Abstract：
:Aquatic ecosystems worldwide have been substantially altered by human activities, which often induce changes in multiple factors that can interact to produce complex effects. Here, we evaluated the combined effects of dissolved nutrients (nitrogen [N] and phosphorus [P]; three levels: concentration found in oligotrophic streams in the Cerrado biome, 10× and 100× enriched) and oxygen (O2; three levels: hypoxic [4% O2], depleted [55% O2], and saturated [96% O2]) on plant litter decomposition and associated fungal decomposers in laboratory microcosms simulating stream conditions under distinct scenarios of water quality deterioration. Senescent leaves of Maprounea guianensis were incubated for 10 days in an oligotrophic Cerrado stream to allow microbial colonization and subsequently incubated in microcosms for 21 days. Leaves lost 1.1-3.0% of their initial mass after 21 days, and this was not affected either by nutrients or oxygen levels. When considering simultaneous changes in nutrients and oxygen concentrations, simulating increased human pressure, fungal biomass accumulation, and sporulation rates were generally inhibited. Aquatic hyphomycete community structure was also affected by changes in nutrients and oxygen availability, with stronger effects found in hypoxic treatments than in depleted or saturated oxygen treatments. This study showed that the effects of simultaneous changes in the availability of dissolved nutrients and oxygen in aquatic environments can influence the activity and composition of fungal communities, although these effects were not translated into changes in litter decomposition rates.
journal_name
Microb Ecoljournal_title
Microbial ecologyauthors
Gomes PP,Ferreira V,Tonin AM,Medeiros AO,Júnior JFGdoi
10.1007/s00248-017-1099-3subject
Has Abstractpub_date
2018-05-01 00:00:00pages
854-862issue
4eissn
0095-3628issn
1432-184Xpii
10.1007/s00248-017-1099-3journal_volume
75pub_type
杂志文章abstract：:Abstract Interactions between natural bacterial assemblages and dissolved organic carbon (DOC) were investigated in two complementary batch experiments. In the first, a positive relationship was found between the proportion of electron transport system (ETS) active bacteria and the diversity of DOC in microcosms enric...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/pl00021036
更新日期：1999-10-01 00:00:00
abstract：:Knowledge of the distribution of Paenibacillus larvae spores, the causative agent of American foulbrood (AFB), among individual adult honey bees is crucial for determining the appropriate number of adult bees to include in apiary composite samples when screening for diseased colonies. To study spore distribution at th...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-007-9342-y
更新日期：2008-08-01 00:00:00
abstract：:Two areas of Chesapeake Bay, Colgate Creek in Baltimore Harbor and Eastern Bay, are presently under study, with routine sampling of water and sediment for petroleum-degrading microorganisms (bacteria, yeasts, and fungi) by direct plating and enrichment culture. Selected physical and chemical parameters are recorded fo...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02512380
更新日期：1974-12-01 00:00:00
abstract：:Qualitative and quantitative investigations were made on the luminous bacteria associated with the gut of pond cultured milk fishChanos chanos. Significant differences in luminous bacterial numbers were found between gut and pond water and between gut and pond sediment, but not between pond water and sediment. No sign...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02011207
更新日期：1986-06-01 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：:Electron transport system (ETS) activity was measured in amended and nonamended soil by measuring the reduction of 2-(p-iodophenyl)-3-(p-nitrophenyl)-5-phenyl tetrazolium chloride (INT) to iodonitrotetrazolium formazan (INT-formazan), which can be easily extracted with methanol without interference from other compound...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02010449
更新日期：1982-10-01 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：:TwoNostoc muscorum cyanophages were isolated from a domestic sewage in Kuwait. N-1L cyanophage had a hexagonal head with a long tail, while N-2S cyanophage was a short-tailed virus. N-1L cyanophage was active at 50°C and at acidic pH, compared with N-2S, which was more heat stable and active at pH 7.0. Seasonal variat...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02025002
更新日期：1987-05-01 00:00:00
abstract：:Adenosine triphosphate in soil is measured by the luciferin-luciferase bioluminescence method. Cation exchange in the ATP extraction procedure is used to reduce the content of, e.g., Fe, Al, and Cations in extracts. The efficiency of the cation exchange is determined by measuring the concentration of Fe by X-ray fluor...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02010504
更新日期：1979-06-01 00:00:00
abstract：:Methanotrophic bacteria are able to use methane (CH4) as a sole carbon and energy source. Photochemical oxidation of methane takes place in the stratosphere, whereas in the troposphere, this process is carried out by methanotrophic bacteria. On the one hand, it is known that the efficiency of biological CH4 oxidation ...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-018-1248-3
更新日期：2019-04-01 00:00:00
abstract：:Persistence of recombinant and wild-type nucleopolyhedroviruses (NPV) was compared in field and laboratory microcosm experiments. Horizontal and vertical distribution of the viruses also was monitored in the field agricultural soil. Mixed populations of the bollworm, Helicoverpa zea, and tobacco budworm, Heliothis vir...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s002480000088
更新日期：2001-04-01 00:00:00
