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Version 7.0    (October 2009)

What’s new in version 7.0?

We have compiled all the programs from Ecological Methodology (2nd ed.) in Delphi 7 and Lahey Fortran LF Express 7.1 for compatibility with all the current Windows systems including Windows XP and VISTA, so that they will install and run on any Windows based system.

In addition to correcting a few minor errors that were found in Version 6 of these programs, we have provided  an improved copy/paste capability from EXCEL to data grids, and improved error trapping and error messages within each program. We increased data input limits for most programs, and the help screens for each program (available as RTF files in a subdirectory) now have an option to print. The total number of procedures is 86. Five programs have been added to the material described in the book Ecological Methodology (1999). Screenshots.

Help screens for all programs for quick reference of the details of program assumptions and equations. These are a synopsis of the material covered in the textbook and are available as RTF files.

Description of program groups:

MARK-RECAPTURE. This group contains 9 programs as follows:

Petersen Method

Schnabel-Schumacher Method

Resight Estimation (Radio-telemetry)

Jolly-Seber Full Model

Zero-truncated Poisson Test of Equal Catchability

Leslie, Chitty and Chitty Test for Marked Animals Equal Catchability

Caughley Closed Population Estimators

Catch-Effort Models for Exploited Populations

Change-in-Ratio Estimators for Exploited Populations 


QUADRAT SAMPLING. This group contains 7 programs from Chapter 4 as follows:

Optimal Quadrat Size and Shape

Poisson Distribution

Negative Binomial Distribution

Goodness-of-fit to a Negative Binomial Distribution

Calculating a Theoretical Negative Binomial Distribution

Aerial Survey Methods

Line Intercept Sampling


 LINE TRANSECTS. This group contains two programs to compute line transect estimators.

Hayne Estimator

Shape-restricted Line Transect Estimator


DISTANCE METHODS. This group contains 5 programs from Chapter 5 for plotless sampling.

Byth and Ripley


Ordered Distance

Variable Area Transect

Point Quarter


SPATIAL PATTERN. This group contains four programs from Chapter 6 to test for random spatial patterns as follows:

Clark and Evans Test

Campbell and Clarke Test

Contiguous Quadrats (TTLQV)

Indices of Dispersion (Quadrat Counts)


SAMPLE SIZE. This group contains 6 programs from Chapter 7 to estimate sample sizes needed as follows:

Continuous Variables - Means

Continuous Variables - Variances

Discrete Variables - Proportions

Discrete Variables - Poisson Counts

Discrete Variables - Negative Binomial Counts

Specialized Ecological Variables


SAMPLING. This group contains 6 programs from Chapter 8 on sampling designs as follows:

Means of Ratios

Stratified Sampling

Construction of Strata

Adaptive Sampling

Multistage Sampling

Ranked Set Sampling


SEQUENTIAL SAMPLING. This group contains 8 programs from Chapter 9 to estimate sequential designs as follows:

Means - Normal Distributions

Variances - Normal Distributions

Proportions - Binomial Distributions

Counts - Negative Binomial Distribution

Stopping Rules – Green’s and Kuno’s

Sequential Schnabel Population Estimates

Iwao's Method for Quadrat Counts


SIMILARITY COEFFICIENTS. This group contains 7 programs from Chapter 11 to estimate similarity as follows:

Binary Coefficients

Euclidean Distance Coefficient

Bray-Curtis Metric

Canberra Metric

Percentage Similarity

Morisita's Index of Similarity

Horn's Index


SPECIES DIVERSITY. This group contains 6 programs to calculate the measures described in Chapter 12 to estimate species diversity:

Species Richness - Rarefaction Method

Species Richness - Jackknife Method for Quadrat Counts

Logarithmic Series

Lognormal Distribution

Simpson's Index of Diversity

Shannon-Wiener Measure

Brillouin's Index of Diversity

Evenness Measures

Bootstrapped confidence limits for species diversity estimators


NICHE MEASURES AND DIET PREFERENCE. This group contains 5 programs from Chapter 15 as follows:

Niche Breadth

Niche Overlap

Habitat and Dietary Preferences

Resource Selection Indices

Rodgers' Index for Cafeteria Food Preferences


SURIVAL. This group contains 7 programs from Chapter 14 as follows:

Conversion of Survival Rates

Life Tables

Expectation of Life

Radio-telemetry Survival Rates

Kaplan-Meier Method

Log Rank Test

Likelihood Ratio Test


EXTRAS. This group contains 13 miscellaneous programs from Chapter 13 and other chapters, as follows:

Significant Digits for Recording Data (Chapter 1)

Binomial Confidence Limits (Chapter 2)

Multinomial Confidence Limits (Chapter 13)

Poisson Confidence Limits (Chapters 2 and 4)

Means and confidence limits from a frequency distribution

Bootstrapped means and confidence limits for ratio or interval data

Logarithmic Transformation Constant in log (X + c) Transformations

Correction for Means from Logarithmic Transformations

Box-Cox Transformation

Repeatability of Measurements

Geometric Mean Regression

Means from Frequency Distributions

Uniform random number generator with constraints


Charles J. Krebs  (krebs@zoology.ubc.ca)

Alice J. Kenney


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