Environ- readings - POLY MERS ARE FOREVER: -process of...

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POLYMERS ARE FOREVER: -process of upwelling makes coats more nutritious for fishing -plastic bags are a big % of garbage patches (we should start using reusable bags) -an isolated area in the middle of the pacific ocean is polluted- it’s not harming us now but it will at some point -fermaldyhyde: polymer in plastic- very strong, doesn’t break down easily -no sign that plastic is biodegradable in the ocean -the waters/tides break plastic down into tiny pieces just as rocks sand -certain combos of chemicals can’t be broken down naturally: pollute environment -William Rathje- studies garbage in Am- says plastic not responsible for landfills but paper and and construction debris. Says paper doesn’t biodegrade underground GULF SPILL: -Wetland loss in Lousiana due to putting channels in rivers to decrease flooding -affected coastal animals- crabs, mussels, snails -gulf can tolerate oil- gets rid of oil on its own, oil seeps in each year -reduced through evaporation, dispersal over large areas, oil-eating bacteria -unknown: oil deep underwater- can’t metabolize/degrade. Happens when dispersed and then pushed underwater. -doesn’t affect coastal marshes too much- only penetrates 10-15 feet inside of marsh -may be a long term affect we don’t know about- haven’t studied it enough- there’s cleanup immediately afterwards but no follow-up SAVING OGALLA AQUIFER: -depleting because of overuse (mostly for irrigation for agriculture) -once had more water than all great lakes combined, now covers 1.5 ft of U.S. where great lakes cover 9.5 ft -Originally, the water came from glaciers- Now, cannot refill with glacier water -corn makes most profit, but takes most water -trying to figure out new ways to farm w/ less water: -infrared- plants get water when they need it -plants that need less water (like sunflowers) -dryland farming: leave crop residue in ground to reuse Case studies of “FLOW” El Nito: - World Bank forced Bolivia to privetize water source - Poorest ppl pay most for bucket of water - 1/10 kids die- usually due to contamination in water - unprivetized water is unusable India: -Using underground aquifers to prosper -Government claimed water was theirs- should be a free resource S. Africa: -Poor ppl forced to pay for water with prepaid cards
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-Ogalla Aquifer: ^ ^ “ -Nestle: Water bottle comp any in Mich- did not p ay for water they pu mp ed to put in
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This note was uploaded on 02/03/2011 for the course ENVIRON 201 taught by Professor Jimdiana during the Fall '08 term at University of Michigan.

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Environ- readings - POLY MERS ARE FOREVER: -process of...

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