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Unformatted text preview: grassland-BUT grasses make up more than 75% of the biomass, and fluctuations in biomass are closely tied to climate change in grasslands. In the Great Plains: Northern Great Plains Central Great Plains *look @ latitude & longitude Southern Great Plains short-----------mid grass---------tall--- Soils do strange things to plants / over-rides the effects of climate Southern Great Plains: Precipitation: 15-20 (west) 75% of which occurs 35-40 (east) between April & Sept. Evaporation: approx. 100 (west) 70 (east) rainfall + evaporation = soil depth precipitation/evaporation ratio < 1...
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- Fall '09