DO NOW
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Transcript of DO NOW
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DO NOW
1. Grab your portfolio2. What is a biome? (look in your notes if you
forgot)
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Ecosystem
Biotic• Living• Lived before• Can be dead• Can be parts of living things
Abiotic• Nonliving• Have never lived• Are not dead• Are not parts of living things
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Ecosystem
• All of the abiotic (nonliving) & biotic (living) factors in an area
• Biomes are made up of ecosystems
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Biomes
• The world’s major communities• Classified according to vegetation and
organisms
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5 Major Biome Types
• Tundra• Grasslands• Aquatic• Forests• Desert
Biotic & abiotic factors determine biome classification
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Biosphere
• The biosphere includes all life on earth
• Biodiversity is the degree of variation (differences) of life forms within a given species, ecosystem, biome or entire planet.
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Biodiversity
• Why is biodiversity good?• Why is biodiversity necessary?• What happens if biodiversity is decreased?
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Biodiversity
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BIOMES• Biome Video 1• Biome Video 2
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Biomes
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Tundra Climate• COLD!• Permafrost: a layer of permanently frozen sub
soil• Short cool summer: Ground soggy and wet• Small and stunted plants
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Tundra Biotic Factors
• Small and stunted plants• Few birds• Few mammals
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Tundra Abiotic Factors
• Strong winds• Low Precipitation• Short & Soggy Summers• Long, cold dark winters
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Tundra Abiotic Location
• NORTH North America• Asia• Europe
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Desert Climate
• DRY• Many alternate between hot and cold• Organisms can tolerate extreme conditions
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Desert Biotic Factors
• Cacti and other succulents• Plants with short growth
cycles• Predators: mountain lions,
gray foxes, bobcats• Herbivores: dder, antelope• Bats, birds, hawks, owls,
rattlesnakes, lizards
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Desert Abiotic Factors
• Low precipitation• Variable temps.• Soils rich in minerals• Poor organic material in soil
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Desert Location
• Africa• Asia• Middle East• United States• Mexico• South America• Australia
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Forest
AREA DOMINATED BY TREES• Tropical Dry Forests• Tropical Rain Forests• Boreal Forest• Temperate Forest
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Tropical Rain Forest
More species than all other biomes combinedSUPER tall trees (canopy) & shorter trees
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Tropical Rain Forest Abiotic
Hot and wet year roundThin, nutrient poor soil
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Tropical Rain Forest Biotic
Broad leaved treesFernsWoody vinesSloths, jaguars, anteaters, monkeys, toucans, parrots, butterflies, anaconda
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Tropical Rain Forest Location
South & Central America, Southeast Asia, Africa, Southern Indian, Northeastern Australia
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Tropical Dry Forest Climate
• Rainfall is highly seasonal• Deciduous trees
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Tropical Dry Forest Abiotic
• Generally warm year round• Alternating wet & dry seasons• Rich soil
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Tropical Dry Forest Biotic
• Tall, deciduous trees – dense canopy• Succulents• Tigers, Monkeys, elephants, rhinos, pelicans,
termites, reptiles
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Tropical Dry Forest Location
• Parts of Africa, South & Central America, Mexico, India, Australia and Tropical Islands
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Boreal Forest (Taiga)
• Northern Edge of Temperate Zone• Dense Evergreen Coniferous trees• COLD winters• Mild summers• Northern Hemisphere
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Boreal Forest Abiotic
• LONG cold winters• Short mild summers• Moderate precipitation• High Humidity• Nutrient Poor Soils
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Boreal Forest Biotic
• Coniferous Trees – Spruce & Fir• Some Deciduous Trees• Lynx, Timberwolves, weasels, moose, small
mammals, migratory birds
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Boreal Forest Location
• North America, Asia, Northern Europe
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Temperate Forest Climate
• Deciduous and Coniferous Trees• Cold Winters & Warm Summers
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Temperate Forest Abiotic
• Cold to moderate winters & warm summers• Year-round precipitation• Fertile Soil
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Temperate Forest Biotic
• Both Deciduous & Conifers Trees, Flowers, Mosses and ferns
• Deer, Black Bears, Bobcats, squirrels, raccoons, skunks, songbirds
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Temperate Forest Location
• Easter United States, Southeastern Canada, Most of Europe, Parts of Japan, China and Australia
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Tropical Savanna Climate
• More seasonal rainfall than deserts, less than tropics
• Cover of grasses• Isolated Trees• Large animals
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Tropical Savanna Abiotic• Warm Temps.• Seasonal rainfall• Compact Soil• Frequent Fires
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Tropical Savanna Biotic
• Tall, perennial grasses, drought-tolerant and fire-resistant trees or shrubs
• Predators: lions, leopards, cheetahs• Herbivores: elephants, giraffes, antelopes,
zebras• Birds: Eagles, ostriches birds, storks
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Tropical Savanna Location
• Large parts of Eastern Africa, Southern Brazil, Northern Australia
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Temperate Grassland
• Mix of grasses• Fertile Soil• Most converted to agriculture • Periodic fires & grazing
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Temperate Grassland Abiotic
• Warm to hot summers, cold winters• Moderate, seasonal precipitation• Fertile soils
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Temperate Grassland Biotic
• A lot of grasses – most resistant to drought or fire
• Coyotes, badgers, mule deer, antelope, rabbits, prairie dogs, cattle (introduced)
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Temperate Grassland Location
• Central Asia, North America, Australia, Central Europe, South America
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Aquatic
• Marine• Freshwater
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Aquatic Climate
• Bodies of water
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Aquatic Abiotic
Marine• Salt Water
Freshwater• Freshwater
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Aquatic Biotic
• Animals and plants that can live in water
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Aquatic Location