Dynamics in the bacterial community-level physiological profiles and hydrological characteristics of constructed wetland mesocosms during start-up

Weber, Kela P.; Legge, Raymond L.

doi:10.1016/j.ecoleng.2010.03.016

Cited by 70 publications

(30 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The observed biofilm is also a common feature of constructed wetlands (e.g. Weber and Legge 2011;Wu et al 2011;Faulwetter et al 2013), and the visible fungal growth, supported by the aerobic nature of the system, highlights that streptomycetes and fungi are integral parts of these systems (Fester 2013). Streptomycetes are known to be capable of degrading benzene (Thumar andSingh 2009) andFester (2013) reported fungal colonisation of wetlands by arbuscular mycorrhiza within a few years.…”

Section: Visualisation Of Active Microbial Biomassmentioning

confidence: 95%

Methods for visualising active microbial benzene degraders in in situ microcosms

Schurig

Mueller

Höschen

et al. 2014

Appl Microbiol Biotechnol

View full text Add to dashboard Cite

Natural attenuation maybe a cost-efficient option for bioremediation of contaminated sites but requires knowledge about the activity of degrading microbes under in situ conditions. In order to link microbial activity to the spatial distribution of contaminant degraders, we combined the recently improved in situ microcosm approach, so-called 'direct-push bacterial trap' (DP-BACTRAP), with nano-scale secondary ion mass spectrometry (NanoSIMS) analysis on samples from contaminated constructed wetlands. This approach is based on initially sterile microcosms amended with (13)C-labelled benzene as a source of carbon and energy for microorganisms. The microcosms were introduced directly in the constructed wetland, where they were colonised by indigenous microorganisms from the sediment. After incubation in the field, the samples were analysed by NanoSIMS, scanning electron microscopy (SEM) and fluorescence microscopy in order to visualise (13)C-labelled microbial biomass on undisturbed samples from the microcosms. With the approach developed, we successfully visualised benzene-degrading microbes on solid materials with high surface area by means of NanoSIMS. Moreover, we could demonstrate the feasibility of NanoSIMS analysis of unembedded porous media with a highly complex topography, which was frequently reasoned to not lead to sufficient results.

show abstract

Section: Visualisation Of Active Microbial Biomassmentioning

confidence: 95%

Methods for visualising active microbial benzene degraders in in situ microcosms

Schurig

Mueller

Höschen

et al. 2014

Appl Microbiol Biotechnol

View full text Add to dashboard Cite

show abstract

“…Microbial communities can be stabilized after 75-100 days during the start-up process of CW microcosms (Truu et al 2009;Weber and Legge 2011). The establishment of denitrifying bacteria populations within 75 days and ammonium-and nitrite-oxidizing bacteria within 95 days has been reported in reactors with sand filters (Pell and Nyberg 1989).…”

Section: Microbial Communitymentioning

confidence: 97%

“…Recent studies showed that microbial communities can be stabilized after a period of 75-100 days during the start-up process of CW microcosms. After 4 months, the bacterial community in the microcosms was believed to be stable (Truu et al 2009;Weber and Legge 2011).…”

Section: Site Description and Experimental Designmentioning

confidence: 98%

Microbial abundance and community in subsurface flow constructed wetland microcosms: role of plant presence

Wang

Xie

Ngo

et al. 2015

Environ Sci Pollut Res

View full text Add to dashboard Cite

In this research, the role of plants in improving microorganism growth conditions in subsurface flow constructed wetland (CW) microcosms was determined. In particular, microbial abundance and community were investigated during summer and winter in Phragmites australis-planted CW microcosms (PA) and unplanted CW microcosms (control, CT). Results revealed that the removal efficiencies of pollutants and microbial community structure varied in winter with variable microbial abundance. During summer, PA comprised more dominant phyla (e.g., Proteobacteria, Actinobacteria, and Bacteroidetes), whereas CT contained more Cyanobacteria and photosynthetic bacteria. During winter, the abundance of Proteobacteria was >40 % in PA but dramatically decreased in CT. Moreover, Cyanobacteria and photosynthetic bacterial dominance in CT decreased. In both seasons, bacteria were more abundant in root surfaces than in sand. Plant presence positively affected microbial abundance and community. The potential removal ability of CT, in which Cyanobacteria and photosynthetic bacteria were abundant during summer, was more significantly affected by temperature reduction than that of PA with plant presence.

show abstract

“…Stability of the bacterial community in CWs is reported to be reached after long-term operation (>75-700 days) (Weber and Legge, 2011;Samso and Garcia, 2013). Thus, the bacterial community was assumed to be stable in this study.…”

Section: Richness and Diversity Of Bacteria Phylotypesmentioning

confidence: 98%

Effects of plant biomass on bacterial community structure in constructed wetlands used for tertiary wastewater treatment

Chen

Wen

Tang

et al. 2015

Ecological Engineering

104

View full text Add to dashboard Cite

Dynamics in the bacterial community-level physiological profiles and hydrological characteristics of constructed wetland mesocosms during start-up

Cited by 70 publications

References 49 publications

Methods for visualising active microbial benzene degraders in in situ microcosms

Methods for visualising active microbial benzene degraders in in situ microcosms

Microbial abundance and community in subsurface flow constructed wetland microcosms: role of plant presence

Effects of plant biomass on bacterial community structure in constructed wetlands used for tertiary wastewater treatment

Contact Info

Product

Resources

About