plant id notes

plant id notes - grassland-BUT grasses make up more than...

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Aug. 31 st : Biological Species- way of classifying by distinguishing characteristics, common gene pool, inter-fertile, viable offspring Grass- linear leaf, herbaceous (not woody), monocot, a plant that is in the grass family Forb- a herbaceous dicot Weed- defined by utility, “if I don’t want it it’s a weed” Difference between shrub and tree, short/tall, branches at base/top, BOTH woody Classification: Kingdom, Phylum, Class, Order, Genus, Species Grasslands of North America: From Canada Mexico / Indiana California Originally 300,000,000 ha (39% of US) Now 125,000,000 ha (16%) Floristically, grasses may make up less than 20% of the species richness of a
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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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