abstract：:Abstract In this study, two different agricultural soils were investigated: one organic soil and one sandy soil, from Stend (south of Bergen), Norway. The sandy soil was a field frequently tilled and subjected to crop rotations. The organic soil was permanent grazing land, infrequently tilled. Our objective was to com...

journal_title：Microbial ecology

authors： Øvreås L,Torsvik V V

更新日期：1998-11-01 00:00:00

abstract：:Viable bacteria were found in permafrost core samples from the Kolyma-Indigirka lowland of northeast Siberia. The samples were obtained at different depths; the deepest was about 3 million years old. The average temperature of the permafrost is -10 degrees C. Twenty-nine bacterial isolates were characterized by 16S rD...

journal_title：Microbial ecology

authors： Shi T,Reeves RH,Gilichinsky DA,Friedmann EI

更新日期：1997-05-01 00:00:00

abstract：:Photosynthetic carbon fixation by phytoplankton is a key component of the global carbon cycle. Our understanding of the types of picoplankton and ultraphytoplankton involved in this process is evolving. However, mechanisms of regulation of photosynthetic carbon fixation in the oceans are poorly understood. All phytopl...

journal_title：Microbial ecology

authors： Paul JH

更新日期：1996-11-01 00:00:00

abstract：:The ability of intraperiplasmic and attack phase bdellovibrios to survive and/or grow under anoxic and microaerobic conditions was examined. Both halotolerant and nonhalotolerant bdellovibrio strains were examined. In all instances, the bdellovibrio strains were unable to grow under anoxic conditions, but were able to...

journal_title：Microbial ecology

authors： Schoeffield AJ,Williams HN,Turng B,Fackler WA Jr

更新日期：1996-07-01 00:00:00

abstract：:Assimilation of 35S-precursors into microbial proteins was used to investigate toxicity and adaptational responses that occur in nutrient enriched and natural freshwater samples experimentally contaminated with benzene, toluene, trichloroethylene (TCE), or xylene. Experiments were conducted to analyze (1) the potentia...

journal_title：Microbial ecology

authors： Ogunseitan OA

更新日期：1996-05-01 00:00:00

abstract：:In 1991 and 1992, the Latin American epidemic strain of Vibrio cholerae O1 was isolated from ballast water, bilge water, and sewage taken from cargo ships docked in Mobile Bay, Alabama. The findings raised questions regarding the organism's ability to survive long-term aboard ships and to withstand the exchange of bal...

journal_title：Microbial ecology

authors： McCarthy SA

更新日期：1996-03-01 00:00:00

abstract：:Nickel (Ni) toxicity to growth and photosynthesis was studied in four strains of Scenedesmus acutus f. alternans. Effects of Ni dosage and duration of exposure on growth and photosynthesis were strain specific. Large differences in responses of both growth and photosynthesis to Ni were detected between three resistant...

journal_title：Microbial ecology

authors： Jin X,Nalewajko C,Kushner DJ

更新日期：1996-01-01 00:00:00

abstract：:The detrital food web is a major nexus of energy flow in nearly all aquatic ecosystems. Energy enters this nexus by microbial assimilation of detrital carbon. To link microbiological variables with ecosystem process, it is necessary to understand the regulatory hierarchy that controls the distribution of microbial bio...

journal_title：Microbial ecology

authors： Sinsabaugh RL,Findlay S

更新日期：1995-09-01 00:00:00

abstract：:The depth-dependent, seasonal, and diel variability of virus numbers, dissolved DNA (D-DNA), and other microbial parameters was investigated in the northern Adriatic Sea. During periods of water stratification, we found higher virus abundances and virus/bacterium ratios (VBRs) as well as a larger variability of D-DNA ...

journal_title：Microbial ecology

authors： Weinbauer MG,Fuks D,Puskaric S,Peduzzi P

更新日期：1995-07-01 00:00:00

abstract：:The dynamics of carbon (C), nitrogen (N), and phosphorus (P), elemental ratios, and dark uptake/release of N and P in bacterial and phytoplankton size fractions were studied during summer 1992 in three lakes of contrasting food web structure and trophic status (L240, L110, L227). We wished to determine if phytoplankto...

