Title: Biome Project
1Biome Project
- Desert, Chaparral, Tropical Rainforest, Savanna
- By Mark, Andrew, Rosanna, and Mike
2The Desert
3Deserts
- Deserts are found in every continent and cover
almost one fifth of Earth's land surface area.
there are four different types of deserts. There
is the Hot and Dry Deserts, Semiarid Deserts,
Coastal Deserts and Cold Deserts. - Hot and Dry Deserts are found in North America,
southern Asia, Cental America, South America, Afri
ca and Australia. - Semiarid Deserts are found in North America,
Greenland, Russia, Europe and northern Asia. - Coastal Deserts are found in North America,
Greenland, Russia and Europe. - Cold Deserts are found at the two poles. The
biggest is Antarctica and the second is the
Arctic. -
4Temperature
- There are four major types of deserts.
- Hot and Dry
- Average 20-25 C(Summer), Maximum 43.5-49 C,
Minimum -18 C - Semiarid
- Average 21-27 C(Summer), Maximum 38 C,
Minimum 10 C - Coastal
- Average 13-24 C(Summer), Maximum 35 C,
Minimum -4 C - Cold
- Average 21-26 C(Summer)/ -2 - 4 C(Winter)
5Precipitation
- Hot and Dry Deserts
- Atacama receives the least rainfall at less than
1.5 cm of annual rainfall, the Inland Sahara has
around 1.5 cm of annual rainfall but some
North American Deserts can have around 28 cm of
annual rainfall. - Semiarid Deserts
- Average precipitation at around 2-4 cm annually.
- Coastal Deserts
- Average precipitation at around 8-13 cm annually.
- Cold Deserts
- Average precipitation around 15-26 cm annually.
6Latitude
- Deserts are found at all latitudes so the range
would be 0 N to 0 S. an individual desert has
the average latitude range of 15-28. Contrary to
what many people believe deserts are not a direct
result of heavy sunlight. But an extremely low
amount of precipitation. Looking at a physical
map of the world it is apparent that deserts are
not necessarily located at the equator.
7My Impression
- Deserts always seem to have a connotation of
desolation and death. A stereotypical image of a
desert includes tumbleweeds and the skull of some
animal with antlers. But the deserts of the world
are teeming with life and the conditions of a
desert seem almost other worldly.
8Plants
- Saguaro Cactus
- The Saguaro Cactus has smooth and waxy skin that
is covered with spines. The spines grow on the
ribs of the cactus. The Saguaro Cactus thrives in
the dry and hot climates of deserts. The Saguaro
Cactus grows in the desert because it requires
little water. Its spines help keep cool, gather
rainfall and redirect winds.
9 - Palo Verde
- The Palo Verde is a shrub or small tree that has
green bark with thorns on its trunk. The bark is
green because it contains chlorophyll which
allows the plant to still continue photosynthesis
without its leaves. The Palo Verde has roots that
run very deep in order to access water in the
ground. The plant can also shed branches in
events of severe drought.
10Animals
- Desert Tortoise
- The Desert Tortoise is found in the Mojave and
Sonoran Deserts of Southern California. the
turtles has digging and burrowing abilities and
will hide in these burrows to escape heat or
cold. The Desert Tortoise lives in the
desert because it is accustomed to the plants and
climate. if the tortoise eats anything unfamiliar
it takes around 4 months for their digestive
tracts to get used to it.
11 - Desert Kangaroo Rat
- The Desert Kangaroo has hind legs that resemble
an actual Kangaroo, and the little rodent
moves like a Kangaroo too. the rat burrows and
created tunnels where they live. the Desert
Kangaroo Rat has adapted tot he low amounts of
water by gaining most of its water from its food.
they kick sand at things to see if they're alive
and they have cheek pouches that can store food
for up to four weeks. it lives in the
desert because its fur has adapted
the brownish color, its adaptations allow it to
store water and it needs dry dirt and sand to dig
into.
12Abiotic Factors
- Temperature
- Deserts are known for high temperatures but in
the night the heat escapes back into the
atmosphere. The huge temperature ranges of day to
night force its species to adapt to both.
- Water
- The desert is a very dry biome.
It's annual precipitation is minimum and the
desert temperatures evaporate - any remaining water on the surface. The lack of
water forces its species to develop ways of
storage and conservation.
13Disturbances
- Let's say there is a volcanic eruption and it
covers the a certain desert. All life would be
temporarily destroyed, immediately following the
eruption. However, once the soot and ash has
cooled down secondary succession would begin. the
plants would thrive well in the ash because it's
not a huge variation from the type of ground the
plants are already in. And the addition of
nutrients from volcanic ash would also
be beneficial to desert plants. the animals on
the other hand would be all killed, but if their
are eggs buried deep beneath the ground or some
animals that are burrowed perhaps they could
survive. and the various bird species would be
fine too, they can fly away during the eruption.
14Chaparral
15Climate and Location
- Average TemperatureTemperatures are subtropical
with the cold ocean influence. The climate is
characterized by a cool wet winter, and hot dry
summers. California is one of the five places
where plants like this grow. Temperature usually
between 10 and 40 degrees Celsius. - Rainfall totals under 10 inches per year so
drought is often an issue. This property of
chaparral actually qualifies it as a desert. - Hold more than 20 of the earths plant diversity.
