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Enumeration and distribution of bacterial populations of Long Island Sound |
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| Authors: | S Dudley J A Babinchak J T Graikoski |
| Institution: | National Marine Fisheries Service, Northeast Fisheries Center, Milford Laboratory, Milford, CT 06460, U.S.A. |
| Abstract: | Long Island Sound was divided with a total of 25 north-south transects. Ninety-six stations were established along these transects at which sediment and/or water and plankton samples were collected. Total faecal coliforms and total viable bacteria were enumerated from sediments from 53 stations. The presence of vibrios was determined in sediment, water and plankton samples from 186 enrichments. Counts obtained along the Connecticut shore were similar to those along the Long Island shore. No correlation was noted between the prevalence of faecal coliforms and total viable bacteria in sediment from the same station. Dilute seawater medium was superior to Marine Agar (Difco) for the enumeration of bacteria from 34 of the 53 stations tested. Presumptive vibrios were present in 95% of the sediment samples, 51% of the water samples and 100% of the plankton samples. No correlation was observed between the distribution of vibrios and faecal coliforms. |
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