ESR 101 Lab Week 3:
Outline of this lab session:
- Quiz on plant
- Review the barriers and impedimants to promoting biodiversity
- Description of what to look for when comparing two hypotheses
- Demonstration on how to create a grid and generate random points or areas to sample and how to sample
- Time to work on simulations and assignment 2
1. The quiz
2. Barriers to biodiversity
Discuss possible barriers to increasing or conserving biodiversity in the Portland metropolitan area, including
- corridors (good, bad, absence of)
- connectivity/fragmentation
- size of natural areas and edge effects
- invasives
- availability of suitable range of habitat types
- soil
3. Importance of looking for and comparing several mechanisms
- Examin the assumptions - how are they the same or different
- What are the predicted outcomes
and how are they different
- This is an example of the use of simulations
- Avoid traps or surprises that might occur when you only look at one approach
4. Demonstration of collecting biodiversity data from a plot
- layout a grid of 10 x 10 squares
- generate 20 random points (using Excel or a table)
- sampling points or areas (are you measuring in the middle of the square or the whole square)
- assignment for the field
- one plot over an area that looks pretty homogeneous
- on plot over an area that includes an obvious clump, gradient or boundary
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