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Publications (17)
Forty-three surface sediment samples were collected in September 2019 from Tasaul Lake (Black Sea coast, Romania) to examine the metal distribution patterns, assess the level of metal contamination, and identify the pollutant sources. The determined mean metal concentrations were as follows: Al 49,772 mg/kg, Zn 84.40 mg/kg, Cr 83.70 mg/kg, V 76.45...
The Danube Delta was studied following the Geo-Eco-Mar expeditions in the summer and autumn of 2019 and 2020, respectively, from a sedimentological, faunal and environmental quality point of view. The grain size analyses of the sediments from the bed of the Chilia, Tulcea, Sulina, St. George Branches, as well as the meanders of the Dunărea Veche an...
Abstract: Main lithological components were determined in surface and core sediment samples collected in the Fortuna Lake to evaluate their concentration and spatial distribution. Fortuna Lake is one of the important freshwater lakes in the western part of the fluvial-delta plain, in terms of ecology, biodiversity, limnology, and hydrology. Like ma...
Mangalia area harbors in the western Black Sea a distinctive marine environment thriving under specific hydrochemical conditions, largely influenced by a significant number of sulphurous springs occurring in shallow marine waters. These springs led to the designation of the area as part of the Natura 2000 Marine Protected Area (MPA) network at Euro...
It is essential to determine the concentrations of metals/metalloids in marine sediments and their contamination status to develop appropriate pollution control strategies and/or improve existing ones. Spatial distribution of aluminum (Al) and some trace elements, i.e., arsenic (As), chromium (Cr), copper (Cu), mercury (Hg), nickel (Ni), lead (Pb),...
Several geochemical analyses (bulk parameters, particle size, loss on ignition, major, minor and trace elements) were performed on 51 recent sediment samples collected in May 2022 from Rosulet, Rosu and Puiu lakes which are located in the fluvio-marine delta plain of the Danube Delta, Romania. The aim of this study was to decipher the potential ori...
The quality and quantity of delta lakes� sediment depend on fluvial input and in-situ bio-geo-chemical processes. The present study investigates the quality of lacustrine sediments collected from two lakes - Tataru and Merhei, situated in different hydrodynamic environments within the Danube Delta, Romania, but both connected to fluvial input of wa...
![Fig. 4 Tectonics of Dobruja (after M. Visarion et al., 1988, fide [1])...](profile/Bogdan-Ispas/publication/347777951/figure/fig4/AS:1004488911515649@1616500227186/Tectonics-of-Dobruja-after-M-Visarion-et-al-1988-fide-1-The-transversal-fault_Q320.jpg)
Due to the change of the Paratethys’ marine regime with normal salinity to the brackish regime, the Moldavian Platform deposits of this time period are characterized by euryhaline microfaunal forms. Foraminifera species Lobatula lobatula (W. et J.) (Cibicides lobatulus W. et J.), Cycloforina karreri ovata (Serova) (Quinqueloculina karreri ovata Ser...
The purpose of this paper is the biozonation of the Triassic klippes belonging to the Transylvanian Nappes from Rarau Syncline based on bivalves. The paleontological and biostratigraphic study demonstrated that Fagețel klippe is Upper Ladinian age, because of the presence of Daonella (Loemmelella) loemmeli species and that in the Dealul Cailor klip...
