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Picocyanobacteria and Bacteria in Lake Kinneret
Author(s) -
MalinskyRushanksy Nehama,
Berman Tom
Publication year - 1991
Publication title -
internationale revue der gesamten hydrobiologie und hydrographie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 0020-9309
DOI - 10.1002/iroh.19910760408
Subject(s) - epilimnion , bloom , dinoflagellate , water column , oceanography , stratification (seeds) , environmental science , hydrology (agriculture) , biology , hypolimnion , ecology , geology , botany , dormancy , eutrophication , seed dormancy , germination , geotechnical engineering , nutrient
In Lake Kinneret, we have been monitoring the numbers and depth distributions of bacteria and picocyanobacteria since early 1988. Picocyanobacteria were found throughout the year at all depths, at concentrations ranging from < 10 3 to 10 5 cells·ml −1 . Highest abundances were recorded during summer and fall in the epilimnion. The lowest areal standing stocks occurred from March to May, the period which corresponds to the peak of the annual dinoflagellate bloom. Bacterial numbers ranged from about 10 5 to 10 7 cells·ml −1 . The picocyanobacteria were evenly distributed in the water column during the mixed period. With the onset of thermal stratification and the end of the dinoflagellate bloom the numbers of picocyanobacteria increased rapidly in the epilimnion.