journal_title：Microbial ecology

authors： Elser JJ,Chrzanowski TH,Sterner RW,Schampel JH,Foster DK

更新日期：1995-03-01 00:00:00

abstract：:The occurrence and distribution of Azorhizobium and Rhizobium strains that induce stem nodulation of Sesbania rostrata were determined in four vegetation zones in Senegal. Based on tests with 16 Rhizobium and 10 Azorhizobium strains nodulating S. rostrata, a method was devised to distinguish among the strains. In all ...

journal_title：Microbial ecology

authors： Robertson BK,Dreyfus B,Alexander M

更新日期：1995-01-01 00:00:00

abstract：:Although they are very unlikely to play large direct roles in water-column microbial loops, eukaryotic mycelial decomposers (the mycelial true fungi, eumycotes, and zoosporic "fungi," oomycotes) have the potential to be important secondary producers in decaying plant material in shallow aquatic systems. Their secondar...

journal_title：Microbial ecology

authors： Newell SY

更新日期：1994-09-01 00:00:00

abstract：:A variety of approaches including enumeration of visibly infected microbes, removal of viral particles, decay of viral infectivity, and measurements of viral production rates have been used to infer the impact of viruses on microbial mortality. The results are surprisingly consistent and suggest that, on average, abou...

journal_title：Microbial ecology

authors： Suttle CA

更新日期：1994-09-01 00:00:00

abstract：:Simulation modeling has been an integral, albeit ad hoc, component of the field of aquatic microbial ecology for the past two decades. One of the most critical steps in simulation modeling is the initial formulation of a clear set of questions and goals. It is doubtful that a single generic model could be constructed ...

journal_title：Microbial ecology

authors： Hopkinson CS Jr,Vallino JJ

更新日期：1994-09-01 00:00:00

abstract：:Thymidine and leucine incorporation into macromolecules of soil bacteria extracted by homogenization-centrifugation were measured after size-fractionation of the bacterial suspension through different sized filters (1.0, 0.8, 0.6, 0.4 μm). The specific thymidine incorporation rate was highest for the unfiltered and 1....

journal_title：Microbial ecology

authors： Bååth E

更新日期：1994-05-01 00:00:00

abstract：:A simple agar plating method for the description of microbial communities is described. This method is based on the quantification of the numbers of bacterial colonies in 6-7 age-based classes as they appear on agar media over a period of 6-10 days. The method can be used to quantify microbial communities in different...

journal_title：Microbial ecology

authors： De Leij FA,Whipps JM,Lynch JM

更新日期：1994-01-01 00:00:00

abstract：:To study the fate of Pseudomonas putida DSM 3931 in an aquatic environment, cultures of the strain were released into lake water mesocosms. P. putida, bearing the TOL-plasmid, was released as a representative xenobiotic-degrading microorganism. The release was carried out in mesocosms with unamended lake water and in ...

journal_title：Microbial ecology

authors： Brettar I,Ramos-Gonzalez MI,Ramos JL,Höfle MG

更新日期：1994-01-01 00:00:00

abstract：:Incorporation of [(14)C]leucine into proteins of bacteria was studied in a temperate mesohumic lake. The maximum incorporation of [(14)C] leucine was reached at a concentration of 30 nM determined in dilution cultures. Growth experiments were used to estimate factors for converting leucine incorporation to bacterial c...

journal_title：Microbial ecology

authors： Tulonen T

更新日期：1993-11-01 00:00:00

abstract：:The distribution of aerobic chemoheterotrophic microorganisms within a 21 m3 section of deep subsurface rock was determined. Nineteen samples for microbiological analysis were aseptically taken by hand from the walls of a 400 m deep subsurface tunnel after an alpine miner created fresh rock faces 0.76, 1.52, 2.28, and...

journal_title：Microbial ecology

authors： Haldeman DL,Amy PS,Ringelberg D,White DC

更新日期：1993-09-01 00:00:00

abstract：:A strain-specific immunofluorescence assay for enumeration of a marine denitrifying bacterium was developed and applied in the marine environment. The polyclonal antiserum for Pseudomonas stutzeri (ATCC 14405) did not react with other pseudomonads, other heterotrophs, or autotrophic nitrifying strains. The abundance o...

journal_title：Microbial ecology

authors： Ward BB,Cockcroft AR

更新日期：1993-05-01 00:00:00

abstract：:Thymidine incorporation into DNA is widely used to estimate rates of bacterial growth and secondary production in aquatic systems. The procedure requires the use of several conversion factors and assumptions to convert rates of thymidine uptake to rates of carbon production. Perhaps the most controversial of the conve...

