TrenchR (version 1.1.1)

mass_from_length: Organism Mass from Length

Description

The function estimates mass (g) from length (m) for a variety of taxa.

Usage

mass_from_length(l, taxon)

Value

numeric mass (g).

Arguments

l

numeric vector of length (m). Can be 1 or more values.
Snout-vent length is used for amphibians and reptiles, except turtles where length is carapace length.

taxon

character taxon of organism, current choices: "insect", "lizard", "salamander", "frog", "snake", "turtle".

Details

All models follow (m = a l^b) with mass in grams and length in meters.

• Lizards: Meiri2010;textualTrenchR:
  
  \(a = 16368.17\)
  \(b = 3.022\)

• Salamanders: Pough1980;textualTrenchR:
  
  \(a = 13654.4\)
  \(b = 2.94\)

• Frogs: Pough1980;textualTrenchR:
  
  \(a = 181197.1\)
  \(b = 3.24\)

• Snakes: Pough1980;textualTrenchR:
  
  \(a = 723.6756\)
  \(b = 3.02\)

• Turtles: Pough1980;textualTrenchR:
  
  \(a = 93554.48\)
  \(b = 2.69\)

• Insects: Sample1993;textualTrenchR:
  
  \(a = 806.0827\)
  \(b = 2.494\)

References

See Also

Other allometric functions: proportion_silhouette_area_shapes(), proportion_silhouette_area(), surface_area_from_length(), surface_area_from_mass(), surface_area_from_volume(), volume_from_length()

Examples

  mass_from_length(l     = 0.04,
                   taxon = "insect")
  mass_from_length(l     = 0.04,
                   taxon = "lizard")
  mass_from_length(l     = 0.04,
                   taxon = "salamander")
  mass_from_length(l     = 0.04,
                   taxon = "frog")
  mass_from_length(l     = 0.04, 
                   taxon = "snake")
  mass_from_length(l     = 0.04, 
                   taxon = "turtle")