Biomes
By: Trinidad
By: Trinidad
GenoveseGenovese
Savannas
A savanna is a grassland in which there are shrubs and
isolated trees. Trees are isolated and not in a forest
because there is not enough rainfall in a savanna for it.
Savannas temperature is warm and they have two different seasons: dry
season, in winter, and a really wet season, in summer.
Dry season
Wet season
very few rain (average of 4 inches)
lots of rain (average of 15 to 25 inches)
cool (not cooler than 21°c)
hot and very humid
Human Impacts
Animals
Vegetation
Most have longs wings or
legs so they can be able to
go on long migrations.
Many of they stay under the
ground so they can avoid the
heat or raise their babies
They are highly specialized
to survive to long periods of
drought. Their roots are long
so that they can reach the
water that is really under the
soil, they have thick barks so
that they resist fires. The
grass is different in different
parts so animals eat
depending on what they like.
The main human impact on
savannas is that there live native
people who are nomades. They
farm in one place, cultivate and
then to other area. This benefits the
soil because it is not used, meaning
it will recover and will still be useful
in the future.
Other human impact is tourism.
People do safaris to get to know the
place while being in contact with it.
Tropical Rainforest
A tropical rainforest is a forest where there are
Animals
Vegetation
really tall trees and its temperature is warm.
Many different kinds of
monkeys.
Some characteristics
present on animals living
there are bright colors and
sharp patterns, loud
vocalization and a diet
heavy on fruits.
has more kinds of trees
than any other area in the
world. It has more than a
hundred species.
Most of the trees have
straight and are higher
than 100 feet or even
more.
Many trees can only be
identified by their flowers.
Leaves are very large so
that they can absorb as
much light as possible
Its temperature is between 34° and 20°.
Rainfall there is more than a hundred inches per
year. And its humidity is between 77 and 88% .
They are very important because a half of the
world’s vegetation is there, meaning it provides
a lot of oxygen, necessary for human life.
Human impact on rainforests
Deforestation is the main human impact of rainforests.
Every year over 90,000 square miles of the forest are
harvested for human use. Apart from
destroying the environment, deforestation is proved
to accelerate global warming leading
to a climate change in the rainforest
layers of rainforest
Temperate
rainforest
This kind of forests are found in North
and South America.
There it rains between 60 and
Human Impacts
200 inches of rain per year.
Summers are extremely hot (more than 80°f) and Winter is
really cold, sometimes even snows.
animals
vegetation
mammals like (bears, deers, coyotes)
big coniferous trees
big slug variety
mosses and lichens
Timber cutting is the number one
threat of these forests. If it is done
wrongly it can cause erosion of the
soil, destroying it.
Deserts
Vegetation
Animals
Cold
-widely
scattered plants
-pretty covered
ground
-most plants:
deciduous,
having spiny
leaves
-jack rabbits
-kangaroo rats
-also other
carnivores like
coyote
Hot
-rocky course
textured soils
-No surface
water
-shrubs
-short woody
trees
-small thick
leaves
-cacti
-nocturnal
carnivores
-main animals:
kangaroo rats
and burrowers
insects,
arachnids,
reptiles and
birds
Cover ⅕ of the surface of the earth.
Rainfall is less than 50 cm per year.
Deserts loose almost twice as much heat at night
Cold Desert
Hot Desert
cold winters with
snowfall
Seasons warm during
the year and very hot in
summer
high rainfall in winter and little rainfall in winter
a little in summer
mean winter t° -2°- 4°c
mean summer t° 21°-26°
c
mean t° 20-25°c, high
43.5°-49°c. They drop to
-18°c
Human Impacts
-off roading
-military exercise
Taiga
is the largest biome in the world. Very cold winters with snowfall and
summers are warm, humid and rainy. Winter average temperature
is -54°-1°c. Summer can be from -7°-21°c. Total precipitation on
a year is 30-85 cm
Vegetation
Animals
lots of coniferous trees
(pines, white spruce,
hemlock and douglas fir)
millions of insects in the
summer times
lichens and mosses
Tend to be predators
(wolverine, bobcat)
snowshoe rabbits, red
squirrels and voles and
birds
Main human impact:
Deforestation
Tundra
treeless land and the youngest biome, it was formed
10,000 years ago. Usually is very cold. Mostly all
tundras are located in the Northern hemisphere.
In winter it is cold and dark
In summer it is very soggy and the tundra is covered with
Human Impact
pollution from mines is the main human
impact on tundra. in a tundra of Russia
got so polluted that all plants had died
marshes, lake, bogs and streams. There is sunlight almost the
24 hrs
Vegetation
Animals
drop to -70°c
rocky ground
insects
Precipitation 6-10 inches per year
mosses, heath,
lichen, grasses and
400 varieties of
flowers
rodents,wolves,foxes
bears and deer
Average temperature -28°c. at night temperature can
Grasslands
Large terrains of grass, flowers and herbs.
In winter t° can be of -40°c and in summer it can be 21.1°c
Temperate
average of
rainfall per year
10-30 inches
TropicalSubtropical
average of
rainfall per year
25-60
Tall grass
Short grass
Human Impact
humid and very
wet
dry and with
hotter
summers and
colder winters
The land is being
divided for farming
and urban development.
A lot of grasslands have
disappeared because of
the building of power
plants.
Bibliography
http://www.geography.learnontheinternet.co.uk/topics/savanna.html
http://bostonsciencecommunications.com/index/wp-content/uploads/2010/08/biomes.jpg
http://www.ucmp.berkeley.edu/glossary/gloss5/biome/deserts.html
http://www.blueplanetbiomes.org/savanna.htm
http://www.marietta.edu/~biol/biomes/temprain.htm
http://www.blueplanetbiomes.org/savanna.htm
http://www.blueplanetbiomes.org/rainforest.htm
http://www.blueplanetbiomes.org/taiga.htm
http://the-taiga-biome.weebly.com/human-influences.html
http://desertbiomes.weebly.com/human-impacts.html
http://www.blueplanetbiomes.org/tundra.htm
http://www.blueplanetbiomes.org/grasslands.htm
http://grasslandsbiome3.weebly.com/human-impact.html