lecture 3 - ECOLOGY LECTURE 3 Wednesday PLEASE NOTE...

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ECOLOGY LECTURE 3 Wednesday, January 19, 2011 PLEASE NOTE: Professor skipped last few slides and emphasized IMPORTANCE OF READING CHAPTER 3 . Know graphs in chapter 3 as well as he hinted they will probably be on exam! -physical environment ultimately determines where organism can live and resources available to it -understanding physical environment directly relates to understanding ecological events -organisms not evenly distributed on earth -climate is most important characteristic of physical environment - climate = long term description of weather based on averages and variation over decades, it determines the geographic distribution of organisms -amount of solar energy per unit surface area on earth is not equal everywhere, greater at equator less at poles -three circulation cells in atmosphere cause three climatic zones: 1. Tropical 2. Temperate 3. Polar -mean temperature variation is low at equator and greater at north and south poles - evapotranspiration is sum of water loss through plants and soil
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lecture 3 - ECOLOGY LECTURE 3 Wednesday PLEASE NOTE...

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