Abstract：
:Interactions between bacteria and protozoa in soil were studied over 2-week periods in the field and in a pot experiment. Under natural conditions the total biological activity was temporarily synchronized by a large rainfall, and in the laboratory by the addition of water to dried-out soil, with or without plants. In the field, peaks in numbers and biomass of bacteria appeared after the rain, and a peak of naked amoebae quickly followed. Of the three investigated groups-flagellates, ciliates, and amoebae-only populations of the latter were large enough and fluctuated in a way that indicated a role as bacterial regulators. The bacterial increase was transient, and the amoebae alone were calculated to be able to cause 60% of the bacterial decrease. The same development of bacteria and protozoa was observed in the pot experiment: in the presence of roots, amoebic numbers increased 20 times and became 5 times higher than in the unplanted soil. In the planted pots, the amoebic increase was large enough to cause the whole bacterial decrease observed; but in the unplanted soil, consumption by the amoebae caused only one-third of the bacterial decrease.
journal_name
Microb Ecoljournal_title
Microbial ecologyauthors
Clarholm Mdoi
10.1007/BF02341429subject
Has Abstractpub_date
1981-12-01 00:00:00pages
343-50issue
4eissn
0095-3628issn
1432-184Xjournal_volume
7pub_type
杂志文章abstract：:Crop residues are a crucial ecological niche with a major biological impact on agricultural ecosystems. In this study, we used a combined diachronic and synchronic field experiment based on wheat-oilseed rape rotations to test the hypothesis that plant is a structuring factor of microbial communities in crop residues,...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-019-01340-8
更新日期：2019-05-01 00:00:00
abstract：:Atmospheric pollution has become a major problem for modern societies owing to its fatal effects on both human health and ecosystems. We studied the relationships of nitrogen dioxide atmospheric pollution and metal trace elements contained in atmospheric particles which were accumulated in bryophytes to microbial comm...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-009-9580-2
更新日期：2010-02-01 00:00:00
abstract：:The capacity to study the content and resolve the dynamics of the proteome of diverse microbial communities would help to revolutionize the way microbiologists study the function and activity of microorganisms in soil. To better understand the limitations of a proteomic approach to studying soil microbial communities,...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-009-9593-x
更新日期：2010-02-01 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
pub_type： 杂志文章
doi：10.1007/BF02543873
更新日期：1990-12-01 00:00:00
abstract：:This study is aimed to assess the formation of photosynthetic biofilms on and within different natural stone materials, and to analyse their biogeophysical and biogeochemical deterioration potential. This was performed by means of artificial colonisation under laboratory conditions during 3 months. Monitoring of micro...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-010-9666-x
更新日期：2010-07-01 00:00:00
abstract：:A temporal temperature gradient gel electrophoresis (TTGE) method was developed to determine the diversity of methanogen populations in the rumen. Tests with amplicons from genomic DNA from 12 cultured methanogens showed single bands for all strains, with only two showing apparently comigrating bands. Fingerprints of ...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-006-9182-1
更新日期：2007-07-01 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
pub_type： 杂志文章
doi：10.1007/BF00167789
更新日期：1992-11-01 00:00:00
abstract：:> Abstract A new procedure to investigate the relationship between bacterial cell size and activity at the cellular level has been developed; it is based on the coupling of radioactive labeling of bacterial cells and cell sorting by flow cytometry after SYTO 13 staining. Before sorting, bacterial cells were incubated ...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s002489900160
更新日期：1999-08-01 00:00:00
abstract：:The composition of the soil microbiome is influenced by environmental (abiotic) variables and biological interactions (biotic factors). To determine whether the aboveground vegetation and soil physicochemical properties were the main determinant of beta-diversity and biological interaction of soil microbial community,...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-017-1050-7
更新日期：2018-02-01 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
pub_type： 杂志文章
doi：10.1007/BF02011695
更新日期：1989-07-01 00:00:00
abstract：:Bacteria and algae release exopolymeric substances (EPS) that perform a wide range of important functions in aquatic and terrestrial systems. In this study we measured EPS in sediments at nine littoral sites around a shallow oligotrophic basin, and tested whether the concentration and composition of EPS was related to...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-002-1064-6
更新日期：2003-07-01 00:00:00
abstract：:Bisphenol A (BPA) is a common ingredient in plastic wares and epoxy resins that are essential for our daily life. Despite the obvious benefits, BPA may act as an environmental endocrine disruptor, causing metabolic, reproductive, and/or developmental consequences and diseases in humans and other organisms. Although pr...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-018-1263-4
更新日期：2019-04-01 00:00:00
abstract：:Drying and rewetting is a frequent physiological stress for soil microbial communities; a stress that is predicted to grow more influential with future climate change. We investigated the effect of repeated drying-rewetting cycles on bacterial (leucine incorporation) and fungal (acetate in ergosterol incorporation) gr...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-010-9723-5
更新日期：2010-08-01 00:00:00
abstract：:Salt marshes are unique ecosystem of which a microbial community is expected to be affected by global climate change. In this study, by using T-RFLP analysis, quantitative PCR, and pyrosequencing, we comprehensively analyzed the microbial community structure responding to elevated CO2 (eCO2) and N addition in a salt m...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-017-0960-8
