Transcript Tropical Rain Forest - cmstropicalrainforestexperts

TROPICAL RAINFOREST
MRS.WALLIS CLASS
BY ETHAN CLARKE
People Of The Tropical
Rainforest
Did you know that there are about
50,000,000 tribal people living in world's
tropical rainforests? These people depend on
the forests for their food and shelter. As we
cut more and more trees and destroy more
and more of the forests, we are also killing
people. Many native tribes have been
exterminated already because their
governments failed to protect them from
logging companies, the mining companies and
the slash and burn farmers.
Animals Of The
Tropical Rainforest
The rainforest is
home to more than
half of the world's
animals. Colorful
and unusual
animals dwell in all
four layers of the
forest. All types of
creatures are
represented, from
tiny insects to large
mammals.
Emergent Layer
These giant trees thrust above the dense canopy layer
and have huge mushroom-shaped crowns. These trees
enjoy the greatest amount of sunlight but also must
endure high temperatures, low humidity, and strong
winds.
The Layers
Of The
Tropical
Rainforest
Canopy Layer
The broad, irregular crowns of these trees form a tight,
continuous canopy 60 to 90 feet above the ground. The
branches are often densely covered with other plants
(epiphytes) and tied together with vines (lianas). The
canopy is home to 90% of the organisms found in the
rain forest; many seeking the brighter light in the
treetops.
Understory
Receiving only 2-15% of the sunlight that falls on the
canopy, the understory is a dark place. It is relatively
open and contains young trees and leafy herbaceous
plants that tolerate low light. Many popular house plants
come from this layer. Only along rivers and roadways and
in tree fall and cut areas is sunlight sufficient to allow
growth to become thick and impenetrable
Forest Floor
The forest floor receives less than 2% of the sunlight and
consequently, little grows here except plants adapted to
very low light. On the floor is a thin layer of fallen leaves,
seeds, fruits, and branches that very quickly decomposes.
Only a thin layer of forest decaying organic matter is
found, unlike in temperate deciduous
Plants Of The Tropical
Rainforest
More than two thirds of the world's plant species are
found in the tropical rainforests: plants that provide
shelter and food for rainforest animals as well as taking
part in the gas exchanges which provide much of the
world's oxygen supply. Rainforest plants live in a
warm humid environment that allows an enormous
variation rare in more temperate climates: some like
the orchids have beautiful flowers adapted to attract
the profusion of forest insects. Competition at ground
level for light and food has lead to evolution of
plants which live on the branches of other plants, or
even strangle large trees to fight for survival. The
aerial plants often gather nourishment from the air
itself using so-called 'air roots';. The humidity of the
rainforest encourages such adaptations which would be
impossible in most temperate forests with their much
drier conditions.
How Is The Tropical Rainforest
We are losing Earth's greatest biological treasures
just as we are beginning to appreciate their true
value. Rainforests once covered 14% of the earth's
land surface; now they cover a mere 6% and experts
estimate that the last remaining rainforests could be
consumed in less than 40 years.
I Hope You Liked My
Power POINT
I Hoped You
Learned A Lot About
The Tropical
Rainforest
Ethan