Abstract：
:Potential rates of nitrification and denitrification were measured in an oligotrophic sediment system. Nitrification potential was estimated using the CO oxidation technique, and potential denitrification was measured by the acetylene blockage technique. The sediments demonstrated both nitrifying and denitrifying activity. Eh, O2, and organic C profiles showed two distinct types of sediment. One type was low in organic C, had high O2 and Eh, and had rates of denitrification 1,000 times lower than the other which had high organic C, low O2, and low Eh. Potential nitrification and denitrification rates were negatively correlated with Eh. This suggests that environmental heterogeneity in denitrifier and nitrifier populations in oligotrophic sediment systems may be assessed using Eh before sampling protocols for nitrification or denitrification rates are established. There was no correlation between denitrification and nitrification rates or between either of these processes and NH4 (+) or NO3 (-) concentrations. The maximum rate of denitrification was 0.969 nmole N cm(-3) hour(-1), and the maximum rate of nitrification was 23.6 nmole cm(-3) hour(-1), suggesting nitrification does not limit denitrification in these oligotrophic sediments. Some sediment cores had mean concentrations of 6.0 mg O2/liter and still showed both nitrification and denitrification activity.
journal_name
Microb Ecoljournal_title
Microbial ecologyauthors
Dodds WK,Jones RDdoi
10.1007/BF02011574subject
Has Abstractpub_date
1987-07-01 00:00:00pages
91-100issue
1eissn
0095-3628issn
1432-184Xjournal_volume
14pub_type
杂志文章abstract：:Prochlorococcus is the most abundant photosynthetic prokaryote on our planet. The extensive ecological literature on the Prochlorococcus collective (PC) is based on the assumption that it comprises one single genus comprising the species Prochlorococcus marinus, containing itself a collective of ecotypes. Ecologists a...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-020-01526-5
更新日期：2020-10-01 00:00:00
abstract：:While direct detrimental effects of parasites on hosts are relatively well documented, other more subtle but potentially important effects of parasitism are yet unexplored. Biological activity of ectoparasites, apart from skin injuries and blood-feeding, often results in blood remains, or parasite faeces that accumula...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-017-1140-6
更新日期：2018-08-01 00:00:00
abstract：:Microbiota presumably plays an essential role in inhibiting pathogen colonization and in the maintenance of health in oysters, but limited data exist concerning their different growth phases and conditions. We analyzed the bacterial microbiota composition of two commercial oysters: Crassostrea gigas and Crassostrea co...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-012-0039-5
更新日期：2012-08-01 00:00:00
abstract：:The plasticity of rhizobial genomes is far greater than previously thought, with complex genomic recombination events that may be accelerated by the often stressful environmental conditions of the tropics. This study aimed at evaluating changes in soybean rhizobia due to adaptation to inhospitable environmental condit...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-006-9149-2
更新日期：2007-02-01 00:00:00
abstract：:Aedes aegypti develop in aquatic habitats in which mosquito larvae are exposed to physicochemical elements and microorganisms that may influence their life cycle and their ability to transmit arboviruses. Little is known about the natural bacterial communities associated with A. aegypti or their relation to the biotic...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-020-01544-3
更新日期：2021-01-01 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：: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：:Since 2008, the kiwifruit industry has been devastated by a pandemic outbreak of Pseudomonas syringae pv. actinidiae (Psa), the causal agent of bacterial canker. This disease has become the most significant limiting factor in kiwifruit production. Psa colonizes different organs of the host plant, causing a specific sy...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-019-01459-8
更新日期：2020-07-01 00:00:00
abstract：:Fungal community structure and diversity in two types of agricultural grassland soil were investigated by amplified 18S ribosomal DNA restriction analysis (ARDRA) and 18S ribosomal DNA sequence analysis. These two grassland sites represent a species-rich old hay meadow and an agriculturally improved site with low flor...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-003-2018-3
更新日期：2004-05-01 00:00:00
abstract：:Extreme environments such as the Antarctic can lead to the discovery of new microbial taxa, as well as to new microbial-derived natural products. Considering that little is known yet about the diversity and the genetic resources present in these habitats, the main objective of this study was to evaluate the fungal com...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-018-1217-x
更新日期：2019-01-01 00:00:00
abstract：:In search for microbiological indicators of coral health and coral diseases, community profiles of coral-associated epizoic prokaryotes were investigated because of their dual potential as a source of coral pathogens and their antagonists. In pairwise samples of visually healthy and diseased coral specimens from Bolin...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-008-9400-0
更新日期：2009-01-01 00:00:00
abstract：:Actinobacteria are major producers of secondary metabolites; however, it is unclear how they are distributed in the environment. DNA was extracted from forest, pasture and cultivated soils, street sediments (dust and material in place), and sediments affected by animal activity (e.g. guano, vermicompost) and character...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-010-9752-0
更新日期：2011-02-01 00:00:00
abstract：:A new membrane filter technique for field use was developed for the enumeration of either aerobic or anaerobic, autotrophic, sulfur-oxidizing bacteria in waters and soils. Immediately after collection, samples were filtered through sulfur-coated filters and incubated in selective media. Acidification or gas evolution ...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02010741
更新日期：1977-12-01 00:00:00
abstract：:We examined the abundance of viruses on microorganisms in activated sludge and the dynamics of their community structure. Direct counting with epifluorescence microscopy and pulsed-field gel electrophoresis (PFGE) were applied to 20 samples from 14 full-scale wastewater treatment plants (wwtps) treating municipal, ind...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-006-9150-9
