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Published byTyrone Bradley Modified over 9 years ago
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Biodiversity Test Review
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Biodiversity Why important Definition 3 types Genetic Species Richness Evenness Ecosystem How does human development (building stuff) affect Biodiversity? Where does diversity come from? (result of what) If can’t adapt, what happens to species
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Niche Fundamental Realized
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Natural Selection & Evolution Process - traits (through adaptations / mututions) that allow an organism to survive and reproduce Artificial Selection Humans are breeding for desired traits Faster than natural selection Can result in “resistance” ex: bacteria that come resistant to antibiotics Genetic drift, bottle neck, and founders effect All 3 – small populations (regardless of cause) have less genetic diversity – smaller gene pool – less biodiversity More uniformity But more vulnerable
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Natural Selection & Evolution Must have genotype in gene pool before it can be expressed – one reason biodiversity is important Large pop – has __larger gene pool – _more_ stable But small pop can change more quickly Pace of Evolution environmental change – fast or slow Genetic variation (gene pool) – a lot or little Pop size – large or small Generation (reproduce) time – quicker or slower
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Species Keystone Indicator Generalist Specialist Introduced Native Non-native Invasive Exotic K vs r
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Laws Endangered Species Act CITES – Convention on International Trade of Endangered Species Taylor Grazing Act Lacey Act Marine Mammal Protection Act NEPA – National Environmental Policy Act EIS – Environmental Impact Statement
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Loss of Biodiversity HIPPCO H = I = P = C = O =
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Invasive Species Give 3 examples Why are they a problem Characteristics of an Invasive Species Characteristics of a ecosystem vulnerable to Invasive Species
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Extinction Give several examples Why are the in danger Characteristics that make species vulnerable What is 6 th mass extinction Why is fossil record incomplete Which animals are most at risk
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Forests Logging Timber Clear cutting Selective cutting Strip Cutting Tree plantations Can you log in National Forests Does govt make money? Who manages Nation Forests? What goals Fire Policy
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Rangeland Who manages Goals Can ranchers graze cattle Does fed govt make money What are risks of overgrazing
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National Parks Who Manages Goals What use allowed
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National Wildlife Refuges Who manages Goals What use allowed
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National Wilderness Area Who manages Goals Allowed use
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Size, Shape, Connectedness of Protected areas Island of Biogeography Does it apply to land Corridors What are they, are they needed, what benefit Fragmentation Edge Habitat Beneficial? Biosphere Reserves
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Protect Focus on species or habitat Human demands on resources Restoration Remediation Mitigation Prevention vs restoration
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Sustainable Use Externalities Maximum sustainable yield Tragedy of the Commons
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Residence land is expanding Fastest growing Urban sprawl Urban blight Zoning Smart growth Eminent Domain
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