ecopath_guinee {EcoTroph} | R Documentation |
EcoTroph guinean data
Description
This dataset is extract from the 2004 Guinean Ecopath model (Gascuel et al., 2009). It gives a model for the variables wanted names and table format, and the different possibilities 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
- name of the trophic groups used in 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 of the trophic groups. Has obligatory to be written biomass.
prod
- a numeric vector corresponding to the production/biomass rate. For the Detritus groups (no P/B value needed in Ecopath), put 0 as a value. Has obligatory to be written prod.
catch.1
- a numeric vector corresponding to the catch of the traditional fleet. For all the groups a value must be entered, 0 if no catch are maid
catch.2
- a numeric vector corresponding to the catch of the industrial fleet. For all the groups a value must be entered, 0 if no catch are maid
accessibility
- a numeric vector corresponding to the fraction of the trophic group that can be catch supposing 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 groups. Has obligatory to be written OI.
Details
No NA are possible in the dataset (0 for the P/B of the detritus groups, 0 for the catch...). Follow the instructions developed in the variables descriptions. Different fleets can be entered in the model using the following system: catch.1, catch.2... If there is only one, 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 -
References
Gascuel et al. (2009) Impact de la peche sur l'ecosysteme marin de Guinee - Modelisation EwE 1985/2005 -
Gascuel et al. (2009) EcoTroph (ET): a trophic level based software for assessing the impacts of fishing on aquatic ecosystems.
Examples
data(ecopath_guinee)
ecopath_guinee
names(ecopath_guinee)
fix(ecopath_guinee)
[Package
EcoTroph version 1.1
Index]