Emil Racovita Institute of Speleology of the Romanian Academy

Bucharest, Romania

Emil Racovita Institute of Speleology of the Romanian Academy

Bucharest, Romania
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Tudorache A.,Emil Racovita Institute of Speleology of the Romanian Academy | Marin C.,Emil Racovita Institute of Speleology of the Romanian Academy
E3S Web of Conferences | Year: 2013

A study of some heavy metals (Cu, Zn and Cr) concentrations in natural groundwater has been conducted, by considering samples collected from the area located in the neighbourhood of Saligny village (Cernavodǎ, Romania). Atomic absorption spectrometry methods with thermal and electrothermal atomization has been developed, tested and used for some heavy metals content determination. The results show various concentrations of Cu, Zn and Cr in groundwater samples. © Owned by the authors, published by EDP Sciences, 2013.


David I.G.,University of Bucharest | Matache M.L.,University of Bucharest | Tudorache A.,Emil Racovita Institute of Speleology of the Romanian Academy | Chisamera G.,Grigore Antipa National Museum of Natural History | And 2 more authors.
Environmental Engineering and Management Journal | Year: 2012

Pollutants transfer via the food chain was investigated in a wetland ecosystem from the Lower Prut Floodplain Natural Park in Romania. Trace elements (Cd, Cu, Pb and Zn) were determined by Inductively Coupled Plasma - Optical Emission Spectrometry (ICP-OES) from samples belonging to primary producers and primary and secondary consumers, and also from water and sediments samples. Non-essential trace elements as Cd and Pb exhibited low concentrations in molluscs and fish, but zinc had shown concentration up to 745.28 μg/g in Cyprinus carpio.


Marin C.,Emil Racovita Institute of Speleology of the Romanian Academy | Tudorache A.,Emil Racovita Institute of Speleology of the Romanian Academy | Tudorache A.,University of Bucharest | Moldovan O.T.,Emil Racovita Institute of Speleology of the Romanian Academy | Rajka G.,Emil Racovita Institute of Speleology of the Romanian Academy
Carpathian Journal of Earth and Environmental Sciences | Year: 2010

By directly assessing, through atomic absorption spectrometry (AAS), the heavy metals and the arsenic contents of natural water-flows that cross regions where large-scale mining activities are carried out, there are quite accurately estimated the corresponding amounts of contamination. The present paper describes the methodology which was employed in order to assess the contents of Mn, Fe, Cu and Zn, by means of flame-AAS, and the contents of Cr, Co, Ni, Cd, Al, Pb, Sb and As, by means of direct electrothermal-AAS. The analytical methods which had been developed have been further utilized in surveying the chemical composition of an almost 110 km long stream section of Arieş river, by considering water samples collected both from the surface flow, and from the adjoining hyporheic zone. The experimental activities managed to identify two distinct regimes, one that was relatively normal in terms of contaminants distribution and, in contrast, one episode of severe pollution. Through the adopted approach there was ascertained that also the hyporheic zone was contaminated with heavy metals carried by the stream Arieş, yet the corresponding concentration levels were significantly smaller, the latter circumstance outlining the role played by that zone in the processes of self-decontamination.


Bancila R.I.,Emil Racovita Institute of Speleology of the Romanian Academy | Bancila R.I.,Ovidius University | Plaiasu R.,Emil Racovita Institute of Speleology of the Romanian Academy | Plaiasu R.,Ovidius University | And 3 more authors.
Chelonian Conservation and Biology | Year: 2012

We studied plastron-shaped asymmetry of the Eurasian Spur-Thighed Tortoise, Testudo graeca ibera, as related to life stage, gender, and distribution. Our analyses of 523 individuals showed that fluctuating asymmetry (FA) in plastron shape varied with gender (males exhibited higher levels of FA than did females) and across populations, whereas life stage had no significant effect. Although we could not identify the potential sources of variation responsible for the observed patterns of developmental instability, our study shows the value of FA as a method for studies of developmental instability in turtles. © 2012 Chelonian Research Foundation.


Plaiasu R.,Emil Racovita Institute of Speleology of the Romanian Academy | Plaiasu R.,Ovidius University | Voros J.,Hungarian Natural History Museum | Bancila R.,Emil Racovita Institute of Speleology of the Romanian Academy | Bancila R.,Ovidius University
Acta Zoologica Academiae Scientiarum Hungaricae | Year: 2012

Hybridization can occur under natural conditions among well-differentiated species and may affect the developmental stability of hybrids. In the present study, we investigated the effect of interspecific hybridization between Bombina bombina and B. variegata on fluctuating asymmetry (FA) of forelimb, femur, tibia and foot. The hybrids did not show higher levels of FA compared to the parental populations for either investigated traits. This suggested that the effect of hybridization on FA in the analyzed traits is negligible or overwhelmed by other factors. A significantly increased FA was found in the B. bombina populations when compared to B. variegata, which can be attributed to low pressure of natural selection in these populations.


