Lecture 9: Species loss, ecosystem management and reserves

Tue, Feb 2, 2010

	1. Losses and protection	Reading for today was Chapter 10.
	2. species recovery efforts
	3. the "precautionary principle"
	4. list of important concepts in Chap 10
	5. amplify and add-to concepts

 

1. Species loss

protection

• threatened - may decrease in level to become endangered
• endangered - may become extinct
• Endangered Species Act
• market forces

loss - major drivers of loss and extinction

• H - habitat
• I - invasives
• P - population (human)
• P - pollution
• C - climate change
• O - over exploitation

habitat

• loss of area
• degradation of quality
• fragmentation
  • network connectivity (more in next lecture)

2. Efforts to preserve species

gene or seed banks

• Berry Botanic Garden
• restoration efforts require banks of native seeds

breeding and reintroduction efforts

• Oregon Zoo
• silverspot butterfly
• tamarin
• condors- seminar on Friday 1/29 about condors
• video

 

3. The precautionary principle

decision standard that may apply

 

4. List of important concepts from Chapter 10

• ecosystem services from forests and how to value these
• forest harvest cycle and technologies
• deforestation extent and effects
• managing forests
• managing grasslands - how is this different that managing forests
• creating reserves
  • for what purpose
  • compared to forests and grassland management
• ecosystem approach to saving biodiversity
  • biodiversity hotspots
• ecosystem restoration
  • several examples

5. Amplify and Add to some selected points

Theme: many ways of looking at natural resource management and the importance for the community

A. Forest use models

• Ecotrust is leading this effort.
• http://www.ecotrust.org/forestry/investment_strategy.pdf

B. Wangari Maathai

• The Green Belt Movement
• other aspects of that movement (triple bottom line)
• environmental stewardship and governance

C. Reserves and Refuges

• forest management for trees or for saving biodiversity or both?
• TEK - sacred groves
• value of refuges in stabilizing harvest

D. Hotspots

• Myer's description
• local, social issues
• need to include local interests

E. Ecosystem restoration

• adaptive scientific management
• co-evolutionary approach - Norgaard
• level of power applied
  • minimal - direction of current community
  • medium - intermediate disruption
  • heavy - large scale disruption or "reset"
• goals is to have a sustainable resources
  • intergenerational
  • very difficult path