Methods for measuring denitrification: diverse approaches to a difficult problem

PM Groffman, MA Altabet, JK Böhlke… - Ecological …, 2006 - Wiley Online Library
Denitrification, the reduction of the nitrogen (N) oxides, nitrate (NO3−) and nitrite (NO2−), to
the gases nitric oxide (NO), nitrous oxide (N2O), and dinitrogen (N2), is important to primary …

Nitrogen removal in streams of agricultural catchments—a literature review

F Birgand, RW Skaggs, GM Chescheir… - Critical Reviews in …, 2007 - Taylor & Francis
Excess nutrient loads have been recognized to be the major cause of serious water quality
problems recently encountered in many estuaries and coastal waters of the world …

Regional nitrogen budgets and riverine N & P fluxes for the drainages to the North Atlantic Ocean: Natural and human influences

RW Howarth, G Billen, D Swaney, A Townsend… - Nitrogen cycling in the …, 1996 - Springer
We present estimates of total nitrogen and total phosphorus fluxes in rivers to the North
Atlantic Ocean from 14 regions in North America, South America, Europe, and Africa which …

Coastal eutrophication and harmful algal blooms: Importance of atmospheric deposition and groundwater as “new” nitrogen and other nutrient sources

HW Paerl - Limnology and oceanography, 1997 - Wiley Online Library
Nitrogen‐limited estuaries, shallow coastal waters, and continental shelf waters cover only
15% of the world's ocean area, but account for nearly half the global oceanic primary …

The fate of nitrogen and phosphorus at the land-sea margin of the North Atlantic Ocean

SW Nixon, JW Ammerman, LP Atkinson… - Nitrogen cycling in the …, 1996 - Springer
Five large rivers that discharge on the western North Atlantic continental shelf carry about
45% of the nitrogen (N) and 70% of the phosphorus (P) that others estimate to be the total …

Global distribution of nitrous oxide production and N inputs in freshwater and coastal marine ecosystems

SP Seitzinger, C Kroeze - Global biogeochemical cycles, 1998 - Wiley Online Library
This study examines N2O emissions from aquatic environments globally, particularly as they
are affected by anthropogenic activity. The global distribution of N2O production in rivers …

Inputs, transformations, and transport of nitrogen and phosphorus in Chesapeake Bay and selected tributaries

WR Boynton, JH Garber, R Summers, WM Kemp - Estuaries, 1995 - Springer
In this paper we assemble and analyze quantitative annual input-export budgets for total
nitrogen (TN) and total phosphorus (TP) for Chesapeake Bay and three of its tributary …

Nitrogen retention in rivers: model development and application to watersheds in the northeastern USA

SP Seitzinger, RV Styles, EW Boyer… - The nitrogen cycle at …, 2002 - Springer
A regression model (RivR-N) was developed that predicts the proportion of N removed from
streams and reservoirs as an inverse function of the water displacement time of the water …

Carbon and nitrogen stable isotopes in suspended matter and sediments from the Schelde Estuary

JJ Middelburg, J Nieuwenhuize - Marine Chemistry, 1998 - Elsevier
The C/N and stable C and N isotope ratios (δ13C, δ15N) of sedimentary and suspended
particulate matter were determined in the Schelde Estuary. Suspended matter was divided …

Nitrogen loading from coastal watersheds to receiving estuaries: new method and application

I Valiela, G Collins, J Kremer, K Lajtha… - Ecological …, 1997 - Wiley Online Library
In this paper we develop a model to estimate nitrogen loading to watersheds and receiving
waters, and then apply the model to gain insight about sources, losses, and transport of …