Ecology Sutropical Temperate Boreal

Ecology Sutropical Temperate Boreal - SubTropicalBiomes...

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Sub Tropical Biomes Deserts Mediterranean Shrub lands or Chaparral
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Distribution of Deserts
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Deserts Leaf surface area is reduced or leaves are completely absent. Spines and thorns are common and water is stored inside the stems. Photosynthetic metabolism is altered to allow for carbon fixation to occur at night. Members of the cactus family predominate in the American deserts
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Sparse Grasses
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Sonora Desert
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Columnar Cacti
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Great Basin Desert in Eastern Oregon  and Washington States
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Lower Colorado Desert
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Joshua Treesin the Mohave Desert
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Organ Pipe Cacti
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Sand Dunes
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Thorn Scrub Desert
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Desert in Spring after Rains
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Mediterranean Scrub or Shrub  Lands or Chaparral California, Southern Europe, Chile, South Africa and coastal Australia .
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Chaparral
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California Chaparral Dense, low, scrub. Slopes and hills. Occur below 2,000 meters.
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Many Adaptations to Fire Fire-induced flowering, bud production and sprouting. In-soil seed storage. Fire-stimulated germination and dispersal.
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Fire Cycle Chaparral recovers from fire in about 10 years
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Fire Cycle After 2 – 3 years, perennials come back. Includes Chamise, coastal sage, and manzanita. Small trees come back from stump sprouting.
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Hydrophobic Soils Fires burn very hot (600 – 700 degrees o C). Waxy resin residue from burned plants forms impermeable layer just below ground surface. Water runs off, causes flooding.
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This note was uploaded on 01/23/2012 for the course BIOL/EVPP 307 taught by Professor Crerar during the Summer '11 term at George Mason.

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Ecology Sutropical Temperate Boreal - SubTropicalBiomes...

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