foraging ecosystem
Post on 16-Oct-2021
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Soil
Nutrients Water
Sun
Air
Energy
Carbon, Oxygen
Humans
Labor: Collecting Processing
Useful plant
Useless plant
Foraging Ecosystem
Nutrients Fibers Drugs Decorations Etc.
Soil
Nutrients Water
Sun
Air
Energy
Carbon, Oxygen
Humans
Labor: Clearing Burning Planting Fencing Weeding Harvesting Pest Control Storage Etc.
Useful plant
Useless plant
Shifting Agricultural Ecosystem
Nutrients Fibers Drugs Decorations Etc.
Fallow area
Nutrients Water
Sun
Air
Energy
Carbon, Oxygen
Humans
Labor: Clearing Burning Planting Fencing Weeding Harvesting Pest Control Storage Etc.
Useful plants
Useless plant
Shifting Agricultural Ecosystem
Nutrients Fibers Drugs Decorations Etc.
Farmed area
Decomposition
Ashes
Less recently farmed
More recently farmed
Sun
Air
Energy
Carbon, Oxygen
Humans
Labor energy: Plowing Harrowing Planting Fencing Weeding Harvesting Pest Control Storage Etc.
Useful plants (crops)
Intensive Agricultural Ecosystem
Nutrients Fibers Drugs Decorations Etc.
FARMLAND
Nutrients Water
Water source
Irrigation
Animals
Traction energy
Manure (nutrients)
Labor energy
Agricultural Intensification
Foraging Shifting Agriculture
Intensive Agriculture
Energy input per unit of land
Energy output per unit of land
Net energy/ land Output/input ratio
Poplation density Surplus
Agricultural Intensification
Dietary Implications of Intensification
The First Intensive Agricultural Societies
Map Source: http://anthro.palomar.edu/subsistence/sub_5.htm
Construction of the Aztec Chinampas, Mexico, 14th Century
Rice around the world
So what else lives in rice paddies?
Nitrogen Sources
Dietary Tradeoffs
Sun
energy: Plowing Harrowing, Planting Fencing, Weeding Harvesting, Pest Control, Storage, etc.
Industrial Monocrop Agricultural Ecosystem
FARMLAND
Air
Energy
Carbon, Oxygen
Humans
Single crops
Nutrients Water
Water source
Irrigation
Fossil Fuel
Machinery
Fertilizer Nutrients
$ -cides
Exchange Value
Consumer goods
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