Microcomputer Software System for Generating Population Statistics from Electrofishing Data-User's Guide for MicroFish 3.0

摘要

MicroFish (version 3.0) is a microcomputer software system designed for calculating fisheries population statistics from electrofishing data. System output includes maximum-likelihood population estimates, total catches, capture probabilities, removal patterns, lengths, weights, condition factors, and biomass. Relative percentages, standard errors, and confidence intervals are generated for each sampling site and species in the data set. Output options enable the user to create tables or database files which can be used as input for statistical, spreadsheet, or graphics packages. Sample size programs display two- and three-dimensional color graphs for predicting the number of electrofishing passes needed to achieve a desired precision level in the population estimate.