LibGuides: Earth Day at the NSU Libraries: Endangered Species

What Is an Endangered Species?

The National Geographic Society defines an endangered species as "a type of organism that is threatened by extinction."

Species are classified into one of seven levels of conservation, which represent different threat levels. In order of increasing severity, the levels are:

Least concern
Near threatened
Vulnerable
Endangered
Critically endangered
Extinct in the wild
Extinct

Source:

Endangered Species (National Geographic)

Websites

Endangered Species
Information from the U.S. Fish & Wildlife Service.
Endangered Species (Oklahoma Historical Society)
from the Encyclopedia of Oklahoma History and Culture.
Endangered Species Act
Information from the U.S. Fish & Wildlife Service.
Endangered Species Act of 1973
Link to the full text of the law.
Endangered Species Directory
Information from the World Wildlife Fund.
Find Endangered Species
Searchable database from the U.S. Fish & Wildlife Service.
History of the Endangered Species Act
Background information on the Endangered Species Act.
Oklahoma Department of Agriculture, Food and Forestry
The website of the Oklahoma Department of Agriculture, Food and Forestry.
Oklahoma Department of Wildlife Conservation
The official website of the Oklahoma Department of Wildlife Conservation.
Oklahoma Ecological Services Field Office
The web site of the Oklahoma Ecological Services Field Office.
Protecting Endangered Species from Pesticides
Information from the Environmental Protection Agency (EPA).
Protecting Endangered Species from Pesticides (Brochure)
Printable brochure from the Oklahoma Department of Agriculture, Food and Forestry.
Threatened and Endangered Species
Oklahoma Department of Wildlife and Conservation.
What is the difference between a threatened and endangered species?
Differences and definitions per the National Oceanic and Atmospheric Administration (NOAA).
Wild Aid
Site geared toward protecting wildlife.