Calculates the fishing mortality rate \(F_{g,i,w}\) by gear, species and
size.
This is a helper function for mizerFMort().
mizerFMortGear(params, effort)A vector with the effort for each fishing gear.
An three dimensional array (gear x species x size) with the fishing mortality
Other mizer rate functions:
mizerEGrowth(),
mizerEReproAndGrowth(),
mizerERepro(),
mizerEncounter(),
mizerFMort(),
mizerFeedingLevel(),
mizerMort(),
mizerPredMort(),
mizerPredRate(),
mizerRDI(),
mizerRates(),
mizerResourceMort()