Kirsch Center

Kristin Sullivan - Environmental Studies

Humans & Ecosystems

 

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Simpler & fewer species and species interactions Dependent on non-renewable energy from fossil fuels Losing nutrients Pollute water and shed it rapidly

Ecosystems are extremely unstable

Increasing population

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Humans enter and animals are decreased at the highest trophic levels first

Decrease trees, birds, fish, crustaceans

Decrease aesthetics and medicines

Increase gas for cars, tractors, lawnmowers; increased fertilizers for farms

Solutions: increase organic farming, increase insulation, increase solar heat, increase use of renewable resources
Grass clippings in plastic bags; increase fertilizers on lawns; modern farming increases erosion, decreases nutrients, and increases pollution

Solutions: organic farming
Impervious surfaces pick up soot, oil, wastes… this goes into gutters and eventually into streams or bays or oceans Pests develop resistance and predators are killed (pesticides)

Solutions:
plant a variety of crops to increase fertility of soil

Decreased diversity of species (natural systems are complex, stable, self-sustaining powered by earth, nourished by recycling of nutrients, diverse habitats)



Contact
email Email: Kristin Jensen Sullivan
Phone: 408.864.8625
Office: KC 214
Office Hours:
Listed to the right of this page.

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Last Updated: 9/8/09
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