A shallow constructed wetland combining porous filter material and Rotala rotundifolia for advanced treatment of municipal sewage at low HRT

Xiao, Jibo; Guo, Lin; Cao, Zhuangzhuang; Chu, Shuyi; Cui, Lingzhou; Yang, Yang; Wu, X.

doi:10.1007/s11356-022-24111-4

Cited by 2 publications

(1 citation statement)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other authors indicated that after a forest fire, it is common to find an enrichment of copiotroph bacteria in the soil in the short term (1 yaf) [11,12] and the intermediate term (3 yaf) [15]. Members belonging to the three above-mentioned genera have been described as having this lifestyle [15,51,52]. Nevertheless, in a longer term, 5 yaf, this quality does not seem to be a determining factor in the community profile [16].…”

Section: Discussionmentioning

confidence: 99%

Long-Term Persistence of Three Microbial Wildfire Biomarkers in Forest Soils

Fernández-González

Lasa

Cobo‐Díaz

et al. 2023

Forests

View full text Add to dashboard Cite

Long-term monitoring of microbial communities in the rhizosphere of post-fire forests is currently one of the key knowledge gaps. Knowing the time scale of the effects is indispensable to aiding post-fire recovery in vulnerable woodlands, including holm oak forests, that are subjected to a Mediterranean climate, as is the case with forests that are found in protected areas such as the Sierra Nevada National and Natural Park in southeastern Spain. We took rhizosphere soil samples from burned and unburned holm oak trees approximately 3, 6, and 9 years after the 2005 fire that devastated almost 3500 ha in southeastern Spain. We observed that the prokaryotic communities are recovering but have not yet reached the conditions observed in the unburned forest. A common denominator between this fire and other fires is the long-term persistence of three ecosystem recovery biomarkers—specifically, higher proportions of the genera Arthrobacter, Blastococcus, and Massilia in soil microbial communities after a forest fire. These pyrophilous microbes possess remarkable resilience against adverse conditions, exhibiting traits such as xerotolerance, nitrogen mineralization, degradation of aromatic compounds, and copiotrophy in favorable conditions. Furthermore, these biomarkers thrive in alkaline environments, which persist over the long term following forest fires. The relative abundance of these biomarkers showed a decreasing trend over time, but they were still far from the values of the control condition. In conclusion, a decade does not seem to be enough for the complete recovery of the prokaryotic communities in this Mediterranean ecosystem.

show abstract

Section: Discussionmentioning

confidence: 99%

Long-Term Persistence of Three Microbial Wildfire Biomarkers in Forest Soils

Fernández-González

Lasa

Cobo‐Díaz

et al. 2023

Forests

View full text Add to dashboard Cite

show abstract

Nitrogen removal and microbial community variation in a shallow constructed wetland with Fe–C porous filter material as substrate

Chu,

Cao,

et al. 2024

CLEAN Soil Air Water

View full text Add to dashboard Cite

This study aims to examine the nitrogen removal characteristics and microbial community variation at low hydraulic retention time (HRT) in a shallow constructed wetland (SCW) using iron–carbon (Fe–C) porous filter material (PFM) as substrate. Effects of influent nitrogen forms and chemical oxygen demand (COD)/N ratio on nitrogen removal performance at HRT of 1 day were investigated. Results showed that total nitrogen (TN) removal declined with the decrease of influent NH4+‐N‐to‐NO3−‐N ratio. When the influent NH4+‐N/NO3−‐N ratio was 0.1, TN removal decreased by 15.4% compared with that at ratio of 2.0. The increase of influent COD/N ratio enhanced NO3−‐N reduction, and TN removal reached 74.5% at influent COD/N ratio 7.0. The microbial community was analyzed for the biofilm samples on Fe–C PFM at front (WF), middle (WM), and back (WB) of SCW. Proteobacteria, Bacteroidetes, Chloroflexi, and Firmicutes were dominant bacteria phyla. The relative abundance of genera involved in the nitrification and denitrification decreased with the influent flow. The iron autotrophic denitrifying and macromolecular organics degrading bacteria were abundant in the middle and back of SCW. Microbial nitrification and denitrification, plant uptake, and plant synergism contributed to 86.3%, 7.41%, and 19.9% of N removal, respectively. These results demonstrated that the SCW with Fe–C PFM as substrate was efficient in nitrogen removal at low HRT.

show abstract

A shallow constructed wetland combining porous filter material and Rotala rotundifolia for advanced treatment of municipal sewage at low HRT

Cited by 2 publications

References 49 publications

Long-Term Persistence of Three Microbial Wildfire Biomarkers in Forest Soils

Long-Term Persistence of Three Microbial Wildfire Biomarkers in Forest Soils

Nitrogen removal and microbial community variation in a shallow constructed wetland with Fe–C porous filter material as substrate

Contact Info

Product

Resources

About