1. General Model Information

Name: SIM-PEL - simulation of pelagic area of a lake

Acronym: SIM-PEL

Main medium: aquatic
Main subject: biogeochemistry
Organization level: Ecosystems
Type of model: compartment model
Main application:
Keywords: aquatic ecosystem, pelagic area, biomass, energy, xenobiotics, trophic layers,


Prof. Alfred Seitz
University of Mainz
Inst. of Zoology, Abt. V
Phone: +49-6131-394411
Fax : +49-6131-393711
email: seitz@perdix.biologie.uni-mainz.de


D. Oertel
H.-J. Poethke


contents of the model
Simulation of the pelagic area of a lake. Five biotic compartments on three trophic layers and three nutrient compartments are modelled by nonlinear differential equations. Input of the system are abiotic factors such as temperature and radiation.
principles of the model
The cascade of transfer of energy and biomass from photosynthesis by algae to consumption by fish is modelled. The influence of environmental factors and xenobiotics on the parameters of the functions results in the dynamics of biomass over a season and several decades.

II. Technical Information

II.1 Executables:

Operating System(s): DOS, UNIX Type of computer: PC, workstation RAM required: 1-4 MB Disc space: 100 MB (for output) Peripherical software required: none

II.2 Source-code:

Programming Language(s): C

II.3 Manuals:

Complete model documentation: Poethke, H.-J.: Analysieren, verstehen und prognostizieren. Zum Einsatz von mathematischen Modellen und Computersimulationen in der Oekologie, Mainz (1994).

II.4 Data:

III. Mathematical Information

III.1 Mathematics

III.2 Quantities

III.2.1 Input

III.2.2 Output

IV. References

Park, R.A.; O'Neill, R.V.; et al., 1980.
A generalized model for simulating lake ecosystems, Simulation, 23.

Rose, K.A., 1985.
Evaluation of nutrient-phytoplancton-zooplancton models and simulation of ecological effects of toxicants using laboratory microcosm ecosystems., PhD Thesis, Univ. of Washington.

Poethke, H.-J.; Oertel, D.; Seitz, A., 1994.
modelling effects of toxicants on pelagic foodwebs: many problems - some solutions, Ecol. Model., 75/76, pp. 467-473.

V. Further information in the World-Wide-Web

VI. Additional remarks

Additional information
Last review of this document by: T. Gabele: 15.July 1997 -
Status of the document:
last modified by Tobias Gabele Wed Aug 21 21:44:49 CEST 2002

Go back to Register of Ecological Models (R E M)