Flood-Controlled Excess-Air Formation Favors Aerobic Respiration and Limits Denitrification Activity in Riparian Groundwater

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Flood-Controlled Excess-Air Formation Favors Aerobic Respiration and Limits Denitrification Activity in Riparian Groundwater

1 Department of Environmental Systems Science, Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, Zurich, Switzerland, 2 Department Surface Waters, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum, Switzerland, 3 Department Water Resources and Drinking Water, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland, 4 ...

متن کامل

Impacts Of Hillslope And Floodplain Characteristics On Groundwater Dynamics: Implications For Riparian Denitrification

One of the beneficial roles of riparian buffers is the capacity to attenuate groundwater nitrate before it can discharge to streams. Denitrification is one of the most important processes that permanently removes nitrate from groundwater; it requires anoxic conditions, a carbon source, and a suitable residence time as the reaction is microbially mediated. As denitrification rates are highly dep...

متن کامل

Denitrification in riparian forests receiving agricultural discharges

Riparian forests can remove large amounts of nitrate from the groundwater discharges of adjacent uphill croplands. We review the mechanisms that could account for NO3 removal. Denitrification is hypothesized to be important, but measurement problems limit the relevant field data. We used large chambers (1-20 mZ) and tunable-diode laser infrared spectrophotometry to measure nitrous oxide (NzO) e...

متن کامل

Nitrate Dynamics in Riparian Forests: Groundwater Studies

This study was conducted to assess the removal of groundwater nitrate (NOa-) in different soil drainage classes within three riparian forests located in Rhode Island. A solution of NOa-and a conservative tracer [either bromide (Br-) or chloride (CI-)] was applied in growing and the dormant seasons to trenches upgradient of wetland locations with hydric soils (poorly and very poorly drained soil...

متن کامل

Microbial Nitrate Processing in Shallow Groundwater in a Riparian Forest

We measured denitrification, immobilization, and respiration in microcosms that simulated groundwater conditions in a riparian forest in Rhode Island. Measured rates were compared with rates of NOj" removal measured in a companion study using a groundwater monitoring well network and 10-mo injection of NOf and a bromide tracer to groundwater in the same riparian forest. Limiting factors for den...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Frontiers in Environmental Science

سال: 2015

ISSN: 2296-665X

DOI: 10.3389/fenvs.2015.00075