Jared Worley

Basic Needs of Organisms (Covers LS 4)

The student will investigate and understand that the basic needs of organisms must be met in order to carry out life processes. Key concepts include:

• Plant needs (light and energy sources, water, gases, nutrients)
• With the concentration on light

Introduction:

• What is clearcutting?
• Is clearcutting good or bad?
• Are there any other harvesting techniques that you know?
• What are your favorite trees? (list as many as possible)

Main body:

• What plants need? (light, water, and nutrients)
• How light and plants interact
  • Define Silviculture
  • How different harvesting affects light
  • How different light levels determines species regeneration
• Shade tolerance for different tree species
• Initial light regimes produced by barious silvicultural regeneration systems (Graph)

Three key points:

• How light affects leaves (sun leaves vs. shade leaves)
• Light regimes (different harvesting methods)
• Light tolerance (tolerant, intolerant, intermediate)

Hands on tools:

• Determine sun leaves vs. shade leaves
• Question and answer

Conclusion:

• What is clearcutting?
• Is clearcutting good or bad?
• Are there any other harvesting techniques that you know?

 

• Bonus material - discuss current environmental issues.