biomes
DESCRIPTION
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?. - PowerPoint PPT PresentationTRANSCRIPT
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BiomesA drought makes vegetationscarce
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What is a biome?
Group of ecosystems with similar climates and organisms
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What are the 6 major biomes?
Rain forestDesertGrasslandDeciduous forestBoreal forestTundra
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How do we categorize biomes?
Climate-temperature and precipitation
Types of organisms
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Rainforest Biomes
Lots of rainThick vegetation-lots of plantsLeaves block much of the sunlight
from reaching the forest floor2 types of rainforest biomes-
temperate and tropical
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Temperate RainforestNorthwest U.S.Huge trees like cedars, redwoods,
and Douglas firsModerate temperatureOver 300 centimeters of rain each
yearMule deer, pileated woodpecker,
golden buprestid beetle
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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
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Desert
Less than 25cm of water per yearEvaporation rate greater than
precipitation rateVery hot during the day and very
cold at nightSaguaro cactus, Gila monsters,
vipers, jack rabbits
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Grassland BiomesTall grasses25-75 cm of rain each year, but
savannahs can receive as much as 120 cm of rain
Fires and draughts commonPrairies and savannahsElephants, bison, antelope, zebras,
rhinos, giraffes, kangaroos
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Deciduous Forest
Deciduous trees-maple, oakSeasons-warm in summer, snow in
winterTrees lose leaves in fallSalamanders, black bears, white-tailed
deer, squirrel, fox
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Boreal Forest
Evergreen trees-spruce, pineConiferous trees- have seeds in conesWinters cold, lots of snowSummers warm and rainyRed squirrels, finches, snowshoe hares,
moose, owls, lynx, wolves
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TundraCold and dryPermafrost-ground continuously frozenMany ponds, marshy In the Arctic circle, the sun does not set
in summerMosses, grasses, shrubs, very small
trees Insect-eating birds, caribou, foxes,
wolves, Arctic hares
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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
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Freshwater Ecosystems
Streams and Rivers-insects, trout, frogs, algae
Ponds and Lakes- dragonflies, catfish, sunfish, turtles, snails, algae, bacteria
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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