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Tropical Desert

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Kiearra Hudson

on 31 October 2013

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Transcript of Tropical Desert

Tropical Desert
The tropical desert has the highest annual temperature of any climate on Earth. The high temperatures are caused by the high sun angles throughout the year. Daytime temperatures can reach 50oC (120oF) at low elevation inland deserts
Precipitation in the tropical desert is very irregular and unreliable. Low latitude deserts average less than 25 cm (10 in) in a year. An entire year's worth of rain may fall in one downpour. Relative humidity can drop to 10% or less.
What is a Tropical Desert?
The Tropical Desert is an environment of extremes: it is the driest and hottest place on earth. Rainfall is occasional and in some years no measurable precipitation falls at all. The terribly dry conditions of the deserts is due to the year-round influence of subtropical high pressure and continentality.

Primary Location
Deserts are typically found in continental interiors of the subtropics and on the side of mountains in the mid-latitudes. Cool coastal deserts are found where cold water upwells along a coast, stabilizing the air and preventing moisture formation like that near coastal Chile.
Soils are course-textured, shallow, rocky or gravely with good drainage and have no subsurface water. They are coarse because there is less chemical weathering. The finer dust and sand particles are blown elsewhere, leaving heavier pieces behind.
Soil Characteristics
Sierozem( Gray Desert Soil)
The Gray Desert Soil can vary from light gray to grayish brown. It doesn't contain humus because of the lacking growth of vegetation. It can produce calcium carbonate less than 1 foot deep in the form of lime crust . This makes it look like it's hard rock cover and it cant erode away.
Red Desert Soil
The Red Desert Soil can be founded in the hottest part of the tropical desert. The tend to be anywhere from reddish gray to a deep red. It only contains a little bit of hummus because it only has a few shrubs in the area.They also have lime carbonate like gray soil.
Physical features
Subtropical, high-pressure systems dominate the climates of tropical deserts, with their sinking air inhibiting precipitation and warding off any moist air masses. Lack of wind encourages any water to rapidly evaporate. Deserts near oceans, such as Baja California, are located in spots where cool, offshore currents suppress shower and thunderstorm formation.

Plant Life

Brittle Bush
Chainfruit Cholla
Desert Ironwood
Barrel Cactus
Joshua Tree
Crimson Hedgehog Cactus
Plant Adaptation
All of the desert plants have one clear adaptation. They hold water no matter how dry it is. They are known for absorbing and holding water for long periods of time

Ecological Relationship
In ecology, desert ecology is the sum of the interactions between both biotic and abiotic processes in arid regions, and it includes the interactions of plant, animal, and bacterial populations in a desert habitat, ecosystem, and community. Some of the abiotic factors also include latitude and longitude, soil, and climate. Each of these factors have caused adaptations to the particular environment of the region. The biotic processes include animals and plants and the way they interact.
Food Chain
Human Uses and Problems
Off roading is one of the activities that hurts the desert. Many people drive their off road vehicles in unrestrained areas over the desert. Which leaves tracks on on soil, that leaves a scar on the land for decades and kills vegetation. When vegetation is harmed, so are the animals. When vegetation dwindles in population. Animals that hide in the sand can also be harmed.
Endangered Species
The Ocelot
The Kangaroo Rat
The Gila Monster
The Prairie Dog
The Peregrine Falcon
10 Interesting facts
1.Temperate deserts often have a higher number of species (diversity) than temperate forests
2.Deserts often have the highest daily range of temperatures (high temperature minus low temperature), going from scorching hot in the day to freezing cold at night.
3.Deserts receive little rainfall, however, when rain does fall, the desert experiences a short period of great abundance.
4.The world’s deserts occupy almost one-quarter of the earth’s land surface, which is approximately 20.9 million square miles.
5.The world's largest hot desert is the Sahara.
6.The desert biome is found throughout the seven continents
7.An estimated one-third of the Earth's land is arid and semi-arid desert.
8.About thirty countries, mostly located in the African continent, have 75% of their geographical span in deserts.
9.The sand that we see on desert surfaces is not all that constitutes their topography. Most deserts have rough, gravel bases under the sandy surfaces. Sahara desert is a good example as it comprises 30% sand and 70% gravel.
10.Due to scarcity of water and vegetation, animal life forms are limited in deserts.

Presented by:
Danielle Crowder and Kiearra Hudson
Animal Life
Kangaroo Rat:
able to convert dry seeds they eat into water
adapted by digging catch basins to catch rainfall
Bighorn Sheep:
adapted to their environment hot climate by cooling itself like perspiring and painting
Cactus Wren:
adapt very easily to their environment as long as they have the chaparral plants which provides shelter and protection
Sand Cat:
adapted to endure extreme environments
Full transcript