Biomes Summary

Biome Temperature Ranges

• Tropical Biomes: >20 degrees (includes subtropical deserts)
• Boreal/Tundra Biomes: < 5 degrees
• Temperate Biomes: 5-20 degrees (includes woodlands/shrublands)

Tundra Biomes

• Plants adapted to cold temperatures and low soil productivity.
• Low temperatures, precipitation, and species diversity year-round.
• Brief summers.
• Soil: low nutrients, high organic matter (acidity).
• Growth influenced by temperature.

Boreal Forest Biomes

• Coniferous trees adapted to cold climates and short summers.
• Soil: thin and acidic.
• Needles: thick cuticles for extreme cold.
• Roots: thick and fibrous.
• Increases in logging and oil extraction.

Temperate Rainforest Biomes

• Soil: dense with lots of organic matter.
• Temperature lower than precipitation (rain shadows).
• High precipitation.
• Lots of coniferous trees.

Temperate Seasonal Forest Biomes

• Less rainfall than temperate rainforests.
• Abundance of deciduous trees (lose leaves in fall).
• Fertile soil.

Shrubland/Woodland Biomes

• Extremely low precipitation in summer.
• Susceptible to forest fires.
• Wet winters and dry summers.

Temperate Grassland Biomes

• Dry summers and harsh winters.
• Productive soils.
• Low precipitation.

Tropical Rainforest Biomes

• Most diverse biome.
• Clay = $Al<em>2O</em>3$

Savannah/Tropical Seasonal Forest Biomes

• Drought in summer.
• Warm temperatures.
• Plant growth influenced by precipitation.