Lake Constance

Haber gradually recovered much of his old dash and joie de vivre. He relaxed with chess and the newly fashionable detective novels and took friends on a boat trip up the Nile or invited them to his summer house near Lake Constance. Waiting with friends to be served in a busy restaurant, he grabbed a passing waiter by the coattails and begged with all the drama of his youth, Could you bring me a coffin How much is a cemetery plot ... 

Simon, M. (1987). Biomass and production of small and large free-living and attached bacteria in Lake Constance, Limnol. Oceanogr., 32, 591-607. 

The Rhine River above Lake Constance (alpine and prealpine catchment area) averages the following composition ... 

Saturation ratios of CaCC>3 in Lake Constance and the corresponding sedimentation load. (From Sigg, Sturm, Davis and Stumm, 1982). 

The ratios of different elements to C are listed in Table 11.5 as an attempt to test this assumption in various systems. For Lake Zurich and Lake Constance the following tentative ratio was calculated ... 

In Lake Zurich and Lake Constance, correlations between the contents of different trace elements in the settling particles and phosphorus, which may be used as an indicator of biological material, indicate that especially copper and zinc were likely... 

Concentrations of Cu and Zn as a function of P in the settling material from Lake Zurich and Lake Constance. P serves as an indicator of biological material. The regression lines for Zn and Cu fall nearly together, indicating that rather constant ratios Cu Zn P are found in this material. 

Lead profiles in Lake Constance (Summer 81 data Sigg, 1985) and in the Pacific Ocean (1981 data Schaule and Patterson, 1981). The similar shape of these profiles despite the difference in length scales (kilometers for the ocean and meters for the lake), illustrates the influence of the atmospheric deposition on the upper layers and the scavenging of Pb(II) by the settling particles. 

Muller, G. (1977), "Heavy Metals and PAH in a Sediment Core from Lake Constance", Naturwissenschaften 64, 427-431. 

Eels, Anguilla anguilla, are extremely sensitive to odors. Their detection threshold for /3-phenylethyl alcohol lies at the unbelievable concentration of 3 X 10 mol/l. This corresponds to 1ml of this alcohol diluted in 58 times the volume of Lake Constance (80km long) in southern Germany where these experiments were performed. It has been calculated that only three molecules are in the olfactory sac at any one time (Teichmann, 1957, 1959). Coho salmon... 

E. Angueria and M. White, Green Solvents for Processes , October 8-11, 2006, Lake Constance, Friedrichshafen, Germany. 

Christoph N (2003) Possibilities and limitations of wine authentication i ing stable isotope and meteorological data, data banks and statistical tests. Part 1 Wines from Franconia and Lake Constance 1992 to 2001. Mitt. Klosterneubirrg 53 23... 

On the one hand chemicals were being traced in environmental media as well as in products in unexpected dimensions both in terms of quality as well as in terms of quantity. On the other hand effects like "endocrine disruption" showed that also extremely low concentrations (like ppt, parts per trillion equals to the sugar concentration achieved if one lump of sugar would be dissolved in lake Constance) could lead to adverse effects. Moreover the current instruments of chemicals policy could - at least to a great extent - not cope with the political challenges. 

Rosenstock, B., and M. Simon. 1993. Use of dissolved combined and free amino acids by planktonic bacteria in Lake Constance. Limnology and Oceanography 38 1521—1531. 

Figure 10.12. Growth curve of DOM (sample Lake Constance, original sample and after addition of different H202 concentrations).

Giam CS, Atlas E. 1980. Accumulation ofphthalate ester plasticizers in Lake Constance sediments. Naturwissenschaften 67 598. 

Kober, B., Wessels, M., Bollhofer, A., and Mangini, A. (1999). Pb isotopes in sediments of Lake Constance, Central Europe constrain the heavy metal pathways and the pollution history of the catchment, the lake and the regional atmosphere. Geochim. Cosmochim. Acta 63, 1293-1303. 

In 1929 Regener reported very exact measurements with an electroscope in Lake Constance in Switzerland. He was able to detect the radiation even at a depth of seven hundred and fifty feet below the surface of the water. 

The Rhine River (above Lake Constance) averages a Mg2+ composition of 9 mg L-1 (see Stumm, 1996). If the annual runoff in that area is approximately 1 m3 per m2 of geographical area, estimate the erosion rate of Mg2+ (as MgC03), in g m 2 y 1. 

Bak F. and Pfennig N. (1991) Microbial sulfate reduction in littoral sediment of Lake Constance. FEMS Microbiol. Ecol. 85, 31-42. 

Frenzel P., Thebrath B., and Comad R. (1990) Oxidation of methane in the oxic surface layer of a deep lake sediment (Lake Constance). FEMS Microbiol. Ecol. 73, 149-158. 

Hauck S., Benz M., Brune A., and Schink B. (2001) Ferrous iron oxidation by denitrifying bacteria in profundal sediments of a deep lake (Lake Constance). FEMS Microbiol. Ecol. 37, 127-134. 

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