymous said...

warhammer gold warhammer money warhammer accounts tibia money tibia gold tibia item runescape accounts buy runescape accounts runescape money runescape gold runescape gp runescape power leveling runescape powerleveling cheap rs2 powerleveling runescape equipment buy rs equipment runescape runes cheap rs2 runes runescape logs cheap rs2 logs runescape items buy runescape items runescape quest point rs2 quest point cheap runescape questpoint runescape gold runescape items runescape power leveling runescape money runescape gold buy runescape gold buy runescape money runescape items runescape accounts runescape gp runescape accounts runescape money runescape power leveling runescape powerleveling tibia gold dofus kamas buy dofus kamas wow power leveling wow powerleveling runescape questpoint rs2 questpoint Warcraft PowerLeveling Warcraft Power Leveling World of Warcraft PowerLeveling World of Warcraft Power Leveling Hellgate money Hellgate gold buy runescape logs buy rs2 items cheap runescape items Hellgate London gold Guild Wars Gold buy Guild Wars Gold runescape items rs2 accounts cheap rs2 equipments lotro gold buy lotro gold buy runescape money buy runescape gold buy runescape runes lotro gold buy lotro gold runescape money runescape gold cheap rs2 powerleveling eve isk eve online isk buy runescape power leveling rs2 power leveling tibia gold tibia item runescape accounts Fiesta Silver Fiesta Gold Scions of Fate Gold Hellgate Palladium Hellgate London Palladium SOF Gold Age Of Conan Gold AOC Gold ArchLord gold tibia money tibia gold runescape accounts runescape gold cheap rs2 powerleveling buy ArchLord gold DDO Plat Dungeons and Dragons Online Plat