Ecosystem_Changes

Ecosystem_Changes - Natural Ecosystem Change Natural Ecosystem Changes&#2 There are many factors that can change an ecosystem&#2 Climate

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Unformatted text preview: Natural Ecosystem Change Natural Ecosystem Changes  There are many factors that can change an ecosystem  Climate Shifts  Species movement  Ecological succession Climate Shifts  The earth has gone through several warming and cooling periods  Evidence for climate change comes from  Tree rings, fossilized plants, insect and pollen samples, gas bubbles trapped in glaciers, deep ice core samples, lake sediments, dust analysis, and isotope ratios in fossilized remains Albedo  Albedo is reflectivity  Low albedo – water (lakes, oceans)  Moderate albedo – land masses  High albedo – snow and ice  Ice ages are self-reinforcing – positive feedback loop  Atmospheric dust increases albedo  Dust storms, volcanic eruptions, meteor impact Greenhouse Effect  Solar radiation is trapped inside the Earth’s atmosphere  Certain gases (called greenhouse gasses) aid in trapping this heat and increase the greenhouse effect...
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This note was uploaded on 12/29/2010 for the course ENGR 514 taught by Professor Snitter during the Fall '10 term at Oregon Tech.

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Ecosystem_Changes - Natural Ecosystem Change Natural Ecosystem Changes&#2 There are many factors that can change an ecosystem&#2 Climate

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