@article {88,
	title = {GROSS NITROGEN BALANCES HANDBOOK},
	year = {2007},
	month = {10/2007},
	pages = {24},
	institution = {OECD, EUROSTAT},
	keywords = {agriculture, methodology, nitrogen, nutrient},
	url = {http://www.oecd.org/department/0,3355,en_2649_33793_1_1_1_1_1,00.html},
	author = {OECD}
}
@inbook {Leip2011p,
	title = {{Agri-Environmental Nitrogen Indicators for EU27}},
	booktitle = {Bio-Economic Models applied to Agricultural Systems},
	year = {2011},
	pages = {109{\textendash}123},
	publisher = {Springer Netherlands},
	organization = {Springer Netherlands},
	address = {Dordrecht},
	abstract = {Nitrogen is a key element to ensure modern agriculture{\textquoteright}s output, sustaining global food, feed, fibre and now bio-energy production. But it also accounts also for, or at least contributes to, key environmental problems that challenge the well functioning of today{\textquoteright}s societies (Sutton et al. 2011). One molecule of nitrogen can contribute to one or many environmental problems, including eutrophication, groundwater pollution via leaching and run-off of nitrates and organic nitrogen, climate change via N2O emissions, acidification via ammonia emissions and may affect human health via ozone formation or biodiversity via nitrogen deposition on natural areas. This multiple impact of nitrogen is often referred to as the {\textquotedblleft}nitrogen cascade{\textquotedblright} (Galloway et al. 2003). Accordingly, agri-environmental indicator frameworks typically feature several indicators related to nitrogen such as ammonia emissions, use of nitrogen fertilisers, gross N surplus, nitrates in water or GHG emissions (EEA 2005). Often, however, these indicators are calculated independently from each other based on sometimes contradicting data sources, methodologies or assumptions (see e.g. Grizzetti et al. 2007). This includes also the first overview of the {\textquotedblleft}European Nitrogen Case{\textquotedblright} that was presented by van Egmond et al. (2002) at the second International Nitrogen Conference held in Potomac (USA). Thus, a system that calculates the detailed nitrogen balance and the related indicators for agriculture in Europe on the basis of consistent data sets and advanced methodologies is highly desirable. A closed balance of nitrogen is calculated in the CAPRI (Common Agricultural Policy Regionalized Impact) model, i.e., next to monetary values and product balances, also the nutrient fluxes are in accordance with the law of mass-conservation (Britz et al., 2007). This has been exploited by Leip et al. (2011b) to develop nitrogen budgets for the system boundaries of the soil, land, and the farm. The authors provide for the first time mutually consistent calculations of farm, land and soil N-budgets for all member states of the European Union and quantify the two major indicators, namely the nitrogen use efficiency and the nitrogen surplus for each of the N-budgets. The data showed that the nitrogen surplus increases for the soil {\textless} land {\textless} farm budget, while the nitrogen use efficiency decreases analogically for soil {\textgreater} land {\textgreater} farm budgets. The farm N-budget appeared to be the most relevant one giving a picture of the overall N management of agriculture and is accordingly recommended for integrative studies assessing the {\textquotedblleft}nitrogen footprint{\textquotedblright} of society. Based on the work of Leip et al. (2011b), we propose in this chapter three additional nitrogen indicators focusing even more on the use society in European countries makes of their productive land.},
	keywords = {mypublications},
	isbn = {978-94-007-1901-9},
	doi = {10.1007/978-94-007-1902-6_6},
	url = {http://www.springerlink.com/content/pq4846/{\#}section=954524{\&}page=1{\&}locus=0},
	author = {Leip, Adrian and Weiss, Franz and Britz, Wolfgang},
	editor = {Flichman, Guillermo}
}
@inbook {Leip2011d,
	title = {{Integrating nitrogen fluxes at the European scale}},
	booktitle = {European Nitrogen Assessment},
	year = {2011},
	pages = {345{\textendash}376},
	publisher = {Cambridge University Press},
	organization = {Cambridge University Press},
	chapter = {16},
	address = {Cambridge, UK},
	keywords = {mypublications},
	url = {http://www.nine-esf.org/ENA-Book},
	author = {Leip, Adrian and Achermann, Beat and Billen, Gilles and Bleeker, Albert and Bouwman, Alexander F and De Vries, Wim and Dragosits, Ulli and D{\"o}ring, Ulrike and Fernall, Dave and Geupel, Markus and Heldstab, J{\"u}rg and Johnes, Penny and Le Gall, Anne Christine and Monni, Suvi and Neve{\v c}e{\v r}al, Rostislav and Orlandini, Lorenzo and Prud{\textquoteright}homme, Michel and Reuter, Hannes I and Simpson, David and Seufert, G{\"u}nther and Spranger, Till and Sutton, Mark A. and van Aardenne, John and Vo{\ss}, Maren and Winiwarter, Wilfried},
