| Type: | Package |
| Title: | Morphological Allometry of Rorquals |
| Version: | 0.1.1 |
| Description: | Predicts morphological parameters of rorquals (e.g. body mass, flipper length, maximum engulfment capacity) from body length using allometric equations from Kahane-Rapport and Goldbogen (2018) <doi:10.1002/jmor.20846>. |
| License: | MIT + file LICENSE |
| Depends: | R (≥ 2.10) |
| Imports: | dplyr, magrittr |
| Encoding: | UTF-8 |
| LazyData: | true |
| RoxygenNote: | 7.0.2 |
| NeedsCompilation: | no |
| Packaged: | 2020-03-05 19:31:13 UTC; frank |
| Author: | Max Czapanskiy [aut, cre] (ORCID-ID: 0000-0002-6302-905X),
Shirel Kahane-Rapport
 [aut],
Jeremy Goldbogen
[aut] |
| Maintainer: | Max Czapanskiy <maxczapanskiy@gmail.com> |
| Repository: | CRAN |
| Date/Publication: | 2020-03-15 11:30:02 UTC |
Pipe operator
Description
See magrittr::%>% for details.
Usage
lhs %>% rhs
Allometric equations for rorqual morphology
Description
A dataset including the intercepts and slopes of the ordinary least squares allometric regression (in log10 space) of various morphometric parameters against body length. Use the formula 10^intercept * length^slope to predict morphology.
Usage
allometry
Format
A data frame with 5 columns:
- species_code
two letter codes: bw, bp, mn, ba, be, and bs
- binomial
scientific binomials
- morphology
morphological parameter e.g. flipper length, body mass
- slope
slope of the allometric relationship
- intercept
intercept of the allometric relationship
Source
doi: 10.1002/jmor.20846
Generic morphology function
Description
Generic morphology function
Usage
morph_fun(species, length_m, morph)
Arguments
species |
a vector of species codes |
length_m |
a vector of lengths in meters |
morph |
name of the morphological measurement (length one character vector) |
Value
vector of measurements
Power law
Description
Power law
Usage
power_law(a, b, x)
Arguments
a |
intercept of the log10-log10 relationship |
b |
slope of the log10-log10 relationship |
x |
untransformed values for power law calculation |
Value
a vector of power law results
Rorqual bizygomatic skull width
Description
Rorqual bizygomatic skull width
Usage
rorq_bizygomatic(species, length_m)
Arguments
species |
a vector of species codes |
length_m |
a vector of lengths in meters |
Value
a vector of bizygomatic skull widths in m
Examples
# A 22m blue whale
rorq_bizygomatic("bw", 22)
# A 7m minke
rorq_bizygomatic("ba", 7)
Rorqual engulfment capacity
Description
Rorqual engulfment capacity
Usage
rorq_engulf(species, length_m)
Arguments
species |
a vector of species codes |
length_m |
a vector of lengths in meters |
Value
a vector of engulfment capacities in kg of water
Examples
# A 22m blue whale
rorq_engulf("bw", 22)
# A 7m minke
rorq_engulf("ba", 7)
Rorqual flipper length
Description
Rorqual flipper length
Usage
rorq_flipper(species, length_m)
Arguments
species |
a vector of species codes |
length_m |
a vector of lengths in meters |
Value
a vector of flipper lengths in m
Examples
# A 22m blue whale
rorq_flipper("bw", 22)
# A 7m minke
rorq_flipper("ba", 7)
Rorqual fluke length
Description
Rorqual fluke length
Usage
rorq_fluke(species, length_m)
Arguments
species |
a vector of species codes |
length_m |
a vector of lengths in meters |
Value
a vector of fluke lengths in m
Examples
# A 22m blue whale
rorq_fluke("bw", 22)
# A 7m minke
rorq_fluke("ba", 7)
Rorqual projected mandible length
Description
Rorqual projected mandible length
Usage
rorq_mandible(species, length_m)
Arguments
species |
a vector of species codes |
length_m |
a vector of lengths in meters |
Value
a vector of laterally projected mandible lengths in m
Examples
# A 22m blue whale
rorq_mandible("bw", 22)
# A 7m minke
rorq_mandible("ba", 7)
Rorqual mass
Description
Rorqual mass
Usage
rorq_mass(species, length_m)
Arguments
species |
a vector of species codes |
length_m |
a vector of lengths in meters |
Value
a vector of masses in kg
Examples
# A 22m blue whale
rorq_mass("bw", 22)
# A 7m minke
rorq_mass("ba", 7)
Rorqual engulfed water mass to body mass ratio
Description
Rorqual engulfed water mass to body mass ratio
Usage
rorq_massratio(species, length_m)
Arguments
species |
a vector of species codes |
length_m |
a vector of lengths in meters |
Value
a vector of ratios (engulfed water mass to body mass)
Examples
# A 22m blue whale
rorq_massratio("bw", 22)
# A 7m minke
rorq_massratio("ba", 7)
Rorqual ventral groove blubber length
Description
Rorqual ventral groove blubber length
Usage
rorq_vgb(species, length_m)
Arguments
species |
a vector of species codes |
length_m |
a vector of lengths in meters |
Value
a vector of VGB lengths in m
Examples
# A 22m blue whale
rorq_vgb("bw", 22)
# A 7m minke
rorq_vgb("ba", 7)