The function estimates mass (g) from length (m) for a variety of taxa.
mass_from_length(l, taxon)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.
character taxon of organism, current choices: "insect", "lizard", "salamander", "frog", "snake", "turtle".
numeric mass (g).
All models follow (m = a lb) with mass in grams and length in meters.
Lizards: Meiri (2010)
:
\(a = 16368.17\)
\(b = 3.022\)
Salamanders: Pough (1980)
:
\(a = 13654.4\)
\(b = 2.94\)
Frogs: Pough (1980)
:
\(a = 181197.1\)
\(b = 3.24\)
Snakes: Pough (1980)
:
\(a = 723.6756\)
\(b = 3.02\)
Turtles: Pough (1980)
:
\(a = 93554.48\)
\(b = 2.69\)
Insects: Sample et al. (1993)
:
\(a = 806.0827\)
\(b = 2.494\)
Meiri S (2010).
“Length - weight allometries in lizards.”
Journal of Zoology, 281(3), 218-226.
doi:10.1111/j.1469-7998.2010.00696.x
.
Pough FH (1980).
“The Advantages of Ectothermy for Tetrapods.”
The American Naturalist, 115(1), 92--112.
ISSN 00030147, 15375323.
Sample BE, Cooper RJ, Greer RD, Whitmore RC (1993).
“Estimation of Insect Biomass by Length and Width.”
The American Midland Naturalist, 129(2), 234--240.
ISSN 00030031, 19384238, doi:10.2307/2426503
.
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()
mass_from_length(l = 0.04,
taxon = "insect")
#> [1] 0.2629767
mass_from_length(l = 0.04,
taxon = "lizard")
#> [1] 0.9759452
mass_from_length(l = 0.04,
taxon = "salamander")
#> [1] 1.060056
mass_from_length(l = 0.04,
taxon = "frog")
#> [1] 5.355816
mass_from_length(l = 0.04,
taxon = "snake")
#> [1] 0.04342753
mass_from_length(l = 0.04,
taxon = "turtle")
#> [1] 16.24075