Update Prey Values While Calculating Trophic Levels To Account For Species Who Feed On Species Already Calculated

[sborstein]

From reviews of the manuscript. Example, you have a system with a planktivore, omnivore, and piscivore. The omnivore and piscivore are dependent on the planktivore and the piscivore feeds on both. It would calculate the trophic level of the planktivore, incorporate that in the prey trophic level values, then calculate the omnivore, incorporate that into the prey trophic level, and the calculate the piscivore.

This would require some form of a database for updating values and users supplying an order in which trophic level calculations are to be calculated. It also may become difficult for taxa which are cannibalistic as one would not know the trophic level of the same species ahead of time.