更新日期：2017-10-01 00:00:00
abstract：:Mediterranean forests own distinct characteristics resulting from climate, soil, and vegetation that affect soil microbial communities' assembly and their associated functions. We initiated a multi-scalar analysis of environmental drivers of soil functioning to (1) identify pertinent factorial scales and (2) determine...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-020-01518-5
更新日期：2020-10-01 00:00:00
abstract：:This study evaluated the effects of selected essential oils on archaeal communities using the ovine rumen model. Forty weaned Canadian Arcott ewes, fed with barley-based diet, were allotted to one of three essential oil supplementation treatments or a control (10 ewes per treatment) for 13 weeks. The treatments were c...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-007-9340-0
更新日期：2008-08-01 00:00:00
abstract：:Host-associated microbiota vary across host individuals and environmental conditions, but the relative importance of their genetic background versus their environment is difficult to disentangle. We sought to experimentally determine the factors shaping the microbiota of the planktonic Crustacean, Daphnia magna. We us...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-017-1126-4
更新日期：2018-08-01 00:00:00
abstract：:A growing body of evidence suggests that contaminated environments may harbor a greater proportion of antibiotic-resistant microorganisms than unpolluted reference sites. Here, we report the screening of 427 Escherichia coli strains isolated from 11 locations on nine streams draining the US Department of Energy's Sava...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-015-0678-4
更新日期：2016-11-01 00:00:00
abstract：:Energy redistribution between growth and maintenance in salt-stressed cells is especially important for bacteria living in estuarine environments. In this study, Gram-negative bacterium Vibrio sp. DSM14379, isolated from the estuarine waters of the northern Adriatic Sea, was grown aerobically in a peptone-yeast extrac...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-011-9870-3
更新日期：2011-07-01 00:00:00
abstract：:Most soil microbial community studies to date have focused on homogenized bulk soil samples. However, it is likely that many important microbial processes occur in spatially segregated microenvironments in the soil leading to a microscale biogeography. This study attempts to localize specific microbial populations to ...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-006-9020-5
更新日期：2006-04-01 00:00:00
abstract：:Generally, only a small fraction of free-living pelagic bacteria are metabolically active, while particle-associated bacteria usually exhibit a larger proportion of active bacteria. Most previous studies on the active fraction of bacteria focus on planktonic communities, and there are only a few studies on sediment an...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-002-2005-0
更新日期：2002-03-01 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
pub_type： 杂志文章
doi：10.1007/BF00170105
更新日期：1996-07-01 00:00:00
abstract：:Bacterioplankton community composition was studied in 12 lakes in three different geographic regions in Scandinavia using denaturing gradient gel electrophoresis (DGGE) and sequencing of 16S rDNA. Area-specific abundant taxa were found in the lakes in two of the regions. In the region of Uppland the lakes had an alpha...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-002-0007-6
更新日期：2002-07-01 00:00:00
abstract：:Biofilms, microbial mats, and microbialites dwell under highly limiting conditions (high salinity, extreme aridity, pH, and elevated arsenic concentration) in the Andean Puna. Only recent pioneering studies have described the microbial diversity of different Altiplano lakes and revealed their unexpectedly diverse micr...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-018-1159-3
更新日期：2018-10-01 00:00:00
abstract：:Composition and distribution of planktonic protists were examined relative to microbial food web dynamics (growth, grazing, and nitrogen cycling rates) at the Old Woman Creek (OWC) National Estuarine Research Reserve during an episodic storm event in July 2003. More than 150 protistan taxa were identified based on mor...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-004-0250-0
更新日期：2004-11-01 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
pub_type： 杂志文章
doi：10.1007/BF02097402
更新日期：1988-07-01 00:00:00
abstract：:Fungi play an important role in cycling organic matter and nutrients in marine ecosystems. However, the distribution of fungal communities in the ocean, especially the vertical distribution along depth in the water column, remained poorly understood. Here, we assess the depth-related distribution pattern of fungal com...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-019-01374-y
更新日期：2019-11-01 00:00:00
abstract：:Pseudomonas fluorescens strains are used in agriculture as plant growth-promoting rhizobacteria (PGPR). Nontarget effects of released organisms should be analyzed prior to their large-scale use, and methods should be available to sensitively detect possible changes in the environments the organism is released to. Acco...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-009-9489-9
更新日期：2009-05-01 00:00:00
abstract：:To date, the knowledge of eukaryotic communities associated with sponges remains limited compared with prokaryotic communities. In a manner similar to prokaryotes, it could be hypothesized that sponge holobionts have phylogenetically diverse eukaryotic symbionts, and the eukaryotic community structures in different sp...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-014-0393-6
更新日期：2014-05-01 00:00:00
abstract：:Animal manure from modern animal agriculture constitutes the single largest source of antibiotic resistance (AR) owing to the use of large quantities of antibiotics. After animal manure enters the environment, the AR disseminates into the environment and can pose a potentially serious threat to the health and well-bei...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-010-9634-5
更新日期：2010-10-01 00:00:00
