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Lecture 13B - Overview I Humans impact their environment...

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1 Overview I. Humans impact their environment - then and now II. Biodiversity & conservation III. Why conserve? A. useful products B. ecosystem services C. morality IV. Threats to biodiversity A. habitat destruction B. introduced species C. overexploitation V. How to preserve biodiversity VI. Biodiversity hotspots C. Benefits of biodiversity - Morality The loss of biodiversity = losing art, music and cultural diversity from the human experience Do we have right to destroy other species? Overview I. Humans impact their environment - then and now II. Biodiversity & conservation III. Why conserve? A. useful products B. ecosystem services C. morality IV. Threats to biodiversity A. habitat destruction B. introduced species C. overexploitation V. How to preserve biodiversity VI. Biodiversity hotspots IV. Threats to Biodiversity IV. Threats to Biodiversity A.Habitat destruction B. Introduced species C. Overexploitation A) Habitat Destruction 1) Habitat loss – making habitat unfit for non- domesticated species single greatest threat to biodiversity
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2 2) Habitat fragmentation natural landscapes broken into small patches Mt. Hood National Forest Habitat fragmentation often leads to loss of biodiversity Why?
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