joelyn k. foy research associate texas agricultural experiment station vernon, texas why natural...
TRANSCRIPT
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Joelyn K. Foy
Research Associate
Texas Agricultural Experiment Station
Vernon, Texas
Why Natural Resources?What do natural resources have
to do with the producer?
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Part A
Introduction
Why Natural Resources?What do natural resources have
to do with the producer?
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Source: Jenny, p. 358
Over time, soil and vegetation develop … unless
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Source: Jenny, p. 358
… the process is disturbed
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Ecosystem
Forest Pine beetle invasionLack of natural fireCatastrophic fireNot harvestingClear-cuttingDroughtFloods
**cropping**
Disturbance
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Ecosystem
Range Exotic plant invasionBrush invasionLack of natural fireCatastrophic fireNot grazingOvergrazingDroughtFloods
**cropping**
Disturbance
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Ecosystem Disturbance
Crop orAgroecosystem
Weed invasionInsect invasionDroughtFloods
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common brome
impenetrable mesquite
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fuel for fire – but no prescription!
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end of part a