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