Combine trophic level data — select

Fishbase contains Trophic level data in several locations. We use the field: DietTroph as our main measure of Trophic Level (ecology table) If this is absent we resort to the field: FoodTroph (ecology table) then finally EstTroph (estimate table)

select_troph(DietTroph, FoodTroph, EstTroph)

Arguments

DietTroph	Numeric vector. Value of Trophic level
FoodTroph	Numeric vector. Value of Trophic level param EstTroph Numeric vector. Value of Trophic level

Value

Numeric vector. combined vectors of Trophic level