Biology Spring 2008 #1

Biology Spring 2008 #1 - Biome characteristics and health:...

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Biome characteristics and health: role of nutrients Ecosystems can change over time. Biogeochemical cycles continued: Imbalances in nutrient cycles—influence the health of an ecosystem. influence the size of the ecosystem can create economic strife Keep in mind that Biomes: interact within the biosphere change over time if the environment changes nutrient cycles are relevant: influence the size of the ecosystem connect different ecosystems Changes in nutrients in 1 ecosystem can affect the health of resources in another. The rate and extent of change can create economic strife can lead to major conflicts in society General biogeochemical (nutrient) cycle in any ecosystem organisms take in nutrients and release wastes: a continuous chemical exchange between life and the abiotic Example: carbon or nitrogen in the atmosphere, phosphorous, water in the soil C,N,P roles in biota and in abiotic reservoir Carbon: backbone of life’s molecules
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Biology Spring 2008 #1 - Biome characteristics and health:...

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