更新日期：2007-01-01 00:00:00
abstract：:Members of the ant tribe Camponotini have coevolved with Blochmannia, an obligate intracellular bacterial mutualist. This endosymbiont lives within host bacteriocyte cells that line the ant midgut, undergoes maternal transmission from host queens to offspring, and contributes to host nutrition via nitrogen recycling a...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-013-0264-6
更新日期：2013-10-01 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
pub_type： 杂志文章
doi：10.1007/BF02075807
更新日期：1989-11-01 00:00:00
abstract：:Aerobic methanotrophs present in wetlands can serve as a methane filter and thereby significantly reduce methane emissions. Sanjiang wetland is a major methane source and the second largest wetland in China, yet little is known about the characteristics of aerobic methanotrophs in this region. In the present study, we...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-014-0506-2
更新日期：2015-04-01 00:00:00
abstract：:Deep sequencing of prokaryotic 16S rDNA regularly reveals thousands of microbial species thriving in many common habitats. It is still unknown how this huge microbial diversity, including many potentially competing organisms, may persist at a single site. One of plausible hypotheses is that a large number of spatially...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-016-0760-6
更新日期：2016-07-01 00:00:00
abstract：:In Europe as in North America, elms are devastated by Dutch elm disease (DED), caused by the alien ascomycete Ophiostoma novo-ulmi. Pathogen dispersal and transmission are ensured by local species of bark beetles, which established a novel association with the fungus. Elm bark beetles also transport the Geosmithia fun...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-017-1062-3
更新日期：2018-04-01 00:00:00
abstract：:Understanding the rules that govern the successions of gut microbiota is prerequisite for testing general ecological theories and sustaining a desirable microbiota. However, the ignorance of microeukaryotes raises the question of whether gut microeukaryotes are assembled according to the same rules as bacteria. We tra...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-020-01533-6
更新日期：2020-11-01 00:00:00
abstract：:Alterations in microbial community composition, biomass, and function in the Florida Everglades impacted by cultural eutrophication reflect a new physicochemical environment associated with monotypic stands of Typha domingensis. Phospholipid fatty acid (PLFA) biomarkers were used to quantify microbial responses in det...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-012-0090-2
更新日期：2012-11-01 00:00:00
abstract：:We studied the response of the sulfate-reducing prokaryote (SRP) communities to the experimental variation of salinity and tide in an outdoor mesocosm setup. Intact soil monoliths were collected at two areas of the Haringvliet lagoon (The Netherlands): one sampling location consisted of agricultural grassland, drained...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-009-9614-9
更新日期：2010-01-01 00:00:00
abstract：:Many sponges host abundant and active microbial communities that may play a role in the uptake of dissolved organic matter (DOM) by the sponge holobiont, although the mechanism of DOM uptake and metabolism is uncertain. Bulk and compound-specific isotopic analysis of whole sponge, isolated sponge cells, and isolated s...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-019-01410-x
更新日期：2020-02-01 00:00:00
abstract：:Assimilatory nitrate reductase gene fragments were isolated from epiphytes and plankton associated with seagrass blades collected from Tampa Bay, Florida, USA. Nitrate reductase genes from diatoms (NR) and heterotrophic bacteria (nasA) were amplified by polymerase chain reaction (PCR) using two sets of degenerate prim...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-006-9175-0
更新日期：2007-11-01 00:00:00
abstract：:The abundance ofAeromonas hydrophila was measured monthly at 29 sites in Albemarle Sound, North Carolina and its tributaries from April 1977 through July 1979. Simultaneous measurements included heterotrophic plate count bacteria, fecal coliform bacteria, and 18 physical and chemical parameters. Using only 6 water qua...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02015127
更新日期：1983-07-01 00:00:00
abstract：:Alcohol production from corn is gaining importance in Ontario, Canada, and elsewhere. A major cost of corn production is the cost of chemical fertilizers and these continue to increase in price. The competitiveness of alcohol with fossil fuels depends on access to low-cost corn that allows growers to earn a sustainabl...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-006-9039-7
更新日期：2006-04-01 00:00:00
abstract：:Rhizoremediation has been suggested as an attractive bioremediation strategy for the effective breakdown of pollutants in soil. The presence of plant root exudates such as organic acids, sugars, and amino acids that may serve as carbon sources or biosynthetic building blocks and the limited bioavailability of iron may...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-002-2023-y
更新日期：2003-01-01 00:00:00
abstract：:Bacterial surface structures called pili have been studied extensively for their role as possible colonization factors. Most sequenced Vibrio genomes predict a variety of pili genes in these organisms, including several types of type IV pili. In particular, the mannose-sensitive hemagglutinin (MSHA) and the PilA pili,...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-012-0021-2
更新日期：2012-08-01 00:00:00
abstract：:Microbial communities within oxygen minimum zones (OMZs) are crucial drivers of marine biogeochemical cycles; however, we still lack an understanding of how these communities are distributed across an OMZ. We explored vertical (from 5 to 500 m depth) and horizontal (coast to open ocean) distribution of bacterioplankto...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-020-01508-7
更新日期：2020-10-01 00:00:00
abstract：:The quantitative uptake of latex beads of different sizes and of live cells by 14 species of ciliates was studied. The functional response (uptake rate as function of food particle concentration) can be fitted to a hyperbolic function and this can be explained in terms of the function of the mouth apparatus. Each spec...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02020370
更新日期：1980-03-01 00:00:00
