mass_from_length: Organism Mass from Length

In TrenchR: Tools for Microclimate and Biophysical Ecology

Organism Mass from Length

Description

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

Usage

mass_from_length(l, taxon)

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: \insertCiteMeiri2010;textualTrenchR:
  
  a = 16368.17
b = 3.022

• Salamanders: \insertCitePough1980;textualTrenchR:
  
  a = 13654.4
b = 2.94

• Frogs: \insertCitePough1980;textualTrenchR:
  
  a = 181197.1
b = 3.24

• Snakes: \insertCitePough1980;textualTrenchR:
  
  a = 723.6756
b = 3.02

• Turtles: \insertCitePough1980;textualTrenchR:
  
  a = 93554.48
b = 2.69

• Insects: \insertCiteSample1993;textualTrenchR:
  
  a = 806.0827
b = 2.494

Value

numeric mass (g).

References

\insertAllCited

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")

TrenchR documentation built on Sept. 14, 2023, 1:07 a.m.