Biomes of the World

C-Group - Cechs - Earth and Environmental Science

Desert Biome

By: Lauren W. , James S. , Boyd H. , Jonathan R.

The desert biome is an ecosystem that forms due to the low level of rainfall it receives each year. Deserts cover about 20% of the Earth. There are four major types of desert in this biome - hot and dry, semiarid, coastal, and cold. They are all able to inhabit plant and animal life that are able to survive there.


  • The location of deserts is dependent on two factors, latitude and global wind patterns.
  • Most deserts are located between 15' and 35' latitude, both north and south of the equator.
  • In terms of global wind patterns, most deserts are located within the Southeastern and Northeastern trade winds belt. Due to the direction of the wind movement in these regions, the land receives dry air because the moisture is removed before the air gets to the region.
  • Most deserts are formed because the moisture is removed from the air over the tropical rainforests before traveling to these regions.
  • Deserts can also be created when the air they receive passes over a mountain range first. When the air rises to move over the mountain range, it cools, and the moisture in the air is lost as rain. As a result, when the air gets over the mountain range, it is very dry.
  • The largest desert on Earth is the Sahara Desert in Africa. This desert stretches over more than ten African countries.
  • In the United States, the largest desert is the Great Basin Desert. The Great Basin Desert is not the type of desert you would normally picture - it's unique because it receives most of its precipitation as snow!

Climate Characteristics

  • During the day the temperature may reach 50°C.(122°F)
  • When at night it may fall to below 0°C. (32°F)
  • Deserts have less than 250 mm of rainfall per year.
  • The rain, in this biome can be unreliable.

Keystone Flora

  • Cactus
  • Wildflower
  • Desert Rose

Keystone Fauna

  • porcupine
  • western diamond back Rattle Snake
  • Hummingbird

More Animals in the Desert

The Namibian Desert

Here is a National Geographic documentary about one of the most harshest deserts in the world
National Geographic Wild Namibia

food chain

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By: Savannah H,Gretchyn G, Sterling G, Ian C


Earth is composed of 71% of water. This makes the Aquatic biome the largest in the world. it contains fresh and salt water along with glaciers and other forms of water. This makes it the home of millions of species of flora and fauna.

Climate Characteristics:

1: The climate mostly varies. It can be from -40 degrees Fahrenheit to over 100 degrees Fahrenheit. The average is 39 degrees.

2: Weather is harsh. Typhoons, hurricanes, tsunamis, etc. can occur over aquatic areas.

3: Wind is more harsh over water, it also causes harsher waves.

4: The temperature of the water towards the poles is colder and the temperature of the water towards the equator is warmer. Also the deeper you go into the ocean the colder it gets due to the lack of direct sunlight.

Keystone Flora:

  • Pondweed
  • Horned-pondweed
  • hornwort, parrots feather
  • thread-leaved water-nymph
  • Elodea
  • Mares-tail
  • Quillwort
  • Ditch-grass
  • water lily
  • yellow pond lily
  • cape pondweed
  • Water-chesnut
  • floating heart
  • Frog-bit
  • Water-shield
  • Horsetails
  • water lettuces
  • Duckweed
  • mosquito fern
  • Bladderworts
  • rorippa amphibia
  • algae

Keystone Fauna:

  • Seals
  • Sharks
  • Tuna
  • Shrimp
  • Angel Fish
  • Blue Devil
  • Box Fish
  • Clownfish
  • Eel
  • Frogfish
  • Groper
  • Lionfish
  • Pufferfish
  • Seahorse
  • Tang
  • Whales
  • Otter
  • Ducks
  • Frogs
  • Squid
  • Clams
  • Crabs
  • Mussels
  • Snails
  • Sea Snakes


By: Sarah C., Fatima C., Jordan B., Danyelle T.


Rain forests are located in Central America, the United States, the Amazon, Africa, Southern Asia, and Australasia. Temperate Deciduous forests are located in the United States, Canada, Europe, parts of Russia, China, and Japan.
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Climate Characteristics:

Rain forests are dense and warm. It rains often.They are important because the plants generate most of the earth’s oxygen. The plants also produce many drugs that fight disease and illness.

Deciduous forests have seasons and vary in temperature. They are important because they provide habitats for multiple animals for different climates

Keystone Flora:

Keystone Fauna:

More Animals:


By: Colton S, Savannah M, Katie H


About 1/4 of the earth's land is covered in grasslands. Grasslands are on every continent with the exception of Antarctica.
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Climate Characteristics:

  • Tropical grasslands have warm weather all year round and temperate grasslands have a half of year of warm and half a year of very cold

  • Tropical receives more rainfall

  • The steppes have cold, dry climates

  • Temperate Grasslands have hot summers and cold winters.

  • In the dry season, forest fires are common

  • Savanna has a dry and rainy season

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Keystone Flora:

  • Purple needle grass

  • Wild oats

  • Foxtail

  • Ryegrass

  • Buffalo Grass

  • Wild Indigo

  • Sunflowers

  • Golden rods

  • Asters

Keystone Fauna:

  • Alpacas

  • Badger

  • Bison

  • Brown Bear

  • Coyote

  • Deer

  • Dingo

  • Rhino

  • Prairie dog

  • Owl



Aaron L, Amber H, Kayla M, Dylon W


Alaska, Northern Canada, Russia, Northern Siberia, and Northern Scandinavia.

Climate Characteristics

  • It is cold through all months of the year
  • Summer is a brief period of milder climates when the sun shines almost 24 hours a day
  • The shortest summer only lasts 6 to 10 weeks
  • It never gets warmer than 45 or 50 degrees Fahrenheit
  • The weather causes a permanent layer of permafrost

Keystone Flora

  • bearberry
  • arctic moss
  • caribou moss
  • diamond leaf willow
  • Labrador tea
  • pasque flower
  • tuffed saxifrig

Keystone Fauna

  • Caribou
  • ermine
  • water birds
  • mosquitoes
  • polar bears
  • arctic fox
  • white wolves
  • grizzly bear
  • gray falcon
  • bald eagles
  • arctic hares

Food Chain

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