000005097 001__ 5097 000005097 005__ 20180208195401.0 000005097 0247_ $$2DOI$$a10.1007/s10705-009-9248-9 000005097 0247_ $$2WOS$$aWOS:000269686900005 000005097 037__ $$aPreJuSER-5097 000005097 041__ $$aeng 000005097 082__ $$a570 000005097 084__ $$2WoS$$aSoil Science 000005097 1001_ $$0P:(DE-Juel1)VDB4997$$aWendland, F.$$b0$$uFZJ 000005097 245__ $$aDetermination of nitrogen reduction levels necessary to reach groundwater quality targets in large river basins: The Weser basin case study, Germany Nutrient Cycling in Agroecosystems 000005097 260__ $$aDordrecht [u.a.]$$bSpringer Science + Business Media B.V$$c2009 000005097 300__ $$a63 - 78 000005097 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article 000005097 3367_ $$2DataCite$$aOutput Types/Journal article 000005097 3367_ $$00$$2EndNote$$aJournal Article 000005097 3367_ $$2BibTeX$$aARTICLE 000005097 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000005097 3367_ $$2DRIVER$$aarticle 000005097 440_0 $$021061$$aNutrient Cycling in Agroecosystems$$v85$$x1385-1314$$y1 000005097 500__ $$aThis project was commissioned by Germany's Federal Ministry of Food, Agriculture and Consumer protection (BMELV), the River Basin Commission Weser (RBC Weser) and the Federal States Bremen, Hessen, Niedersachsen, Nordrhein-Westfalen, Sachsen-Anhalt and Thuringen. 000005097 520__ $$aWe used the interdisciplinary model network REGFLUD to predict the actual mean nitrate concentration in percolation water at the scale of the Weser river basin (Germany) using an area-differentiated (100 m x 100 m) approach. REGFLUD combines the agro-economic model RAUMIS for estimating nitrogen surpluses and the hydrological models GROWA/DENUZ for assessing the nitrate leaching from the soil. The areas showing predicted nitrate concentrations in percolation water above the EU groundwater quality standard of 50 mg NO3/l, have been identified as priority areas for implementing nitrogen reduction measures. For these "hot spot'' areas a backward modelling approach was used to quantify the maximal permissible nitrogen surplus levels in agriculture to guarantee a mean long-term nitrate concentration in percolation water below 50 mg NO3/l. Research work will directly support the implementation of the EU-Water Framework Directive in the Weser basin, e.g. by using the maximal permissible nitrogen surplus levels as a framework for the derivation of regionally adapted and hence effective nitrogen reduction measures. 000005097 536__ $$0G:(DE-Juel1)FUEK407$$2G:(DE-HGF)$$aTerrestrische Umwelt$$cP24$$x0 000005097 588__ $$aDataset connected to Web of Science 000005097 650_7 $$2WoSType$$aJ 000005097 65320 $$2Author$$aCatchment modelling 000005097 65320 $$2Author$$aEU-water framework directive 000005097 65320 $$2Author$$aIntegrative agro-economic-hydrologic model network 000005097 65320 $$2Author$$aMaximal permissible nitrogen surplus levels 000005097 65320 $$2Author$$aNitrate leaching 000005097 65320 $$2Author$$aNitrate concentration in percolation water 000005097 7001_ $$0P:(DE-HGF)0$$aBehrendt, H.$$b1 000005097 7001_ $$0P:(DE-HGF)0$$aGömann, H.$$b2 000005097 7001_ $$0P:(DE-HGF)0$$aHirt, U.$$b3 000005097 7001_ $$0P:(DE-HGF)0$$aKreins, P.$$b4 000005097 7001_ $$0P:(DE-HGF)0$$aKuhn, U.$$b5 000005097 7001_ $$0P:(DE-Juel1)VDB4996$$aKunkel, R.$$b6$$uFZJ 000005097 7001_ $$0P:(DE-Juel1)129578$$aTetzlaff, B.$$b7$$uFZJ 000005097 773__ $$0PERI:(DE-600)1478384-8$$a10.1007/s10705-009-9248-9$$gVol. 85, p. 63 - 78$$p63 - 78$$q85<63 - 78$$tNutrient cycling in agroecosystems$$v85$$x1385-1314$$y2009 000005097 8567_ $$uhttp://dx.doi.org/10.1007/s10705-009-9248-9 000005097 909CO $$ooai:juser.fz-juelich.de:5097$$pVDB 000005097 9131_ $$0G:(DE-Juel1)FUEK407$$bErde und Umwelt$$kP24$$lTerrestrische Umwelt$$vTerrestrische Umwelt$$x0 000005097 9141_ $$y2009 000005097 915__ $$0StatID:(DE-HGF)0100$$2StatID$$aJCR 000005097 915__ $$0StatID:(DE-HGF)0111$$2StatID$$aWoS$$bScience Citation Index Expanded 000005097 915__ $$0StatID:(DE-HGF)0150$$2StatID$$aDBCoverage$$bWeb of Science Core Collection 000005097 915__ $$0StatID:(DE-HGF)0199$$2StatID$$aDBCoverage$$bThomson Reuters Master Journal List 000005097 9201_ $$0I:(DE-Juel1)VDB793$$d31.10.2010$$gICG$$kICG-4$$lAgrosphäre$$x1 000005097 970__ $$aVDB:(DE-Juel1)112510 000005097 980__ $$aVDB 000005097 980__ $$aConvertedRecord 000005097 980__ $$ajournal 000005097 980__ $$aI:(DE-Juel1)IBG-3-20101118 000005097 980__ $$aUNRESTRICTED 000005097 981__ $$aI:(DE-Juel1)IBG-3-20101118