The role of intracellular components in food chain dynamics
Authored by PPF Hanegraaf, BW Kooi, SALM Kooijman
Date Published: 2000
DOI: 10.1016/s0764-4469(00)00102-5
Sponsors:
Netherlands Organization for Scientific Research (NWO)
Platforms:
No platforms listed
Model Documentation:
Other Narrative
Mathematical description
Model Code URLs:
Model code not found
Abstract
The dynamics of a simple food web, including multiple substrates and
predator-prey interactions, is studied. An individual-based model is
presented that describes the intracellular composition of the biomass of
each population with two components: reserves and structural biomass.
The model describes the simultaneous uptake of multiple substrates via
specific carriers and their assimilation into reserve energy via
multiple assimilation pathways. The available energy is used for
maintenance and growth. Parameters are estimated by curve-fitting data
from the literature under the condition that the elemental balances and
the enthalpy balances are met. The proposed model provides an adequate
description of the macromolecular composition of biomass. The model is
not too complicated to be of use in the study of food webs. The
consequences of the presence of intracellular components in a food web
on its long-term dynamics are investigated with bifurcation analysis.
(C) 2000 Academie des sciences/ Editions scientifiques et medicales
Elsevier SAS.
Tags
models
kinetics
growth
Transport
Saccharomyces-cerevisiae
Limited chemostat cultures
Maintenance
energy
Heat