Option C — Field Botany

Req 8c6b3 — Recording and Graphing Transect Data

8c6b3.

At each site, record observations about the soil and other influencing factors AND do the following. Then make a graph or chart to show the results of your studies.

This is the data page for your transect study. Begin by recording the conditions that may explain plant-community differences: soil moisture, texture, slope, shade, recent disturbance, nearby water, and anything else that changes how plants grow at the two sites.

Requirement 8c6b3a

8c6b3a.

Identify each tree within 10 feet of the transect line.

Work steadily down the full transect and look 10 feet to each side. Use the same width the whole way so your study stays fair. List each tree by common and scientific name if you can. If you are unsure in the field, make a careful note and verify the name later.

Requirement 8c6b3b

8c6b3b.

At each site, record observations about the soil and other influencing factors AND do the following. Then make a graph or chart to show the results of your studies. Measure the diameter of each tree at 4½ feet above the ground, and map and list each tree..

Measure diameter at breast height the same way for every tree. Then map each tree along the transect so you can compare spacing, species mix, and size patterns between the two sites. Your map does not need to be artistic. It needs to be clear and consistent.

Turning the Results Into a Graph or Chart

A bar graph can compare the number of trees by species. A table can compare species, counts, and average diameter. A simple map can show where trees cluster. Choose the format that makes the comparison easiest to explain to your counselor.