volume.total {forImage} | R Documentation |
Volumetric calculus of organisms
Description
The function calculates organisms volume based on geometric approximation.
Usage
## S3 method for class 'total'
volume(data, model, ...)
Arguments
data |
data frame containing size data. Size data parameters may vary according to chosen model, see Details. |
model |
character informing geometric model to calculate volume, the models options are listed below:
|
... |
other parameters. |
Details
These geometric models applied in this function are based and adapted from microalgae models developed by Hillebrand et al. (1999) - ('.hl')
, Sun and Liu (2003) - ('.sl')
and Vadrucci, Cabrini and Basset (2007) - ('.v')
, plus other adapted models ('.fs')
.
The models can be a variable in data
if specified as model
.The size data parameters should follow the specified measures determined by each model, where is minor diameter,
is major diameter and
is height.
'1hl'
|
|
'2sl'
|
|
'3hl'
|
|
'4hl'
|
|
'6fs'
|
|
where is a function of test height for trochamminids.
|
|
'7fs'
|
|
'8hl'
|
|
'10hl'
|
|
'11fs'
|
|
'12v'
|
|
'13hlsl'
|
|
'14hl'
|
|
'15hl'
|
|
'17fs'
|
|
Value
A 'data.frame' or numeric object, consisting of calculated individual volume along with biovolume if the pco
is informed.
Author(s)
Thaise R. Freitas thaisericardo.freitas@gmail.com
References
Hillebrand, H., Dürselen, C.D., Kirschtel, D., Pollingher, U., & Zohary, T. (1999). Biovolume calculation for pelagic and benthic microalgae. Journal of Phycology, 35(2), 403–424. doi:10.1046/j.1529-8817.1999.3520403.x
Sun, J., & Liu, D. (2003). Geometric models for calculating cell biovolume and surface area for phytoplankton. Journal of Plankton Research, 25(11), 1331–1346. doi:10.1093/plankt/fbg096
Vadrucci, M. R., Cabrini, M., & Basset, A. (2007). Biovolume determination of phytoplankton guilds in transitional water ecosystems of Mediterranean Ecoregion. Transitional Waters Bulletin, 2, 83–102. doi:10.1285/i1825229Xv1n2p83
See Also
Examples
#Ammonia size data
data("ammonia")
#calculate test volume
volume.total(ammonia, model = "10hl")