Impact of weather variability on spatial and seasonal dynamics of dissolved and suspended nutrients in water column of meromictic Lake Shira

Тип публикации: статья из журнала

Год издания: 2014

Идентификатор DOI: 10.1134/S199542551404012X

Ключевые слова: meromictic lake, weather, thermal stratification, seston, nutrients, stoichiometric ratios, meromictic lake, nutrients, seston, stoichiometric ratios, thermal stratification, weather, air temperature, air-water interaction, carbon, climate variation, concentration (composition), meromictic lake, nitrogen, nutrient dynamics, phosphorus, Redfield ratio, seasonality, seston, spatial analysis, thermocline, water column, Khakassia, Lake Shira, Russian Federation

Аннотация: Depths of thermocline and the redox zone, concentrations of dissolved and suspended carbon, and nitrogen and phosphorus in seston were measured in the pelagial of the saline meromictic Lake Shira (southern Siberia) in different years (2007-2011); the relationship of the values for those parameters with air-temperature variations was assessed. Positive correlations between both air temperatures in the previous year and the depth of the redox zone in winter and air temperature in April and the thermocline depth in summer were revealed. In the mixolimnion, the ratio of total nitrogen to total phosphorus almost always exceeded the Redfield ratio (16: 1); seston deficiency both in nitrogen and phosphorus was monitored in different seasons and at various depths. The amount of seston in the mixolimnion in summer almost doubled the amount of seston in winter and was directly related with the depth of the thermocline. In the monimolimnion, seston was rich in nitrogen and phosphorus. The amount of seston in the monimolimnion varied in different years and depended both on the air temperature in the previous year and the size of the zone.

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Издание

Журнал: CONTEMPORARY PROBLEMS OF ECOLOGY

Выпуск журнала: Vol. 7, Is. 4

Номера страниц: 384-396

ISSN журнала: 19954255

Место издания: NEW YORK

Издатель: MAIK NAUKA/INTERPERIODICA/SPRINGER

Авторы

  • Zadereev E.S. (Siberian Federal University)
  • Tolomeev A.P. (Institute of Biophysics, Siberian Branch, Russian Academy of Sciences)
  • Drobotov A.V. (Institute of Biophysics, Siberian Branch, Russian Academy of Sciences)
  • Kolmakova A.A. (Institute of Biophysics, Siberian Branch, Russian Academy of Sciences)

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