abstract：:Arkashin Schurf (Arkashin) and Zavarzin Spring (Zavarzin), two active thermal pools in the Uzon Caldera, Kamchatka, Russia, were studied for geochemical and microbiological characterization. Arkashin, the smaller of the two pools, had broader temperature and pH ranges, and the sediments had higher concentrations of to...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-011-9979-4
更新日期：2012-04-01 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
pub_type： 杂志文章
doi：10.1007/BF02018912
更新日期：1988-09-01 00:00:00
abstract：:A BSTRACTInterspecific fungal interactions are important ecological processes, whereas their physiological mechanisms are little understood. The aim of this work was to study how activity of fungal extracellular laccase was changed across mycelia during interactions between white- and brown-rot basidiomycetes from dif...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s002480000022
更新日期：2000-04-01 00:00:00
abstract：:Soil microorganisms are sensitive to environmental perturbations such that changes in microbial community structure and function can provide early signs of anthropogenic disturbances and even predict restoration success. We evaluated the bacterial functional diversity of un-mined and three chronosequence sites at vari...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-009-9621-x
更新日期：2010-05-01 00:00:00
abstract：:Phyllosphere bacteria on ornamental plants were characterized based on their diversity and activity towards the removal of polycyclic aromatic hydrocarbons (PAHs), the major air pollutants in urban area. The amounts of PAH-degrading bacteria were about 1-10% of the total heterotrophic phyllosphere populations and cons...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-009-9631-8
更新日期：2010-02-01 00:00:00
abstract：:The diversity and the community structure of sulfate-reducing bacteria (SRB) in an anaerobic continuous bioreactor used for treatment of a sulfate-containing wastewater were investigated by fluorescence in situ hybridization. Hybridization to the 16S rRNA probe EUB338 for the domain Bacteria was performed, followed by...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-006-9009-0
更新日期：2007-01-01 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：:Francisella tularensis is associated with water and waterways and infects many species of animals, insects, and protists. The mechanism Francisella utilizes to persist in the environment and in tick vectors is currently unknown. We have demonstrated for the first time that Francisella novicida, a model organism of F. ...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-009-9586-9
更新日期：2010-04-01 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：:Marine sponges often harbor photosynthetic symbionts that may enhance host metabolism and ecological success, yet little is known about the factors that structure the diversity, specificity, and nature of these relationships. Here, we characterized the cyanobacterial symbionts in two congeneric and sympatric host spon...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-012-0047-5
更新日期：2012-10-01 00:00:00
abstract：:Facultative methylotrophic bacteria of the genus Methylobacterium are consistently found in association with plants, particularly in the phyllosphere. To gain a better understanding of the mechanisms underlying the dispersal and occurrence of Methylobacterium on plants, diverse strains were isolated, identified, and s...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-010-9725-3
更新日期：2010-08-01 00:00:00
abstract：:The hypolithic microbial community associated with quartz pavement at a high-altitude tundra location in central Tibet is described. A small-scale ecological survey indicated that 36% of quartz rocks were colonized. Community profiling using terminal restriction fragment length polymorphism revealed no significant dif...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-010-9653-2
更新日期：2010-11-01 00:00:00
abstract：:The MHV-68 (designed as Murid herpesvirus 4 (MuHV 4) strain 68) isolated from two rodents, Myodes glareolus and Apodemus flavicollis, is considered as a natural pathogen of free-living murid rodents. Recently, the detection of MHV antibodies in the blood of animals living in the same biotope as MHV-infected mice has s...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-011-9907-7
更新日期：2011-11-01 00:00:00
abstract：:Muscodor spp. are proficient producers of bioactive volatile organic compounds (VOCs) with many potential applications. However, all members of this genus produce varying amounts and types of VOCs which suggests the involvement of epigenetics as a possible explanation. The members of this genus are poorly explored for...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-016-0901-y
更新日期：2017-05-01 00:00:00
abstract：:Selective nucleic acid intercalating dyes--ethidium monoazide (EMA) and propidium monoazide (PMA)--represent one of the most successful recent approaches to detect viable cells (as defined by an intact cell membrane) by PCR and have been effectively evaluated in different microorganisms. However, some practical limita...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-010-9719-1
更新日期：2011-01-01 00:00:00
abstract：:Montmorillonitic clay influences the biological control ofEscherichia coli in aquatic systems, the magnitude of the effects being dependent on the state of the clay and the type of host-antagonist interaction. The interaction ofBdellovibrio andE. coli was partially inhibited by the presence of montmorillonite. Because...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02013272
更新日期：1977-12-01 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：: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：:The lower respiratory tract has been previously considered sterile in a healthy state, but advances in culture-independent techniques for microbial identification and characterization have revealed that the lung harbors a diverse microbiome. Although research on the lung microbiome is increasing and important question...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-017-1068-x
更新日期：2018-02-01 00:00:00
