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BY-NC-ND 3.0 license Open Access Published by De Gruyter Open Access August 16, 2014

Isotope analyses of the lake sediments in the Plitvice Lakes, Croatia

Nada Horvatinčić EMAIL logo , Andreja Sironić , Jadranka Barešić , Ines Bronić , Jovana Nikolov , Nataša Todorović , Jan Hansman and Miodrag Krmar
From the journal Open Physics


The analyses of radioactive isotopes 14C, 137Cs and 210Pb, and stable isotope 13C were performed in the sediment cores, top 40 cm, taken in 2011 from karst lakes Prošće and Kozjak in the Plitvice Lakes National Park, central Croatia. Frozen sediment cores were cut into 1 cm thick layers and dried. 14C activity in both carbonate and organic fractions was measured using accelerator mass spectrometry technique with graphite synthesis. 137Cs, 210Pb, 214Pb and 214Bi were measured by low level gamma spectrometry method on ORTECHPGe detector with the efficiency of 32%.

Distribution of 14C activity from both lakes showed increase of the 14C activity in the top 10–12 cm in both carbonate and organic fractions as a response to thermonuclear bomb-produced 14C in the atmosphere in the sixties of the 20th century. Anthropogenically produced 137Cs was also observed in sediment profiles. Sedimentation rates for both lake sediments were estimated based on the unsupported 210Pb activity.

Different 14C activity of the carbonate fraction (63–80 pMC, percent of modern carbon) and organic fraction (82–93 pMC) is the result of geochemical and biological processes of the sediment precipitation in the lake waters. This is also confirmed by the δ 13 C values of both fractions. Carbon isotope composition, a 14 C and δ 13 C, was compared with the lake sediments from the same lakes collected in 1989 and 2003.

[1] W. Pennington, T. G. Tutin, R. S. Cambray, E. M. Fisher, Nature 242, 324 (1973) in Google Scholar

[2] J. A. Luque, R. Julia, Sediment. Geol. 148, 343 (2002) in Google Scholar

[3] J. McGeehin et al, Radiocarbon 46, 893 (2004) 10.1017/S0033822200035931Search in Google Scholar

[4] Z. Franić, G. Marović, N. Lokobauer, J. Senčar, Environmental Monitoring and Assessment 51, 695 (1998) in Google Scholar

[5] I. Levin et al, Tellus B 62, 26 (2010) in Google Scholar

[6] Q. Hua, M. Barbetti, A. Z. Rakowski, Radiocarbon 55, 2059 (2013) in Google Scholar

[7] I. Krajcar Bronić, B. Obelić, N. Horvatinčić, J. Barešić, A. Sironić, K. Minichreiter, Nucl. Inst. Meth. A 619, 491 (2010) in Google Scholar

[8] J. Barešić, N. Horvatinčić, Z. Roller-Lutz, Isot. Environ. Health S. 47, 316 (2011) in Google Scholar PubMed

[9] N. Horvatinčić, J. Briansó, B. Obelić, J. Barešić, I. Krajcar Bronić, Water Air Soil. Poll: Focus 6, 475 (2006) in Google Scholar

[10] M. Brenner, T. J. Whitmore, J. H. Curtis, D. A. Hoddel, C. L. Schelske, J. Paleolimnol. 22, 205 (1999) in Google Scholar

[11] A. L. Herczeg, A. K. Smith, J. C. Dighton, Appl Geochem. 16, 73 (2001) in Google Scholar

[12] D. A. Hodell, C. L. Schelske, Limnol. Oceanogr. 43, 200 (1998) in Google Scholar

[13] P. G. Appleby, F. Oldfield, In: M. Ivanovich, R. S. Harmon (Ed.), Uranium Series Disequilibrium. Applications to Earth, Marine and Environmental Sciences (Clarendon Press, Oxford, 1992) 731 Search in Google Scholar

[14] P. G. Appleby, F. Olfield, Catena 5, 1 (1978) in Google Scholar

[15] D. Srdoč et al, Radiocarbon 34, 415 (1992) 10.1017/S0033822200013485Search in Google Scholar

[16] N. Horvatinčić et al, Radiocarbon 50, 233 (2008) 10.1017/S0033822200033543Search in Google Scholar

[17] D. Srdoč et al., Radiocarbon 28, 495 (1986) 10.1017/S0033822200007633Search in Google Scholar

[18] J. Barešić, N. Horvatinčić, P. Vreča, A. Sironić, Acta Carsologica 40, 293 (2011) 10.3986/ac.v40i2.14Search in Google Scholar

[19] M. Petrik, In: J. Šafar (Ed.), Nacionalni park Plitvicka jezera, (Grafički zavod Hrvatske, Zagreb, 1958) 49 (in Croatian with abstracts in English and German). Search in Google Scholar

[20] S. Babinka, Ph.D. thesis, Wilhelms-Universität (Bonn, Germany, 2007) Search in Google Scholar

[21] I. Krajcar Bronić, N. Horvatinčić, A. Sironić, B. Obelić, J. Barešić, I. Felja, Nucl. Inst. Meth. B. 268, 943 (2010) in Google Scholar

[22] P. Naysmith et al., Radiocarbon 52, 263 (2010) 10.1017/S003382220004529XSearch in Google Scholar

[23] W. G. Mook, J. van der Plicht, Radiocarbon 41, 227 (1999) 10.1017/S0033822200057106Search in Google Scholar

[24] Y. Kanai, Applied Radiation and Isotopes 69, 455 (2011) in Google Scholar

[25] L. Xiang, X. X. Lu, D. L. Higgit, S. M. Wang, Journal of Asian Earth Sciences 21, 77 (2002) in Google Scholar

[26] A. Sironić, Ph.D. thesis, University of Zagreb (Zagreb, Croatia, 2012) Search in Google Scholar

Published Online: 2014-8-16
Published in Print: 2014-10-1

© 2014 Versita Warsaw

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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