This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: 99% of California grassland, 91% of wetlands, and 85% of redwood forests are gone. B. Factors Which Decrease Biodiversity Environmental Stress Large Environmental Disturbance Extreme Environmental Conditions Resource limitations Invasive, non-native species Geographic Isolation Human Activities related to the above- Habitat loss and degradation; invasive species; hunting, poaching, overfishing; sale of exotic species (animal and plants); pollution; climate change? C. Value of Biodiversity 1. Instrumental Value- usefulness to us a. Utilitarian Uses - Economic Goods- Food, fuel, fiber, medicines, etc. -Ecological Sservices- Nutrient recycling, pollination of crops, soil maintenance, pest control, absorption and detox of pollutants, purification of air and water -Information- genetic information, educational info by studying -Recreation b. Non-Utilitarian Uses- We find value in its existence 2. Intrinsic Value- Inherent value and right to exist beyond usefulness to us....
View Full Document
This note was uploaded on 08/28/2008 for the course BIOPL 2400 taught by Professor Silva,t. during the Fall '08 term at Cornell.
- Fall '08