TY - JOUR AU - Florescu, G AU - Hutchinson, S M AU - Kern, Zoltán AU - Mindrescu, M AU - Cristea, I A AU - Mihaila, D AU - Feurdean, A TI - Last 1000 years of environmental history in Southern Bucovina, Romania; a high resolution multi-proxy lacustrine archive JF - PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY J2 - PALAEOGEOGR PALAEOCL VL - 473 PY - 2017 SP - 26 EP - 40 PG - 15 SN - 0031-0182 DO - 10.1016/j.palaeo.2017.01.047 UR - https://m2.mtmt.hu/api/publication/3181491 ID - 3181491 N1 - Megjegyzés-26514492 N1 Funding details: 30015/577, DBU, Deutsche Bundesstiftung Umwelt N1 Funding text: GF acknowledges support through ‘Sustainable performance in doctoral and post-doctoral research PERFORM’ (Contract no. POSDRU/159/1.5/S/138963) and the Deutsche Bundesstiftung Umwelt (30015/577); MM and GF acknowledge a grant of the Romanian National Authority for Scientific Research, CNCS – UEFISCDI (project number PN-II-RU-TE-2012-3-0386); ZK expresses thanks for support from the “Lendület” program of the Hungarian Academy of Sciences (LP2012-27/2012). We thank Aritina Haliuc and Andrei Zamosteanu for their help during fieldwork and sediment subsampling. Anca Semeniuc is thanked for guidance in plant macrofossil identification. We also thank Bob O'Hara for assistance with our statistical analysis. The authors appreciate the useful comments of the reviewers. Megjegyzés-26514509 N1 Funding details: 30015/577, DBU, Deutsche Bundesstiftung Umwelt N1 Funding text: GF acknowledges support through ‘Sustainable performance in doctoral and post-doctoral research PERFORM’ (Contract no. POSDRU/159/1.5/S/138963) and the Deutsche Bundesstiftung Umwelt (30015/577); MM and GF acknowledge a grant of the Romanian National Authority for Scientific Research, CNCS – UEFISCDI (project number PN-II-RU-TE-2012-3-0386); ZK expresses thanks for support from the “Lendület” program of the Hungarian Academy of Sciences (LP2012-27/2012). We thank Aritina Haliuc and Andrei Zamosteanu for their help during fieldwork and sediment subsampling. Anca Semeniuc is thanked for guidance in plant macrofossil identification. We also thank Bob O'Hara for assistance with our statistical analysis. The authors appreciate the useful comments of the reviewers. Stefan cel Mare University, Department of Geography, 13 Universităţii Street, Suceava, 720229, Romania School of Environment and Life Sciences, University of Salford, Salford, Greater Manchester, M5 4WT, United Kingdom Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences MTA, Budaörsi street 45, Budapest, H-1112, Hungary Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, Krakow, 31-342, Poland Babeş-Bolyai University, Department of Geology, 1 M. Kogalniceanu str., Cluj-Napoca, 40084, Romania Biodiversity and Climate Research Centre BiK-F, 25 Senckenberganlage, Frankfurt am Main, D-60325, Germany Export Date: 15 October 2019 CODEN: PPPYA Correspondence Address: Florescu, G.; Stefan cel Mare University, Department of Geography, 13 Universităţii Street, Romania; email: gabriella.florescu@yahoo.com Stefan cel Mare University, Department of Geography, 13 Universităţii Street, Suceava, 720229, Romania School of Environment and Life Sciences, University of Salford, Salford, Greater Manchester, M5 4WT, United Kingdom Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences MTA, Budaörsi street 45, Budapest, H-1112, Hungary Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, Krakow, 31-342, Poland Babeş-Bolyai University, Department of Geology, 1 M. Kogalniceanu str., Cluj-Napoca, 40084, Romania Biodiversity and Climate Research Centre BiK-F, 25 Senckenberganlage, Frankfurt am Main, D-60325, Germany