jueves, 11 de marzo de 2010

Yellowstone National Park




Type of ecosystem, geographical location:
It was established in 1872, Yellowstone Park is Amierca´s first national park the most popular. Located in Wyoming, Montana e Idazo. The Yellowstone was the first national park in the world. It has many types of ecosystems, but the subalpine forest is dominant.






Geology:

Yellowstone is at the northeatern en of the Snake River Plain, a great U.shaped arc through the mountains. The landscape of present-day Yellowstone National Park is the most recent manifestation of this hotspot below the crust of the Earth.


The Yellowstone Caldera is a volcanic system in North America, the caldera was formed by exceptionally large explosive eruptions.




Climate, temperatures and precipitation:

Yellowstone climate is greatly influenced by altitude, with lower elevations generally found to be warmer year round. The record high temperature was 37ºC in 2002, while the coldest temperature recorded is -54.4ºC in 1933. Buring the summer months of June through early September, daytimes are highs, normally from 21ºC to 27ºC, while nightime are lower, temperatures can go to below freezing- especially at higher altitudes. Summer afternoons are frequiently accompanied by thunderstorms.Winters in Yellowstone are very cold, with temperatures usually between -20ºC to -5ºC .


Rain and snow are possible in any month of the year. Tornadoes are strange; however in July 21, 1987, the most powerful tornadoe hit the Yellowstone National Park, that was called teton-Yellowstone tornado.






Flora:
Over 1.700 species of trees and other plants are native to the park. Another 170 species are considered to be exotic species and are non-native . For example:
  • Lodgepole Pine


  • Subalpine Fir


  • Engelmann Spruce


  • Rocky Mountain Douglas-fir


  • Whitebark Pine


  • Quaking Aspen and willows are the most common species of decidious trees.


  • Fungi



Fauna:


There almost 60 species of mammal in the park. Loke for example:


Endareged gray wolf, threatened lynks, grizzly bears, bison, black bear, elk, moose, mule deer, white-tailed deer, mountain goat, pronghorn, boghorn sheep and mountain lion


Eighteen species of fish live in Yellowstone , including the core range of the Yellowstone cutthroat trout.


In Yellowstone National Park there are also six species of reptiles, such us the painted turtle and four species of amphibians including the Boreal Chorus Frog.


311 species of birds live in Yellowstone National Park, like the common loon, harlequin duck, osprey, peregrine falcon, and the trumpeter swan



Tourism:


The Yellowstone National Park on one of the most famous parks in the U.S.A . Millions of people visit it each year. You can do several activities like for example canoening, and you can also make trips. Hunting is forbidden, however, you can practise fishing if you have an autorisation. You can´t practise alpinism and navigate through the rivers of the Park.



Members of the Group:


- Raquel Martinez


-Tania Rodriguez


-Rocio Gonzalez


-Maria Gonzalez


-Patricia Izquierdo



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