Carbon Isotope Fractionation in Karst Aquatic Mosses (CROSBI ID 284331)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Sironić, Andreja ; Alegro, Antun ; Horvatinčić, Nada ; Barešić, Jadranka ; Brozinčević, Andrijana ; Vurnek, Maja ; Krajcar Bronić, Ines ; Borković, Damir ; Lovrenčić Mikelić, Ivanka
engleski
Carbon Isotope Fractionation in Karst Aquatic Mosses
Radiocarbon activity (a14C) and 13C composition (δ13C) were measured in hygrophyte and mesophyte (land) mosses collected in the natural habitat of the Plitvice Lakes and along the Zrmanja and Krupa Rivers (typical continental and Mediterranean climates, respectively), Croatia. a14C and δ13C values of mosses, of atmospheric CO2 and dissolved inorganic carbon (DIC) were compared for contemporary data and for data from 30 years ago at the Plitvice Lakes when 14C activity of atmospheric CO2 was ~30% higher. A positive 18 correlation between a14Cmoss and δ13Cmoss was observed for all data reflecting change of 19 carbon isotopic composition in DIC along the water flows and in atmospheric CO2 regardless of the climatic regions and historic period. Fraction of the atmospheric carbon in moss (ωatm. C) and carbon fractionation factor from aquatic CO2 (DIC) to moss tissue (εmoss/g-aq) were calculated for each individual moss. Three species of mosses had ωatm. C ~0 % implying that they turn to anabiosis during dry periods. The relation εmoss/g-aq vs. ωatm. C differentiates true aquatic and amphiphyte mosses. The first had a statistically significant negative correlation between εmoss/g-aq and ωatm. C. The amphiphyte mosses had lower εmoss/g-aq with higher water flow rates.
aquatic mosses ; karst ; photosynthesis ; carbon-13 ; carbon-14 ; Croatia ; Isotope ecology ; isotope fractionation
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Podaci o izdanju
57 (2)
2021.
142-165
objavljeno
1025-6016
1477-2639
10.1080/10256016.2020.1852235
Povezanost rada
Biologija, Geologija, Interdisciplinarne prirodne znanosti, Kemija