human impact eee 105 read ch. 12. human impact renewable resource e.g. forests civilization ~...
TRANSCRIPT
Human Impact EEE 105
Read Ch. 12
Human Impactrenewable resourcee.g. forests
civilization ~ deforestationwatershed management
The campaign against The campaign against logging in National logging in National ForestsForests
48% of hardwood production palettes
National ForestsNational Forests
Human Impactrenewable resourcee.g. forests
Judge Buzzcuts Timber Sales on American Forests
BENTON, Illinois, October 5, 1999 (ENS) - A small grassroots environmentalgroup has won a court ruling that shuts down timber sales on an estimated110,000 acres of U.S. National Forests across the country. This is thefirst time a federal judge has issued an injunction on the entire National Forest system. Chief Judge J. Phil Gilbert of the Federal District Courtfor the Southern District of Illinois ruled September 29 that the U.S. Forest Service acted illegally in allowing timber sales under a loophole known as the "categorical exclusion." The case was brought by Heartwood, a Bloomington, Indiana based regional forest protection network and two self-taught forest experts, Jim Bensman and Mark Donham.
Mark Rey, Under Secretary of Agriculture
for Natural Resources
Human Impactrenewable resourcee.g. forestsold-growth vs. secondary growth
Human ImpactHuman Impactrenewable resourcee.g. forestsold-growth vs. secondary growth
Human ImpactHuman Impactrenewable resourcee.g. forestsold-growth vs. secondary growth
Human Impactrenewable resourcee.g. forestsclear-cutting
Human Impactrenewable resourcee.g. forestssustainable forestlandssustainable forestlands
CowbirdHuman Impactrenewable resourcee.g. forests -- fragmentation
CowbirdHuman Impactrenewable resourcee.g. forests -- fragmentation
Dr. Scott RobinsonDr. Scott Robinson
Human Impact
ExtinctionAdapt or go extinct
e.g. the Passenger Pigeon
Human Impact
ExtinctionAdapt or go extinct
e.g. the Passenger Pigeonthe Dodo & Calvaria tree
Human Impact
Extinction
Conservationists estimate that the current extinction rate is 1,000 to 10,000 times higher than it should be under natural conditions.
Human Impact
ExtinctionWhy?
habitat destructionintroduced competitors and predators e.g. Hawaiian birds
Human Impact
Two Nenes begging