Using Biological Methods to Determine Pollution Sources of the Vilnia River
نویسندگان
چکیده
the objective of the study was to investigate pollution sources in the Vilnia river and evaluate the toxicity of sewage, contamination of the Vilnia river water and bottom sediments, using a complex of biological methods. toxicity was assessed by use of various indices of test-organisms: seed germination and root growth in Lepidium sativum l., and mortality and physiological indices in early ontogenesis (embryos and larvae) of Oncorhynchus mykiss l. Changes in biological indices of Lepidium sativum l. and embryos and larvae of Oncorhynchus mykiss l. demonstrated that sewage of an identified point of the pollution source and the water of the Vilnia river 300 m downstream from the pollution source, bottom sediments of the Vilnia river nearby the pollution source and 300 m downstream from the pollution source could be defined as toxic.
منابع مشابه
Case study Malaysia: Spatial water quality assessment of Juru, Kuantan and Johor River Basins using environmetric techniques
This study investigates spatial water quality assessment of selected river basins in the three different states in Malaysia. Environmetric techniques namely, cluster analysis (CA), principal component analysis (PCA), and discriminant analysis (DA), were applied to study the spatial variations of the most significant water quality variables in order to determine the origin of pollution sources ...
متن کاملWater Quality Trading Using Tradable Permit in Biodiversity of River and Assessment of Efficiency of Expense
Background & Aims of the Study: Due to one-way flow of water in rivers Guilan, pollution trade theory and the system of Ratio-Trade (TRS) and Streeter - Phelps equation has been used. This system, with a view of the river self- purification and how the distribution and transport of pollutants, determined Ratio-Trade system (TRS) between the units and using this method offers optimal pat...
متن کاملBiological index and pollution assessment of Damghanroud river in the Semnan province
Fresh Water Rivers are one of the most important aquatic ecosystems in arid and semi-arid regions of Iran in point of biodiversity and drinking water views. Damghanroud River is one of these rivers at Semnan province that during past years has been threatened by drought and anthropogenic pollutions. This river supplies some parts of drinking water of Damghan city and some vicinity villages. The...
متن کاملAssessment of Ecological Hazard of Heavy Metals (Cr, Zn, Cu, Pb) in Surface Sediments of The Bashar River, Yasouj, Iran
Background & Aims of the Study: Heavy metals pollution in aquatic ecosystems threats living organisms' health and environment. Hence, the present study aims to assess concentration of lead, chromium, copper, zinc and their ecological risk in the surface sediments of the Bashar River during the summer and winter seasons. Materials & Methods: This is a field study; sampling of...
متن کاملIdentifying Critical Sources and Evaluate the Best Management Practices to Control Nutrient Load of the Dez River Basin Using the SWAT Model
Using the best management strategies (BMPs) is a useful way to control pollutions at the watershed outlets, which, of course, requires spending costs. Prioritizing these strategies (especially in areas with scarce resources) will greatly contribute to the efficiency and adequacy of these methods in terms of reducing pollution and their application in critical areas. In this research, the SWA...
متن کامل