The biogeochemical nutrient fluxes (nitrogen, sulfur, calcium, magnesium, and potassium) were quantified for a mature Norway spruce forest in the northern Tyrolean Limestone Alps. The investigation area is situated in a humid, cool climate (MAT 6,4 and MAP 1661mm) with only 25-39% of the incoming water (throughfall) leaving the system via evapotranspiration, while discharge (leachate) counts for 61-75%. Surface run-off fluxes are negligible. The site is assumed to be at risk to become N-saturated due to the high amounts N deposition loads in recent years (up to 16,9 kgN*ha-*a-). The soil at the site is mainly classified as 120-160cm deep chromic cambisols and rendzic leptosols with a high content of coarse material. The pH of the soil water is higher than 7 at all depths (5-50cm) and a lot of Mg and Ca are found in the leachate due to the pure dolomitic bedrock. While N inputs via throughfall were about 8 kg N*ha-*a- between 2001 and 2008, sulfur inputs were <3kg*ha-*a-. Accordingly S outputs were low (4kg* ha-*a-). The interpretation of soil solution chemistry and the chemistry of the discharging water led to conflicting conclusions on the nitrogen status: (i) The nitrate concentrations in discharge water (leachate) decreased between 2001 and 2008 significantly from 18 to around 1,5 mg/l respectively from 39 to around 3kgN*ha-*a-. Generally, concentrations in winter were twice as high as in summer. Since 2004 the nitrate concentrations dropped, indicating that the system changed from an ‘N-saturated system to a ‘system in transition, according to the nomenclature of John Aber. ii) Nitrate concentrations and loads at 50cm soil-depth were comparable low and did not decrease between 2001 and 2008. Accordingly the investigation area is not yet nitrogen-saturated.