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Zoo121-lecture7 - Ecosystem Degradation Now that you know...

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Ecosystem Degradation Now that you know how ecosystems should work It’s time to learn all the ways they can be damaged.
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Announcement The first Exam is NEXT TEUSDAY September 20
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Random Fact of the Day There is a type of sea slug that can photosyntheize It absorbs chloroplasts from plants It has all the genes necessary to maintain the chloroplasts
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A short in-class writing assignment What do you think is the most important environmental problem? What do you think causes it? Can it be fixed, and if so, how? Take 5 min write your answer
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The 5 Ds of ecosystem degradation Damage (pollution) Disruption Invasive species Species loss Destruction (habitat loss) Desertification (soil damage) Deforestation
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What Is Ecosystem Damage? Adverse alteration of a natural system’s integrity, diversity, or productivity Major cause is pollution A catfish with mouth tumors, caused by pollution. This fish was caught in the black River, about an hour north of here.
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There are many kinds of pollution Chemicals (water, air) Solid Waste (garbage) Radiation Heat Excess nutrients Light, noise
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Pollution affects systems everywhere Remote ocean sites – ocean currents Entire atmosphere –wind Remote terrestrial areas – atmospheric deposition Acid Rain
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