Denitrification and soil characteristics of wetlands created on two mine soils in east Texas, USA

Johns, D.; Williams, Hans M.; Farrish, Kenneth W.; Wagner, Stephen C.

doi:10.1672/0277-5212(2004)024[0057:dascow]2.0.co;2

Cited by 14 publications

(8 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These observations suggest that LHW had already developed a relatively mature bacterial denitrifying community capable of reducing excess NO 3 − just a few years after completion. Similar results have also been found in studies of recently-created wetlands in East Texas (Johns et al 2004) and in Virginia (Wolf et al 2011), which measured denitrification rates within a few years' postestablishment that were similar to those of the reference wetlands. Compared with other studies using the MIMS Fig.…”

Section: Discussionsupporting

confidence: 84%

“…The ability of wetlands to reduce N loading to downstream water via denitrification often is a key metric of wetland creation success, but measurements are highly variable. Denitrification in newly created wetlands in North Carolina and Texas successfully removed excess NO 3 − (Poe et al 2003;Johns et al 2004), but Peralta et al…”

Section: Introductionmentioning

confidence: 99%

“…(2010) found denitrification to be negligible in restored/created wetlands in Illinois. Furthermore, studies indicate denitrification potential is often higher in older created and natural wetlands compared with younger created wetlands (Johns et al 2004;Wolf et al 2011). Differences in denitrification rates in created wetlands are usually attributed to the degree to which the soil structure and chemistry resemble those of a natural wetland.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Development of Denitrification and of the Denitrifying Community in a Newly-Created Freshwater Wetland

et al. 2020

View full text Add to dashboard Cite

Agricultural growth and urban development have increased nutrient loading into streams to unnatural levels, negatively affecting estuaries downstream. Wetland creation along streams has the potential to mitigate watershed nutrient loading, providing the necessary conditions to encourage bacterial denitrification. We compared denitrification in two wetland systems, one recently created and one well established, along a branch of the St. Martin River, the largest and most degraded tributary flowing into the Maryland Coastal Bays. Ambient and potential denitrification rates were measured using membrane inlet mass spectrometry, and the denitrifying bacterial communities were compared using qPCR with genes nirK, nirS, nosZ-I, and nosZ-II. For all sites, denitrification rates were highly variable, but similar between the two wetlands, while potential rates increased almost 10-fold after a NO 3 − amendment, indicating that the denitrifying communities can respond to pulses of NO 3 − delivered via episodic flow events. Overall, the denitrifying community was more abundant at the created wetland, but the reference site had a higher abundance of the nosZ-I gene and, therefore, a lower genetic potential for N 2 O production. The created wetland has developed denitrification rates and a denitrifying community similar to those of the established wetland and could successfully remove excess nutrients entering the system.

show abstract

Section: Discussionsupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Development of Denitrification and of the Denitrifying Community in a Newly-Created Freshwater Wetland

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Bonnett et al (2013) found that denitrification rate was the highest in the organic Histosol with higher organic matter. Lin et al (2007) also found that soil denitrification rate was significantly correlated (p < 0.01) with the extractable organic carbon and organic matter, as organic matter would control denitrification capacity when moisture and NO 3 --N were not limiting (Johns et al, 2004). Higher TP content might be another factor influencing potential net denitrification rate.…”

Section: Potential Net Denitrificaiton Ratementioning

confidence: 86%

Denitrification potential of marsh soils in two natural saline-alkaline wetlands

et al. 2014

View full text Add to dashboard Cite

Little information is available on denitrification potential of marsh soils in natural saline-alkaline wetlands. The denitrification potentials of an open wetland in the floodplain (Erbaifangzi wetland) and a closed wetland (Fulaowenpao wetland) in backwater areas in Jilin Province of Northeast China were monitored by an anaerobic incubation at 30℃ for 25 days. Our results showed that the relative denitrification index (RDI) increased gradually with incubation time, and showed a rapid increase in the first 5 days of incubation. The RDI values declined quickly from surface soils to subsurface soils and then kept a small change in deeper soils along soil profiles over the incubation time. Denitrification proceeded much faster in the top 20 cm soils of open wetland than in the closed wetland, whereas no significant differences in RDI values were observed in deeper soils between both wetlands. The RDIs were significantly negatively correlated with bulk density and sand content, while a significantly positive correlation with clay content, soil organic matter, total nitrogen and phosphorous. The maximum net NO 3-N loss through denitrification in 1 m depth were higher in the open wetland than the closed wetland with higher soil pH values. Future research should be focused on understanding the influencing mechanisms of soil alkalinity.

show abstract

“…Ammonifier were cultured in peptone ammonification medium (Fargo and Fleming, 1977), nitroso-bacteria medium reported by Kihn et al (2000), autotrophic nitrifying bacteria medium described by Lin et al (2006), and denitrifying bacteria medium followed by Johns et al (2004). Each microorganism was cultured with four dilutions and every concentration has four parallel tubes.…”

Section: The Most Probable Number (Mpn) Methodsmentioning

confidence: 99%

Impact of Herbicide 2, 4-Dichlorophenoxyacetic Acid Butyl Ester on Soil Nitrogen-transforming Bacterial Populations in Two Soils

Ding¹

2017

IJAB

View full text Add to dashboard Cite

Herbicides applied to the field affect the soil microbial community. Here, we evaluated the impact of the herbicide 2,4-dichlorophenoxyacetic acid butyl ester (2, 4-Dbe) on the microbial community and nitrogen-transforming bacterial populations at three doses of 0, 5 (field application rate) and 50 mg (ten-fold field rate) active ingredient (a.i.) kg -1 dry soil applied to Oxisol and Fluvo-aquic soils in the laboratory, respectively. After addition of 2, 4-Dbe, the populations of aerobic bacteria and actinomycete significantly depressed in the Oxisol soil (pH 5.9), while promoted in the Fluvo-aquic soil (pH 8.3). An increasing dose of 2, 4-Dbe combined with much less fungal populations in both soils (p < 0.05). Application of 5 mg a.i. 2, 4-Dbe significantly stimulated ammonifiers, and had no influence on nitroso-bacteria and denitrifying bacteria; 50 mg a.i. 2, 4-Dbe inhibited all of them (p < 0.05). Both doses of 2, 4-Dbe inhibited autotrophic nitrifying bacteria, but stimulated heterotrophic nitrifying bacteria in both soils (p < 0.05). These results revealed that the sensitivity of different microbial species to 2, 4-Dbe differed significantly, and the impacts were also associated with herbicide application rates and soil types. Fungi and autotrophic nitrifying bacteria are more sensitive, and heterotrophic nitrifying bacteria are insensitive to 2, 4-Dbe toxicity.

show abstract

Denitrification and soil characteristics of wetlands created on two mine soils in east Texas, USA

Cited by 14 publications

References 24 publications

The Development of Denitrification and of the Denitrifying Community in a Newly-Created Freshwater Wetland

The Development of Denitrification and of the Denitrifying Community in a Newly-Created Freshwater Wetland

Denitrification potential of marsh soils in two natural saline-alkaline wetlands

Impact of Herbicide 2, 4-Dichlorophenoxyacetic Acid Butyl Ester on Soil Nitrogen-transforming Bacterial Populations in Two Soils

Contact Info

Product

Resources

About