GEO-1330 Lecture Notes - Lecture 4: Sea Lamprey, Ecotourism, Zebra Mussel
Document Summary
1995: reintroduced; 2009: 116 wolves in park. Prey on elk and push them to a higher elevation. More beaver dams, more wetlands, more aspens. Cooperation between government and private groups and concerned individuals. 1986 2006: forests grew from 26% to 51% Goal: net carbon dioxide emissions to zero by 2021. Of land in nature reserves and natural parks global leader. Earns billion per year in tourist. Land officially designated as having no serious disturbance from human activities. 2% of lower 48 protected, mostly in west. 2 million more acres get wilderness protection. 50% increase in length of wild and scenic rivers. Concept 4 we can help sustain biodiversity by identifying and protecting severely threatened areas (biodiversity hotspots), restoring damaged ecosystems, and sharing as much of the earth"s land as possible with other species. Locate and protect most endangered ecosystems and species. 34 biodiversity hot spots rich in plant species.
