Unformatted text preview: o Other places have low species diversity – this boreal forest is dominated by only two species of trees • Two key factors correlated with a community’s species diversity o Latitude Latitudinal gradients in species richness Species richness generally declines along an equatorial-polar (latitudinal) gradient. o Geographic area • Ecosystems can range from a microcosm, such as an aquarium o To a large area such as a lake or forest. • The Global energy budget o Primary production in an ecosystem is the amountoflight energy converted to chemical energy by autotrophs during a given time period o...
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- Spring '11