Abstract
Purpose
The aim of this study was to describe the distribution and composition of foraminiferal assemblages and granulometric properties of sediment in transitional environments along the eastern Adriatic coast. Another objective was to compare the results and establish correlations (similarities and differences) between these sensitive environments.
Materials and methods
Sediments from transitional environments were collected in December 2019 at three geographically separate sites: the Mirna salt marsh, the Soline mud plain, and the Nin intertidal plain. A total of 18 sediment samples (top 2 cm) were collected along the land-sea transect. Micropaleontological and granulometric analyses were performed. Identification of foraminiferal genera and species, absolute and relative abundance, and ecological (biodiversity) indices were determined on standardized samples. Particle size distribution was determined, which allowed classification of the sediment. Carbonate content and organic content anaylses were performed as well.
Results
At the northernmost site, at the Mirna salt marsh, muddy sediments with low species diversity predominate. The Soline mud plain was characterized by greater species diversity and a uniform proportion of sandy and silty components in sediment. At the Nin intertidal plain, sediment was primarily sand with the greatest foraminiferal species diversity compared to the other two sites. The genus Ammonia dominated in all foraminiferal assemblages.
Conclusions
A different distribution pattern of benthic foraminifera in each environment was associated with variations in the grain size of sediment and was also influenced by the supply of freshwater from the river and karstic springs. Considering the lack of research on the transitional environments of the eastern Adriatic coast, this work provides more detailed data and emphasizes the importance of these environments and their biota.
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Data availability
The authors declare that data supporting the findings of this study are available within this paper and its Supplementary files.
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Acknowledgements
This study was performed within the framework of the scientific project IP-2019-04-5775 BREEMECO, funded by the Croatian Science Foundation. We would like to thank reviewers for useful suggestions which significantly improved this article. Special thanks to Štefica Kampić for the laboratory (LOI method) assistance.
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Čančar, M., Križnjak, K., Neral, N. et al. Correlation of foraminifera content and granulometric properties of sediment in different transitional environments along a karstic coast, eastern Adriatic, Croatia. J Soils Sediments 23, 4119–4131 (2023). https://doi.org/10.1007/s11368-023-03638-0
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DOI: https://doi.org/10.1007/s11368-023-03638-0