Effects of plant diversity on microbial biomass and community metabolic profiles in a full-scale constructed wetland

Zhang, Chong‐Bang; Wang, Jiang; Liu, Wenli; Zhu, Shuijin; Ge, Han-Liang; Chang, Scott X.; Chang, Jie; Ge, Ying-En

doi:10.1016/j.ecoleng.2009.09.010

Cited by 156 publications

(60 citation statements)

References 44 publications

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“…In the diagram, Gram + for Gram-positive bacteria abundance, Gram − for Gram-negative bacteria abundance, Anaerobic for anaerobic bacteria abundance; DHA for dehydrogenase, Ure for urease, Nitr for nitrate reductase, Pho for phosphatase pollutants in the constructed wetlands (Ahn et al 2007;Krasnits et al 2009). Microbial community structure has been proposed to be an important determinant of water quality improvement in the wetland systems (Calheiros et al 2009;Faulwetter et al 2009), and temperature (Smith et al 2010), hydrologic regime and pollutant treatments (Mentzer et al 2006;Steenwerth et al 2006), plant diversity and function group richness (Zhang et al 2010 and biotic succession (Kent et al 2007), could strongly influence the microbial community structure. In the present study, the effects of microbial community structure (four diagnostic fatty acid (FA) groups) and environmental parameters on pollutant removal efficiencies were also determined by RDA (Fig.…”

Section: Relationships Between Microbial Community Structures and Funmentioning

confidence: 99%

Treatment performance and microorganism community structure of integrated vertical-flow constructed wetland plots for domestic wastewater

Chang

Dai

et al. 2012

Environ Sci Pollut Res

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In order to investigate the treatment performance and microorganism mechanism of IVCW for domestic wastewater in central of China, two parallel pilot-scale IVCW systems were built to evaluate purification efficiencies, microbial community structure and enzyme activities. The results showed that mean removal efficiencies were 81.03 % for COD, 51.66 % for total nitrogen (TN), 42.50 % for NH 4 + -N, and 68.01 % for TP. Significant positive correlations between nitrate reductase activities and TN and NH 4 + -N removal efficiencies, along with a significant correlation between substrate enzyme activity and operation time, were observed. Redundancy analysis demonstrated gram-negative bacteria were mainly responsible for urease and phosphatase activities, and also played a major role in dehydrogenase and nitrate reductase activities. Meanwhile, anaerobic bacteria, gram-negative bacteria, and saturated FA groups, gram-positive bacteria exhibited good correlations with the removal of COD (p00.388), N (p0 0.236), and TP (p00.074), respectively. The IVCW system can be used to treat domestic wastewater effectively.

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Section: Relationships Between Microbial Community Structures and Funmentioning

confidence: 99%

Treatment performance and microorganism community structure of integrated vertical-flow constructed wetland plots for domestic wastewater

Chang

Dai

et al. 2012

Environ Sci Pollut Res

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“…Substrate ammonium concentrations decreased with the increase of SR in 2008 in this study, maybe as a result of increased microbial community diversity and microbial biomass carbon and N and enzyme activities in the substrate with higher SR enhanced nitrification [18,26]. Meanwhile, the slope of the positive regression between substrate nitrate concentration and SR became steeper in 2008 as compared with that in 2007 (Fig.…”

Section: Effects Of Species Richness On Substrate Inorganic N Concentmentioning

confidence: 50%

“…The field experiment was located at the CW (1000 m 2 , 29853 0 N, 122823 0 E) in Zhoushan City and the CW's structure was described in Zhang et al [18] and Zhu et al [16]. Each plant species had a uniform mesophytic growth habitat in the down-flow chambers (i.e., A pond, Fig.…”

Section: Site Descriptionmentioning

confidence: 99%

“…However, substrate nitrate concentration was positively correlated with SR under high N input in this study. This may be due to (1) plant SR had positive effects on microbial biomass carbon and N in the rhizosphere [18], for the diverse roots could increase the release of exudates [27], the availability of oxygen in the substrate and microbial activities and nutrient cycling in the CW [23,28], (2) higher root production in communities with higher plant SR would increase nitrate accumulation through filtering functions [2], and (3) substrate nitrate concentration did not decrease though plant N uptake due to continuous N input from the CW. Therefore, plant communities with higher SR had higher nitrate concentrations in the substrate.…”

Section: Effects Of Species Richness On Substrate Inorganic N Concentmentioning

confidence: 99%

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Plant Species Richness Affected Nitrogen Retention and Ecosystem Productivity in a Full‐Scale Constructed Wetland

Zhu

Zhang

Wang

et al. 2012

CLEAN Soil Air Water

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The effects of plant species richness (SR; i.e., 1, 2, 4, 8, and 16 species per plot) on substrate nitrate and ammonium retention and ecosystem productivity in a full-scale constructed wetland (CW) with high nitrogen (N) input were studied. Substrate nitrate (0.1-16.4 mg kg À1 ) and ammonium concentrations (1.3-9.2 mg kg À1 ) in this study were higher than those in other comparable biodiversity experiments. Substrate nitrate concentration significantly increased while ammonium concentration significantly decreased with the increase of plant SR (p ¼ 0.008 and 0.040, respectively). The response of ecosystem productivity to increasing SR was unimodal with four species per plot achieving the greatest productivity. Transgressive overyielding, which was compared to the most productive of corresponding monocultures, did not occur in most polycultures. We conclude that substrate N retention was enhanced by plant SR even with high N input, and plant SR could be managed to improve the efficiency of N removals in CWs for wastewater treatment.

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“…Fisher et al ( 2009 ) also demonstrated a better performance of mixed wetlands, with the mixture of I. pseudacorus and other plants showing the best performance. Other advantages of mixed CWs are their lower susceptibility to seasonal changes and disturbances, as well as their more biodiverse microbial populations (Qiu et al, 2011; Zhang et al, 2010.…”

Section: Aq2mentioning

confidence: 99%

Comparison of three plants in a surface flow constructed wetland treating eutrophic water in a Mediterranean climate

et al. 2015

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The goal of this study is to examine the suitability of three plants, Typha spp., Phragmites spp. and Iris pseudacorus, in a free water surface constructed wetland created to treat eutrophic water from Lake Albufera (Valencia, Spain), a wetland of international importance. The growth, coverage and nutrient content of the three plants were studied, and chemical analyses were performed according to standard methods. The maximum standing crops measured for each plant were 1.9, 18.2 and 3.3 kg m , respectively, and their average nutrient concentrations were 2.1, 1.2 and 1.7 g P kg and 12.1, 11.7 and 10.1 g N kg , respectively. A multiple harvest of Iris pseudacorus revealed that the removal of nutrients could be increased up to 50% for N and 100% for P compared with a single harvest. Biomass decomposition assays showed high values for five day biochemical oxygen demand (115-207 mg O g , depending on the plant and its age) and a substantial release of phosphorus, up to 100% of that contained in the biomass, highlighting

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Effects of plant diversity on microbial biomass and community metabolic profiles in a full-scale constructed wetland

Cited by 156 publications

References 44 publications

Treatment performance and microorganism community structure of integrated vertical-flow constructed wetland plots for domestic wastewater

Treatment performance and microorganism community structure of integrated vertical-flow constructed wetland plots for domestic wastewater

Plant Species Richness Affected Nitrogen Retention and Ecosystem Productivity in a Full‐Scale Constructed Wetland

Comparison of three plants in a surface flow constructed wetland treating eutrophic water in a Mediterranean climate

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