Extinct
species: recorded
extinctions since 1600
Extant species
Endangered species
Extirpated species
Threatened
species
Endangered Species Act
of 1973
Extinction of megafauna
of North America about 11,000 years ago, probably due to hunting. Included mammoths, mastodons, camels, four-horned
antelopes, ground sloths, giant beaver, dire wolves, giant jaguar,
sabre-tooth cat. The large carnivores were probably not hunted to extinction,
but starved when the large herbivores were killed off. (know ones in bold
type)
Recent extinctions in North America include the passenger pigeon (In
memorium), snowy egret, heath
hen, Bachman's warbler, Carolina parakeet, and Stellar's sea cow (a close relative
of the endangered manatees. Most of these from overhunting for food, fashion or
profit, or thought to be pests. (know ones in bold type)
Causes
of extinctions
and endangerment:
habitat destruction
exotic species
overexploitation (hunting
and fishing, including predator control)
Close calls:
American bison - Bison bones.
See more at Bison Central.
ivory-billed
woodpecker (picture) rediscovered
Currently endangered and threatened species of
Texas (a partial list): Complete
listing.
Mammals:
Birds:
Reptiles:
Amphibians:
Fish:
Edwards
aquifer: map
and cross-section
I found
this quote at http://www.wildbirds.org. It's a site devoted to the conservation of birds. It
really sums up what I've been trying to tell you.
"I am
only one. But still I am one. I cannot do everything. But still I can do
something. And because I cannot do Everything I will not refuse to do the Something that I can do." (Edward
Everett Hale)
Sites
devoted to saving species
Learn more about Texas
endangered species here: http://www.tpwd.state.tx.us/huntwild/wild/species/endang/index.phtml
Endangered species
information from the U. S. Fish and Wildlife Service: http://endangered.fws.gov
University of Michigan
endangered species update: http://www.umich.edu/~esupdate
Bat Conservation
International: http://www.batcon.org
Center for Plant Conservation:
http://www.centerforplantconservation.org/
Conservation Biology: http://www.conbio.org
Conservation Fund: http://www.conservationfund.org
Conservation International: http://www.conservation.org
Defenders of Wildlife: http://www.defenders.org
Exploitation, Conservation,
Preservation: A Geographic Perspective on Natural Resource Use. This site has
links to many others. http://www.wiley.com/college/geog/cutter018104/resources/Index.htm
The Nature Conservancy: http://nature.org
Texas
branch: http://www.nature.org/wherewework/northamerica/states/texas/
National Wildlife
Federation: http://www.nwf.org
National Audubon Society: http://www.audubon.org
Nearctica: The Natural World
of North America: http://www.nearctica.com/
Predator Conservation
Alliance: http://www.predatorconservation.org
Sierra Club: http://www.sierraclub.org
Texas Parks and Wildlife: http://www.tpwd.state.tx.us
Wild Birds Conservation: http://www.wildbirds.org
Wildlife Conservation
Society: http://wcs.org
World Wildlife Fund: http://worldwildlife.org
