biomes
Post on 24-Feb-2016
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BiomesA drought makes vegetationscarce
What is a biome?
Group of ecosystems with similar climates and organisms
What are the 6 major biomes?
Rain forestDesertGrasslandDeciduous forestBoreal forestTundra
How do we categorize biomes?
Climate-temperature and precipitation
Types of organisms
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
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
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
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
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
Deciduous Forest
Deciduous trees-maple, oakSeasons-warm in summer, snow in
winterTrees lose leaves in fallSalamanders, black bears, white-tailed
deer, squirrel, fox
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
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
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
Freshwater Ecosystems
Streams and Rivers-insects, trout, frogs, algae
Ponds and Lakes- dragonflies, catfish, sunfish, turtles, snails, algae, bacteria
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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