TY - JOUR A1 - Knösche, Rüdiger A1 - Mühle, Ralf-Udo T1 - Geschichte der Havel-Flußlandschaft : die Regulierung des Flußlaufes und deren Wirkungen auf die Ökosysteme Y1 - 1997 ER - TY - JOUR A1 - Knösche, Rüdiger A1 - Bukowsky, Heinz T1 - Zur Schwermetallakkumulation in Dactylis glomerata auf Rieselfeldböden Y1 - 1996 SN - 3-7983-1680-5 ER - TY - JOUR A1 - Knösche, Rüdiger T1 - Organic sediment nutrient concentrations and their relationship with the hydrological connectivity of floodplain waters (River Havel, NE Germany) N2 - Investigations on large canalised rivers, for example the Danube, have shown that transported particulate matter, which is typically inorganic, is predominantly deposited in waters near the river's main channel. This investigation deals with the lower section of the River Havel (NE Germany), a canalised lowland river with a very flat floodplain. This river is highly polluted by nutrients from urban areas (Berlin) and a long chain of river lakes produces high concentrations of phytoplankton. Due to the high proportion of planktogenic detritus, it was hypothesised that greater quantities of nutrient-rich fine particulate organic matter (FPOM) would be deposited in floodplain waters located further from the main channel than has been reported for large rivers.The total nutrient, P-binding metal (Fe, Al, and Mn), organic and inorganic carbon (TOC, TIC) contents of the upper organic sediment layer (0 - 4 cm) were analysed in samples collected from 48 floodplain water and river sites. The sediment bulk density, calculated on the basis of dry mass content and loss on ignition, was used to characterize the waters according to the impact of the river current. The results showed that the variability of total phosphorus (TP) was best explained by the variability of total iron (TFe, R2 = 0.52). The floodplain water sediments could clearly be separated into two groups on the basis of the sediment particle size composition, and of the element ratios TOC:TP, TN:TP, primarily TFe:TP. The sediments from impounded river sections and from mouth sections of backwaters (approx. 100 - 200 m) were characterized by a high proportion particles from the 0.1 - 0.5 mm size fraction and by homogeneous, low TFe:TP, TOC:TP and TN:TP ratios. Sediments from distal sections of backwaters and of oxbow lakes tended to exhibit high element ratios with much higher variability. These results were interpreted as a spatially limited impact of the river on the floodplain water sediments. Contrary to expectation, the phosphorus bound in river seston was predominantly and very homogeneously deposited in the impounded river and mouth sections of backwaters. This implies that the inundation of the floodplain waters during spring floods seems to have no important material impact on the sediments in waters of low hydrologically connectivity with the River Havel. Y1 - 2006 ER - TY - JOUR A1 - Knösche, Rüdiger T1 - Planktische Primärproduktion und Phosphathaushalt in verschiedenen Gewässertypen der Unteren Havelaue bei Gülpe Y1 - 1994 ER - TY - JOUR A1 - Knösche, Rüdiger T1 - Untersuchungen zur Phosphatrücklösung aus den Sedimenten in hydrologisch unterschiedlich beeinflußten Auegewässern eines stauregulierten Tieflandflusses (Untere Havel, Brandenburg) Y1 - 1998 ER - TY - JOUR A1 - Knösche, Rüdiger T1 - Untersuchungen zum Schwermetalltransfer zwischen Boden und Pflanze Y1 - 1995 ER - TY - JOUR A1 - Knösche, Rüdiger T1 - Zur Rolle der Sedimente in verschiedenen Gewässern der Unteren Havel Y1 - 1995 ER - TY - JOUR A1 - Knösche, Rüdiger T1 - Wiederfund von Najas marina L. ssp. marina im Schollener See (Elbe-Havel-Winkel, Sachsen-Anhalt) Y1 - 2008 SN - 1432-8038 ER - TY - JOUR A1 - Knösche, Rüdiger T1 - Der Sauerstoffhaushalt in extrem flachen Gewässern : untersucht am Beispiel des Schollener Sees Y1 - 1996 ER - TY - JOUR A1 - Knösche, Rüdiger T1 - Das remobilisierbare Nährstoffpotential in Augewässersedimenten einer Tieflandflußaue Y1 - 2000 ER - TY - JOUR A1 - Kneis, David A1 - Knösche, Rüdiger A1 - Bronstert, Axel T1 - Ist eine Auswaschung von Nährstoffen aus Flussgewässersedimenten eine realistische Option zur Trophiesenkung? Y1 - 2004 SN - 3-937758-18-6 ER - TY - JOUR A1 - Kneis, David A1 - Knösche, Rüdiger A1 - Bronstert, Axel T1 - Ist ein Netto-Nährstoffexport aus Flussgewässersedimenten eine realistische Option zur Trophiesenkung? Y1 - 2004 SN - 3-937758-18-6 ER - TY - JOUR A1 - Kern, Jürgen A1 - Knösche, Rüdiger T1 - Landwirtschaft und Gewässerschutz im Land Brandenburg Y1 - 2004 SN - 3-89998-033-6 ER - TY - JOUR A1 - Ellmann, H. A1 - Knösche, Rüdiger A1 - Rowinsky, V. A1 - Rutter, S. T1 - Zum ökologischen Zustand des Schollener Sees Y1 - 1995 ER - TY - JOUR A1 - Blumenstein, Oswald A1 - Schubert, Oswald A1 - Bechmann, Wolfgang A1 - Bukowsky, Heinz A1 - Dautz, J. A1 - Kapp, Ingo A1 - Knösche, Rüdiger A1 - Portmann, Hans-Dieter A1 - Schachtzabel, Hartmut A1 - Schneider, Ingo A1 - Tessmann, Joachim T1 - Erste Ergebnisse einer Fallstudie zur Stoffdynamik naturschutzrelevanter Böden der Döberitzer Heide Y1 - 1997 ER - TY - JOUR A1 - Bechmann, Wolfgang A1 - Blumenstein, Oswald A1 - Bukowsky, Heinz A1 - Fischer, Franka A1 - Kapp, Ingo A1 - Knösche, Rüdiger A1 - Leinweber, Peter A1 - Portmann, Hans-Dieter A1 - Schachtzabel, Hartmut A1 - Schade, Wolfgang A1 - Schneider, Ingo A1 - Schubert, Rudolf T1 - Wenn Abwasser die Landschaft verändert ... : Fallstudie einer geoökologischen Komplexuntersuchung kontaminierter Geosysteme JF - Stoffdynamik in Geosystemen Y1 - 1995 VL - 1 PB - Loche CY - Berlin ER -