regPB

compteur

pb.mf

TL_out

range.highTL

<p>function used to compute pB for the higest trophic levels</p>

An approach and software for modelling marine and freshwater ecosystems. It is articulated entirely around trophic levels. EcoTroph's key displays are bivariate plots, with trophic levels as the abscissa, and biomass flows or related quantities as ordinates. Thus, trophic ecosystem functioning can be modelled as a continuous flow of biomass surging up the food web, from lower to higher trophic levels, due to predation and ontogenic processes. Such an approach, wherein species as such disappear, may be viewed as the ultimate stage in the use of the trophic level metric for ecosystem modelling, providing a simplified but potentially useful caricature of ecosystem functioning and impacts of fishing. This version contains catch trophic spectrum analysis (CTSA) function and corrected versions of the mf.diagnosis and create.ETmain functions.

Jerome Guitton

EcoTroph

An Implementation of the EcoTroph Ecosystem Modelling Approach

regPB function

function used to compute pB for the higest trophic levels — regPB

function used to compute pB for the higest trophic levels

regPB: function used to compute pB for the higest trophic levels

Description

Usage

Arguments