Announcing Population Estimation by Removal Sampling

Richard Seaby Richard at irchouse.demon.co.uk
Tue May 26 10:38:34 EST 1998


Announcing Population Estimation by Removal Sampling

A new Windows 95 program from PISCES Conservation Ltd

Population Estimation by Removal Sampling features three easy to use
methods: 
- Constant probability of capture - the maximum likelihood method of
Zippin.
- Variable probability of capture maximum likelihood method - the
probability of capture during the first sample differs from that in
subsequent samples which are assumed constant.
- A regression method.

Using maximum likelihood methods the program calculates a population
estimate, the upper and lower 95 % confidence intervals and the
probability of fit of the model.

The program is easy to use and presents results graphically. Graphs can
be exported and printed in a variety of formats including metafiles and
bitmaps. While designed for the professional biologist the program is
readily used by students. 

Removal Sampling is particularly useful for: 
- The estimation of fish densities using data collected by electric
fishing: 
- Small mammal population estimation using traps.
- Studies on insects that live in small, discrete populations that can
be sampled using techniques such as sweep netting or pitfall traps.

Removal Sampling allows almost instantaneous comparison of the various
methods and rapid sub-division of the data. Data from spreadsheets such
as Excel can be imported as CSV files.

Price 50 Pounds Sterling UK (+VAT in EU)

Postage and packing - within UK 2 Pounds Sterling UK, rest of world 5 
Pounds Sterling UK.

Total cost with EU 61.10 Pounds Sterling UK inc Vat

We accept Visa, Mastercard and Delta credit cards by phone, fax or email

Cheques to be made payable in pounds sterling

For more information visit our web site at
http://www.irchouse.demon.co.uk
Dr Richard Seaby
PISCES Conservation Ltd     
IRC House
The Square
Pennington          Tel     - 44 (0)1590 676622
Lymington           Fax     - 44 (0)1590 675599
Hants               Email   - pisces at irchouse.demon.co.uk
SO41 8GN            Website - Http://www.irchouse.demon.co.uk





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