two kinds of rain forests
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www.seasons-south-and-north-co-uk
Two Kinds of Rainforests
We hear so much about the rainforests these days, especially the Amazon
rainforest. It is the largest that remains and the best known but there are more
rainforests than the Amazon's. They exist in both hemispheres and on all
continents except Antarctica. ome ha!e been more damaged or reduced than
others " though all are at risk. It can be confusing for a child #and for an adult$%
to be told that gorillas #Gorilla gorilla%, orang"utans #Pongo pygmaeus%, or
golden"lion tamarins #Leontopithecus rosalia% are all from the rainforest but
none from the Amazon rainforest. #They are from rainforests in Africa, &orneo
and outh America, respecti!ely.% erhaps it will help to begin now an
occasional series on rainforests in the hope of bringing some clarification.
There are two kinds of rainforests on our planet( tropical and temperate. &oth
are !ital and beautiful and what remains of both is threatened with total
extinction.
http://www.seasons-south-and-north-co-uk/http://www.seasons-south-and-north.co.uk/2009/03/two-kinds-of-rainforests.htmlhttp://www.seasons-south-and-north-co-uk/http://www.seasons-south-and-north.co.uk/2009/03/two-kinds-of-rainforests.html -
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Tropical rainforests are those we hear most about in the press. They occur
near the )*uator, in the tropical regions, roughly between the +atitudes -/
and -. These rainforests are in 0entral and outh America, southern
1exico, the acific Islands, western Africa, 1adagascar, and southeast Asia.
They recei!e between 234 and 5544 mm of rain each year. They are dense
with life, ha!ing thousands of different species, many not yet described. #&y
way of comparison, there are about 644 species of birds in /orth America,
while there are more than 2444 in 7ust the &oli!ian region of the Amazon
rainforest.% Tropical rainforests produce about 849 of the earth's oxygen, and
some 39 of medicines used in the de!eloped world come from rainforest
plants. Tropical rainforests are warm, with a!erage temperatures between 4
and -80. &elow is a tropical rainforest.
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Temperate rainforestsusually occur near oceans, and are in the temperate
zones, roughly between the +atitudes 5 and 55 north and south of the
)*uator. These rainforests are found in the northwestern region of /orth
America, the southern tip of outh America, western )urope " where 7ust a few
small patches remain " Asia and Australia. They recei!e an a!erage of 2844
mm of rain per year. The giant redwood trees are from temperate rainforests.
ome of these ha!e an age estimated to be greater than 444 years. The
temperate rainforests are colder, with an a!erage temperature from 8 to 20.
&elow is a temperate rainforest.
&oth types of rainforests ha!e mists and fogs, and sometimes they are !ery
thick. &oth types of rainforests, as with all forests, ha!e been and are still
hea!ily logged. They are also burnt and cleared to gain grazing and farming
land.
:ere is a chart to make it clearer(
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