Class Notes (835,006)
Canada (508,865)
Biology (2,228)
BIO120H1 (1,171)

2- Terrestrial Biomes

2 Pages
Unlock Document

James Thomson

BIO120H1F Online Reading Series – 2 Sept 20 2012 #2 – Terrestrial Biomes Tropical Forest Biomes  Found near equator  Climate has little seasonal variation  High yearly rainfall, constant warm temperatures  Tall trees, ground layer of herbaceous vegetation  Highest biodiversity, highest primary productivity  High productivity b/c nutrients are gained through quick decomposition  Contains half of terrestrial species on earth  Composed of several different sub-biomes: Evergreen rainforest, seasonal deciduous forest, tropical cloud forest, mangrove forest  Net Primary Productivity: 2-3 kg/(m² * year) Savanna Biomes  North and south of tropical forest biomes  Lower rainfall, longer dry seasons  Mix of grasses and small trees  Covers 60% of Africa; a transition from tropical forests to Deserts  Trees are drought deciduous  Dry season fires occur, fire important, releases nutrients  Net Primary Productivity: 400-600 g/(m² * year)  Rich diversity of herbivores, dung beetles important for nutrient recycle Desert Biomes  Occur in band around 15-30 N and 15-30 S o  Cover 26-35% of land area of Earth  Low precipitation (less than 250mm per year)  Variety of deserts (Cold, Hot, high elevation, rain shadow)  Dominated by perennial shrubs with extensive roots  Warm deserts: therophyes make up most of species diversity  Net Primary Productivity: 0-120g/(m² * year) Grassland Biomes  Occur in interiors of continents; some of largest terrestrial animals are found here  Large seasonal temperature variation; very hot summer, very cold winter  High precipitation = tall grass prairie
More Less

Related notes for BIO120H1

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.