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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kartushinsky Alexei V.
Заглавие : Numerical modeling of the hydrophysical influence effects on the phytoplankton distribution
Место публикации : Mathematical Biology and Bioinformatics. - 2012. - Vol. 7, Is. 1. - С. 112-124. - ISSN 19946538 (ISSN)
Ключевые слова (''Своб.индексиров.''): aquatic ecosystem--biogenic element--chlorophyll--hydrophysical processes--inhomogeneity--numerical model--phytoplankton--rainfall--turbulent diffusion--upwelling--variability
Аннотация: The paper describes simulating results of the phytoplankton vertical distribution in the aquatic ecosystems based on one-dimensional numerical model. The model is used to calculate the dynamics of the temperature, salt, limiting nutrient and phytoplankton biomass. The work shows some temporal variability of phytoplankton distribution in the surface layer of salt and freshwater lake ecosystems under the impact of hydrophysical processes. These results can be used for the satellite date interpretation.
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vinogradov M.E., Gitelzon I.I., Sorokin Yu.I.
Заглавие : The vertical structure of a pelagic community in the tropical ocean
Место публикации : Marine Biology. - 1970. - Vol. 6, Is. 3. - С. 187-194. - ISSN 00253162 (ISSN) , DOI 10.1007/BF00347226
Аннотация: The vertical structure of the ecosystem in the euphotic zone of the western Equatorial Pacific has been studied. The studies were based on a continuous sounding of the bioluminescence field, with simultaneous, vertically aimed sampling made with the aid of a 5l water bottle and plankton nets. The bioluminescence field has a two-maxima structure with a more pronounced and permanent lower maximum found in the oligotrophic regions as deep as 60 to 100 m. In the narrow (10 m) layer of maximum bioluminescence, the concentration of zooplankton, as well as the concentration, activity and production of bacteria and phytoplankton, are several times higher than those in immediately adjacent waters at greater or lesser depth. At the same time, the concentration of nutrient salts in that layer diminishes sharply and approaches zero in the overlying water. Analysis of the data obtained shows that the production processes above the lower maximum layer are dependent not only on the turbulent influx of nutrient salts from the underlying layers, but also on the horizontal supply from the zone of upwelling. A pelagic community, in its different time aspects from the moment of water ascending until its sinking in the convergence zone, is suggested as a common system for modelling. В© 1970 Springer-Verlag.
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