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DESERT
ALEX BENVENUTI OTHER ALEX
ORLANDO SENDON
0THER Names
• Desert • Temperate Desert • Cold desert • Wasteland • Coastal Desert • Hot and Dry desert • Semiarid desert
Biome LocaBon
• Located around: – the equator – South West North America – Central Asia – Central/West Australia – South East Africa – West coast of Chile
Map of deserts
Climate • Hot and dry desert-‐
– Maximum temperature 49 degrees Celsius – Can get as low as -‐18 degrees Celsius – Soil is course-‐textured and can be rocky with good drainage – Some years can be rainless, some deserts can get an average of 1.5cm
a year, like the Sahara, others, like the Mojave, can get 28cm • Semiarid-‐
– 21-‐27 degrees Celsius in the summer during the day Bme, 10 degrees in the evening
– 2-‐4cm of precipitaBon annually – Sandy soil
• Cold Desert-‐ – -‐2 – 4 degrees Celsius in the winter, 21-‐26 degrees in summer. – 15-‐26 cm of rainfall – Heavy and salty soil
Climate Graph
Nutrient Cycle/Energy Flow
Animals/Plants
• Animals: – Lizards-‐Small predator – Snakes-‐Small predator – Kangaroo rats-‐Primary Consumer
– Tarantula-‐ Insect – Hawk-‐Larger predator – Kit Fox-‐Larger Predator
• Lible Biodiversity, small amount of nutrients supports lible life
• Plants: – CacB-‐ Stores water, Primary Producer
– Sage Brush-‐Primary Producer
– Thorn Aracias-‐Primary Producer
– Rabbit brush-‐Primary Producer
Food Web
Animals/ Plants
Succession
• Primary succession in a desert occurs on sand dunes with the growth of a pioneer species, bacteria.
• These bacteria, when sebled into a sand dune, create ferBle soil which will make room for plants to grow such as grass and cactuses.
• Secondary succession in a desert would occur if a flash flood were to eliminate all the plant life in an area but leave the ferBle soil to give the opportunity for these plants to grow back.
MDC/LDC
• MDCs such as Saudi Arabia and Australia are known for drilling for oil and creaBng large oil reserves which destroys the environment through producBon of harmful chemicals and destrucBon of natural habitats that kill important desert wildlife.
• LDCs such as Afghanistan and Pakistan have, over many years, destroyed their natural desert environment due to the need to build and expand, and year of military acBvity. The ferBle regions of their deserts have lost much of their nutrients and air quality has become very poor.
Human Impact
• Even though both LDCs and MDCs both negaBvely affect the environment, the key difference between them is their ability to fix it. MDCs have much more developed economies and have the money and technology to curb their contribuBon to environmental degradaBon. LDCs, on the other hand, are not as developed and do not know the effect they have on the environment and they do not have the funds to stop their environmental damage.