1. General Model Information
Name: Hopper Decision Support System
Acronym: HOPPER
Main medium: terrestrial
Main subject: populationdynamics
Organization level: landscape
Type of model: not specified, static-algebraic equations
Main application: decision support/expert system
Keywords: rangeland, grasshopper population,
Contact:
Jim Berry
ARS
Rangeland Insect Lab
Bozeman, MT 59717-0366
Phone: 406-994-3344
Fax: 406-994-3566
email: Berry@ril.usda.montana.edu
Author(s):
Abstract:
The Hopper Decision Support System (HDSS) is an expert system designed to
examine management strategies on rangeland grasshopper populations in the
Western United States. It is currently used by USDA-APHIS to delimit
quarantine blocks in large areas of grasshopper populations. Users of the
model provide grassland grasshopper species densities, weather and location
information to the model. Life stages of grasshoppers are simulated over time
and economic options are provided to the user (e.g. when to sell cattle or buy
hay).
Author of the abstract:
CIESIN (CONSORTIUM FOR
INTERNATIONAL EARTH SCIENCE INFORMATION NETWORK):
II. Technical Information
II.1 Executables:
Operating System(s): TBM PCs
II.2 Source-code:
Programming Language(s): Pascal
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
Davis, et al. 1992. "The economic threshold for grasshopper control onpublic rangelands". Journal of Ag. and Res. Econ. 17: 56-65.
Berry, et al. 1992. "Hopper DecisionSupport System: Rangeland grasshopper management for the 1990's". Fourth InternationalConference on Computers in Agriculture Exten, ASAE.
V. Further information in the World-Wide-Web
VI. Additional remarks
This model can be used to examine economic consequences of largepopulation changes in grasshopper populations in the western United States. This model is currently being used to examine the effectiveness of twograsshopper fungal pathogens on grasshopper populations.
Source : CIESIN Report
Last review of this document by: 10.7. 1997
Status of the document:
last modified by
Tobias Gabele Wed Aug 21 21:44:44 CEST 2002