Computer Programs

RRS
RRS is defined as the ratio of offspring per hatchery parent spawning naturally to offspring per wild (natural spawned) parent spawning naturally (Hinrichsen 2003, Araki et al. 2008). Computer programs written in the statistical computing language R are provided to estimate RRS and the precision of the estimate. One of the programs is designed to correct for bias in the estimate of RRS when the data contain a large number of sampling zeros. The other two programs provide guidance on sample size and statistical power when the null hypothesis is RRS is equal to one.

Documents included in the download provide background information, instructions on how to run the programs, and sample data.

Download RRS.zip

RT Heritage Programs
The package RT (Randomization Testing) was originally written by Dr Bryan Manly to accompany the first and second editions of his book Randomization, Bootstrap and Monte Carlo Methods in Biology that was published by Chapman and Hall in 1991 and 1997. A third edition of the book is available but the original RT package is no longer available for purchase and some parts of the package do not work on modern computers. For this reason most of the important programs in the package have now been compiled to work with 32 bit and 64 bit Windows operating systems and these are now freely available for downloads from this website.

Directions
(a) Make a directory with a suitable name on your computer.
(b) Download the file Read-Me.pdf into the directory. This contains information about the 11 RT programs now available and 13 data files that can be used to test the programs.
(c) Download the file RT-HProg.zip into the directory and unzip it into thhe same directory. This will provide you with all of the RT heritage programs and data sets.
(d) To start a program just click on the name.

Links to other resampling computer software.

http:/www.resample.com

This zip file contains Windows programs for the iterative Mayfields (MAYITER.EXE) and maximum likelihood estimation (BROODMLE.EXE) of survival rates as used for the papers below. When the programs are started the format for the data is described and two example sets of data MAYITER.DAT and BROODMLE.DAT are also in this zip file.

Schmutz, J.A., Manly, B.F.J. and Dau, C.P. (2001). Effects of gull predation and weather on survival of emperor goose goslings. J. Wildl. Manage. 65: 248-57.

Manly, B.F.J. and Schmutz, J.A. (2001). Estimation of brood and nest survival: comparative methods in the presence of heterogeneity. J. Wildl. Manage. 65: 258-70.

Download Survival.zip

Capture-Recapture Routines for the "Handbook of Capture-Recapture Analysis"

The software routines referred to in Chapter 9 of Handbook for Capture-Recapture Analysis are now an official package for R. These routines are available from here.

There are 2 ways to install:
- Download the "windows binary" zip file from CRAN, then from within R, choose "Packages" - "Install from local zip file". When prompted, navigate to the downloaded zip and select okay.
- Start R. Assuming you have a live internet connection, select 'Packages' 'Install packages' from the R menus. A dialog box asking you to choose a nearby CRAN site may appear. If so, select one. Another dialog box should appear listing all the packages available for R. Scroll down to 'mra' (list is alphabetical, and long), select 'mra' and click okay. The binary zip will then download and install automatically.

Important:After installing MRA using either of the above methods, you must load the library prior to accessing the routines. Load the library by issuing the command 'library(mra)" at the R command prompt. If you do not take this step, R will not be able to find the routines. After installation and loading, type "help(mra)" to view detailed documentation.

Download Data Files: MARK input data files