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ECOSYSTEM ECOLOGY II PP. 435-439 PROPERTIES OF AN ECOSYSTEM Species Richness Species Evenness Species- Area Effect 1. Species Richness: # of different types of species • Varies with latitude (closer to equator the more species) • More sun, better climate stability 2. Species evenness: the abundance of each species 3. Measuring biodiversity • High richness and evenness = High biodiversity • ↑species richness and ↑ evenness: ↑ stability (ability to withstand disturbances in the ecosystem) 4. Species- Areas Effect: larger areas contain more species than smaller areas Sites A, C, and D have more richness Sites A and C has the most evenness Which site has the highest biodiversity?