Wednesday, March 23, 2011

The Rainbow Trout


The rainbow trout is part of the salmon family and valued as a hard fighting game fish.  They average 20-30 inches long and average 8 pounds in weight.  The rainbow trout generally lives to be between 4 and 6 years old.  The largest rainbow trout recorded was 57 pounds and around 11 years old.

Rainbow trout are native to North America in Alaska, California, Oregon, Alberta, and British Columbia.  Rainbow trout have been introduced all around the world and in many states including
http://nas.er.usgs.gov/queries/FactSheet.aspx?speciesID=910

Maine, New Hampshire, Massachusetts, New York, and Virginia.  Rainbow trout were introduced into springs and streams for people to sport fish.  Because it's such a popular species to sport fish, many places frequently stock rainbow trout in order to replenish populations.

Rainbow trout have had some impact on the habitats they are released into.  Rainbow trout will hybridize with other trout species affecting their genetic integrity.  Also rainbow trout will consume native fish and compete with other native fish for food.  Rainbow trout have also been known to drive out non-game fish out of their respective areas and into open water which makes them vulnerable to predation.  To help this problem plans have been put into place to restore and sustain the native fish to the areas where rainbow trout were introduced.


http://www.austinpost.org/files/articles/Rainbow-Trout.jpg

Tuesday, March 1, 2011

Snow Leopards Threatened by Global Warming

Snow leopards, known for their beautiful and thick fur coat which serves as camouflage from their prey.  The snow leopard has wide paws which act as snowshoes and the tail helps the leopard balance.  Snow leopards are well adapted to cold weather and dry habitats, which they live in.  Snow leopards are found at altitudes of 9800 - 17,000 feet in the mountains of central Asia.

Due to the snow leopards reclusive nature it is hard to determine the exact number in population.  There's an estimated 3500-7000 snow leopards in the wild, with 600-700 in zoos around the world.  60% of the population is in China with the rest ranging from Afghanistan to Kazakstan, Russia to the North and India to the east.

Snow leopards are facing a very distinct threat from global warming.  Generally the snow leopards habitat ranges from where the tree line stops to where the snow line begins on the mountain.  Due to global warming the snow line is receding making the snow leopard have to move to higher elevations.  The higher they go, the less vegetation there is, which means there's less herbivores for the leopard to prey on.  Snow leopards are also illegally hunted for their fur coats and pelts, which are a commodity in Russia, Central Asia, and Eastern Europe.  Their bones and body parts are also used for traditional Asian medicine.  The snow leopard was placed on the endangered species list in 1972.

http://www.defenders.org/wildlife_and_habitat/wildlife/snow_leopard.php

  


Tuesday, February 8, 2011

Species of Special Concern

Species of special concern are not necessarily creatures that are threatened.  Species of special concern are animals that require "special protection, recognition, or consideration because it has an inherent significant vulnerability to habitat modification, environmental alteration, human disturbance, or substantial human exploitation which, in the foreseeable future, may result in its becoming threatened."



  
These animals of special concern aren't exactly low in population but have shown signs of decline in population.  Due to pollution, poaching, environment destruction, and other actions that started to cause these animals to decline in population.  Therefore actions were taken in advance to protect these animals before they become threatened or endangered.


ANIMALS - 
SPECIES OF SPECIAL CONCERN 
AMPHIBIANS
Florida bog frog 
Georgia blind salamander 
Gopher frog 
Pine barrens treefrog 
BIRDS
Black-crowned night heron 
Black skimmer 
Glossy ibis 
Great egret 
Great white heron 
Least bittern 
Limpkin 
Little blue heron 
Osprey 
Reddish egret 

Roseate spoonbill                                                   
Snowy egret 
Tricolored heron 
White ibis 
Yellow-crowned night heron 
CRUSTACEANS  
Black Creek crayfish 
Panama City crayfish 
Santa Fe cave crayfish 
FISH 
Bluenose shiner 
Harlequin darter 
Lake Eustis pupfish 
Shoal bass 
Suwannee bass 
Tessellated darter                                                       
MAMMALS 
Eastern chipmunk 
Lower Keys marsh rabbit 
Sherman's short-tailed shrew 
REPTILES 
Alligator snapping turtle 
American alligator                                                
Barbour's map turtle 
Suwannee cooter

http://plants.ifas.ufl.edu/guide/endanger.html

(Animals listed in bold are the animals in the pictures.)













Wednesday, January 5, 2011

The Golden Lion Tamarin

The video to the left is a short video about a species of monkey called golden lion tamarins native to the Atlantic Coast forests of Brazil.   Golden lion tamarins live in thick forests and require a high canopy with a copious amount of tangled vines.   Other then providing a home for the tamarin  the canopy and vines also serves as protection from predators.  The main predators of the tamarin are birds of prey, snakes, and big cats like jaguars and tigers.   The vines also serve as a source of food, including rainwater and insects that gather in the vines.  Tamarins also eat a variety of fruit.
In 1982 the species was listed as endangered and in 1996 listed as critically endangered.  Logging and agriculture forced the tamarins to isolated habitats and inbreeding, two things that can cause extinction.  By 2003 a new population reserve helped move the golden lion tamarin from critically endangered to endangered.  Several reserve programs have been put into place in order to help rise the wild population and maintain a large population in zoos.

http://upload.wikimedia.org/wikipedia/commons/1/10/Leontopithecus.rosalia-01-ZOO.Dvur.Kralove.jpg