Relationship between potentially toxic elements and macrophyte communities in the Sava river.

Autor:	Jarić S; Department of Ecology, Institute for Biological Research 'Siniša Stanković' University of Belgrade, Bul. Despota Stefana 142, 11060 Belgrade, Serbia., Karadžić B; Department of Ecology, Institute for Biological Research 'Siniša Stanković' University of Belgrade, Bul. Despota Stefana 142, 11060 Belgrade, Serbia., Paunović M; Department of Hydroecology and Water Protection, Institute for Biological Research 'Siniša Stanković' University of Belgrade, Bul. Despota Stefana 142, 11060 Belgrade, Serbia., Milačič R; Department of Environmental Sciences, Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia., Ščančar J; Department of Environmental Sciences, Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia., Kostić O; Department of Ecology, Institute for Biological Research 'Siniša Stanković' University of Belgrade, Bul. Despota Stefana 142, 11060 Belgrade, Serbia., Zuliani T; Department of Environmental Sciences, Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia., Vidmar J; Department of Environmental Sciences, Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia., Miletić Z; Department of Ecology, Institute for Biological Research 'Siniša Stanković' University of Belgrade, Bul. Despota Stefana 142, 11060 Belgrade, Serbia., Anđus S; Department of Hydroecology and Water Protection, Institute for Biological Research 'Siniša Stanković' University of Belgrade, Bul. Despota Stefana 142, 11060 Belgrade, Serbia., Mitrović M; Department of Ecology, Institute for Biological Research 'Siniša Stanković' University of Belgrade, Bul. Despota Stefana 142, 11060 Belgrade, Serbia., Pavlović P; Department of Ecology, Institute for Biological Research 'Siniša Stanković' University of Belgrade, Bul. Despota Stefana 142, 11060 Belgrade, Serbia.
Jazyk:	angličtina
Zdroj:	Heliyon [Heliyon] 2024 Jul 20; Vol. 10 (15), pp. e34994. Date of Electronic Publication: 2024 Jul 20 (Print Publication: 2024).
DOI:	10.1016/j.heliyon.2024.e34994
Abstrakt:	Freshwater ecosystems are at significant risk of contamination by potentially toxic elements (PTEs) due to their high inherent toxicity, their persistence in the environment and their tendency to bioaccumulate in sediments and living organisms. We investigated aquatic macrophyte communities and the concentrations of As, Cu, Cd, Cr, Pb, Zn, Ni and Fe in water and sediment samples to identify a pollution pattern along the Sava River and to investigate the potential impact of these PTEs on the diversity and structure of macrophyte communities. The study, which covered 945 km of the Sava River, showed a downstream increase in sediment concentrations of the analyzed elements. Both species richness and alpha diversity of macrophyte communities also generally increase downstream. Ordinary and partial Mantel tests indicate that macrophyte communities are significantly correlated with sediment chemistry, but only weakly correlated with water chemistry. In the lowland regions (downstream), beta diversity decreases successively, which can be attributed to an increasing similarity of environmental conditions at downstream sites. Species richness is relatively low at sites with low concentrations of Cr, Cd, Fe, and Cu in the sediment. However, species richness increases to a certain extent with increasing element concentrations; as element concentrations increase further, species richness decreases, probably as a result of increased toxicity. Some species that are generally more tolerant to high concentrations of PTEs are: Ceratophyllum demersum, Iris pseudacorus, Najas marina, Butomus umbellatus, Vallisneria spiralis, Potamogeton gramineus and Bolboschoenus maritimus maritimus . Potamogeton perfoliatus and the moss species Cinclidotus fontinaloides and Fontinalis antipyretica have narrow ecological amplitudes in relation to the concentrations of PTEs in the sediment. Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. (© 2024 The Authors.)
Databáze:	MEDLINE
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