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Biomes

Biomes. Major varieties of world ecosystems. G.2.9 Distinguish between biome and biosphere . A Biosphere is the entire earth (it’s a sphere!) A Biome is a region that has a certain set of abiotic conditions. World Biomes. Biomes & Climate. Tropical Rainforest. Rainforests.

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Biomes

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  1. Biomes Major varieties of world ecosystems

  2. G.2.9Distinguish between biome and biosphere. • A Biosphere is the entire earth (it’s a sphere!) • A Biome is a region that has a certain set of abiotic conditions

  3. World Biomes

  4. Biomes & Climate

  5. Tropical Rainforest

  6. Rainforests • Found in areas near the equator where rainfall is abundant • Broad-leaved evergreen trees and shrubs • Highest in species richness

  7. Temperate Deciduous Forest

  8. Temperate Forest • mid-latitude regions where there is sufficient moisture to support the growth of large trees • temperatures range from cold in winter to hot in summer • precipitation is relatively high and evenly distributed throughout the year • several layers of vegetation

  9. Tiaga (Boreal Forest)

  10. Taiga • also called temperate coniferous or boreal forests • is found across Northern North America, Europe, and Asia • long, cold winters and short, wet summers that are occasionally warm

  11. Desert

  12. Desert • Little precipitation (less than 10in/year) • N. Africa, Australia, SW N. America, Asia • Sparse vegetation, plants have waxy coating to reduce water loss • Animals avoid heat of day by burrowing or active at night

  13. Temperate Grasslands

  14. Grasslands • Limited rainfall – not enough to support trees • seasonal drought, occasional fires, and grazing, all of which prevent woody shrubs and trees from invading • soils tend to be thick and nutrient rich and roots of perennial grass are often very deep • Grazing animals

  15. Aquatic Biomes Marine and Freshwater Ecosystems

  16. Marine Ecosystems • Intertidal Zone - Shorelines • Neritic Zone – Continental Shelf • Oceanic Zone – Open Oceans

  17. Freshwater Ecosystems - Estuaries • Where freshwater streams and rivers flow into the seas • Very productive – rich in species • Salinity varies in the estuary, often based on the cycle of the tides

  18. Freshwater EcosystemsRivers and Streams • Characterized by water flow due to elevation change • Organisms adapted to withstand powerful currents

  19. Freshwater Ecosystems Ponds and Lakes

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