Кафедра екології та біологічної освіти

Постійне посилання зібрання

https://elar.khmnu.edu.ua/handle/123456789/557

Переглянути

Перегляд Кафедра екології та біологічної освіти за Ключові слова "504.054"

Зараз показуємо 1 - 2 з 2
  • Документ
    Hydrochemical and toxicological composition in technogenic lakes of Male Polissya in Ukraine
    (2013) Mironova, Natalia
    The article presents the research results of hydrochemical indicators and assessment phytotoxic conditions (heavy metals content) in inactive water-filled sandpit (technogenic lakes) in the area of Male Polissya of Ukraine. Determined that these new man-made elements hydrographic network of have allowable values hydrochemical parameters and heavy metals in water and pit-bottom sediments, therefore suitable for recreational use.
  • Документ
    Phytomeliorative influence of the macrophytes of different ecological groups over the oxygene regime in the technogenic lakes of the Small Polissya of Ukraine
    (2013) Mironova, Natalia; Kalda, G.S.; Lishchuk, О.І.
    The article presents the results of determining the characteristics of the oxygen regime in the macrophytes thickets of different ecological groups: of submerged (Cerat ophyllum demersum L.), floating (Potamogeton natans L., Nuphar lutea (L). Smith.) and air-water (Phragmites australis (Cav. ) Trin. ex Steud.) in technogenic lakes of Small Polissya of Ukraine. Physiographic area of Small Polissya located mainly in the western regions of Ukraine, and a small part – in Poland, and differs plain relief, high humidification, closeness of groundwater from surface. Technogenic lakes were formed by sand mining using dredges as result underwater extraction in aqueous career. They have an age of between 30 and 60 years, can be flow-through and non-flow-through. Soluble oxygen, temperature and oxygen saturation were measured by the device Oxi 330i/SET. The largest concentration of oxygen is determined in areas of lakes occupied by submerged vegetation. In thickets of air-water and floating vegetation the oxygen content is almost identical and with the depth it gradually decreases. In the thickets macrophytes the oxygen regime is affected by the degree of flow-through and age of lakes. In the «younger» non-flowing lakes of 30-35 years of age the oxygen concentration is the largest, the lowest oxygen concentration is in the old lakes. According to the determination of dissolved oxygen at different depths and in the bottom layer we proved an active development of eutrophication processes in non-flowing technogenic lakes aged about 60 years.