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Effects of CO2-enrichment and N-nutrition on mutual interference between Trifolium repens and Lolium perenne
1995
Schenk, Ulrich | Weigel, Hans-Joachim | Jäger, Hans-Jürgen
Effects of pollutant mixtures
2002
Fangmeier, Andreas | Bender, Jürgen | Weigel, Hans-Joachim | Jäger, Hans-Jürgen
Sources, atmospheric transport and sinks of tropospheric nitrous and nitric acids
1999
Zimmerling, Ralf | Dämmgen, Ulrich
Toxicity of East Sumatra river sediments - bacterial luminescence, brine shrimp and Acetylcholinesterase Inhibition Tests
2012
Scholz, Bettina | Ziehe, Daniel | Pivetta, Lucinela A. | Pielok, Nils | Liebezeit, Gerd
Analysen von Inhaltsstoffen der Umgebungsluft mit schulischen Mitteln | The use of school supplies to analyze the content of local air
1993
Dämmgen, Ulrich
Biomarkers in the Siak River System, E. Sumatra, Indonesia
2014
Liebezeit, Gerd | Wöstmann, Ralf | Ziehe, Daniel
A total of 33 plant species and 122 surface sediments were obtained from March 2004 to November 2008 in the Siak River system including its major tributaries and coastal areas. Grain size distribution shows the sediments to be sands to silt with a general trend of coarser sediments in the upper reaches and fi ner ones in the estuary. The expected linear relationship between the content of organic carbon and the mud fraction of the sediments (<63 µm) is distorted by input of (a) clay-sized, organic-poor material from river bank erosion and (b) input of coarse plant detritus. All samples were analysed for n-alkanes and steroids. For all plant samples and a limited number of sediment samples, fatty acids were also determined. The data indicate a variety of organic carbon sources, the dominant one being river bank vegetation. Urban and industrial discharges, peat erosion and atmospheric deposition of black carbon and biomarkers might also play a role in controlling the lipid composition of the sedimentary organic carbon pool.
Afficher plus [+] Moins [-]Meteorology
2013
Raspe, Stephan | Bastrup-Birk, Annemarie | Fleck, Stefan | Weis, Wendelin | Mayer, Helmut | Meesenburg, Henning | Wagner, Markus | Schindler, Dirk | Gartner, Karl
