There are considered the floodplain geocomplexes in the middle and lower reaches of the Protva river and their peculiarities related to the influence of differences in the history of development and hydrological regime of the river. The biological
productivity and circulation of chemical elements, composition of the humus of the soils and silt deposits, and the anthropogenic transformations of the flood-plain geocomplexes and the prospects of their economic use are characterized.
biological zonation has led some authors to suggest that anchor ice does not form to depths of greater than 33 m, yet in Antarctica there appear to be no physical reasons for such a limit given the production of supercooled water to substantial depths
associated with ice shelves. Future work should focus on the potential extent of anchor ice production and identify the key oceanographic, glaciological and meteorological conditions conducive to its formation.
The AA. report a rate of production for 14CO in calcite. They use cryogenic methods to separate in situ cosmogenic 14CO from in situ cosmogenic 14CO2, or from biological 14C present as organic matter or as CaCO3. With the rate of production
Speleothem development and biological activity in granite cavities
chimique et minéralogique et leurs morphologies respectives. Ils montrent que l'activité des micro-organismes via la production de composés métaboliques a un rôle décisif dans l'altération de la roche, et que postérieurement ils agissent également comme des
The role of biological weathering in periglacial areas : a study of weathering rinds in south Iceland
Experiments using fungi strains isolated from basaltic boulders allow one to decipher biological weathering. A historical approach using heterochronous moraines provides the opportunity to follow the life of weathering rinds and helps to build
The genesis of supergene products in the sedimentary Mn deposits on Groote Eylandt is the subject of detailed investigations. Among the many geochemical and biological mechanisms which may have influenced the mobilization or precipitation of ores
The article deals with the results of the investigation of the biologicalproductivity of the cotton agrophytocenoses under different doses of mineral fertilizers. The functioning of cotton has energetically been estimated under the same conditions
Biological indicator ; Copper ; European part of Russia ; Factory ; Heavy metals ; Hydrochemistry ; Metallurgy ; Murmansk ; Nickel ; Polluted water ; Pollution ; Toxic product ; Water purification
Algae ; Biological indicator ; Comparative study ; Drinking water ; Heavy metals ; Hydrochemistry ; Pollution ; Toxic product ; Water ; Water pollution ; Water quality