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Biomes

Biomes. A drought makes vegetation scarce. What is a biome?. Group of ecosystems with similar climates and organisms. What are the 6 major biomes?. Rain forest Desert Grassland Deciduous forest Boreal forest Tundra. How do we categorize biomes?.

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Biomes

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  1. Biomes A drought makes vegetation scarce

  2. What is a biome? • Group of ecosystems with similar climates and organisms

  3. What are the 6 major biomes? • Rain forest • Desert • Grassland • Deciduous forest • Boreal forest • Tundra

  4. How do we categorize biomes? • Climate-temperature and precipitation • Types of organisms

  5. Rainforest Biomes • Lots of rain • Thick vegetation-lots of plants • Leaves block much of the sunlight from reaching the forest floor • 2 types of rainforest biomes-temperate and tropical

  6. Temperate Rainforest • Northwest U.S. • Huge trees like cedars, redwoods, and Douglas firs • Moderate temperature • Over 300 centimeters of rain each year • Mule deer, pileated woodpecker, golden buprestid beetle

  7. Tropical Rainforest • Found close to Equator • Warm and humid year round • A lot of rain- over 350cm per year in Costa Rican rainforest • Canopy-leafy roof formed by tall trees • Understory-shorter layer of trees and vines • Abundant life- over 300 kinds of trees in 100-square meters • Probably contain more species than all other land biomes combined • Orangutans, spider monkeys, tigers, sloth

  8. Desert • Less than 25cm of water per year • Evaporation rate greater than precipitation rate • Very hot during the day and very cold at night • Saguaro cactus, Gila monsters, vipers, jack rabbits

  9. Grassland Biomes • Tall grasses • 25-75 cm of rain each year, but savannahs can receive as much as 120 cm of rain • Fires and draughts common • Prairies and savannahs • Elephants, bison, antelope, zebras, rhinos, giraffes, kangaroos

  10. Deciduous Forest • Deciduous trees-maple, oak • Seasons-warm in summer, snow in winter • Trees lose leaves in fall • Salamanders, black bears, white-tailed deer, squirrel, fox

  11. Boreal Forest • Evergreen trees-spruce, pine • Coniferous trees- have seeds in cones • Winters cold, lots of snow • Summers warm and rainy • Red squirrels, finches, snowshoe hares, moose, owls, lynx, wolves

  12. Tundra • Cold and dry • Permafrost-ground continuously frozen • Many ponds, marshy • In the Arctic circle, the sun does not set in summer • Mosses, grasses, shrubs, very small trees • Insect-eating birds, caribou, foxes, wolves, Arctic hares

  13. Mountains and Ice • Mountain ranges, land that is covered with thick ice • Mountains have a range of biomes as you ascend • Antarctica and Greenland are covered in ice • Penguins, polar bears, and leopard seals

  14. Freshwater Ecosystems • Streams and Rivers-insects, trout, frogs, algae • Ponds and Lakes- dragonflies, catfish, sunfish, turtles, snails, algae, bacteria

  15. Marine Ecosystems • Estuary- freshwater meets salt water, crabs, worms, clams, fish • Intertidal Zone- Between high and low tide lines, varying water and temperatures, barnacles, sea stars, clams, crabs • Neritic Zone- Shallower ocean near continents, sardines, algae, coral • Open Ocean- light only reaches a few hundred meters, tuna, swordfish, whales • Deep Zone- Almost totally dark, scavengers, giant squid, angler fish

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