Fig. 4. Concentrations of phosphorus (top) and nitrogen (bottom) in the river and in the lagoon (Kleines Haff, centre), as well as the riverine loads (at the river mouth,) from 1960 to 2003. Lines indicate model results of MONERIS (river) and ERGOM (lagoon), and dots show data (LUNG, Mecklenburg-Vorpommern, personal communication). The colored lines indicate the present German water-quality thresholds according to the European Water Framework Directive (LAWA-AO 2007, unpublished working paper).