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The Use of Analysis of Variance to Examine the Variations between Samples of Marine Bacterial Populations
Author(s) -
ASHBY R. E.,
RHODESROBERTS MURIEL E.
Publication year - 1976
Publication title -
journal of applied bacteriology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 0021-8847
DOI - 10.1111/j.1365-2672.1976.tb00657.x
Subject(s) - bay , seawater , agar , marine bacteriophage , biology , sample (material) , variance (accounting) , statistics , bacteria , mathematics , ecology , oceanography , chromatography , chemistry , geology , genetics , accounting , business
Studies were made of the variations in the numbers of viable bacteria in Cardigan Bay seawater as estimated using the spread‐plate technique and various marine agar media, the results being examined using analysis of variance. Use of duplicated 500 ml sample bottles enabled the detection of statistically significant variations between samples both in terms of numbers of viable bacteria present and their different responses to different counting media, but an important micro‐distribution was also indicated. Further studies showed large differences between 25 ml samples taken 10 cm apart: these could not be explained in terms of cell aggregation as presently understood.