Title: Null Model Analysis for Ecological Data
Authors@R: c(person("Nick", "Gotelli", role = c("aut"),
person("Edmund", "Hart", role = c("aut","cre"),
person("Aaron", "Ellison", role = c("aut"),
Description: Given a site by species interaction matrix, users can make inferences about species interactions by performance hypothesis comparing test statistics against a null distribution. The current package provides algorithms and metrics for niche-overlap, body size ratios and species co-occurrence. Users can also integrate their own algorithms and metrics within these frameworks or completely novel null models. Detailed explanations about the underlying assumptions of null model analysis in ecology can be found at http://ecosimr.org.
Packaged: 2015-04-03 17:57:52 UTC; edmundhart

Author: J. Guitton and M. Colleter, D. Gascuel
Description: EcoTroph is 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 level as the abscissa, and biomass flows or
related quantities as ordinate. Thus, trophic ecosystem
functioning can be modelled as a continuous flow of biomass
surging up the food web, from lower to higher trophic levels,
because of predation and ontogenic processes. Such an approach,
wherein species as such disappear, may be regarded as
constituting 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

Author: J. Guitton and M. Colleter, D. Gascuel, Paul Gatti

Title: An Implementation of the EcoTroph Ecosystem Modelling Approach
Author: J. Guitton, M. Colleter, P. Gatti, and D. Gascuel
Description: 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.
Depends: XML, utils, stats, graphics, grDevices