Transpose {EcoTroph}R Documentation

ET Transpose Function

Description

Transpose enables the conversion of data pertaining to specific taxa or functionnal groupings into data by trophic classes. Data can be catches, biomasses or production in order to produce continuous distributions of those variables over trophic levels.

Usage

Transpose(tab_smooth, ecopath, column)

Arguments

tab_smooth is the table returned by the create.smooth function.
ecopath is the table returned by the Ecopath routine. The different varaiables are the group name, its trophic level, biomass, production and consumption ratio, catches, omnivory index and accessibility (fraction of the group that can be catch supposing an infinite fishing effort).
column is the table ecopath column name of the variable you want to transpose (for example "biomass" or "catch").

Value

The function returns a table of the choosen variable split into the defined trophic classes per ecopath group.

Author(s)

Colleter Mathieu and Guitton Jerome.

References

Gascuel et al. (2009) EcoTroph (ET): a trophic level based software for assessing the impacts of fishing on aquatic ecosystems.

See Also

create.smooth function to create the Smooth, plot.smooth.R to plot the smooth function, plot.Transpose.R to plot the trophic spectra.

Examples

data(ecopath_guinee)
Transpose(create.smooth(),ecopath_guinee,"biomass")
Transpose(create.smooth(),ecopath_guinee,"catch.1")

[Package EcoTroph version 1.0 Index]