http://web.pdx.edu/~rueterj/courses/esr101-200904/lecture17.html

Lecture 17 - December 3, 2009

Essential Background

Outline

  • managing forests for integrity
  • case studies of REDD
  • fisheries as an example of a CPR

Vocabulary (see this page)

Using viewers and Multiple Perspectives

  • network
  • systems
  • games

Life lessons that our grandmas taught us:

Get a Kleenex and blow your nose!

 

 
 

Managing for forest ecological integrity

  • composition
  • structure
  • function
  • as compared to its natural or historical range of variation
  • large forests and parks compared to smaller historical parks
  • report the results green, yellow, red - stoplight metaphor
  • in the context of global climate change
    • rapid change of climate doesn't allow time for the forests to adapt to new composition
    • climate models predict NH will have the climate of either Virginia or N. Carolina under low and high CO2 emission scenarios (TNC - Winter 2009)

 

network view Tierny et al 2009

Several Case Studies of REDD

  • carbon emissions from deforestation accounts for 17 to 18% of global carbon emissions
    • that's more than all vehicles (13%)
  • planting new trees counts but not cutting down forests doesn't count - until REDD
  • some countries have already preserved their forests (how can that count)
  • country (or larger) level of accounting is needed to avoid leakage
  • in Brazil, 90% of deforestation is illegal - how can that be controlled?
  • land tenure - ownership by local people is a real problem
  • Economist - although REDD has risks there are more risks with continued deforestation
    • (reverse statement of the precautionary principle - i.e. we know what we are doing is bad, try something else)

 

  • Bolivia
  • N. California
  • Indonesia

Some interesting facts:

  • young redwood forests in California that are growing can take up about 3 tons CO2 per year per acre
  • can hold 500 tons per acre total
  • a car produces about 5 tons per year
  • Pacific Corp has agreed to pay about $10/ton

 

 

case studies: The Nature Conservancy

Bolivia: Washington Post

carbon payments

Open ocean fisheries as a CPR

  • population estimates are determined from fishing effort and success
    • predator-prey model
    • can't just count the fish in the ocean
  • definition of CPR -
  • system view of the fisheries
    • growth, harvest relationship
    • concept of the maximum sustainable yield
    • Allee effect (minimum viable population size)
  • reason for harvesting
    • protein source - malnutrition
    • (compared to undernutrition)
  • mechanisms for ocean fish harvest
    • more machinery and fossil fuels
    • lower catch rate (see graph)
    • depletion of stocks
    • damage to the health of the stock
    • fishing down marine food webs
  • potential solutions
    • institutions - as suggested from CPR
      • set up iterative games
      • beneficial to cooperate
    • take some portion of the range and exclude fishing
      • marine fishing reserves

 

game viewer

wiki -economics

mvps

eoe-marine reserves

Revisit the idea about using multiple views

  • Multiple view framework
  • pluralism

 

viewers - multiple perspectives framework  

Preview of ESR 102 - Human impact

  • Topics
    • Impact of humans
    • population
    • poverty, health and the environment
    • energy resources, technology and impact
    • water resources, technology and impact
    • land resources, technology and impact
    • integrated responses to global climate change, food shortages, water depletion
  • Structured views
    • review systems & games
    • values and choice
    • risk and uncertainty
    • environmental accounting
  • Field/Lab
    • energy efficiency measurements and side effects
    • water resource technologies
    • group project: design criteria for a self-sufficient energy and water home or community