ecopath_guinee: EcoTroph example dataset: Guinean data

In EcoTroph: An Implementation of the EcoTroph Ecosystem Modelling Approach

EcoTroph example dataset: Guinean data

Description

This example dataset is extracted from the 2004 Guinean Ecopath model (Gascuel et al., 2009). It provides a template for the input table formatting, the wanted variables names and the different capabilities of this package (used in function's examples).

Usage

data(ecopath_guinee)

Format

A data.frame with 35 observations on the following 8 variables.

group_name

a character vector corresponding to the names of the trophic groups used in the Ecopath model. Has obligatory to be written 'group_name'.

TL

a numeric vector corresponding to the trophic level of the associated trophic groups. Has obligatory to be written 'TL'.

biomass

a numeric vector corresponding to the biomass of the associated trophic groups. Has obligatory to be written 'biomass'.

prod

a numeric vector corresponding to the production on biomass ratio. For the Detritus groups (no P/B value entered in Ecopath), put 0 as a value. Has obligatory to be written 'prod'.

catch.1

a numeric vector corresponding to the catch of the artisanal fleet. A value must be entered for all groups, with a 0-value if no catch are made. Has obligatory to be written 'catch.something'.

catch.2

a numeric vector corresponding to the catch of the industrial fleet. A value must be entered for all groups, with a 0-value if no catch are made. Has obligatory to be written 'catch.something'

accessibility

a numeric vector corresponding to the fraction of the trophic group that can be catch assuming an infinite fishing effort. Has obligatory to be written 'accessibility'.

OI

a numeric vector corresponding to the omnivory index calculated by Ecopath for each trophic group. Has obligatory to be written 'OI'.

Details

No NA are accepted in the dataset (0 for the P/B of the detritus groups, 0 for the catch...). Follow the instructions stated in the variables descriptions. Different fleets can be entered in the model using the following system: catch.1, catch.2, catch.whatyouwant... If there is only one fleet, you just have to put catch as a variable name.

Source

Gascuel et al. (2009) Impact de la peche sur l'ecosysteme marin de Guinee - Modelisation EwE 1985/2005 -

Examples

data(ecopath_guinee)
ecopath_guinee
names(ecopath_guinee)

EcoTroph documentation built on April 13, 2022, 5:27 p.m.