Dissolved Organic Matter in Lacustrine Ecosystems: Energy by D. W. Schindler, S. E. Bayley, P. J. Curtis, B. R. Parker,

By D. W. Schindler, S. E. Bayley, P. J. Curtis, B. R. Parker, M. P. Stainton, C. A. Kelly (auth.), K. Salonen, T. Kairesalo, R. I. Jones (eds.)

Concentrations of dissolved natural topic (DOM) in lakes are usually an order of importance more than concentrations of particulate natural topic; however, the biogeochemical research of DOM is defined in just a number of textbooks on limnology (most completely by means of Wetzel). The orgins of dissolved natural components are principally photosynthetic; DOM is both autochthonously synthesized by way of littoral and pelagic plant life via secretions and autolysis of mobile contents, or allochthonously generated in terrestrial structures of the drainage basin, composing principally of humic elements refractory to swift microbial degradation. The position of DOM in lacustrine ecosystems, as strength resource and process regulator, in spite of the fact that, continues to be poorly identified.
the purpose of this publication is: (1) to provide state of the art studies of the position of dissolved autochthonous and allochthonous natural topic in pelagial and littoral zones; and (2) to concentration awareness on poorly understood yet severe issues and accordingly to supply course for destiny examine task.

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Aerial photographs (scale 1:10000) were used to estimate pond surfaces by an image analyzer (SKYE SI 700) connected to a 1512 Amstrad Pc. 45 200 Results The rainfall was unusually high during the study (Fig. 1): the sum (658 mm) of autumn and winter rain exceeded the yearly average value (620 mm). 53% of all the rain fell within twenty days (N 0vember, 23rd to December, 8th). This brought about the filling of the ponds that had remained dry since late summer (Fig. 2). Until flooding, the groundwater table has been below the surface.

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