journal_title：Microbial ecology

authors： Chrzanowski TH,Simek K,Sada RH,Williams S

更新日期：1993-03-01 00:00:00

abstract：:The marine, free-living Stilbonematinae (Nematoda: Desmodorida) inhabit the oxygen sulfide chemocline in marine sands. They are characterized by an association with ectosymbiotic bacteria. According to their ultrastructure the bacteria are Gram-negative and form morphologically uniform coats that cover the entire body...

journal_title：Microbial ecology

authors： Polz MF,Felbeck H,Novak R,Nebelsick M,Ott JA

更新日期：1992-11-01 00:00:00

abstract：:Scanning electron microscopy and fluorescence microscopy after scanning with DAPI indicated that the skin mucus of the cornetfish contained large numbers of bacteria, 4 × 10(8) per cm3. However, viable counts yielded only 2 × 104 per cm(3). Twelve bacterial strains were isolated directly from the mucus and another ten...

journal_title：Microbial ecology

authors： Bernadsky G,Rosenberg E

更新日期：1992-07-01 00:00:00

abstract：:Microcosms may potentially be used as tools for evaluating the fate and effects of genetically engineered microorganisms released into the environment. Extrapolation of data to the field, however, requires that the correspondence between microcosm and field is known. Microbial trophic interactions within the microbial...

journal_title：Microbial ecology

authors： Kroer N,Coffin RB

更新日期：1992-06-01 00:00:00

abstract：:A biflagellated protozoan was isolated from an acidic drainage stream located inside a disused pyrite mine. The stream contained copious amounts of "acid streamer" bacterial growths, and the flagellate was observed in situ apparently grazing the streamer bacteria. The protozoan was obligately acidophilic, growing betw...

journal_title：Microbial ecology

authors： McGinness S,Johnson DB

更新日期：1992-01-01 00:00:00

abstract：:Mesophilic heterotrophic, aerobic or facultatively anaerobic bacteria that grow on yeast tryptone glucose extract agar were isolated from the surface of olive leaves of 3 or 4 different ages in January, April, July, and October from 1984 to 1989. Unweighted average linkage cluster analysis on either the Jaccard coeffi...

journal_title：Microbial ecology

authors： Ercolani GL

更新日期：1991-12-01 00:00:00

abstract：:The 16S rDNA genes of an apparently pure culture of a psychrophilic and strict barophilic bacterium (WHB 46) were studied by PCR-mediated amplification and cloning into phage M13 mp18. Sequence analysis of five individual clones revealed the presence of two different 16S rDNA types. The homology value of 90% indicates...

journal_title：Microbial ecology

authors： Liesack W,Weyland H,Stackebrandt E

更新日期：1991-12-01 00:00:00

abstract：:Taxonomic and genetic diversities of microbial communities disturbed by chemical pollutants were lower than in undisturbed reference communities. The dominant populations within the disturbed communities had enhanced physiological tolerances and substrate utilization capabilities, indicating that generalized physiolog...

journal_title：Microbial ecology

authors： Atlas RM,Horowitz A,Krichevsky M,Bej AK

更新日期：1991-12-01 00:00:00

abstract：:Genetically engineeredErwinia carotovora persisted significantly longer in thermally perturbed microcosms (35 days) than in nonstressed microcosms (5 days). Decreased pressure of competitors and predators and increased nutrient availability were examined as the most probable reasons for greater vulnerability of pertur...

journal_title：Microbial ecology

authors： Scanferlato VS,Lacy GH,Cairns J Jr

更新日期：1990-12-01 00:00:00

abstract：:The anaerobic degradation ofp-cresol was studied with one sediment source under three reducing conditions-denitrifying, sulfidogenic, and methanogenic. Loss ofp-cresol (1 mM) in all the anaerobic systems took initially 3 to 4 weeks. In acclimated culturesp-cresol was degraded in less than a week.p-Cresol was completel...

journal_title：Microbial ecology

authors： Häggblom MM,Rivera MD,Bossert ID,Rogers JE,Young LY

更新日期：1990-12-01 00:00:00

abstract：:Culturable counts of antibiotic resistant, genetically engineeredPseudomonas fluorescens were determined on antibiotic-containing plate count agar during starvation in water. Prior to starvation, colony counts obtained on all media separated into two groups. The mean of the colony counts on plate count agar with or wi...

