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Carbon isotopes in dissolved inorganic carbon as tracers of carbon sources in karst waters of the Plitvice Lakes, Croatia (CROSBI ID 67297)

Prilog u knjizi | izvorni znanstveni rad | međunarodna recenzija

Sironić, Andreja ; Krajcar Bronić, Ines ; Horvatinčić, Nada ; Barešić, Jadranka ; Borković, Damir ; Vurnek, Maja ; Lovrenčić Mikelić, Ivanka Carbon isotopes in dissolved inorganic carbon as tracers of carbon sources in karst waters of the Plitvice Lakes, Croatia // Stable Isotope Studies of the Water Cycle and Terrestrial Environments / Bojar, Ana-Voica ; Pelc, Andrej ; Lecuyer, Christophe (ur.). London : Delhi: Geological Society of London, 2020. doi: 10.1144/SP507-2020-49

Podaci o odgovornosti

Sironić, Andreja ; Krajcar Bronić, Ines ; Horvatinčić, Nada ; Barešić, Jadranka ; Borković, Damir ; Vurnek, Maja ; Lovrenčić Mikelić, Ivanka

engleski

Carbon isotopes in dissolved inorganic carbon as tracers of carbon sources in karst waters of the Plitvice Lakes, Croatia

Carbon isotope composition of dissolved inorganic carbon (DIC) was studied at springs, lakes and tributaries of the Plitvice Lakes. The Plitvice Lakes are a unique and complex karst lakes system consisting of 16 flow- through lakes connected by waterfalls and streams and characterized by intense calcium carbonate precipitation in the form of tufa and lake sediments. Two main springs have different 14C concentrations due to different geology and their variations were controlled by flow rates. Further downstream, at lakes to the Korana River that outflows from the lakes, the 14C activity and δ13C consistently increased down the flow. Carbon isotope composition from 2010- 2015 was compared with the values measured 30 years earlier. The variation in δ13CDIC was accounted for seasonal change, while 14C activity of surface water DIC decreased 7 – 12 % during the 30 years. Using a semi-empiric model, it is calculated that the downstream increase in the carbon isotope values is controlled by the exchange of DIC and atmospheric CO2 carbon and by introduction of decomposed biogenic carbon from the top soil organic meter of the lakes surrounding area in almost equal proportions.

karst lakes ; Plitvice Lakes ; 14C ; 13C ; dissolved inorganic carbon (DIC) ; 14C bomb peak

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Podaci o prilogu

objavljeno

10.1144/SP507-2020-49

Podaci o knjizi

Stable Isotope Studies of the Water Cycle and Terrestrial Environments

Bojar, Ana-Voica ; Pelc, Andrej ; Lecuyer, Christophe

London : Delhi: Geological Society of London

2020.

0305-8719

Povezanost rada

Biologija, Geologija, Interdisciplinarne prirodne znanosti, Kemija

Poveznice
Indeksiranost