MASSTIMATE (version 1.0)

AHR1985: Body Mass Estimates Using Anderson el at 1985

Description

This function estimates body mass based on humeral and/or femoral circumferences using the quadrupedal and bipedal equations of Anderson et al. (1985)

Usage

AHR1985(HC=NULL, FC, equation=c("bip", "quad"), data=NULL)

Arguments

HC

an optional value or vector representing humeral circumference (in mm)

FC

a value or vector representing femoral circumference (in mm)

equation

desired estimation equation. Two possible choices: "quad", "bip"

data

an optional object of class = "data.frame" or "matrix"

Value

• estimate.AHR1985
  A numeric value or vector representing the mass estimate(s) in grams

Details

If equation = "bip" then only femoral circumference is needed. Both humeral and femoral circumference are needed to estimate body mass of a quadruped (equation = "quad"). If a data object is specified, the mass estiamtes will be added as a column to the data.frame or matrix within that object.

References

Anderson, J. F., Hall-Martin, A. and Russell, D.A. (1985) Long-bone circumference and weight in mammals, birds and dinosaurs. Journal of the Zoological Society of London A, 207, 53-61. Campione, N. E. and Evans, D. C. (2012) A universal scaling relationship between body mass and proximal limb bone dimensions in quadrupedal terrestrial tetrapods. BMC Biology, 10, 60.

See Also

MASSTIMATE CM1992

Examples

##Dinosaur data from Campione and Evans (2012) for quadrupedal dinosaurs
data(dinos)
dinos<-AHR1985(dinos[,2], dinos[,3], equation = "quad", data = dinos)
dinos