headwidthsize {pollimetry}

Converts pollinator (Diptera, Hymenoptera and Lepidoptera) head width (mm) to body size (dry weight (mg)).

Description

Calculates dry body weight (mg) using head width (mm) from Hodar (1997).

Usage

headwidthsize(HW, Eq = "H97DB")

Arguments

HW

A vector of head width measurements (mm).

Eq

a vector of predictive allometries for insect taxa from Hodar (1997). Options implemented are: H97DB (Brachycera), H97DN (Nematocera), H97HA (Hymenoptera), H97LH (Heterocera) and H97LR (Rhopalocera).

Value

A dataframe with pollinator body size as dry weight (mg) is returned for each specimen from selected equation.

References

Kendall et al. (2018) Pollinator size and its consequences: Predictive allometry for pollinating insects. <doi:10.1101/397604>

Hodar, J. A. (1997). The use of regresion equations for the estimation of prey length and biomass in diet studies of insectivore vertebrates. Miscellania Zoologica, 20(2), 1-10.

Examples

headwidthsize(HW=c(10,5,2), Eq = c("H97DB"))