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Ecosystem_Changes - Natural EcosystemChange ecosystem...

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Natural Ecosystem Change
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Natural Ecosystem Changes There are many factors that can change an  ecosystem Climate Shifts Species movement Ecological succession
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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
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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
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Greenhouse Effect Solar radiation is trapped inside the Earth’s atmosphere Certain gases (called greenhouse gasses) aid in trapping this 
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