	editor = {Sutton, Mark and Howard, Clare and Erisman, Jan Willem and Billen, Gilles and Bleeker, Albert and van Grinsven, Hans and Grennfelt, Peringe and Grizzetti, Bruna}
}
@article {Sutton2011a,
	title = {{Too much of a good thing.}},
	journal = {Nature},
	volume = {472},
	number = {7342},
	year = {2011},
	month = {apr},
	pages = {159{\textendash}61},
	keywords = {agriculture, Agriculture: economics, Animals, Biodiversity, Climate Change, Cost-Benefit Analysis, Diet, Environmental Pollution, Environmental Pollution: adverse effects, Environmental Pollution: analysis, Environmental Pollution: economics, Environmental Pollution: statistics {\&} numerical da, Fertilizers, Fertilizers: analysis, Food Supply, Fossil Fuels, Humans, International Cooperation, Meat, Meat: utilization, nitrogen, Nitrogen Fixation, Nitrogen: adverse effects, Nitrogen: analysis, Nitrogen: economics, Nitrogen: metabolism, Reactive Nitrogen Species, Reactive Nitrogen Species: adverse effects, Reactive Nitrogen Species: analysis, Reactive Nitrogen Species: chemistry, Reactive Nitrogen Species: metabolism},
	issn = {1476-4687},
	doi = {10.1038/472159a},
	url = {http://www.ncbi.nlm.nih.gov/pubmed/21478874},
	author = {Sutton, Mark A. and Oenema, Oene and Erisman, Jan Willem and Leip, Adrian and van Grinsven, Hans and Winiwarter, Wilfried}
}
@article {Leip2014,
	title = {{The nitrogen footprint of food products in the European Union}},
	journal = {The Journal of Agricultural Science},
	volume = {152},
	number = {S1},
	year = {2014},
	month = {oct},
	pages = {20{\textendash}33},
	keywords = {Footprint, mypublications, nitrogen, online},
	issn = {0021-8596},
	doi = {10.1017/S0021859613000786},
	url = {http://www.journals.cambridge.org/abstract{\_}S0021859613000786},
	author = {Leip, Adrian and Weiss, Franz and Lesschen, Jan Peter and Westhoek, Henk}
}
@article {Leip2014b,
	title = {{Nitrogen-neutrality: a step towards sustainability}},
	journal = {Environmental Research Letters},
	volume = {9},
	number = {11},
	year = {2014},
	month = {nov},
	pages = {115001},
	publisher = {IOP Publishing},
	keywords = {Footprint, mypublications, nitrogen},
	issn = {1748-9326},
	doi = {10.1088/1748-9326/9/11/115001},
	url = {http://stacks.iop.org/1748-9326/9/i=11/a=115001?key=crossref.e00563c757c6f69d0f81a98a7c54fa9c},
	author = {Leip, Adrian and Leach, Allison M. and Musinguzi, Patrick and Tumwesigye, Trust and Olupot, Giregon and Stephen Tenywa, John and Mudiope, Joseph and Hutton, Olivia and Cordovil, Claudia M.d.S. and Bekunda, Mateete and Galloway, James N.}
}
@article {Ozbek2015,
	title = {{Estimating the gross nitrogen budget under soil nitrogen stock changes: A case study for Turkey}},
	journal = {Agriculture, Ecosystems {\&} Environment},
	volume = {205},
	year = {2015},
	month = {jul},
	pages = {48{\textendash}56},
	keywords = {agricultural production, budget, carbon, mypublications, nitrogen, soil},
	issn = {01678809},
	doi = {10.1016/j.agee.2015.03.008},
	url = {http://linkinghub.elsevier.com/retrieve/pii/S0167880915000924},
	author = {{\"O}zbek, Fethi {\c S}aban and Leip, Adrian}
}
@article {AdrianLeip,
	title = {{The value of manure - manure as co-product in life cycle assessment}},
	journal = {Journal of Environmental Management},
	volume = {241},
	number = {March},
	year = {2019},
	month = {jul},
	pages = {293{\textendash}304},
	publisher = {Elsevier},
	keywords = {Allocation, Fertilizer, Life cycle assessment, Livestock supply chains, Manure, Nutrients},
	issn = {03014797},
	doi = {10.1016/j.jenvman.2019.03.059},
	url = {https://linkinghub.elsevier.com/retrieve/pii/S0301479719303627},
	author = {Leip, Adrian and Ledgart, Stewart and Uwizeye, Aimable and Palhares, Julio C.P. and Aller, Fernanda and Amon, Barbara and Binder, Michael and Cordovil, Claudia M.d.S. and Dong, Hongming and Fusi, Alessandra and Helin, Janne and H{\"o}rtenhuber, Stefan and Hristov, Alexander N. and Koelsch, Richard and Liu, Chunjiang and Masso, Cargele and Nkongolo, Nsalambi V. and Patra, Amlan K. and Redding, Matthew R. and Rufino, Mariana C. and Sakrabani, Ruben and Thoma, Greg and Vert{\`e}s, Fran{\c c}oise and Wang, Ying and Ledgard, Stewart and Uwizeye, Aimable and Palhares, Julio C.P. and Aller, M. Fernanda and Amon, Barbara and Binder, Michael and Cordovil, Claudia M.d.S. and De Camillis, Camillo and Dong, Hongming and Fusi, Alessandra and Helin, Janne and H{\"o}rtenhuber, Stefan and Hristov, Alexander N. and Koelsch, Richard and Liu, Chunjiang and Masso, Cargele and Nkongolo, Nsalambi V. and Patra, Amlan K. and Redding, Matthew R. and Rufino, Mariana C. and Sakrabani, Ruben and Thoma, Greg and Vert{\`e}s, Fran{\c c}oise and Wang, Ying}
}
