2.4 Biomes


Assessment 2.4.1: Define the term biome

Biome: a collection of ecosystems sharing similar climatic conditions; large scale bio-geographical region composed of similar species of animal and plant, in a similar climatic region.

A biome has distinctive abiotic factors and species which distinguish it from other biomes.
  • Rainfall
  • Insolation
  • Temperature

external image biomes.jpg

http://www.bio.miami.edu/ecosummer/lectures/lec_biomes.html (More info)

Assessment 2.4.2: Explain the distribution, structure and relative productivity of tropical rainforests, deserts, tundra and any other biome.

Interactively Explore Biomes

Tropical Rainforest
  • Very complex structure and very high biodiversity
  • High rainfall and insolation
  • location at the equator, from sea level up to 1000m and mostly between 10 degrees north and south
  • Have high overall productivity but low individual productivity
File:Amazon Rainforest-bird site.jpg
File:Amazon Rainforest-bird site.jpg

**Deserts**
  • Simple structure and low biodiversity (only specialized plants/animals can survive)
  • Very low rainfall and high insolation
  • Very high temperature with great variation from day to night
  • found at around 20-30 degree north or south of the equator
File:Judea 2 by David Shankbone.jpg
File:Judea 2 by David Shankbone.jpg

Tundra
  • Very low rainfall and temperature
  • Low insolation with variation across the year
  • Very little plant life as the soil were permanently frozen; little biodiversity
  • Found in highest latitudes, mostly in the northern hemisphere
File:Greenland scoresby-sydkapp2 hg.jpg
File:Greenland scoresby-sydkapp2 hg.jpg

Temperate Forest:
  • Complex structure with high biodiversity
  • High rainfall and insolation
  • Found in the mid-latitudes, along the coast
File:Diqing, Yunnan, China.jpg
File:Diqing, Yunnan, China.jpg