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Characteristics of Species Prone to Extinction

Characteristics of Species Prone to Extinction. Amphibians. 38% of US amphibian species in decline Reasons: 1. Habitat Loss 2. Pollution 3. Disease. Bird Statistics. 9,800 known bird species 70% are declining in number. 10 Most Threatened Bird Species. Ivory-billed woodpecker

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Characteristics of Species Prone to Extinction

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  1. Characteristics of Species Prone to Extinction

  2. Amphibians • 38% of US amphibian • species in decline • Reasons: • 1. Habitat Loss • 2. Pollution • 3. Disease

  3. Bird Statistics • 9,800 known bird species • 70% are declining in number

  4. 10 Most Threatened Bird Species • Ivory-billed woodpecker • California Condor • Whooping Crane • Gunnison Sage-Grouse • Kirtland’s Warbler • Piping Plover • Florida Scrub-Jay • Ashy Storm-Petrel • Golden-cheeked Warbler • Kittlitz’s Murrelet

  5. Bird Migratory RoutesNational Refuges help to protect wetlands along bird migration routes

  6. Causes of Endangerment

  7. Habitat Loss #1 Cause

  8. Habitat Loss • Common problem: habitat fragmentation

  9. Habitat Loss

  10. Habitat Degradation - Pollution

  11. Invasive Species

  12. Invasive Species • Group 1 – Chinese Privet & Snakes in Florida • Group 2 – Wisteria & Wild Boar • Group 3 – Tamarsik & Grey Squirrel (in Europe) • Plants: Chinese Privet / Japanese kudzu / Chinese Wisteria / Bamboo / Hydrilla / Eurasian Milfoil / Mimosa / • Animals: grey squirrel in England / snakes in Florida / Wild Boar / Snake Fish / carp

  13. Role of Introduced Species • Accidental • Food crops • Livestock • Control Pests • Pets • Game - Hunting • Ornamental

  14. Modes of Transmission • Stowaways on aircraft • In the ballast water of tankers • Hitchhikers on imported products • Asian Carp http://www.youtube.com/watch?v=yS7zkTnQVaM

  15. Kudzu Vine • Beverages • Gourmet Confections • Herbal Remedies

  16. Fire Ants

  17. Overfishing - OverhuntingMarket Hunting

  18. Bushmeat

  19. The Rising Demand for Bushmeat • Increase in African population • Increase in logging road and access to remote areas • Increase demand by high-end restaurants • Source of income for poor people

  20. Profit of Poaching • Mountain Gorilla - $150,000 • Panda Pelt – $100,000 • Chimpanzee - $50,000 • Amazon Macaw - $30,000 • Rhinoceros Horn - $28,000 (per kg)

  21. Sale of Exotics

  22. Predator Control & Pest Control

  23. Primary Root of all Causes of Endangerment Rising Population Growth Rising Resource Use No Environmental Economic Accounting Poverty

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