Open AccessApplication of an Environmental Norm Setting Method for Assessment of a Aquatic Ecosystem Status (the Ild River Mouth Area and Rybinsk Reservoir as Study Cases).
Author(s) -
L A Kuchay,
N. G. Otyukova
Publication year - 2016
Publication title -
vodnoe hozâjstvo rossii: problemy, tehnologii, upravlenie/vodnoe hozâjstvo rossii : problemy, tehnologii, upravlenie
Language(s) - English
Resource type - Journals
eISSN - 2686-8253
pISSN - 1999-4508
DOI - 10.35567/1999-4508-2016-6-2
Subject(s) - tributary , water quality , drainage basin , environmental science , aquatic ecosystem , hydrology (agriculture) , ecosystem , biochemical oxygen demand , alkalinity , environmental chemistry , ecology , geography , chemistry , environmental engineering , chemical oxygen demand , biology , geology , wastewater , cartography , geotechnical engineering , organic chemistry
The presented work has been done within the framework of hydro/ecological studying of the Volga River basin small rivers. For the first time in the many-year history of the Rybinsk reservoir studies the objective was to assess the tributaries (that formed the water quality) status. Observation date (2006–2010) of hydro/chemical and hydro/physical components of one of the tributaries, the Ild River, free flow, three moth zones and the area nearest to the river emptying site, Koprino of the Volga Reach have been al analyzed in order to assess these waters quality.The article has used Harrington desirability function which coordinates the system (or water quality) ecological status conventional points in order to assess the ecosystems status meeting specific values of an ecological parameter. Desirability functions have been plotted for iron (total Fe, dissolved Fe, mg/l), oxygen (О2, mg/l), permanganate oxidizability (PO, mg/l), chemical and biochemical oxygen demand (COD and BOD5, mg/l), salt composition macro/components: – magnesium (Mg, mg/l), calcium (Ca, mg/l), sulfates (SO4, mg/l), potassium (K, mg/l), chorine (Cl, mg/l), sodium (Na, mg/l), alkalinity (НСО3, mg/l), as well as color (grade) and suspended matter (mg/l). With the help of these functions the tables of the normal components values have been formed. The component value intervals (norms) have been obtained for the Harrington scale linguistic assessment (from “very good” to “very bad”) that can serve an expert assessment of the tributary under study water quality.