Question

1. how might we be able to determine the total biomass of the catfish population?
2. extrapolate the total algal biomass present in the pool from your data and the area.
3. define the 10% rule.

Explanation:

6.

One could use sampling - capture a representative sample of catfish, measure their biomass (e.g., weight), and then estimate the total population size through techniques like mark - recapture. Multiply the average biomass per catfish in the sample by the estimated total population number.

First, measure the algal biomass in a small, representative sub - area of the pool. Then, determine the ratio of the sub - area to the total area of the pool. Multiply the measured biomass in the sub - area by the ratio of the total area to the sub - area.

In an ecological energy pyramid, only about 10% of the energy available at one trophic level is transferred to the next higher trophic level. This is due to energy losses through processes like respiration, heat loss, and incomplete digestion.

Answer:

Use sampling and mark - recapture techniques to estimate population size and then multiply by average biomass per individual from a sample.

7.