منابع مشابه
Production of planktonic bacteria in Lake Michigan’
Bacterial production rates were estimated for the surface waters of a station 100-m deep in southeastern Lake Michigan during 1984. Production was calculated from incorporation of C3Hmethyllthymidine and from empirical conversion factors determined from dilution experiments performed throughout the study. The conversion factors (with typical C.V. ~40%) varied between 4.7 and 18.3 x lo9 cells pr...
متن کاملCoaggregation between freshwater bacteria within biofilm and planktonic communities.
The coaggregation ability of bacteria isolated from a freshwater biofilm was compared to those derived from the coexisting planktonic population. Twenty-nine morphologically distinct bacterial strains were isolated from a 6-month-old biofilm, established in a glass tank under high-shear conditions, and 15 distinct strains were isolated from the associated re-circulating water. All 44 strains we...
متن کاملA latitudinal diversity gradient in planktonic marine bacteria.
For two centuries, biologists have documented a gradient of animal and plant biodiversity from the tropics to the poles but have been unable to agree whether it is controlled primarily by productivity, temperature, or historical factors. Recent reports that find latitudinal diversity gradients to be reduced or absent in some unicellular organisms and attribute this to their high abundance and d...
متن کاملInfluence of the benthos on growth of planktonic estuarine bacteria
Estuarine planktonic bacteria were incubated (bacterial bioassays) in water previously held in close contact with benthic sediments to assess the potential importance of benthic dissolved organic matter for planktonic bacterial production. The study was conducted using water and sediments collected from along a fresh to salt water gradient in the Parker River and Plum Island Sound Estuary in no...
متن کاملHeterotrophic Planktonic Microbes: Virus, Bacteria, Archaea, and Protozoa
Although heterotrophic marine microorganisms in the open sea have been studied since the late 1800s and early 1900s by pioneers like Fischer, Haeckel, and Calkins (1–3), the contribution of these diminutive species to the food webs of oceanographic systems was not fully recognized until nearly a century later. Attention was drawn to the larger and more conspicuous taxa of photosynthetic protist...
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ژورنال
عنوان ژورنال: Journal of General Microbiology
سال: 1957
ISSN: 0022-1287
DOI: 10.1099/00221287-16-1-268