Cogalniceanu D.,Ovidius University | Bancila R.,Ovidius University | Bancila R.,Emil Racovita Institute of Speleology of the Romanian Academy | Plaiasu R.,Ovidius University | And 4 more authors.
Annales de Limnologie | Year: 2012

Alpine areas are extreme habitats that require special adaptations and involve major trade-offs in terms of life history. Amphibians have the ability to adapt both their life history and developmental traits to alpine environments. Temperate amphibians depend on the quality and availability of aquatic habitats for reproduction. We explored the aquatic habitat used by amphibians in the alpine area of Retezat Mountains, Southern Carpathians, Romania. We surveyed 40 aquatic habitats in a 380 ha area delimited by mountain crests and drained by a steep valley. Each aquatic habitat was characterized using 10 environmental variables. Only three amphibian species occur at elevations above 1900 m, the most widespread being the Common Frog Rana temporaria. The Common Frog showed preference for breeding aquatic habitats, the variables of importance being altitude, solar radiation, water chemistry and grazing. Higher elevation and lower solar radiation decreased frog occurrence, while the impact of grazing favored the use of water bodies. Acidification is eminent in the area with pH dropping below 5 in 20% of the water bodies. Overall, amphibian occurrence in alpine area can be partly explained by the characteristics of aquatic habitats. © 2012 EDP Sciences.


Povara I.,Emil Racovita Institute of Speleology of the Romanian Academy | Conovici M.,Geological Society of Romania | Munteanu C.-M.,Emil Racovita Institute of Speleology of the Romanian Academy | Marin C.,Emil Racovita Institute of Speleology of the Romanian Academy | Ionita E.D.,Water Analysis Laboratory
Carpathian Journal of Earth and Environmental Sciences | Year: 2015

The Cerna River catchment area is located in the south-western part of the Southern Carpathians, along the Cerna Miocene Graben, within which outcrop Cretaceous formations pertaining to either the Danubian Autochthonous or the Getic Nappe. Consequently, secondary structures characteristic to the extensional tectonics have resulted. These structures have been involved in the groundwater flow, leading to the high flow rates recorded for certain karst springs (Pişetori, Seven Cold Springs, Domogled) and to the low flow rates of several cross creeks. On the western slope of the valley, close to the master fault, the karst aquifer complex, developed within the Mesozoic limestone, is strongly influenced by thermal phenomena. Along the valley, on 25 km, to the south, towards the Băile Herculane area, 28 thermal sources (10 wells and 18 springs) have been identified. Structural and tectonic relationships between the deep-seated, brittle granitic bedrock and the limestone cover, capped by Cretaceous argillites, are very important for the dynamics of the thermo-mineral reservoir. There is a clear-cut distinction between the karst springs and the thermal sources, in terms of both hydrochemical facies, and dissolved minerals. The chemical analyses of the groundwater samples collected from the Cerna River catchment area outline clear hydrochemical differences between the karst springs and the thermo-mineral sources. In the karst groundwater, Ca2+ and HCO3 - (up to 200 mg/L) are the prevailing ions. The thermo-mineral water is of Na-Cl type; its mineral content exhibits a markedly increasing trend from the north to the south (from 170 to 8000 mg/L). There is an obvious correlation between Na+ and Cl- concentrations, indicating a mixing process between a common saline end-member and a less mineralized shallow water.


Levei E.,INCDO INOE 2000 Research Institute for Analytical Instrumentation | Senila M.,INCDO INOE 2000 Research Institute for Analytical Instrumentation | Miclean M.,INCDO INOE 2000 Research Institute for Analytical Instrumentation | Abraham B.,INCDO INOE 2000 Research Institute for Analytical Instrumentation | And 3 more authors.
Environmental Engineering and Management Journal | Year: 2011

Water quality in the Aries River catchment (NW Romania) in the vicinity of Rosia Poieni and Rosia Montana mining areas was investigated. This study included the determination of pH, EC, dissolved trace metals (Ni, Cu, Zn, Cd, Pb, Mn), major cations (Na, K, Ca, Mg, Fe), chloride, nitrate and sulfate concentration in waters sampled from the Aries River and its tributaries (Abrud River and Musca and Sesei rivulets) that drains the mining area. In the studied area, pollution derived primarily from nonferrous and precious metal mine tailings deposited near the water courses. Although high metals and sulfates concentrations were found in the Sesei and Musca rivulets, due to the low flow rate of these tributaries, in the Aries River significant increases were found only for Mn, Cu, Fe and sulfate while for the other metals a moderate increase was observed.

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