plan a banquet for the class? main dish snack foods beverages forks paper plates cups ...
TRANSCRIPT
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Plan a banquet for the class?
Main Dish Snack foods Beverages Forks Paper Plates Cups Desserts
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VS
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Aquatic Food Production: • Food is harvested from high tropic levels
(large top consumers…example salmon.• Photosynthesis is less efficient by producers
due to light reflection of water
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Terrestrial Food Production:• Most food harvested from low tropic levels
(producers / herbivores)
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Biodiversity Soil Water Air Human Health
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Loss of grasslands forests and wetland for cultivation
Loss of genetic diversity (wild crops replaced with monocrops)
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Erosion Loss of fertility Salinization Desertification Increase soil pH
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Waste water produced Aquifer depletion from increased
irrigation
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Large fossil fuel use in farming equipment causes release of greenhouse gases (CO2, N2O, and CH4)
Pesticide sprays
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Nitrates in Drinking water • Blue baby
Pesticides Bacterial contamination of meat (E.
coli)
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Inputs: Fertilizers, pesticides, fossil fuels, labor, sunlight, water equipment
Characteristics: Heavy use of fossil fuels, lots of farming technology, monocrops (only one crop)
Socio- Cultural: Fast production, large amounts, lots of waste
Environmental impact: loss biodiversity
Outputs: Air pollution , water pollution, wheat/corn, lots of income ($$)
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See “slash and burn” and “shifting cultivation”
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Inputs: lots of human labor, water, sunlight
Characteristics: grow only enough to eat/ low tech
Socio- Cultural: mostly LEDC, poor Environmental impact: maintains
biodiversity, reduces pollution Outputs: Usually mixed crops; corn,
beans and squash (all in same field)
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Inputs: Labor, Cattle feed/ grazing grass Characteristics: large herds of cattle,
used as only food source “Nomadic Herding”
Socio- Cultural: Cattle THE source of life (even used as currency)
Environmental impact: overgrazing, nomadic behavior
Outputs: meat, milk
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Inputs: antibiotics, fish food, cages, labor
Characteristics: fish raised in large quantity
Socio- Cultural: MEDC, employs large number of workers
Environmental impact: growth of algae, water pollution
Outputs: salmon, water pollution
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Inputs: labor, seed Characteristics: fish and rice grown
together in same, self sustaining ecosystem (fed by natural food chain)
Socio- Cultural: LEDC countries, Environmental impact: reduces waste
maintains biodiversity Outputs: rice, fish, income
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Slash and burn- Farmers will “slash” or cut down a forest and burn the area in order to create a field for farming.
Shifting Cultivation- Farmers utilize soil and forests for harvesting wood and crops until soil loses fertility, then they will move to a new area.
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GMO- Genetically Modified Organisms• Change genetic make up of living things to
make them look, feel, and taste different Pesticides- used to kill pest organisms Herbicides- used to kill weeds Fertilizers- used to grow larger crops Irrigation- used to bring in more water Antibiotics/ Growth Hormones- used to
grow healthier and larger animals
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Food production in our country has a direct impact on the lifestyle and income of others around the world
http://vimeo.com/8812686