ROBERTS Download 20

ROBERTS Download 20 - Download 20 Conservation Biology...

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Download 20 Conservation Biology Principles of Biology BIOL 1543 Greig Roberts, DDS Office: SCEN 417 E-Mail: groberts@uark.edu
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2 We are now presiding over a biodiversity crisis - a rapid decrease in Earth’s great variety of organisms. Conservation biology is a goal-driven science that seeks to counter the biodiversity crisis. There are over 1.5 million species “known to science” and between 10-200 million total What is happening and why should we care? THE BIODIVERSITY CRISIS: OVERVIEW
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3 THE BIODIVERSITY CRISIS: OVERVIEW Biodiversity includes Genetic diversity , within and between populations Species diversity Ecosystem diversity Biodiversity, while valuable for its own sake, also provides food, fiber, medicines, and ecosystem services. Human activities threaten diversity at all levels .
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4 Extinct: the dodo c. 1683
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5 Stephens Island wrens c.1894
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6 Extinct: Carolina parakeet c.1918
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7 The dama gazelle Le s s  tha n 300 le ft in the   wild - 80%  de c line  in 10  ye a rs
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8 The goitered gazelle O nc e  m o s t wide s pre a d g a ze lle  in the  wo rld:  no w e nda ng e re d, b ut s till hunte d …
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9 Extinct: the scimitar-horned oryx Extinc t in the  wild, pre s e rve d o nly in c a ptivity
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This note was uploaded on 03/29/2010 for the course BIOL 1543 taught by Professor Roberts during the Spring '08 term at Arkansas.

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ROBERTS Download 20 - Download 20 Conservation Biology...

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