Sun, Weimin Sun, Xiaoxu Li, Baoqin Xu, Rui Young, Lily Y Dong, Yiran Zhang, Miaomiao Kong, Tianle Xiao, Enzong Wang, Qi
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Published in
Environment international
A unique terrace with sharp gradient of environmental conditions was selected to study the microbial response and survival strategies to the extreme environments introduced by acid mine drainage (AMD) contamination. A combination of geochemical analyses, metagenomic sequencing, ex-situ microcosm setups, and statistical analyses were used to investi...
xiaowen, li song, chunlei zhou, zijun xiao, jian wang, siyang yang, liu cao, xiuyun zhou, yiyong
Dissimilatory nitrate reduction to ammonium (DNRA) plays an important role in controlling nitrogen (N) loading in lake ecosystems. However, studies on the linkage between DNRA bacterial community structure and lake eutrophication remain unclear. We examined the community and abundance of DNRA bacteria at six basins of four shallow lakes with differ...
baas, peter knoepp, jennifer d. mohan, jacqueline e.
Understanding the dominant soil nitrogen (N) cycling processes in southern Appalachian forests is crucial for predicting ecosystem responses to changing N deposition and climate. The role of anaerobic nitrogen cycling processes in well-aerated soils has long been questioned, and recent N cycling research suggests it needs to be re-evaluated. We ass...
Epp Schmidt, Dietrich J. Kotze, David Johan Hornung, Erzsébet Setälä, Heikki Yesilonis, Ian Szlavecz, Katalin Dombos, Miklós Pouyat, Richard Cilliers, Sarel Tóth, Zsolt
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Published in
Frontiers in Microbiology
Urbanization results in the systemic conversion of land-use, driving habitat and biodiversity loss. The “urban convergence hypothesis” posits that urbanization represents a merging of habitat characteristics, in turn driving physiological and functional responses within the biotic community. To test this hypothesis, we sampled five cities (Baltimor...
Palacin-Lizarbe, Carlos Camarero, Lluís Hallin, Sara Jones, Christopher M. Cáliz, Joan Casamayor, Emilio O. Catalan, Jordi
Published in
Frontiers in Microbiology
Effects of nitrogen (N) deposition on microbially-driven processes in oligotrophic freshwater ecosystems are poorly understood. We quantified guilds in the main N-transformation pathways in benthic habitats of 11 mountain lakes along a dissolved inorganic nitrogen gradient. The genes involved in denitrification ( nirS , nirK , nosZ ), nitrification...
Hoffman, Daniel K. McCarthy, Mark J. Newell, Silvia E. Gardner, Wayne S. Niewinski, Desi N. Gao, Juan Mutchler, Troy R.
Published in
Estuaries and Coasts
Seagrass beds are vulnerable to eutrophication (nutrient loading) and declining worldwide. To quantify the fate of nitrogen (N) inputs, intact sediment cores were incubated in a continuous-flow system with 15N enrichments to compare N consumption and efflux pathways within and near seagrass (Thalassia testudinum) beds in St. Joseph Bay, Florida. Se...
Gold, Adam C Thompson, Suzanne P Piehler, Michael F
Published in
Water research
Stormwater control measures (SCMs) have the potential to mitigate negative effects of watershed development on hydrology and water quality. Stormwater regulations and scientific literature have assumed that SCMs are important sites for denitrification, the permanent removal of nitrogen, but this assumption has been informed mainly by short-term loa...
Rahman, Md. Moklesur Roberts, Keryn L. Warry, Fiona Grace, Michael R. Cook, Perran L. M.
Published in
Biogeochemistry
Water treatment wetlands are increasingly being used to reduce pollutant loads including nitrogen (N) in urban runoff. Processes such as denitrification (DNF) and anaerobic ammonium oxidation (anammox), which remove N, and dissimilatory nitrate reduction to ammonium (DNRA), which recycles N, play an important role in controlling NOx (NO3− + NO2−) r...
Li, Xiaofei Gao, Dengzhou Hou, Lijun Liu, Min
Published in
Plant and Soil
Background and aimsDissimilatory nitrate reduction to ammonium (DNRA) plays an important role in keeping nitrate retention as a more bioavailable form (ammonium) in estuarine and intertidal environments. However, the effects of soil abiotic and biotic characteristics on DNRA in Spartina alterniflora ecotones of estuarine and intertidal wetlands rem...
Nordström, Albin
This thesis evaluates passive denitrifying woodchip bioreactors (DWBs) for the removal of nitrate (NO3-) in neutral pH mine drainage, where water is passed through a carbon-rich porous matrix (e.g. woodchips) for the reduction of NO3- to nitrogen gas. DWBs have been used for the removal of NO3- from water in various settings and are expected to ope...
