Temperate desert PERIOD 5
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Transcript of Temperate desert PERIOD 5
Temperate Desert By: Manuela Mur
Kayla ApplebySamandra Girma
Two Names
- Temperate desert
- Cold desert
Biome Location/Climate
Location: California, Colorado,(southwest
america)abotic factors: Rain,Ph ,temperature,
sunlight levels,darkness levels,etc.
Mojave Desert (California)
Biome Location/Climate
● Temperate deserts of continental
regions have low rainfall and
strong temperature contrasts
between summer and winter.
● The temperate desert has
characteristics such as very
pronounced drought season and a
short humid season.
●Most precipitation falls in the
winter,winters are long and cold
with temperatures falling below
32
Climate Graph
Nutrient Flow Diagram
Animals
Prairie Rattlesnake
Road Runner
Desert Camel
Gila Monster
Gobi Jerboa
Botta’s Serotine
Animal Cont’d.
-Prairie Rattlesnake: in the cool spring and fall weather the rattlesnake hunts in the
daytime while the hotter summer days force it to hunt at night,predator; lives in a
desert shrub habitat
-Desert camel: stores water and fat in its large humps
- Gobi jerboa: the jerboa eats insects,plants,and seeds. Depends on its food to meet the
need for water. The jerboa will never actually drink free water throughout its life
- Roadrunner: eats rattlesnakes,lizards, and insects.
Botta’s S
erotine: f
ound in almost a
ll
habitats e
xcept fo
r true d
esert,
They are
insectivorous (e
at insec
ts). Are
NOT blind
Gila Monster: Found under rocks, in
burrows of other animals and in holes
it digs itself. Venomous lizard.
Plants
Bursage is a drought
deciduous plant, drops its
leaves in times of drought
to preserve water
Prickly Pear
Ball Cactus
Desert Spoon Cactus
Bursage plant
Prickly pear plant
has thick leaves to
store water in
times of drought
Desert spoon cactus is a
deciduous plant,. The
flowers are carried on a
stalk that comes from the
center and grows up to 12
ft.
Energy Flow
Food pyramid
Pyramid of Numbers & Pyramid of Biomass
Cont’d. Energy Flow
Cactus -> Ant -> Snake -> Fox
Food Chain
Food Web
Gross Primary Productivity/Photosynthesis/Net Productivity
● Photosynthesis occurs in desert plants by having open stomates all night.They
take in CO2 and it is stored in the form of an intermediate (converted to an acid)
and is used during the day for photosynthesis(when the stomates are closed).
Everything else is the same in other plants.
●
- Lowest plant primary productivity
of all biomes
Succession: How does it occur?● Primary succession in (temperate) deserts can happen in many places, an
example would be in a sand dune. Either bacteria or seeds find a foothold where
there is increased moisture and protection. Then roots are put down from
biofilms; this helps stabilize the upper layer of soil and also helps break down
rocks. Then, the new and improved soil can hold more moisture and support other
plants. After some repetition of this, the desert ecosystem will be able to support
grasses and woody shrubs (if there is enough water, of course).
● Secondary succession occurs when there was a previously existing community,,
but now it has been removed. In the desert, there can be a fire, a flash flood
scouring, or land clearing. Although after these things happen and succession is
set back, the soil is already developed, so it’s okay.
● Secondary succession happens much faster than primary succession
MDC: America
● Off roading, when humans run the
vehicles all over the desert soil, it
carves tracks into the soil that
messes up the land for many years.
● Humans remove fossil water from
reservoirs, and once the water is
gone it’s gone for good. (Water
Deprivation)
● Military excercises can cause
damage to the plants and the soil in
the desert.
● Trenching that deals with
underground pipelines can cause the
surface to be damaged and unstable.
This issue will take over 30 years to
fix once it has happened.
How is the destruction handled?
- People have begun to
use off-road vehicles
on specific trails and
roadways.
- Humans are learning to use existing water sources and are learning to have better control on salinization to improve dry lands.
- Humans have gained knowledge of
their destruction and are finding
better ways to rotate crops, so they
can protect the fragile soil.
Bibliography
● Society, National Geographic. "Desert Threats, Endangered Species -
National Geographic." National Geographic. N.p., n.d. Web. 21 Sept. 2016.
● "The Desert Biomes." Human Impacts -. N.p., n.d. Web. 21 Sept. 2016.
● Haneef, Deena T Kochunni Jazir. "Difference between Gross Primary
Productivity and Net Primary Productivity." Major Differences. N.p., n.d.
Web. 21 Sept. 2016.
● Bradley, Katherine. "Difference between Tropical and Temperate Deserts."
People of Our Everyday Life. Studio D, n.d. Web. 21 Sept. 2016.
● Becker, Andrea. “Ecological Succession in the Desert.” Education. N.p., n.d.
Web. 21 Sept. 2016.