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Published byMuriel Powers Modified over 9 years ago
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Characteristics of Species Prone to Extinction
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Amphibians 38% of US amphibian species in decline Reasons: 1. Habitat Loss 2. Pollution 3. Disease
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Bird Statistics 9,800 known bird species 70% are declining in number
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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
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Bird Migratory Routes National Refuges help to protect wetlands along bird migration routes
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Causes of Endangerment
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Habitat Loss #1 Cause
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Habitat Loss Common problem: habitat fragmentation
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Habitat Loss
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Habitat Degradation - Pollution
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Invasive Species
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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
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Role of Introduced Species Accidental Food crops Livestock Control Pests Pets Game - Hunting Ornamental
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Modes of Transmission Stowaways on aircraft In the ballast water of tankers Hitchhikers on imported products Asian Carp http://www.youtube.com/watch?v=yS7z kTnQVaM http://www.youtube.com/watch?v=yS7z kTnQVaM
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Kudzu Vine Beverages Gourmet Confections Herbal Remedies
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Fire Ants
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Overfishing - Overhunting Market Hunting
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Bushmeat
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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
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Profit of Poaching Mountain Gorilla - $150,000 Panda Pelt – $100,000 Chimpanzee - $50,000 Amazon Macaw - $30,000 Rhinoceros Horn - $28,000 (per kg)
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Sale of Exotics
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Predator Control & Pest Control
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Primary Root of all Causes of Endangerment Rising Population Growth Rising Resource Use No Environmental Economic Accounting Poverty
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