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Lesson 5

 

 

 

Lesson 8 

 

 Primary Productivity Table

 Ecosystem Type

 Net Primary Productivity
(Kilocalories / square meter / year)

 Approximate Kilocalories
per square meter per day
Growing Season

 Rainfall per year in inches
 Tropical Rain Forest

 9000

 25

 365 days

 More than 60
 Estuary (the place where a river meets the sea)

 9000

 25
   
 Swamps and Marshes

 9000

 25
   
 Savanna (grass, scattered trees, little or no winter snow)

 3000

 8
   
 Deciduous Temperate Forest

 6000

 16
more than 120 days

 30-60
 Boreal Forest (Evergreen Coniferous Forest)

 3500

 10
 less than 120 days

 12-33
 Temperate Grassland (cold winters)

 2000

 6
 

 10-30
 Polar Tundra

 600

 2
 

 Less than 10
 Desert

 < 200

 1
 

 Less than 10

This table is from http://www.geog.ouc.bc.ca/physgeog/contents/9l.html an online Geology course created by Dr, Michael Pidwirny at Okanagan College, British Columbia, Canada.
(Dr Viau's additions are in red)