1. Data Manipulation
Forest Ecology
FOR 212

2. Importance Value RD+RF+Rdo
RD=Sort by species, keeping track of those with the species present
RF=use “count” to find amount of stems for species A divide by total of all stems
Rdo= Use “sum” of basal area per species A divided by basal area for all species
Add these three variable to get importance value for each species

3. Descriptive Data
Cover type, aspect class and slope position can all be described as a percentage.
i.e. Number of plots with cover type 28 (4)/ all plots (11) = .36

4. Descriptive Data
Using Chart Wizard these percentages can be presented as a pie chart
Steps include:
“Sort by” function (i.e.cover type),
2. Get “count” by amount of entries per cover type (data -sub-total),
3. Divide this count by 11 (total number of plots),
4. Highlight these values and select “Chart Wizard”
5. Enter title, legend features and percentages

5. Descriptive Data
Slope percent and basal area/acre are simple averages presented on a tract basis
Steps include: Select cell just under column in question, select the function key, scroll through to AVERAGE, confirm data cells and hit enter.

6. Diameter Distribution
Use tree data to plot diameters according to 1 inch classes.
Format cells so that they are rounded into a 1 inch class
Get a count of cells, position count alongside standard classes
Develop chart from this count

7. Species Diversity
Use sort and count to get total number of species A, divided by sum total of all species
Use “LN” in function bar to perform Shannon-Weiner calculation
Probably easiest to copy all 11 plots to a separate table an manipulate data that way
Species richness can be determined by getting a count of the different species present