GEOG 310 Lecture Notes - Lecture 20: Exclusive Economic Zone, Fisheries Science, Habitat Destruction
Document Summary
Large marine ecosystems: fish that live in oceans, how do we define where the fish are, areas on coastal and continental. Relatively large: distinct from other parts of the ocean because it has higher productivity. Exclusive economic zones: legal definition; full sovereignty of a nation is extended to the sea(19km) of the coast. Resources(200 nautical miles) beyond each nation"s coastline: zones/areas overlap a lot. Better fish location technology: new fisheries science models. Crashes" in fish populations: not gone extinct, but large catch one year, none the next, due to overfishing and changese in ocean conditions, california sardine stocks(1940) Important for feeding other fish, consumption and oil. No limits in 1940"s, loads of sardines were caught. Work dependent on amount of fish: peruvian anchovy(1970, newfoundland cod. Sardine population in california: population of sardines over the long term, drilled down and had a core of sediment.
