1. General Model Information



Main medium: terrestrial
Main subject: populationdynamics
Organization level:
Type of model: not specified
Main application:
Keywords: biological populations, line transects


site administrator (admin@nhsbig.inhs.uiuc.edu).


Illinois Natural History Survey
607 East Peabody Drive
Champaign, Illinois 61820 USA
Telephone: (217) 244-0371
Fax: (217) 333-6294
e-mail: Robert Diehl
Ronald Larkin



DISTANCE (V2.0) estimates the abundance of biological populations. Program TRANSECT and the program update DISTANCE are designed to analyze line transect data as described by Burnham et al. (1980). Both perpendicular distances and sighting angle and sighting distance data can be analyzed with TRANSECT or DISTANCE.

Installation, operation instruction and examples of input files may all be found in the readme and zip files downloadable from Ecology Software Subjects (see Data below) on the Illinois Natural History Survey Wildlife Ecology Software Server ( a "Magellan" 4 star sight!).

Software often requires pkunzip to extract

Author of the abstract: Portions Copyright NAG Inc, 1986, 1989.

II. Technical Information

II.1 Executables:

Operating System(s): Programs TRANSECT/DISTANCE are set up to run with PC/MS-DOS with at least 512k ofmemory and preferably a 8087 math coprocessor.

II.2 Source-code:

Programming Language(s): Fortran 77

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

Burnham, K. P., D. R. Anderson, and J. L. Laake. 1980. Estimation ofdensity from line transect sampling of biological populations. Wildl.Monograph 72:1-202.

V. Further information in the World-Wide-Web

Ecology Software Subject Index

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 21:44:41 CEST 2002

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