Export Date: 22 February 2021 CODEN: PPPYA Correspondence Address: Florescu, G.; Stefan cel Mare University, 13 Universităţii Street, Romania; email: gabriella.florescu@yahoo.com Stefan cel Mare University, Department of Geography, 13 Universităţii Street, Suceava, 720229, Romania School of Environment and Life Sciences, University of Salford, Salford, Greater Manchester, M5 4WT, United Kingdom Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences MTA, Budaörsi street 45, Budapest, H-1112, Hungary Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, Krakow, 31-342, Poland Babeş-Bolyai University, Department of Geology, 1 M. Kogalniceanu str., Cluj-Napoca, 40084, Romania Biodiversity and Climate Research Centre BiK-F, 25 Senckenberganlage, Frankfurt am Main, D-60325, Germany Export Date: 3 May 2021 CODEN: PPPYA Correspondence Address: Florescu, G.; Stefan cel Mare University, 13 Universităţii Street, Romania; email: gabriella.florescu@yahoo.com LA - English DB - MTMT ER - TY - JOUR AU - Begy, Róbert-Csaba AU - Preoteasa, L AU - Timar-Gabor, A AU - Mihăiescu, R AU - Tănăselia, C AU - Kelemen, S AU - Simon, H TI - Sediment dynamics and heavy metal pollution history of the Cruhlig Lake (Danube Delta, Romania) JF - JOURNAL OF ENVIRONMENTAL RADIOACTIVITY J2 - J ENVIRON RADIOACTIV VL - 153 PY - 2016 SP - 167 EP - 175 PG - 9 SN - 0265-931X DO - 10.1016/j.jenvrad.2015.12.020 UR - https://m2.mtmt.hu/api/publication/2999012 ID - 2999012 AB - This is the first study reporting recent sedimentation rates data (e.g. the past 120-150 years) for the Cruhlig Lake situated in the Danube Delta. The aim of this study is to analyse the recent sedimentation rates using the 210Pb dating method and identifying the heavy metal pollutants and their variability in time. Five sediment cores were taken with a gravity corer and - after drying the sliced samples-physical parameters, organic material and inorganic carbon content were determined. The total 210Pb content was measured via 210Po by alpha spectrometry, while supported 210Pb was measured by 226Ra (trough short life 222Rn daughters) with HPGe detectors. Heavy metals were determined by ICP-MS; from the 64 measured elements, only exceeding values of Al, As, Cd, Co, Cs, Cr, Cu, Fe, Hg, K, Li, Mg, Mn, Ni, Pb and Zn are discussed. After applying the CRS model, ages and sedimentation rates were calculated. The average sedimentation rate of the Cruhlig Lake is 0.21 ± 0.02 g/cm2y, Minimum values (0.05 ± 0.003 g/cm2y) are registered along the eastern shoreline of the lake before 1913, while maximum values are recorded due to the flooding in 2006 in the western side (1.34 ± 0.12 g/cm2y). Recent sedimentation rates divide the lake into three areas: the secluded eastern near shore part (0.63 ± 0.07 g/cm2y), the centre of the lake (0.92 ± 0.05 g/cm2y) and the dynamic western area, where most sediment transport takes place (1.13 ± 0.01 g/cm2y). The sedimentation pattern proves this lake to be very sensitive to fluvial discharge fluctuations. The building of the Iron Gate dams (1972 and 1985) had a negative impact on the sedimentation decreasing it with 58.74%, while after 1989 these values grew 2.25 times. The lake received a quantity of sediment rich in heavy metals in 1992 ± 3 y, which settled mostly on the eastern part. Values for Cd, Co, Cr, Hg, Pb and Zn are up to five times higher in 1980 ± 5 y in the eastern part of the lake, while Cd, Co, Cr and Ni are twice as high as the values measured for the marine substrate. Values of As show increasing of up to 150% in 2006 ± 2 y throughout the whole surface of the lake. © 2015 Elsevier Ltd. LA - English DB - MTMT ER - TY - JOUR AU - Begy, RC AU - Kovács, Tibor AU - Veres, D AU - Simon, H TI - Atmospheric flux, transport and mass balance of Pb-210 and Cs-137 radiotracers in different regions of Romania JF - APPLIED RADIATION AND ISOTOPES J2 - APPL RADIAT ISOTOPES VL - 111 PY - 2016 SP - 31 EP - 39 PG - 9 SN - 0969-8043 DO - 10.1016/j.apradiso.2016.02.008 UR - https://m2.mtmt.hu/api/publication/3095934 ID - 3095934 AB - This study focuses on the determination of Pb-210 and Cs-137 fluxes from different areas in Transylvania, Romania and on the determination of transport and mass balance within the lacustrine system of Red Lake. In order to achieve this, samples were taken from six different locations (Bihor County area, Ighiel area, Red Lake area, Mluha Peatbog, Mohos Peatbog and Zanoaga Rosie Peat bog in the Semenic Mountains) throughout Romania, these being compared to the values of the Danube Delta area. The activity concentrations of the soil samples were measured by gamma spectrometry (HPGe detector) for both (210)Pbtoni, Pb-210(sup) (Ra-226) and Cs-137, while peat samples were measured by both alpha ((210)po) spectrometry (PIPS detectors) as well. The mean value for the Pb-210 flux was measured in the Danube Delta region (42 +/- 8 Bq m(-2) yr(-1)), while the highest was measured in the Semenic Peatbog (227 +/- 54 Bq m(-2) yr(-1)); the average being 132 +/- 8 Bq m(-2) yr(-1). In case of Cs-137 the mean was 298 +/- Bq m(-2) yr(-1), maximum being 1683 +/- 15 Bq m(-2) yr(-1) in case of Ighiel area and minimum being 32 +/- Bq m(-2) yr(-1) in the Danube Delta region. In case of the Red Lake, from the total inventory of 410 +/- 23 Bq m(-2) yr(-1) in the sediments, the loss by outflows is 100 +/- 12 Bq m(-2) yr(-1), the catchment to lake transfer factor being 0.84%. (C) 2016 Elsevier Ltd. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Hutchinson, SM AU - Akinyemi, FO AU - Mîndrescu, M AU - Begy, Róbert-Csaba AU - Feurdean, A TI - Recent sediment accumulation rates in contrasting lakes in the Carpathians (Romania): impacts of shifts in socio-economic regime JF - REGIONAL ENVIRONMENTAL CHANGE J2 - REG ENVIRON CHANGE VL - 16 PY - 2016 IS - 2 SP - 501 EP - 513 PG - 13 SN - 1436-3798 DO - 10.1007/s10113-015-0764-7 UR - https://m2.mtmt.hu/api/publication/2999014 ID - 2999014 AB - Longer-term environmental studies are increasingly used to better understand contemporary ecosystems conditions and for forecasting their future trajectories. Here, we use radiometric measurements and the characterisation of sediment properties from six mountain and a lowland lake in Central Eastern Europe with the aim to assess temporal and spatial variability in sediment accumulation rates (SARs) in relation to three socio-economic regimes: traditional (1840–1948), socialist (1948–1989) and post-socialist (post-1990). We also set out to determine reference conditions for these lakes i.e. conditions before significant human impact. Our results show a trend of increasing SARs from basal sediments (pre 1840) towards the present at only two sites. This contrasts with findings from Western and Central European lakes where SARs have predominantly increased from 1850 towards the top of cores. We highlight the differential impacts of the traditional, socialist and post-socialist periods on the SARs at these lakes. Lowland and mid-elevations lakes (n = 2) were most markedly impacted by the socialist period of land use regime; lakes from the southern Carpathians (n = 2) were more impacted in the traditional period (transhumance pastoral activities), whereas those from the north (n = 3) in the socialist and post-socialist periods (summer pastoralism). Results from our study show a continuous