Macroinvertebrate communities in mine-water affected streams of Tisza valley

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Article Title:	Macroinvertebrate communities in mine-water affected streams of Tisza valley
Authors:	Dénes Gór, István Gyulai, Csaba Deák, Gyula Lakatos
Affiliation:	Department of Applied Ecology, University of Debrecen, Hungary Trans-Tisza Environmental Region, Nature Protection and Water Inspectorate, Debrecen, Hungary
Abstract:	We selected two mine affected stream, one is the Toka stream near Gyöngyösoroszi, and the other is Baláta stream near Recsk for our study. We selected four sampling sites in Toka stream and two sampling sites in recultivated area of Baláta stream. On site we measured the depth and the transparency, the temperature, the pH, the dissolved oxygen and the saturated oxygen of water, as well as we collected macroinvertebrates. In laboratory further measures (nitrite, nitrate, ammonia, CODaMn, ortho-phosphate, sulphate, sulphide, chloride, suspended solids and concentration of elements) were carried out. The aim of our study was to determine that the phisico-chemical parameters of streams how effect the composition and occurrence of macroinvertebrates and the impacts of the deposited mine tailing pile and to prove the effects of recultivation organisms of Baláta stream. Last years the recovery of the landscape and the habitat has been started in these mine affected areas of Gyöngyösoroszi. Our researches can found the future studies and the long term monitoring, which intend to estimate the success of recultivation.
Keywords:	stream, mine, macroinvertebrates
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*Correspondence:	Denes Gor., University of Debrecen, faculty of Natural Sciences, Department of Applied Ecology, 4032 Debrecen, Egyetem tér 1., Hungary, Tel. +36 52 512-900/22606, e-mail:gorden@freemail.hu