The ecological state of the Upper Tisa and the Transilvenien-tributaries of the Tisa River based on caracteristics of the physico-chemical parametrers, the flora and fauna Sárkány-Kiss Endre, Fodorpataki László, Macalik Kunigunda, Telcean Ilie, Bálint Miklós, Braun Mihály, Papp Judit, Hamar József Apáthy István Egyesület, Cluj / Kolozsvár, Romania TRANS-TISA NETWORK, Debrecen, 2012.03.22-23.
Populated (Unionidae) Polluted
Bodrog Tisza Rivers marked were Surveyed between 1991-1995 Additional samplings at several sites during 1998-2011 More information about these surveys and the results at http://folyok.adatbank.transindex.ro/ Barcău C. Repede C. Negru Crişul Alb Someş Mureş
Metal content of the sediment of Tisza River in February 2002. Site 6 is dowstream to the inflow of Szamos river. A tiszai üledék fémtartalma 2002 februárjában mg/kg szárazanyag 18 16 14 12 10 8 6 4 2 0 Pb Cr Cu Pb 1 2 3 4 5 6 7 8 9 10 Cr Mintavételi helyek
Someş / Szamos
Mine dump upstream Baia Mare, Someş Basin
Mine dump upstream Baia Mare, Someş Basin
Sampling sites on the Someş River SZ 1-5 upstream and SZ 6-10 dowstream Satu Mare Baia Mare
Dynamics of heavy metal content in the water of the Someş and Lăpuş Rivers during the four seasons of the years (winter, spring, summer, autumn). A Szamos és a Lápos üledékének Pb - tartalmának évi dinamikája 2002-ben (mg/kg) 600 500 400 300 200 100 0 Sz.I. Sz.II. Sz.III. Sz.IV. Sz.V. L. Sz.VI. Sz.VII. Sz.VIII. Sz.IX. Sz.X. Pb tél Pb tavasz Pb nyár Pb ősz
Dynamics of Cu content in the water of the Someş and Lăpuş Rivers during the four seasons of the years (winter, spring, summer, autumn). A Szamos és a Lápos üledékének Cu - tartalmának évi dinamikája 2002-ben (mg/kg) 600 500 400 300 200 100 0 Sz.I. Sz.II. Sz.III. Sz.IV. Sz.V. L. Sz.VI. Sz.VII. Sz.VIII. Sz.IX. Sz.X. Cu tél Cu tavasz Cu nyár Cu ősz
Laboratóriumi körülmények között, standardizált ökotoxikológiai tesztekkel vizsgálni lehet, hogy milyen hatással van az egyes szennyezett folyószakaszok vízminősége a vízi élettérben fejlődő növényi szervezetek (pl. békalencse) sajátos életműködési paramétereire (pl. szaporodási rátára, bioproduktivitásra, fotoszintetikus hatásfokra) Influence of water quality on reproduction of duckweed (Lemna minor L.) grown in water samples from: 1WNIS10 the Nistru creek in the Nistru village; 3WSEB10 Lăpuşna Mare (Valea Roşie) creek spring; 4WSEB10 in the first inflowing acid mine drainage (AMD); 5WSEB10 in the main inflowing AMD; 6WSEB10 in the Valea Roşie creek downstream the purification station; 7WSEB10 in the Baita creek downstream the confluence with the Valea Rosie creek
A begyűjtött vízmintákban fejlődő növényi tesztszervezetek (pl. mikroalgák) számos életműködési indikátora (pl. az indukált klorofill-fluoreszcencia fotoszintetikus paraméterei) és biokémiai markere (pl. antioxidáns védőanyagok szintváltozása) érzékenyen jelzi a vízminőség változásának hatásait az élő szervezetekre 0.7 0.6 ΔF/Fm' ratio 0.5 0.4 0.3 0.2 0.1 0 control 0.1 mm Cd 0.1 mm Cu 0.1 mm Ni 0.1 mm DCMU 0.1 mm MV Potential quantum yield efficiency of photochemical energy conversion in photosystem II in the presence of different waterpolluting agents (e.g. heavy metals, pesticides), as determined with parameters of induced chlorophyll fluorescence (n=5, means ± SE)
Decreasing Chironomidae density and increasing Pb concentrations in water samples (Spearman rank-correlation, r = -0.87, p = 0.05) of the Someş River upstream (S.III, S.IV) and dowstream (S.V) to Lăpuş river. Lines represent trends, based on linear regression.
Heavy metals accumulation in Unio crassus gills after 3 weeks of exposure to water of the Someş river dowstream to the influence of Lăpuş river
Crişul Repede River Sebes-Körös
Crişul Repede River Sebes-Körös
Mureş / Maros River
The use of river resources may directly affect the macrozoobenthos. The riverbed was deepened by 1.5-2 m at several areas due to the unregulated gravel extraction. As a result, freatic water freely runs into the rivers. Riverbed gravel extraction is wide-spread on the Transylvanian rivers.
Changes in the concentration of nitrites and nitrates along the Mureş River. Left Y axis: nitrites (mg/l), right Y axis: nitrates (mg/l)
.Pb concentrations in the Mureş River; grey = in 1991, black = in 2000, 4 = upstream Târnava, 5 = upstream Arieş
Mussels were absent from a 420 km long section of the Mureş Many parts of the river were recolonized as major polluters were gradually shut down after 1990 Naturally uninhabitable areas Synanodonta Anodonta Unio 2000 Sárkány-Kiss, A. (1997): The present-day situation of the Unionidae (Mollusca, Bivalvia) in the Transylvanian tributaries of the Tisa river (Romania). Trav. Mus. Hist. Nat. "Grigore Antipa" 37: 213-224. updated with unpublished results
Arieş / Aranyos River
Site 6 is downstream to the inflow of Rosia Montana creek The relative abundance of the main taxonomic groups from the macrozoobenthos of the Aries River at different sampling sites ( a dip other Diptera, ch Chironomidae, tr Trichoptera, pl Plecoptera, ep Ephemeroptera, ol Oligochaeta).
Dynamics of taxa and cells counts of algae along the Mureş River
Abundance of Rotatoria in the Mureş River
Additional resources: http://folyok.adatbank.transindex.ro/
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