Results 261 to 270 of about 402,482 (299)

Soil and plant effects on microbial community structure

Canadian Journal of Microbiology, 2002
We investigated the effects of two different plant species (corn and soybean) and three different soil types on microbial community structure in the rhizosphere. Our working hypothesis was that the rhizosphere effect would be strongest on fast-growing aerobic heterotrophs, while there would be little or no rhizosphere effect on oligotrophic and other ...
Jeffrey S, Buyer, Daniel P, Roberts, Estelle, Russek-Cohen   +2 more
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Oxygen and the Spatial Structure of Microbial Communities

Biological Reviews, 2008
AbstractOxygen has two faces. On one side it is the terminal electron acceptor of aerobic respiration – the most efficient engine of energy metabolism. On the other hand, oxygen is toxic because the reduction of molecular O2creates reactive oxygen species such as the superoxide anion, peroxide, and the hydroxyl radical.
Fenchel, Tom, Finlay, Bland
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Microbial community structure in polluted Baltic Sea sediments

Environmental Microbiology, 2005
Summary Nearly half the seabed of the Baltic Proper is incapable of supporting life of higher organisms as a consequence of oxygen depletion resulting from eutrophication. However, these areas are actually teeming with microbial life.
Anna, Edlund, Terence, Soule, Sara, Sjöling, Janet K, Jansson   +3 more
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Microbial community structure and trichloroethylene degradation in groundwater

Canadian Journal of Microbiology, 2005
Trichloroethylene (TCE) is a prevalent contaminant of groundwater that can be cometabolically degraded by indigenous microbes. Groundwater contaminated with TCE from a US Department of Energy site in Ohio was used to characterize the site-specific impact of phenol on the indigenous bacterial community for use as a possible remedial strategy ...
J A, Humphries, A M H, Ashe, J A, Smiley, C G, Johnston   +3 more
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Correlation between microbial community structure and biofouling as determined by analysis of microbial community dynamics

Bioresource Technology, 2015
Three lab-scale membrane bioreactors (MBRs) were continuously operated to treat saline wastewater under 0%, 0.75% and 1.5% NaCl stress. 0.75% and 1.5% NaCl reduced the COD and NH4(+)-N removal at the beginning, while the removal efficiencies could be recovered along with the operation of MBRs.
Xuechao, Guo, Yu, Miao, Bing, Wu, Lin, Ye, Haiyan, Yu, Su, Liu, Xu-Xiang, Zhang   +6 more
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Plant community richness and microbial interactions structure bacterial communities in soil

Ecology, 2015
Plant species, plant community diversity and microbial interactions can significantly impact soil microbial communities, yet there are few data on the interactive effects of plant species and plant community diversity on soil bacterial communities. We hypothesized that plant species and plant community diversity affect soil bacterial communities by ...
Daniel C, Schlatter, Matthew G, Bakker, James M, Bradeen, Linda L, Kinkel   +3 more
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Microbial Diversity and Community Structure in Two Different Agricultural Soil Communities

Microbial Ecology, 1998
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.
, Øvreås, , Torsvik
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Tree influence on soil microbial community structure

Soil Biology and Biochemistry, 2010
Abstract Biological communities differ over time and in space, and in the forest these communities often vary according to trees and tree gaps, mediated by mechanisms that are likely to change over time and as a tree are removed. In this paper we ask the questions: What is the influence of individual trees on soil microbial community structure?
Lisbet Holm Bach, John-Arvid Grytnes, Rune Halvorsen, Mikael Ohlson   +3 more
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Microbial community structure and global trace gases

Global Change Biology, 1998
AbstractGlobal change can affect soil processes by either altering the functioning of existing organisms or by restructuring the community, modifying the fundamental physiologies that drive biogeochemical processes. Thus, not only might process rates change, but the controls over them might also change.
JOSHUA P. SCHIMEL, JAY. GULLEDGE
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Niche dimensionality drives microbial community structure

Niche dimensionality links environmental complexity to ecosystem structure. Although niche theory is often invoked in investigations of microbiomes, most models assume very high-dimensional coexistence, effectively sidestepping the role of dimensionality.
Karthik Srinivasan, German Plata, Purushottam D. Dixit   +2 more
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