BIOL 3130 Lecture Notes - Lecture 3: Henry David Thoreau, Banff National Park, Transcendentalism
27 Oct 2017
School
Department
Course
Professor
Document Summary
Extinction, altered functioning of ecosystems, reduced availability of resources, soil erosion. Humans (cid:494)may(cid:495) have been responsible for mega-fauna extinctions in the. Aristotle commented on the widespread destruction of forests in the baltic. Americas shortly after human colonization from asia about 11,000 years ago region. Barren landscapes of turkey, syria, and iran are unnatural deserts that resulted from massive exploitation of fragile woodlands. Deforestation of europe by the early18th century, forest areas maintained as private game management and royal preserves. In great britain, many of the native forests were gone by the 12th century. South western on was largely deforested between 1800-1900. Gradual landscape change results in profound transformations. Hawaiian islands: half of hawaii(cid:495)s native birds went extinct soon after the polynesians, half of the remaining species of birds went extinct after captain james arrived. We now consume a large fraction of the planet(cid:495)s resources. Consume 20-(cid:886)0% of the planet(cid:495)s annual net primary productivity.