journal_title：Microbial ecology

authors： Genthner FJ,Upadhyay J,Campbell RP,Genthner BR

更新日期：1990-12-01 00:00:00

abstract：:The effect of carbon∶nitrogen∶phosphorus (C∶N∶P) ratio of organic substrates on the regeneration of ammonium and phosphate was investigated by growing natural assemblages of freshwater bacteria in mineral media supplemented with the simple organic C, N, and P sources (glucose, asparagine, and sodium glycerophosphate, ...

journal_title：Microbial ecology

authors： Tezuka Y

更新日期：1990-05-01 00:00:00

abstract：:The persistence and interaction between newly isolated strains ofPseudomonas aeruginosa and resident bacteriophages indigenous to a freshwater environment was monitored over 45 days in lake water microcosms. The interaction between susceptible and resistant bacteria with pure phage (UT1) particles or a mixed phage pop...

journal_title：Microbial ecology

authors： Ogunseitan OA,Sayler GS,Miller RV

更新日期：1990-03-01 00:00:00

abstract：:A population density-dependent copper (Cu) resistance mechanism in a gram-negative soil bacterium, strain TDCd1, was shown to be inducible and was accompanied by changes in the protein composition of the outer membrane of the cell envelope. Characteristically, following inoculation of TDCd1 into Cu-supplemented growth...

journal_title：Microbial ecology

authors： Duxbury T,McIntyre R

更新日期：1989-11-01 00:00:00

abstract：:The ability of strains of the genusRhodococcus to transform chlorinated phenolic compounds was studied. Noninduced cells of several strains ofRhodococcus, covering at least eight species, were found to attack mono-, di-, and trichlorophenols by hydroxylation at theortho position to chlorocatechols. 3-chlorophenol and ...

journal_title：Microbial ecology

authors： Häggblom MM,Janke D,Salkinoja-Salonen MS

更新日期：1989-09-01 00:00:00

abstract：:Fungal immigration dynamics and community development were followed over time on sets of surface-disinfested apple leaves in the field. Immigration was defined as the arrival of viable propagules on the leaf surface. In three separate experiments (May, June, July), total numbers of fungal immigrants, numbers of filame...

journal_title：Microbial ecology

authors： Kinkel LL,Andrews JH,Nordheim EV

更新日期：1989-07-01 00:00:00

abstract：:The hydrophobicity of six strains representing three species ofLactobacillus was measured using dextran-polyethylene glycol contact angle measurements. These ranged from 123.6° forLactobacillus casei douche to 26.2° forL. casei RC-17 under identical growth conditions. The results indicated that the nutritional environ...

journal_title：Microbial ecology

authors： Eisen A,Reid G

更新日期：1989-01-01 00:00:00

abstract：:Bacteria attached to rock and glass surfaces were studied in streams draining a whole-tree harvested watershed (WTH) and a nonharvested (CONTROL) watershed in the Hubbard Brook Experimental Forest, New Hampshire, U.S.A. Seasonal trends in numbers of cells/cm(2), mean cell volume, cell size-frequency distribution, and ...

journal_title：Microbial ecology

authors： Haack SK,Burton T,Ulrich K

更新日期：1988-09-01 00:00:00

abstract：:In this paper we present a method of isolation and morphological and physiological characterization of groundwater bacteria based on numerical taxonomy and cluster analysis, and using a miniaturized test system (microtiter plates). Bacteria were isolated randomly on P-agar, and each strain was characterized in regard ...

journal_title：Microbial ecology

authors： Kölbel-Boelke J,Tienken B,Nehrkorn A

更新日期：1988-07-01 00:00:00

abstract：:The bacterial flora in the intestinal tract of goldfish (Carassius auratus) was investigated at different stages of fish development. The floras of the diets and the water and sediment of a culture pond were also analyzed. The total counts in the intestine ranged from 2.2 × 10(6)-2.1 × 10(8) cells g(-1) wet weight.Aer...

journal_title：Microbial ecology

authors： Sugita H,Tsunohara M,Ohkoshi T,Deguchi Y

更新日期：1988-05-01 00:00:00