Blessings of the Commons

The Economist reports that Spanish fisherman want to establish a fishing reserve out of self interest:

One study of marine reserves in St Lucia and Florida showed that catches by adjacent fisheries increased by around 50%, and the biomass of five types of commercially exploited fish tripled in three years inside the reserves and doubled in adjacent fishing grounds. A more recent study in Sicily showed that a reserve multiplied the catch by a factor of 27 in only five years.