Regional nitrogen budgets and riverine N & P fluxes for the drainages to the North Atlantic Ocean: Natural and human influences
- R. Howarth, G. Billen, Zhu Zhao-liang
- Environmental Science
- 6 February 1996
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 collectively…
The fate of nitrogen and phosphorus at the land-sea margin of the North Atlantic Ocean
- S. Nixon, J. Ammerman, S. Seitzinger
- Environmental Science
- 20 April 1996
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 flux of these…
Nitrogen retention in rivers: model development and application to watersheds in the northeastern U.S.A.
- S. Seitzinger, R. Styles, N. van Breemen
- Environmental Science
- 1 April 2002
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 body (ratio of water…
Human alteration of the global nitrogen and phosphorus soil balances for the period 1970–2050
- A. Bouwman, A. Beusen, G. Billen
- Environmental Science
- 1 December 2009
The Millennium Ecosystem Assessment scenarios for 2000 to 2050 describe contrasting future developments in agricultural land use under changing climate. Differences are related to the total crop and…
The European Nitrogen Assessment: Sources, Effects and Policy Perspectives
- M. Sutton, Clare M. Howard, B. Grizzetti
- Environmental Science
- 2011
List of contributors Preface Summary for policymakers Technical summary 1. Assessing our nitrogen inheritance Part I. Nitrogen in Europe: The Present Position: 2. The European nitrogen problem in a…
50 year trends in nitrogen use efficiency of world cropping systems: the relationship between yield and nitrogen input to cropland
- L. Lassaletta, G. Billen, B. Grizzetti, J. Anglade, J. Garnier
- Physics, Environmental Science
- 1 October 2014
Nitrogen (N) is crucial for crop productivity. However, nowadays more than half of the N added to cropland is lost to the environment, wasting the resource, producing threats to air, water, soil and…
Nitrous oxide emissions from secondary activated sludge in nitrifying conditions of urban wastewater treatment plants: effect of oxygenation level.
- G. Tallec, J. Garnier, G. Billen, M. Gousailles
- EngineeringWater Research
- 1 August 2006
Global river nutrient export: A scenario analysis of past and future trends
- S. Seitzinger, E. Mayorga, J. Harrison
- Environmental Science
- 1 December 2010
An integrated modeling approach was used to connect socioeconomic factors and nutrient management to river export of nitrogen, phosphorus, silica and carbon based on an updated Global NEWS model.…
Sources of nitrate in rivers draining sixteen watersheds in the northeastern U.S.: Isotopic constraints
- B. Mayer, E. Boyer, K. Paustian
- Environmental Science
- 27 July 2002
The feasibility of using nitrogen and oxygenisotope ratios of nitrate (NO3−) forelucidating sources and transformations ofriverine nitrate was evaluated in a comparativestudy of 16 watersheds in the…
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