A forest plot of 2 hectares has 3 banyan trees and 840 tufts of grass…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
A forest plot of hectares has banyan trees and tufts of grass.
- What is the density of the banyan trees for each hectare?
- What is the density of the grass tufts for each hectare?
- The trees together have a much larger biomass than the tufts. Which measure of density tells more about how much living matter there is?
Need a reminder? The key ideaShow
A population changes by . The birth rate is and the death rate is for each individual in a stated time. The density can also be given as a biomass or a percent cover.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Given. Area ha. Banyan trees: . Grass tufts: .
Plan. Divide each number by the area.
Step 1. (a) trees for each hectare.
Step 2. (b) tufts for each hectare.
Step 3. (c) The biomass is the better measure. A number counts a huge tree and a small tuft as one each.
Answer: for each hectare; for each hectare; the biomass.
Check. The number of tufts is large, but the trees can hold more living matter.
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