biomes

biomes

aquatic
1. characteristics
  1. contain water
  2. commonly links the other biomes
  3. temperatures can vary
2. sub-categories
  1. saltwater
    1. more than 1% salt concertration
    2. cause most of the worlds precipitation
  2. freshwater
    1. less than 1% salt concentration
    2. ponds, streams, lakes, rivers and wetlands
desert
1. characteristics
  1. extreme temperatures
  2. little rainfall
  3. little plant growth
2. sub-categories
  1. arid
    1. less than 25cm of annual rainfall
    2. 49 degrees Celsius to -18 degrees celsius
  2. semi-arid
    1. 25cm to 50cm of annual rainfall
    2. not as extreme temperatures as arid deserts
  3. hyper-arid
    1. less than 25cm of annual rainfall
    2. the most arid desert
    3. similar temperature to arid deserts
grasslands
1. characteristics
  1. areas dominated by grasses
  2. not many trees
  3. too much rain for a desert but not enough for a forest
  4. fertile soil; great for crop production
  5. average temperature is -5 to 20 degrees celsius
2. sub-category
  1. tropical
    1. 635mm to 1524mm of annual rainfall
    2. less rainfall than temperate
    3. larger varying climate
  2. temperate
    1. 254mm to762mm of annual rainfall
    2. not as varying climate
    3. more rainfall than tropical
forest
1. characteristics
  1. dominated by trees and woody vegetation
  2. warm temperatures
  3. humididty
  4. large rainfall
2. sub-categories
  1. tropical
    1. near the equator
    2. over 200cm of rainfall
    3. little light at the ground level
    4. nutrient poor and acidic soil
    5. 20 - 25 degrees celsius
  2. temperate
    1. -30 - 30 degrees celsius
    2. 75cm to 150cm of annual rainfall
    3. fertile soil
    4. more light reaches the ground level than tropical
  3. boreal (Taiga)
    1. 40cm to 100cm of rainfall
    2. nutrient poor and acidic soil
    3. precipitation generally falls as snow
    4. little light a ground level
    5. 10 degrees Celsius to -50 degrees celsius
tundra
1. characteristics
  1. receives a lot of precipitation as snow
  2. very cold
  3. limited vegetation
  4. many animals hibernate
2. sub-categories
  1. alpine
    1. located at high altitudes
    2. temperature drops 10 degrees Celsius every 1000 metres
    3. 10 degrees Celsius to well below 0 degrees celsius
    4. rainfall varies considerably
  2. arctic
    1. 12 degrees Celsius to -38 degrees celsius
    2. 15cm to 25cm of annual precipitation
  3. antarctic
    1. -13 degrees Celsius to -55 degrees celsius
    2. similar rainfall to arctic

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