anthropogenic impact during the entire period considered, even in remote mountain areas. This suggests that a temporal frame of 100–150 years is too short to meaningfully register the reference conditions of these lakes. Furthermore, a predominantly natural state may not have existed for centuries in this region. © 2015 Springer-Verlag Berlin Heidelberg LA - English DB - MTMT ER - TY - JOUR AU - Mindrescu, M AU - Németh, Alexandra AU - Grădinaru, I AU - Bihari, Árpád AU - Németh, Tibor AU - Fekete, József AU - Bozsó, Gábor AU - Kern, Zoltán TI - Bolătău sediment record – chronology, microsedimentology and potential for a high resolution multimillennial paleoenvironmental proxy archive JF - QUATERNARY GEOCHRONOLOGY J2 - QUAT GEOCHRONOL VL - 32 PY - 2016 SP - 11 EP - 20 PG - 10 SN - 1871-1014 DO - 10.1016/j.quageo.2015.10.007 UR - https://m2.mtmt.hu/api/publication/2965683 ID - 2965683 N1 - Department of Geography, Ştefan cel Mare University, Str. Universitatii nr.13, Suceava, 720229, Romania Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences, MTA, Budaorsi ut 45, Budapest, H-1112, Hungary Hertelendi Laboratory of Environmental Studies, Institute for Nuclear Research, MTA, Bem ter, 18/c, Debrecen, H-4026, Hungary Department of Mineralogy, Geochemistry and Petrology, Faculty of Science and Informatics, University of Szeged, Egyetem street 2., Szeged, H-6722, Hungary Export Date: 15 October 2019 Correspondence Address: Kern, Z.; Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences, MTA, Budaörsi ut 45., Hungary; email: kern@geochem.hu Department of Geography, Ştefan cel Mare University, Str. Universitatii nr.13, Suceava, 720229, Romania Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences, MTA, Budaorsi ut 45, Budapest, H-1112, Hungary Hertelendi Laboratory of Environmental Studies, Institute for Nuclear Research, MTA, Bem ter, 18/c, Debrecen, H-4026, Hungary Department of Mineralogy, Geochemistry and Petrology, Faculty of Science and Informatics, University of Szeged, Egyetem street 2., Szeged, H-6722, Hungary Export Date: 22 February 2021 Correspondence Address: Kern, Z.; Institute for Geological and Geochemical Research, Budaörsi ut 45., Hungary; email: kern@geochem.hu Department of Geography, Ştefan cel Mare University, Str. Universitatii nr.13, Suceava, 720229, Romania Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences, MTA, Budaorsi ut 45, Budapest, H-1112, Hungary Hertelendi Laboratory of Environmental Studies, Institute for Nuclear Research, MTA, Bem ter, 18/c, Debrecen, H-4026, Hungary Department of Mineralogy, Geochemistry and Petrology, Faculty of Science and Informatics, University of Szeged, Egyetem street 2., Szeged, H-6722, Hungary Export Date: 3 May 2021 Correspondence Address: Kern, Z.; Institute for Geological and Geochemical Research, Budaörsi ut 45., Hungary; email: kern@geochem.hu LA - English DB - MTMT ER - TY - JOUR AU - Varga, György AU - Újvári, Gábor AU - Kovács, János AU - Szalai, Zoltán TI - Effects of particle optical properties on grain size measurements of aeolian dust deposits JF - GEOPHYSICAL RESEARCH ABSTRACTS J2 - GEOPHYS RES ABSTR VL - 17 PY - 2015 PG - 1 SN - 1029-7006 UR - https://m2.mtmt.hu/api/publication/2883685 ID - 2883685 LA - English DB - MTMT ER - TY - JOUR AU - Bihari, Árpád AU - Dezső, Z TI - Examination of the effect of particle size on the radionuclide content of soils JF - JOURNAL OF ENVIRONMENTAL RADIOACTIVITY J2 - J ENVIRON RADIOACTIV VL - 99 PY - 2008 IS - 7 SP - 1083 EP - 1089 PG - 7 SN - 0265-931X DO - 10.1016/j.jenvrad.2007.12.020 UR - https://m2.mtmt.hu/api/publication/150749 ID - 150749 N1 - ATKI2008/0012 [P21163] LA - English DB - MTMT ER -