1 / 5

Endangered (EN): Considered to be facing a very high risk of extinction in the wild

Endangered (EN): Considered to be facing a very high risk of extinction in the wild Few in number, or facing changing environmental conditions Many countries have laws protecting these species. Siberian Tiger. Cheetah. Blue Whale. American Bison. Critically Endangered (CR):

haroun
Download Presentation

Endangered (EN): Considered to be facing a very high risk of extinction in the wild

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. Endangered (EN): • Considered to be facing a very high risk of extinction in the wild • Few in number, or facing changing environmental conditions • Many countries have laws protecting these species Siberian Tiger Cheetah Blue Whale American Bison

  2. Critically Endangered (CR): • Facing an extremely high risk of extinction in the wild. • 3071 species are considered Critically Endangered • A species numbers have decreased, or will decrease, by 80% within three generations Pygmy three-toed sloth Brown Kiwi Hector’s Dolphin Alabama Sturgeon Javan Rhino Western Lowland Gorilla

  3. Extinct in the Wild (EW): • Known only to survive in captivity or as a naturalized population (or populations) well outside the past range. Hawaiian Crow (2002) Socorro Dove (1972) Barbary Lion (1922)

  4. Extinct (EX): • there is no reasonable doubt that the last individual has died. • Hard to determine; usually only realized after several years • Sometimes a species abruptly “re-appears” • 784 extinctions have been recorded since 1500, but probably many more Golden Toad (1989; extinction linked to climate change) Dodo (late 17th century)

  5. Causes of and Threats to Extinction Natural: • Species do have a natural extinction period; average 10 million years. • Become extinct when they can no longer reproduce or survive in their habitat Human-induced: • Caused by human activities like overharvesting, pollution, habitat destruction, introduction of new predators and food competitors, overhunting, etc. Bali Tiger; extinct since 1937 due to overhunting

More Related