Results 231 to 240 of about 82,416 (267)

Light scattering by marine heterotrophic bacteria

Journal of Geophysical Research: Oceans, 1992
Mie theory is applied to estimate scattering by polydispersions of marine heterotrophic bacteria, and a simple expression is derived for the bacterial scattering coefficient. The error incurred in deriving bacterial optical properties by use of the van de Hulst approximations is computed.
Osvaldo Ulloa, Shubha Sathyendranath, Trevor Platt, Renato A. Quiñones   +3 more
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Heterotrophic Potential of Bacteria

1994
This chapter is concerned with the study of the heterotrophic potential of bacterial assemblages, an approach that has been widely used since its introduction by Parsons and Strickland (1962), Hobbie and Wright (1965a,b), and Wright and Hobbie (1965, 1966).
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Grazing of attached bacteria by heterotrophic microflagellates

Microbial Ecology, 1987
Four species of heterotrophic microflagellates were examined for their ability to graze attached and unattached bacteria. The species tested displayed pronounced differences in their ability to graze the bacteriumPseudomonas halodurans attached to chitin particles.
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Magnetic properties of heterotrophic bacteria (abstract)

Journal of Applied Physics, 1994
The magnetic properties (magnetic susceptibility and saturation magnetization) of six species of heterotrophic bacteria were studied: alcaligenes faecalis 81, arthrobacter globiformis BKM 685, bacillus cereus 8, leptothrix pseudo-ochracea D-405, proteus vulgaris 14, and seliberia stellata.
Nadezda V. Verkhovceva, Irina N. Glebova, Anatoly V. Romanuk   +2 more
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Heterotrophic bacteria in Long Island Sound

Marine Biology, 1970
Correlated with a study of heterotrophic bacteria from cultures of larval bivalve molluses, bacteria were studied from the water column over an oyster bed in Lont Island Sound, USA. Samples taken biweekly for 1 year showed bacterial densities ranging from 1.2x103/ml in summer to 3.8x104/ml in winter.
R. A. Murchelano, C. Brown
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Heterotrophic Bacteria and Bacterivorous Protozoa in Oceanic Macroaggregates

Science, 1982
Oceanic macroaggregates (marine snow and Rhizosolenia mats) sampled from the Sargasso Sea are associated with bacterial and protozoan populations up to four orders of magnitude greater than those present in samples from the surrounding water.
D A, Caron, P G, Davis, L P, Madin, J M, Sieburth   +3 more
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Characterization of psychrotolerant heterotrophic bacteria from Finnish Lapland

Systematic and Applied Microbiology, 2006
A total of 331 aerobic heterotrophic bacterial strains were isolated from various ecosystems of Finnish Lapland (68-69 degrees N) including forest soil, arctic alpine-tundra soil, stream water, lake and mire sediments, lichen and snow algae. Whole cell fatty acid and 16S rRNA gene sequence analysis and microscopy indicated that the isolates were ...
Männistö, M.K., Häggblom, M.M.
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Widespread Production of Extracellular Superoxide by Heterotrophic Bacteria

Science, 2013
Sending Out an ROS The global imprint of biological activity in aquatic environments is often considered a consequence of enzyme-mediated redox reactions that support metabolic activity, such as reducing oxygen during respiration.
Julia M, Diaz, Colleen M, Hansel, Bettina M, Voelker, Chantal M, Mendes, Peter F, Andeer, Tong, Zhang   +5 more
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Monitoring Heterotrophic Bacteria in Potable Water

1990
Measurements of bacterial populations in water have been used since the beginning of sanitary bacteriology (see Chapter 21), and interest in the interpretation of the results has occupied many researchers over the intervening years. In addition to the coliform count, a more generalized bacterial counting procedure has also been used.
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Some reflections on microbial competitiveness among heterotrophic bacteria

Antonie van Leeuwenhoek, 1985
The results of a large number of studies on microorganisms subjected to various degrees of substrate limitation have led to the idea that many species are particularly well adapted to growth at a very low rate at extremely low nutrient concentrations. The possible similarity between this type of bacteria and oligotrophic species is discussed.
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