lecture_0201

lecture_0201 - BIODIVERSITY AND CONSERVATION BIOLOGY 1...

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BIODIVERSITY AND CONSERVATION BIOLOGY 1 February 2011
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Objectives Address questions from last class Discuss key issues in conservation biology: What is biodiversity? Why do we care about it? How do we protect it?
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Invasive species damages Mammals losses/damages control costs total Wild horses and burros 5 NA 5 Feral pigs 800 0.5 800.5 Mongooses 50 NA 50 Rats 19,000 NA 19,000 Cats 17,000 NA 17,000 Dogs 620 NA 620 All values in millions of dollars
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r- vs. K- selected species Continuous spectrum Use despite criticism
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Biodiversity Types Value Threats
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Distribution of species
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Distribution of biodiversity Latitudinal gradient
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Benefits of biodiversity Ecosystem services Ecosystem function Food security Drugs and medicine Direct economic benefits (ecotourism)
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Past extinctions
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Biodiversity loss Causes of population decline: Habitat alteration Invasive species Pollution Overharvesting Global climate change
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Biodiversity hotspots
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Conservation biology Definition Key concepts
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This document was uploaded on 05/16/2011.

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lecture_0201 - BIODIVERSITY AND CONSERVATION BIOLOGY 1...

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