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Biomes

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  • 1. World Biomes
  • 2. Biomes • Regions of the world with similar physical environments • Named for most conspicuous types of vegetation • Climate factors Rainfall (precipitation) Temperature Altitude Latitude • Boundaries are indistinct
  • 3. Six Major Biomes • Tropical Rain Forests • Grassland – Tropical/Subtropical Grassland – Temperate Grassland • Desert • Temperate – Temperate Deciduous Forest – Temperate Rain Forest • Taiga • Tundra
  • 4. Tropical Rain Forests • Equatorial lowlands • Constant temperature and abundant rainfall all year long • Many arboreal animals • Few terrestrial animals
  • 5. Tropical and Subtropical Grassland • Warm temperatures throughout the year • Well defined dry season and rainy season • Large herbivores • High grasses • Scattered trees and shrubs
  • 6. Temperate Grassland • Hot, humid summer and cold winter • Precipitation as winter snow and heavy spring and summer rain • Short and tall grasses; trees found only near streams • Wide variety of animal life – Large herbivores – Smaller animals build burrows
  • 7. Deserts • Identified by lack of precipitation • Deserts can be cold or hot – Antarctica is a cold desert • Nocturnal animal life in hot deserts • Plants are well adapted to short water supply
  • 8. Temperate Deciduous Forests • Deciduous forests of mid-latitude regions • Cold winters and hot summers • Abundant rain and snowfall • Wide variety of animal life
  • 9. Temperate Rain Forests • Cold winters and hot summers • Abundant rain and snowfall • Conifers (redwood, firs, pines, spruce) retain their needles. – Needles conserve water in dry summer and shed snow in cold winter • Wide variety of animal life
  • 10. Taiga (Boreal Forest) • Coniferous (Evergreen) Forests • Found at high elevations and/or far northern latitudes • Snow accounts for most of the precipitation • Animals are adapted to long, cold winters
  • 11. Tundra • Areas with continuously frozen ground (permafrost) • Near polar regions • Small plants limited by frozen soil and prolonged dark season • Animals adapted to extreme cold; birds often migrate