Assessment of metal(loid)s and organic matter dispersion in a semi-enclosed karstic bay: Sedimentary record of natural and anthropogenic sources (Kaštela Bay, Adriatic Sea, Croatia)

Lovrenčić Mikelić, Ivanka; Oreščanin, Višnja; Cukrov, Neven (2026) Assessment of metal(loid)s and organic matter dispersion in a semi-enclosed karstic bay: Sedimentary record of natural and anthropogenic sources (Kaštela Bay, Adriatic Sea, Croatia). Physics and Chemistry of the Earth, 145 . ISSN 1474-7065

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Abstract

This study investigates the vertical distribution of metal(loid)s (K, Fe, Ti, Mn, V, Cr, Co, Ni, Cu, Zn, Ga, Rb, Sr, Pb, and As) and organic matter in sediments of Kaštela Bay, a semi-enclosed karstic coastal system influenced by both natural processes and long-term anthropogenic activities. Sediment samples collected from eight depth intervals up to 50 cm depth were analysed to identify accumulation patterns and factors controlling dispersion. Four areas with elevated metal(loid)s and organic matter contents were identified across the Bay. Distinct distribution patterns indicate the combined influence of geological background, weathering, depositional conditions, hydrodynamics, fluvial input, seasonal changes, and local anthropogenic sources. Multivariate analyses distinguished predominantly geogenic from predominantly anthropogenic element associations. The results suggest that seabed bathymetry and organic matter influence dispersion differently among element groups and may provide useful indicators for interpreting dominant controls on element/contaminant accumulation.

Item Type:	Article
Uncontrolled Keywords:	contamination; distribution map; flysch/marl; hot spot; limestone; marine sediment
Subjects:	NATURAL SCIENCES > Geology
Divisions:	Division for Marine and Enviromental Research Division of Experimental Physics
Projects:	Project title Project leader Project code Project type Radionuklidi i elementi u tragovima u okolišnim sustavima- Delko Barišić 098-0982934-2713 MZOS
Depositing User:	Ivanka Lovrenčić Mikelić
Date Deposited:	23 Oct 2026 07:13
URI:	https://fulir.irb.hr:/id/eprint/12163
DOI:	10.1016/j.pce.2026.104878

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