1 / 19

Exploring Biodiversity: Importance, Types, and Impact of Human Development

Learn about the significance of biodiversity, genetic variety, species richness, and the effects of human activities on ecosystems. Understand natural and artificial selection, genetic drift, and the role of genotype in evolution. Discover the concepts of keystone species, invasive species, and extinction threats. Explore forestry practices, national conservation policies, and sustainable resource management. Delve into the challenges of protecting endangered species, managing national parks and wildlife refuges, and promoting sustainable land use practices for a harmonious coexistence with nature.

mfiler
Download Presentation

Exploring Biodiversity: Importance, Types, and Impact of Human Development

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Biodiversity TestReview

  2. 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

  3. Niche • Fundamental • Realized

  4. 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

  5. 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

  6. Species • Keystone • Indicator • Generalist • Specialist • Introduced • Native • Non-native • Invasive • Exotic • K vs r

  7. 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

  8. Loss of Biodiversity • HIPPCO • H = • I = • P = • P = • C = • O =

  9. Invasive Species • Give 3 examples • Why are they a problem • Characteristics of an Invasive Species • Characteristics of a ecosystem vulnerable to Invasive Species

  10. Extinction • Give several examples • Why are the in danger • Characteristics that make species vulnerable • What is 6th mass extinction • Why is fossil record incomplete • Which animals are most at risk

  11. 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

  12. Rangeland • Who manages • Goals • Can ranchers graze cattle • Does fed govt make money • What are risks of overgrazing

  13. National Parks • Who Manages • Goals • What use allowed

  14. National Wildlife Refuges • Who manages • Goals • What use allowed

  15. National Wilderness Area • Who manages • Goals • Allowed use

  16. 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

  17. Protect • Focus on species or habitat • Human demands on resources • Restoration • Remediation • Mitigation • Prevention vs restoration

  18. Sustainable Use • Externalities • Maximum sustainable yield • Tragedy of the Commons

  19. Residence land is expanding • Fastest growing • Urban sprawl • Urban blight • Zoning • Smart growth • Eminent Domain

More Related