In latitude range about 53 to 65 degrees North in
the coastal range but the mountain range is at 32
to 60 degrees north.
16Impressions
- The chaparral Biome, although the plants which
grow there are not very exotic, it has a very
temperate climate with little rainfall. Because
it is sub tropical with a cold ocean influence,
temperatures never reach unbarable extremes. Its
little rainfall and nice weather make it a good
vacation spot, but it would not be a great place
to live. Life there is very mundane, especially
in the plants. There are also natural desturbance
dangers, which constantly threaten its
inhabitants. Wildfires are common because there
is less then 10 inches of rainfall per yeaar,
thus the plants that live there are acclimated to
this amount of precipitation, which makes them
dry, and scrubby. It catches on fire very easily.
17Plant Species
- Artemisia California Artemisia California or
California Sage Brush is an aromatic plant about
2-4 feet in height. Its leaves have a scent that
can be used as an insect repellant. The brush
prospers on steep coastal slopes, and rocky
ridgetops, where it can be exposed to extreme
drought.. The drought characteristic of Chaparral
from direct sunlight, and little rainfall causes
it to loose its leaves. The brush typically
prevents other vegetation from growing in
proximity. A plant with dark green, aromatic,
triangular leaves. - Black Sage The Black Sage plant has a black,
aromatic, triangular leaf. It is very susceptible
to dry climate, which is why it is the only stuff
that can grow in Chaparral.
18- Oceanlight.com
- Larnerseeds.com
19Animal Species
- Butterflies Between 150 and 200 hundred
butterfly species live in rely on chaparrals
scrubby, Mediteranean like palnts to complete
their life cycle. To have a complete life cycle,
these endangered species need a cornucopia of
things to eat, and recources to raise their
young. The Mission Blue Butterfly specifically
relies on scrubby plants like buckwheat, golden
aster and wild hyacinth. Lupine is crucial to
their reproduction for it is where female lay
their eggs. The offspring can then eat the lupine
leaves as well. Since the Mission Blue
butterflies have been confined to just a few
costal sage sites and are becoming endangered,
for they can live anywhere else. - Merriams Kangaroo Rat The kangaroo rat has
specific adaptations to life in a dry climate
such as Chaparral. Its life is made possible by
its specialized kidneys, which allows it to
process the seeds that are found in the Chaparral
Biome. They eat Mesquite beans, green vegitation,
and some insects. They live in underground
burrows. They have puches for carrying seeds.
20- Calacademy.com
- Oceanoasis.org
21Abiotic Factors
- Drought Drought in Chaparral is actually so
severe that it can be classified as a desert. It
is impressive that Chaparral has so many plants
and animal species that are so accustomed to
living in areas with so little water. Everything
has adaptaitions to resist the drought. Plants
have small leaves to reduce moisture loss, and
animals, can get there water from unusual
sources.Life in Chaparral with respect to drought
is unlike life in any other Biome. - Fire Fire is so common in Chaparall that it is
actually important in plants natural life cycle.
They actually need fire to germinate. Re-growth
after a fire is typically very quick.
22Natural Disater
- Fires are very common in the chaparral Biome, and
in fact any species that is not resilient to fire
probably will not be able to live there. Even
though fire destroys virtually everything above
the ground, the plants are designed so that the
seeds, roots, and tubers are unharmed. In fact in
many of these plants extreme heats from fire
assist in the process of germination, for the
seeds drop after a fire comes. The regrowth or
succession after a fire can be summed up in two
main processes, the reseeders, and the
resprouters?eseeders produce new plants from the
seeds that get dispersed through the soil, while
resprouters grow from roots that weren? affected
by the fire. Regrowth in Chaparral begins quickly
even without any rain, starting with crown
sprouters. After the first rain, seeds begin to
germinate and succeed the crown sprouters.
23Tropical Rainforest
24Where Can It be Found?
- The tropical rain forest can be found within 28
degrees north or south of the equator in three
major geographical areas around the world - Central America in the the Amazon river basin.
- Africa - Zaire basin, with a small area in West
Africa also eastern Madagascar. - Indo-Malaysia - west coast of India, Assam,
Southeast Asia, New Guinea and Queensland,
Australia.
25Characteristic Climate
- The temperature in a rain forest rarely gets
higher than 93F or drops below 68F - Typical precipitation can range from125 cm to
660 cm yearly - It rains nearly a quarter of the time, but since
the majority gets blocked by the large areas of
canopy, only a portion can reach the soil.
26Characteristic Climate
- Has a rainy, cool summer but a warm spring.
