Weighted trophic position

[MKLau]

From Louielle and Loureau 2005

Evolutionary emergence of size-structured food webs.

Trophic position is determined recursively from the bottom to the top of the food web. The trophic position of a target species is defined as the average trophic position of the species it consumes weighted by the proportion of nutrient these represent in the diet of the target species, plus one. For details about the method, see ref. 21.