The Oder Estuary - IOW

I n h a l t
Pollution Load Compilation of the German part of the Oder Estuary (1990-
1998) (A. Bachor & C. Schöppe) .......................................................................................... 1
1 General Information ..................................................................................................... 1
2 Organic matter load...................................................................................................... 2
3 Nutrient load.................................................................................................................3
3.1 Nitrogen load................................................................................................................ 4
3.2 Phosphorus load ........................................................................................................... 5
4 Are there signs for an improved water quality in the Oder Estuary due to the reduced
pollution?......................................................................................................................7
5 Heavy metals load ...................................................................................................... 11
6 Summary .................................................................................................................... 13
Spatial pattern and long-term development of water quality in the Oder
Estuary (H. Bangel, G. Schernewski, A. Bachor & M. Landsberg-Uczciwek) .................. 17
1 Introduction ................................................................................................................ 18
2 The Oder river load .................................................................................................... 19
3 The Oder (Szczecin) Lagoon...................................................................................... 20
4 Salinity ....................................................................................................................... 21
5 Nitrogen...................................................................................................................... 24
5.1 Nitrate......................................................................................................................... 24
5.2 Ammonia.................................................................................................................... 29
5.3 Total-Nitrogen............................................................................................................ 34
6 Phosphorous ............................................................................................................... 38
6.1 Phosphate ................................................................................................................... 38
6.2 Total-Phosphorus ....................................................................................................... 43
6.3 Internal Eutrophication............................................................................................... 46
7 Silicate........................................................................................................................ 49
8 Chlorophyll................................................................................................................. 52
9 Water transparency (Secchi depth) ............................................................................ 57
10 The trophic state ......................................................................................................... 62
Die Repräsentativität des Monitorings im Oderästuar – neue Anforderungen
vor dem Hintergrund der Wasserrahmenrichtlinie (H. Bangel)................................... 67
1 Einleitung ................................................................................................................... 67
2 Beschreibung des Untersuchungsgebietes ................................................................. 70
3 Das Monitoringprogramm im Oderästuar .................................................................. 71
4 Methodik .................................................................................................................... 74
5 Ergebnisse .................................................................................................................. 77
5.1 Zeitliche Repräsentativität.......................................................................................... 79
5.2 Räumliche Repräsentativität ...................................................................................... 80
5.3 Eignng des Monit. zum repräsentativen Erfassen der raumzeitlichen
Dynamik ..................................................................................................................... 81
6 Diskussion .................................................................................................................. 82