2. Joelyn K. Foy Research Associate Texas Agricultural Experiment Station Vernon, Texas Why Natural Resources? What do natural resources have to do with the producer?

3. Part A Introduction Why Natural Resources? What do natural resources have to do with the producer?

4. Source: Jenny, p. 358 Over time, soil and vegetation develop … unless

5. Source: Jenny, p. 358 … the process is disturbed

6. Ecosystem ForestPine beetle invasion Lack of natural fire Catastrophic fire Not harvesting Clear-cutting Drought Floods **cropping** Disturbance

7. Ecosystem RangeExotic plant invasion Brush invasion Lack of natural fire Catastrophic fire Not grazing Overgrazing Drought Floods **cropping** Disturbance

8. EcosystemDisturbance Crop or Agroecosystem Weed invasion Insect invasion Drought Floods

9. common brome impenetrable mesquite

10. fuel for fire – but no prescription!

11. end of part a