- The air is oppresively humid and sticky because
the environment is hot and wet (Imagine living in
a steam room) - The average humidity is from 70 to 90
27Humidity
- The moisture of the rainforest from rainfall,
constant cloud cover, and transpiration (water
loss through leaves), creates intense local
humidity. - High humidity of air traps warmth and helps
temperature remain stable all year long which
allows most rainforest trees to be
evergreenkeeping their leaves all year and never
dropping all their leaves in any one season
28Soil
- Soil in the tropical rainforests is very nutrient
poor. The topsoil is only one to two inches (2.5
to 5 centimeters) deep - Plants store the nutrients in themselves rather
than getting them from the soil - Heavy rain washes minerals out of the soils,
leaving them acidic and nutrient poor.
29Plant Species Bougainvillea
- Bougainvillea prefers a tropical climate because
it likes to cling and grab onto other plants to
reach the sunlight. - It can tolerate semi-shaded areas and it can also
tolerate full sun, but it tends to climb upward
towards the sun - It doesnt like swampy soil which is not common
in tropical forest because water drains fast in
tropical forest
30Plant SpeciesDurian Tree
- It grows in lowland rainforests, and is native to
Borneo, Indonesia and Malaysia - Scientists think it is one of the first plants to
rely on animals to disperse its seed. - It is dependent on a small nocturnal bat, called
the Dawn Bat, for its pollination. Without the
bat the durian cannot fruit
31Animal Species Dawn Bat
- The Dawn Bat is a small Southeast Asian
rainforest bat which lives in the mangrove and
lowland forests - Dawn Bats roost in limestone caves and are only
active at night - Main pollinators of many rain forest trees
- Their favorite flowers are from the Durian trees
whose flowers are large and waxy and only bloom
at night
32Animal SpeciesHarpy eagle
- It lives in the tropical lowland rainforests of
Central and South America, southern Brazil and
the northernmost parts of Argentina - It hunts about 19 species of medium sized and
large mammals that live in trees - It hunts by sitting quietly and listening for
prey for long periods of time in the canopy of
the forest, then pouncing on their prey in short
bursts of speed - Harpy eagles need large tracts of forest to hunt
in.
33Recovery From Forest Fire
- If a big forest fire destroys all the vegetation
in the forest, the soil will remain intact
although not rich. - Secondary succession occurs
- The earliest plants to recolonize are mainly
herbaceous plants whose seeds are carried to bare
soil by wind and animals. - The earliest herbaceous plants make the soil
fertile and suitable for later larger plants - Larger plants settle in and compete with earlier
species - Eventually Large plants dominate the area and the
nutrient level of soil lowers again
34Savanna
35Climate and Location
- Temperature range 20? - 30? C
- Annual precipitation 100-150 cm rain
- Latitude African Savanna between latitude 15?
North and 30? South
36Impresions
- The savanna is large, open grassland scattered
with trees. The savanna is warm year round, the
temperature varying slightly between its long dry
winter and its shorter wet summer. The savanna is
home to a number of large herbivores and the
large predators that eat them, as well as some
smaller species.
37Plants
- Senegal Gum Acacia found in the African grassland
savanna. The Senegal gum acacia grows only in the
savanna because it grows best in sandy soil and
requires 12-15 inches of rain a year, it would
not be able to survive in a place that was wetter
or dryer than the savanna. - 2. Elephant Grass is found along lake and river
beds in the savanna. It requires the richer soil
of the lake and river beds and is killed by a
light frost, making the warm savanna a perfect
place for this plant to grow.
bidorbuy.co.za
Hear.org
38Animals Lion
- Lions are one of the main predators of the
savanna. Lions ecological niche includes medium
to large game as food, small amounts of water,
and open space in which they are able to hunt as
a group. Lions live in the savanna because the
savanna is a large open space in which many large
game animals live. Other biomes do not have
either the open space necessary for group hunting
or lack large prey animals.
39Animals Bush Elephant
The Savanna or Bush Elephant is another species
found in the savanna. The savanna elephant is a
herbivore that eats grasses, fruits, tree leaves,
bark, shrubs and vines. (Savanna Animals, Blue
Planet) They require lots of food and they
require bodies of water to drink and to help keep
them cool. They live in the savanna because the
large expanses of grassy land provide the huge
quantities of food they need as well as small
bodies of water, however spread out they may be.
The large amounts of open land allow elephants
are able to travel to new pastures and new water
as they consume the resources in a certain area.
40Abiotic Characteristics
- The warm temperatures and seasonal rainfall are
two aboitic factors that characterize the
savanna. The year round warm temperature sets the
savanna apart from biomes to the north and south
which experience a more dramatic change in
temperature during the year. The seasonal rain
sets the savanna apart from other biomes that are
warm year round, such as the rainforest. The
temperature and rain fall set the savanna apart
from other biomes, as well as shaping the
ecosystems that will flourish in such a climate.
These two factors, more than the other abiotic
factors of the savanna, dictate which plants will
and will not survive, the plants in turn ensure
the survival of some animal species and the
inability for others to survive on the savanna.
41disaster
- Fire is a common occurrence in the savanna,
caused by dry grasses and lightening many of the
plants of the savanna have adapted to the
conditions and are fire resistant. After such a
fire the succession of plant re-growth, excluding
the plants not harmed in the fire, would begin
with the small grasses. The grasses would be
followed by larger grass plants and shrubs, and
then finally by trees.
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