11-Outline ecosystems 2008

11-Outline ecosystems 2008 - BSCI 106 Dr. Sara Via From...

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BSCI 106 Fall 2008 p.1 Dr. Sara Via Heat lost through respiration From Communities to Ecosystems Ecosystems: formed by linking multiple communities and their physical environment Ecosystem properties control energy flow and cycling of nutrients and water Can’t be understood by looking only at communities Physical environment creates context for biotic environment Climate and seasonality influenced by Tilt of earth Latitude Location of land masses and mountains Different rainfall/temperature combinations produce very different conditions (BIOMES—more on this later) What cycles, what doesn’t? Nutrients (C, N, P) cycle– they are used over and over again. Water cycles– also reused. Where was that water in your orange juice before you drank it this morning?? Energy doesn’t cycle- comes from the Sun, leaves as heat. Primary Production 98% of sunlight is reflected from the Earth.
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11-Outline ecosystems 2008 - BSCI 106 Dr. Sara Via From...

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