Transcript Biomes Earth can be divided into Biomes
Earth can be divided into
Division into Biomes
Latitudes define some biomes
Categories of Biome
Primary Biomes : Tropical Rain Forest Tropical Dry Forest Tropical Savanna Temperate Grassland Desert Temperate Woodland/Shrubland Temperate Forest Northwestern Coniferous Forest Boreal Forest Tundra
Other Land Areas : Mountain Ranges Polar Ice Caps
Tropical Rainforest Biome
The tallest trees are the emergents, towering as much as 200 feet above the forest floor with trunks that measure up to 16 feet around. Most of these trees are broad-leaved, hardwood evergreens. Sunlight is plentiful up here. Animals found are eagles, monkeys, bats and butterflies.
This is the primary layer of the forest and forms a roof over the two remaining layers. Most canopy trees have smooth, oval leaves that come to a point. It's a maze of leaves and branches. Many animals live in this area since food is abundant. Those animals include: snakes, toucans and treefrogs.
Little sunshine reaches this area so the plants have to grow larger leaves to reach the sunlight. The plants in this area seldom grow to 12 feet. Many animals live here including jaguars, red-eyed tree frogs and leopards. There is a large concentration of insects here.
It's very dark down here. Almost no plants grow in this area, as a result. Since hardly any sun reaches the forest floor things begin to decay quickly. A leaf that might take one year to decompose in a regular climate will disappear in 6 weeks. Giant anteaters live in this layer.
Tropical Rainforest Biome
-Home to more species than any land biome
: Hot and wet year round, nutrient-poor soils
: Evergreen trees, ferns, large vines, orchids
Sloths, tapirs, jaguars, anteaters monkeys, toucans, parrots, butterflies, beetles , piranhas, reptiles, boa constrictors, anacondas
Tropical Dry Forests
Parts of Africa, South and Central America, Mexico, India, Australia, and Tropical Islands
Tropical Dry Forests
Abiotic Factors: Warm year round, altering wet and dry seasons, rich soils subject to erosion Dominant Plants: trees aloes, succulents, deciduous Dominant Wildlife: tigers, monkeys, elephants, termites, hog deer, spot billed pellican
Eastern Africa, Southern Brazil, North Australia
Abiotic Factors: Warm Temp, Seasonal Rainfall, compact soil, frequent lightning fires Dominant Plants: perennial grasses, drought tolerant/fire resistant trees and shrubs Dominant Wildlife: lions, cheetahs, hyenas, aardvarhs, elephants, giraffes, zebras, baboons, eagles, storks, termites
Arica, Asia, Middle East, U.S., Mexico, Aussie, South America
Abiotic Factors: Low Percipitation, variable temperatures, soils rich in minerals but poor organic material Dominant Plants: short growth cycles cacti, succulants, plants w/ Dominant Wildlife: mountain lions, bobcats, mule deer, kangaroo rats, bats, owls, hawks, roadrunners, ants beetles, wasps, rattlesnakes, lizards
Central Asia, North America, Austrailia, Central Europe, Part of South America
Abiotic Factors: Warm to hot summers, cold winters, moderate, seasonal precipitation, fertile soil, occasional fires Dominant Plants: perennial grasses and herbs- many are very resistant Dominant Wildlife: coyotes, badgers, mule deer, rabbits, bison, hawks, owl, grasshoppers, snakes
Western Coast of North and South America, Mediterranean Sea, South Africa, and Australia
Abiotic Factors: hot, dry summers, cool, moist winters, thin, nutrient poor soils Dominant Plants: woody evergreen shrubs, herbs that grow during winter and die in the summer Dominant Wildlife: coyotes, foxes, bobcats, rabbis, squirrels, mice, hawks, warblers, spiders
Eastern U.S., Southeastern Canada, Most of Europe, Part of Japan, China, and Australia
Temperate Forest Abiotic Factors:
Cold-Moderate Winters, warm summers, year round precipitation, fertile soils
Dediduous trees, some conifers, shrubs, herbs, ground has mosses and ferns
deer, black bears, bobcats, squirrels, raccoons, skunks, turkeys
Northwestern Coniferous Forest
Abiotic Factors: mild temp, lots of precipitation-fall, winter, spring, cool dry summer, rocky acidic soil Dominant Plants: Douglas fir, Sitka spruce, Redwood Dominant Wildlife: bears, elk, deer, beavers, owls, weasels Location: North California- Alaska (Northwest)
North America, Asia, North Europe
Abiotic Factors: Long cold winters, short, mild summers, moderate precipitation, high humidity, acidic, nutrient poor soil Dominant Plants: spruce, fir, small berry shrubs Dominant Wildlife: lynx, timber wolf, moose, beavers, and song birds
North America, Asia, Europe
Abiotic Factors: Strong winds, low precipitation, short soggy summers, long, cold, and dark winters, permafrost, bad soil Dominant Plants: mosses, lichens, sedges, and short grasses, Dominant Wildlife: musk ox, artic foxes, caribous, lemmins (small rodents)
• Heavily modified by human activity • Example: US grasslands barely exist.
• Mostly has been taken over by agriculture.
• So Biomes defined by potential, not actual plants & animals • Defined by climate of region - Combination of temperature & rainfall most important factors.