1. General Model Information

Name: A wolf population simulation

Acronym: WOLF

Main medium: terrestrial
Main subject: populationdynamics
Organization level: population
Type of model: not specified
Main application: education
Keywords: wolf populations


Rudolph P. Sarna
Maine Maritime Academy
Castine, Maine 04420
Fax :
email: sarna@saturn.caps.maine.edu



WOLF.C simulates wolf population. It is stochastic; that is, individual wolves are born or die depending on the result of a random number generator. The random (actually pseudo-random) number generator uses a 'seed' at the start; this comes from the computer's clock. Therefore, each time you run the program, you can get different answers. This is as it should be: sometimes a population prospers, sometimes it dies out. (The program may have to be run several times to 'seed' a persistent population.) In general, life is rough: it is very hard, both in this simulation and in the real world, to get a stable population going! This simulation is in its very early stages. Currently, it assumes that the wolves live from zero to eight years. From one or two years until the end of their lives, they may have from zero to six pups per year. As the pack size grows, litter size will become smaller. Eventually, the simulation dreamed of will have wolves and prey, all interacting in the same fashion.

Installation and operation instructions may all be found in the WOLF.README and WOLF.C files downloadable from Ecology Software Subjects (see Data below) on the Illinois Natural History Survey Wildlife Ecology Software Server ( a "Magellan" 4 star sight!).

Author of the abstract: R P Sarna

II. Technical Information

II.1 Executables:

Operating System(s): WOLF.C should compile under any standard C compiler, except the routinethat gets the starting number from the clock would have to be changed onsome systems (or let the user choose).

II.2 Source-code:

Programming Language(s): Download this software from: "http://nhsbig.inhs.uiuc.edu/www/educational.html

II.3 Manuals:

II.4 Data:

III. Mathematical Information

III.1 Mathematics

III.2 Quantities

III.2.1 Input

III.2.2 Output

IV. References

A Wolf Population Simulation
rps Microsoft C version
(c) Copyright 1987,'95 R P Sarna

V. Further information in the World-Wide-Web

VI. Additional remarks

Last review of this document by: T. Gabele: Tue Oct 7 1997
Status of the document:
last modified by Tobias Gabele Wed Aug 21 21:44:52 CEST 2002

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