Factors affecting competition between type I and type II methanotrophs in two-organism, continuous-flow reactors [0.03%]
影响连续流动反应器中I型和II型甲烷氧化菌竞争的因素
D W Graham,J A Chaudhary,R S Hanson et al.
D W Graham et al.
Competition experiments were performed in a continuous-flow reactor using Methylosinus trichosporium OB3b, a type II methanotroph, and Methylomonas albus BG8, a type I methanotroph. The experiments were designed to establish conditions unde...
Efficacy in aquatic microcosms of a genetically engineered pseudomonad applicable for bioremediation [0.03%]
适于生物修复的基因工程假单胞菌在水生微型生态系统中的有效性研究
H Heuer,D F Dwyer,K N Timmis et al.
H Heuer et al.
A genetically engineered microorganism (GEM), Pseudomonas sp. B13 FRI (pFRC20P) (abbreviated FR120), has previously been engineered to simultaneously mineralize mixtures of methylated and chlorinated benzoic acids and phenols through a modi...
Validation of microbial community structure and ecological functional parameters in an aquatic microcosm designed for testing genetically engineered microorganisms [0.03%]
用于测试基因工程微生物的水生微宇宙中微生物群落结构和生态功能参数的有效性验证
T D Leser
T D Leser
Microcosms were designed to facilitate studies of the fate, functioning, and ecological effects of microorganisms released into the aquatic environment. The microcosms were three-phase systems (sediment/water/air) with three compartments (a...
Organic sedimentation and macrofauna as forcing factors in marine benthic nanofagellate communities [0.03%]
有机沉积物和大型底栖生物对海洋原生动物类纤毛纲的影响作用
R P Bak,F C van Duyl,G Nieuwland
R P Bak
We investigated how benthic nanoflagellate communities in marine sediments respond to sedimentation of organic material and to the presence of macrofaunal organisms in controlled boxcosms. An input of 24 g C m(-2) resulted in a sharp increa...
Benthic microbial production of oxygen supersaturates the bottom water of a stratified hypersaline lake [0.03%]
高盐分层湖泊底栖微生物产氧使底部水体过饱和氧化 councill湖冬季.bottomwateroxygenenrichedbybenthicmicrobialproductioninawinterstratifiedhypersalinelakec councilllake
C M Burke
C M Burke
Lake Hayward is a hypersaline lake that stratifies seasonally and maintains oxygen supersaturation in its bottom water for about 6 months each year. This phenomenon was found to be the result of photosynthesis by the benthic microbial commu...
Elemental ratios and the uptake and release of nutrients by phytoplankton and bacteria in three lakes of the Canadian shield [0.03%]
三个加美Shield湖泊中浮游植物和细菌对营养物质的吸收和释放及元素比率的研究
J J Elser,T H Chrzanowski,R W Sterner et al.
J J Elser et al.
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 structur...
The role of bacteria in the nutrient exchange between sediment and water in a flow-through system [0.03%]
流动系统中细菌在底泥和水体营养盐交换中的作用
T Kairesalo,L Tuominen,H Hartikainen et al.
T Kairesalo et al.
The contribution of bacteria to phosphorus (P) and nitrogen (N ) release from, or retention in, sediment was studied in a flow-through system. "Live" and formaldehyde-"killed" sediment communities were incubated in 25-liter bottles with a c...
Measurement of the incorporation rates of four amino acids into proteins for estimating bacterial production [0.03%]
利用蛋白质中四种氨基酸的掺入速率估算细菌产量
P Servais
P Servais
In aquatic ecosystems, [(3)H]thymidine incorporation into bacterial DNA and [(3)H]leucine incorporation into proteins are usually used to estimate bacterial production. The incorporation rates of four amino acids (leucine, tyrosine, lysine,...
Azospirillum strains use phenolic compounds as intermediates for electron transfer under oxygen-limiting conditions [0.03%]
亚氧条件下Azospirillum菌株利用酚类化合物作为电子传递中间体
A Barkovskii,M L Bouillant,L J Monrozier et al.
A Barkovskii et al.
The effects of catechol, vanillic, caffeic (CAF), 2-hydroxyphenylacetic, 4-hydroxy- and 3,4-dihydroxybenzoic (3,4-DHBA) acids on the growth of a common rice rhizosphere inhabitant, Azospirillum lipoferum were studied. Two strains of this no...
Role of autotrophic nitrifiers in biological manganese removal from groundwater containing manganese and ammonium [0.03%]
自养硝化细菌在地下水中锰和铵共存时生物除锰中的作用研究
J Vandenabeele,M Vande Woestyne,F Houwen et al.
J Vandenabeele et al.
Upon start-up of a rapid sand filter fed with groundwater containing Mn(2+) and NH(4+), the first to be removed was NH(4+), which was oxidized to NO2 (-). After both NH(4+) and NO2 (-). were completely oxidized to NO3 (-), the removal of Mn...