@article {60,
	title = {Synchronous trends in N-NO3 export from N-saturated river catchments in relation to climate},
	journal = {Biogeochemistry},
	volume = {86},
	year = {2007},
	pages = {251-268},
	abstract = {Long term trends (1978{\textendash}2005) of N{\textendash}NO3 concentrations in river water were investigated for 10 rivers draining forested catchments in Piedmont, North-Western Italy, and Canton Ticino, Switzerland. All the river catchments come into the category of the medium-high stage of N saturation (levels 2{\textendash}3 of the Stoddard{\textquoteright}s classification). The seasonal signal in N{\textendash}NO3 concentrations and its changes in time over the course of the study period was also evaluated. Single trends were analysed for significance and magnitude; statistical techniques for the detection of common trends were then applied to identify a common pattern in the N{\textendash}NO3 time series. Both the increasing NO3 levels and the limited seasonal pattern in recent years indicate an aggrading level of N saturation in time. Synchronous trends of N{\textendash}NO3 export were found for 8 rivers. The main common trend was used to test relationships with: (i) temperature, (ii) precipitation, and (iii) N deposition.
Step-changes in the data series were also assessed, and the main points of change are discussed in relation to meteorological factors and response to the N saturation status. Temperature proved to be the main factor affecting the temporal pattern of N{\textendash}NO3 concentrations: warm periods were usually followed by an N{\textendash}NO3 increase in river water due to enhanced mineralisation and nitrification in soil.},
	keywords = {Climate, Nitrate, Nitrogen saturation, Northern Italy, Trend, Water chemistry},
	author = {Rogora M.}
}
@article {74,
	title = {A simple model for assessing ammonia emission from ammoniacal fertilisers as affected by pH and injection into soil},
	journal = {Atmospheric Environment},
	volume = {42},
	year = {2008},
	pages = {4656-4664},
	abstract = {Ammonia (NH3) volatilisation following the application of ammoniacal fertilisers and liquid manure to agricultural land is a significant source of atmospheric NH3, which not only poses a risk to the environment, but may also result in a loss of plant available nitrogen (N). This study examined the potential for reducing NH3 emission through acidifying an ammoniacal solution and by injecting the solution. The combination of the two technologies was studied and a model for predicting the most optimal treatment was developed. In the laboratory, ammonium (NH4 +) hydroxide (aqueous NH3) was dissolved in water (pH 11) and injected into a loamy sand soil. The NH3 emission was measured with a dynamic chamber technology. Injecting the solution to 10mm below the soil surface reduced NH3 emission by 10\% compared to surface application, and injection to 30mm reduced emission by 20\% compared to surface application. Acidifying the ammoniacal solution by adding sulphuric acid and reducing pH to 10 reduced the emission by 60\% at a 10mm injection depth and 90\% at 30mm compared with non-acidified and surface-spread ammoniacal solution. The results show that there is an important interaction of pH and injection depth and that there is a need for models predicting a combined effect. This type of model could contribute to reduce cost and energy (traction force) by providing the optimal combination of acidifying and injection depth that gives a specific reduction in NH3 emission, which in this study was reducing pH to 10 and inject the fertiliser to 30mm below surface. This study showed that relatively simple models can predict the NH3 emission from injected ammoniacal fertilisers, but that there is still a need for developing algorithms that predict the effect of pH, including the pH buffering capacity of the fertiliser and the soil.},
	keywords = {EPNB},
	author = {Nyord, T and Schelde, K. M and Sogaard, K. T and Jensen, L. S and Sommer, S. G}
}
@article {Carlo,
	title = {{Sustainable food protein supply reconciling human and ecosystem health: A Leibniz Position}},
	journal = {Global Food Security},
	volume = {25},
	year = {2020},
	month = {jun},
	pages = {100367},
	keywords = {corresponding author, s},
	issn = {22119124},
	doi = {10.1016/j.gfs.2020.100367},
	url = {https://linkinghub.elsevier.com/retrieve/pii/S2211912420300201},
	author = {Weindl, Isabelle and Ost, Mario and Wiedmer, Petra and Schreiner, Monika and Neugart, Susanne and Klopsch, Rebecca and K{\"u}hnhold, Holger and Kloas, Werner and Henkel, Ina M. and Schl{\"u}ter, Oliver and Bu{\ss}ler, Sara and Bellingrath-Kimura, Sonoko D. and Ma, Hua and Grune, Tilman and Rolinski, Susanne and Klaus, Susanne}
}
@article {Vanham2020,
	title = {{Sustainable food system policies need to address environmental pressures and impacts: The example of water use and water stress}},
	journal = {Science of The Total Environment},
	volume = {730},
	year = {2020},
	month = {aug},
	pages = {139151},
	publisher = {The Authors},
	keywords = {EU, Food system, Policy, Sustainable, Water stress, Water use},
	issn = {00489697},
	doi = {10.1016/j.scitotenv.2020.139151},
	url = {https://doi.org/10.1016/j.scitotenv.2020.139151 https://linkinghub.elsevier.com/retrieve/pii/S0048969720326681 https://doi.org/10.1016/j.bbamem.2019.183135},
	author = {Vanham, Davy and Leip, Adrian}
}
