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Terrestrial Biomes. Chapter 50 ( Part 2). Terrestrial Biomes. Large regions of earth Dependent on Rainfall & Temperature Characterized by specific vegetation & animal life Characteristic biomic progression in terrestrial latitude & altitude in a mountain range

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terrestrial biomes

Terrestrial Biomes

  • Chapter 50
  • (Part 2)
terrestrial biomes1
Terrestrial Biomes
  • Large regions of earth
  • Dependent on Rainfall & Temperature
  • Characterized by specific vegetation & animal life
  • Characteristic biomic progression in terrestrial latitude & altitude in a mountain range
  • Aquatic biomes are very stable due to the high specific heat of water which is due to ________ _____ .
terrestrial biomes2
Terrestrial Biomes

Tundra

Coniferous Forrest

Temperate Broadleaf Forest

Chaparral Temperate Grassland

Savanna Desert

Tropical Rain Forest

tropical rain forest
Tropical Rain Forest
  • Found near to the equator
  • Abundant rainfall, stable temp., & high humidity
  • Only cover 4% of the surface, but accounts for 20% of the Earth’s carbon fixation
  • Most diverse biome
  • 4 vertical zonations – floor, understory, lower canopy, & Dense upper canopy
  • Canopy prevents most light from reaching floor
    • Allows rain water to drip down to the floor
epiphytes
Epiphytes
  • Many trees are covered with epiphytes
    • Photosynthetic plants that grow on other trees rather than supporting themselves
    • Not parasites, but may block too much light

thus leading to death of the host plant

desert1
Desert
  • Insufficient rainfall to even support grass growth
    • Rainfall < 10 inches
  • Most extreme temperature fluctuations of any biome
  • May feature cacti, sagebrush, and other hardy bushes
  • Some small, temporary plants
    • Germinate only after rain – only around for a few weeks
  • CAM plants are common
  • Most animals are active at night (nocturnal)
    • During the day - they burrow underground or hide in shade
    • Reptiles & rodents
savanna
Savanna
  • Grassland with a few trees
  • Fire is a dominant abiotic factor
  • Migrating mammals
  • Plant growth is substantial during rainy season, but adaptations to dry climate
chaparral
Chaparral
  • Mild rainy winters & long, dry summers
  • Plants are adapted for fires
  • Shrubs & small trees highly adapted to dry conditions
  • Southern California & Mediterranean
temperate grassland
Temperate Grassland
  • Covers large swaths of land in both the temperate & tropical regions of the world
  • Characterized by low annual rainfall of seasonal occurrence of rainfall
    • Inhospitable for trees

or forests

  • Grazing mammals
    • bison, gazelle
    • prairie dogs
temperate broadleaf forest
Temperate Broadleaf Forest
  • Located Primarily in the Northeast US &
  • most of Europe
temperate broadleaf forest1
Temperate Broadleaf Forest
  • Also called a Deciduous forest
    • Seasonal loss of leaves
    • Many mammals hibernate in the winter
  • Dense strands of deciduous trees
  • Shows vertical stratification of plants & animals
    • Canopy (upper layer) contains 1 or 2 strata of trees
    • Shrubs are beneath
    • @ bottom, a herbaceous layer (die at the end of the growing season)
  • Soil is rich due to decomposition of leaf litter
  • Squirrels, deer, foxes, & bears
coniferous forest
Coniferous Forest
  • Also called “Taiga” or Boreal Forest
  • Conifers are the most common primary producer
    • Pine, Spruce, and fir = Christmas trees
    • Conical shape of leaves prevents snowfall accumulation and subsequent destruction of leaves
  • Very cold winters
  • Largestterrestrial biome
  • Heavy snowfall
  • Moose, black bear, lynx, elk, & wolverines
tundra
Tundra
  • Permafrost
    • Frozen subsoil found in the extreme North, such as Alaska
  • Commonly referred to as the frozen desert
    • What little rainfall is received cannot penetrate the frozen ground
  • Appearance of gently rolling plains, dotted with lakes & ponds
  • Insects are abundant in summer, hence many birds nest in the tundra during the summer