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Sulphide formation and chemical composition of bottom sediments of some Italian lakes

✍ Scribed by Ju. I. Sorokin

Book ID
104617803
Publisher
Springer
Year
1975
Tongue
English
Weight
427 KB
Volume
47
Category
Article
ISSN
1573-5141

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✦ Synopsis

Studies of sulphate reduction and rates of sulphide formation were made in the bottom sediments of the alpine lakes Lago Maggiore and Lago Lugano . The stock of sulphide sulphur was found to be 500-1500 mg/I . The rate of sulphate reduction was 1-10 mg S/l/day . Total numbers of bacteria in sediments varied from 0,5 to 5 .10 9 cells/cm 3 of wet mud . Chemical analyses of the carbon, nitrogen and phosphorus were also made . The possible influence of pollution on the sulphur cycle in these lakes is discussed .

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The profundal macroinvertebrates, particularly the oligochaetes, of Lake Ledro (Trento, Italy), that has recently undergone eutrophication, were studied. A statistical approach of random sampling was used to study the distribution and abundance of the oligochaete species. The optimum sample number