Characteristics of Species Prone to Extinction. Amphibians 38% of US amphibian species in decline Reasons: 1. Habitat Loss 2. Pollution 3. Disease.

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Presentation transcript:

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 California Condor Whooping Crane Gunnison Sage-Grouse Kirtland’s Warbler Piping Plover Florida Scrub-Jay Ashy Storm-Petrel Golden-cheeked Warbler Kittlitz’s Murrelet

Bird Migratory Routes National Refuges help to protect wetlands along bird migration routes

Causes of Endangerment

Habitat Loss #1 Cause

Habitat Loss Common problem: habitat fragmentation

Habitat Loss

Habitat Degradation - Pollution

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

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

Modes of Transmission Stowaways on aircraft In the ballast water of tankers Hitchhikers on imported products Asian Carp kTnQVaM kTnQVaM

Kudzu Vine Beverages Gourmet Confections Herbal Remedies

Fire Ants

Overfishing - Overhunting Market Hunting

Bushmeat

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

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

Sale of Exotics

Predator Control & Pest Control

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