The revised edition of a computerized plankton counter for plankton,periphyton and sediment diatom analyses

A revised computer counting program is presented with faster processing and more efficient features to enhance counting precision. The program is now capable of counting epilithic communities and sediment samples for diatom analysis. This version (2.3) is available for APPLE, IBM, TANDY-RADIO SHACK, and HYPERION systems using standard Basic commands. New improvements include, density and biovolume calculations, a Chi square transect test for randomness, D'Agostino's test for a normal taxa distribution and a three file output with raw and processed data.