31 - 11/10/10 Lecture 31: Biodiversity-Why Save It?...

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11/10/10 1 Lecture 31: Biodiversity—Why Save It? Definitions – Conservation Biology – Biodiversity – Keystone species Why care about biodiversity? – Products – Services (Ecosystem functions) – Economic Values – Aesthetic and Intrinsic Values Definitions Biodiversity : The number of ________ present in an area, the ____________ they contain, and the roles they play in the ecosystem Conservation Biology : The study of threatened organisms and the process of extinction – More formally, “The study and preservation of biodiversity” One type of organisms critical for healthy ecosystems Keystone species – Those that play a central role in maintaining other species in the environment – Role is ___________________________ – An example: American alligator So, why should we save biodiversity? Ecosystem Services • Ecosystems perform irreplaceable services – A few important examples: • Wetlands clean water, prevent flooding, recharge groundwater
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This note was uploaded on 04/06/2011 for the course FNR 103 taught by Professor Staff during the Fall '08 term at Purdue University-West Lafayette.

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31 - 11/10/10 Lecture 31: Biodiversity-Why Save It?...

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