Our group was unable to calculate biomass for each species because we did not take a batch weight of each species, only of each pass. An example of how to estimate biomass is listed below. The total estimated biomass for our site is 16.14 pounds or 7.33kg per hectare. Listed below are some terms and concepts of how fisheries scientists use things like density and biomass to make predictions about populations of fish. A fisheries scientist would want to know density for several reasons, especially over time.
Density is required for several management decisions.
Density is the number of organisms per unit area. Density tells us the number of fish that the water is supporting. If density decreases over time, it could hint at problems in the fish population. Or if the density is cyclical, it may just be changes in population dynamics. Carrying capacity can also be calculated using density-dependant effects.