biomes are a group of ecosystems with similar abiotic and biotic factors. (example: hot/dry desert...
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![Page 1: Biomes are a group of ecosystems with similar abiotic and biotic factors. (example: hot/dry desert in Nevada and North Africa)](https://reader030.vdocument.in/reader030/viewer/2022032611/56649e845503460f94b86273/html5/thumbnails/1.jpg)
Biomes are a group of ecosystems with similar abiotic and biotic factors.
(example: hot/dry desert in Nevada and North Africa)
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Rain Forests found near the equator
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Abiotic Factors:
Warm temps (Avg. 25° C, 77° F)
Large Amounts of Moisture (Humidity Avg. 88%)
High levels of Rainfall (more than 100 inches per year: 8 feet)
Very Poor Soil (nutrients washed away/lots of plants)
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Biotic Factors:Rainforests have more biodiversity than any other biome.
Animals that can live in trees (tails, fly, grip)
Organisms that need a lot of moisture (frogs/fungi)
Organisms that don’t need a lot of light (under the canopy)
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Biotic Factors:Rainforests make 40% of the Earth’s oxygen.
Not a lot of light under canopy/ need to absorb light/ lots of vines
300 different types of species of trees every 2 acres, 70% of the plants are trees
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Desert Biomes
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Desert Biomes
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Abiotic Factors:
Drastic Temp changes from day to night(49°C, 120°F to -18°C, -1°F)
Windy
Very dry (less than 9 in. of rain a year, less than one foot)
Sand/ Little or no topsoil
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In the Desert Biome, plants (cactus) have the ability to hold water for
later use and most animals (scorpion) are nocturnal.
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Animals usually have thick shells or skin
Get water from food, or store water (plants)
Come out at night and burrow during the day
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Grassland
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Grassland
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Abiotic Factors:
Temperatures vary throughout the year, warm summer, cold winter
Windy
Has a rainy season and a dry season (10 to 30 in. a year, not enough rain to naturally support trees, but plenty for grass and shrubs)
Nutrient-rich soil
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Dominated by grasses
Grazing animals
Plants and Animals that can adjust to fit season- ex. thicker coats in winter, burrow during extreme temps
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Deciduous Forest
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Abiotic Factors:
Temperatures vary greatly- very cold winter, hot summer
Four distinct seasons
Annual rainfall (50-300cm, 19-118 in.)
Soil- rich top layer, deep clay layer
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Deciduous Forest
The weather in this area changes with
the seasons. It becomes very cold in the winter and
hot in the summer. There is enough
rainfall to support large trees.
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Trees in this biome drop their leaves in the fall/winter and
new ones sprout each spring.
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Nesting birds
Diverse animals
Animals that can adjust to fit season- thicker coats in winter, hibernating during extreme temps
A lot of brown and green organisms
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Taiga: also known as northern coniferous
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Abiotic Factors:
Long, Very cold winter season, below freezing for six months out of the year.
Cold season, Rainy Season
Snow is the main precipitation
Soil- poor in minerals and acidic
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Coniferous trees- aspen, birch
Large animals
Animals with thick fur and that hibernate in severe conditions
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Tundra
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TundraAbiotic Factors:
Very cold (avg. -70°)
very windy
Dry, Little annual rainfall
Soil- underneath thin topsoil- frozen ground, no nutrients in the soil
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Treeless land
Limited organisms due to low vegetation and extreme cold
Only shallow-rooted grass and small plants
Migration animals, very insulated
Lot of white animals