tragedy of the commons a look at another systems archetype
TRANSCRIPT
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Tragedy of the Commons
A look at another Systems Archetype
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Definition
• Individuals use a commonly available but limited resource solely on the basis of individual need. At first they are rewarded for using it; eventually, they get diminished returns, which causes them to intensify their efforts. Eventually, the resource is either significantly depleted, eroded, or entirely used up.
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Early Warning Symptom
• “There used to be plenty for everyone. Now things are getting tough. If I’m going to get any profit out of it this year, I’ll have to work harder,”
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Structure
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Commons of Interest
• Land
• Atmosphere
• Oceans
• Water
• Stored Energy Sources
• Minerals
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World Population
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Air Pollution Graph
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Carbon Dioxide Graph long term
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Global Temperatures
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Marine Fisheries
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Ocean Acidification
Figure 1: Changes in Sea-Surface pH from Anthropogenic CO2 Emissions (pre-industrial to 1990s)Note: Lower pH indicates greater acidity (see Box 1: Understanding the pH Scale)
Source: Pacific Science Association, 2007
http://earthtrends.wri.org/updates/node/245
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Water Resources
http://webworld.unesco.org/water/ihp/db/shiklomanov/part'3/HTML/Fi_21.html
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Water Resources
2010
Fig. 28. Water availability by natural-economic regions of the world: 1950 - 2025.
Thousand Cubic Meters per year per capita
1950
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Minerals
• The average automobile contains more than a ton of iron and steel, 240 lbs of aluminum, 50 lbs of carbon, 42 lbs of copper, 41 lbs of silicon, 22 lbs of zinc, and more than thirty other mineral commodities, including titanium, platinum, and gold
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Minerals
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Minerals
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Minerals
Mineral commodity Amount required over a lifetimeAluminum (bauxite) 5,677 poundsCement 65,480 poundsClays 19,245 poundsCopper 1,309 poundsGold 1,576 ouncesIron ore 29,608 poundsLead 928 poundsPhosphate rock 19,815 poundsStone, sand, and gravel 1.61 million poundsZinc 671 pounds
Every American born in 2008 is estimated to use the following amounts of nonfuel mineral commodities in their lifetime for their necessities, lifestyles, and health.
Data from U.S. Geological Survey and U.S. Energy Information Administration; statistical analysis by National Mining Association. Source of information: http://www.mii.org/pdfs/CalculationofmiiBaby.pdf.
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Copper and AluminumWorld Production of Copper and Aluminum
World production - Copper World production - Aluminum
1900 1920 1940 1960 1980 2000
Year
-5E6
0
5E6
1E7
1.5E7
2E7
2.5E7
3E7
3.5E7
4E7
4.5E7
Wor
ld P
rodu
ctio
n (M
etric
Ton
nes)
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Cement, Iron, Copper and Aluminum
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Tragedy of the Commons
• An essay written by Garrett Hardin in 1968
• Primarily about population increase, but our focus will be on understanding the commons, in general.
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Tragedy of the Commons
• Go to the document Tragedy of the Commons and discuss highlighted issues.
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Management Principle
• Manage the “commons,” either through educating everyone and creating forms of self-regulation and peer pressure, or through an official regulating mechanism, ideally designed by participants.
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Beyond the Tragedy of the Commons
• Elinor Ostrom
• http://www.youtube.com/watch?v=ByXM47Ri1Kc
• http://www.youtube.com/watch?v=E5ZPGeF2ics&feature=related– Time 37:50-52:10
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Sources
• USGS Minerals Website.– http://minerals.usgs.gov/ds/2005/140/– http://minerals.usgs.gov/granted.html