Discharge of Biogenic Substances with River Runoff in Selenga
Basin

Z. I. Khazheeva^a and A. M. Plyusnin^b

^a Baikal Institute for Nature Management, Siberian Branch, Russian Academy of Sciences,
ul. Sakh"yanovoi 6, Ulan-Ude, 670047 Russia

^b Geological Institute, Siberian Branch, Russian Academy of Sciences, ul. Sakh’’yanovoi 6a, Ulan-Ude, 670047 Russia

E-mail: plyusnin@gin.bcsnet.ru, zkhazh@binm.bscnet.ru

Received October 21, 2010

Abstract—Averaged many-year measurement data on the concentrations of mineral forms of biogenic ele-
ments are analyzed, and their total concentrations in the rivers of Selenga, Chikoi, Khilok, Uda, Dzhida, and
Temnik are evaluated. The monthly variations of the concentrations of major biogenic substances are charac-
terized, and their ratios within a year are determined. Characteristics of river water runoff and biogenic sub-
stance concentrations are used to evaluate their within-year discharge by rivers. Characteristic variations in the
ratios between the total and mineral forms of biogenic elements discharged by rivers have been revealed. It is
established that the share of mineral components in the total input into the Selenga delta N_tot and P_tot are 82 and
22%, respectively.

Keywords: within-year and year-to-year variations in the mineral forms of nitrogen compounds, mineral and
total phosphorus, biogenic element discharge by river runoff in Selenga basin

DOI: 10.1134/S0097807812040070

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