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Biome tour - Grasslands
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Temperate grassland Less rain than TDF Like TDF TDF = temperate
deciduous forest
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Temperate grasslands Dominated by … grasses! Few trees—why?
Very fertile soils—US midwest farm belt
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Temperate grasslands Rainfall is much less than temperate deciduous forest Fires have also helped keep trees from growing Grasses rebound from fire quickly
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Temperate grassland Soils are deep and fertile
The main US farming region Prairie is the name for temperate grasslands in the midwest They have largely disappeared under the farmer’s plow
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Temperate Grassland Purple needlegrass Blue Grama
Buffalo grass Galleta Asters Blazing Stars Coneflowers Goldenrods Sunflowers Clovers Psoraleas Wild Indigos
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Tundra Deciduous Forest Savanna Taiga Chaparral Rainforest Grassland Desert Alpine Desert-Scrub
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Tundra Water is scarce, too Coldest biome
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Tundra Cold and dry Growing season only 50-60 days Treeless
Low biological diversity—compare to tropical rainforest
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Tundra Soils form very slowly
There is a layer of permanently frozen soil, called PERMAFROST, which limits root growth Result of permafrost: Waterlogged soils or bogs
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Tundra Animals have adaptations to the cold Fur Large and round
Migratory—many birds breed in the tundra but spend 9-10 months elsewhere
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Tundra Plants often low growing
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Tundra Deciduous Forest Savanna Taiga Chaparral Rainforest Grassland Desert Alpine Desert-Scrub
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Tropical Savanna Warm and stable Seasonal rainfall:
Dry and wet seasons
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Tropical Savanna Serengeti plain, Kenya Note:
Grassland, scattered trees large herbivores, temporary water
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Tropical Savanna Warm, like tropical rainforest
BUT: rainfall is seasonal, with a few months of drought
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Tropical Savanna Plants: Animals Tall grasses
Trees may or may not form a canopy Animals Depend on the seasonal rains Migrate in search of forage
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Tundra Deciduous Forest Savanna Taiga Chaparral Rainforest Grassland Desert Alpine Desert-Scrub
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