Bioaccumulation of metals in Spartina alterniflora salt marshes in the estuary of the World's Largest Choked Lagoon.

Autor: Moreira LL; Universidade Federal do Rio Grande - FURG, Av. Itália, km 8, Campus Carreiros, 96203-900, Rio Grande, Brasil., Tavella RA; Universidade Federal do Rio Grande - FURG, Av. Itália, km 8, Campus Carreiros, 96203-900, Rio Grande, Brasil., da Silva Bonifácio A; Universidade Federal do Rio Grande - FURG, Av. Itália, km 8, Campus Carreiros, 96203-900, Rio Grande, Brasil., de Lima Brum R; Universidade Federal do Rio Grande - FURG, Av. Itália, km 8, Campus Carreiros, 96203-900, Rio Grande, Brasil., da Silva Freitas L; Universidade Federal do Rio Grande - FURG, Av. Itália, km 8, Campus Carreiros, 96203-900, Rio Grande, Brasil., da Rosa Moraes NG; Universidade Federal do Rio Grande - FURG, Av. Itália, km 8, Campus Carreiros, 96203-900, Rio Grande, Brasil., Fiasconaro ML; Universidade Federal do Rio Grande - FURG, Av. Itália, km 8, Campus Carreiros, 96203-900, Rio Grande, Brasil.; Instituto de Desarrollo Tecnológico para la Industria Química - (CONICET- UNL), Universidad Católica de Santa Fe, Santa Fe, Argentina., Ramires PF; Universidade Federal do Rio Grande - FURG, Av. Itália, km 8, Campus Carreiros, 96203-900, Rio Grande, Brasil., Penteado JO; Universidade Federal do Rio Grande - FURG, Av. Itália, km 8, Campus Carreiros, 96203-900, Rio Grande, Brasil., Baisch PRM; Universidade Federal do Rio Grande - FURG, Av. Itália, km 8, Campus Carreiros, 96203-900, Rio Grande, Brasil., da Silva Júnior FMR; Universidade Federal do Rio Grande - FURG, Av. Itália, km 8, Campus Carreiros, 96203-900, Rio Grande, Brasil. f.m.r.silvajunior@gmail.com.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2024 Apr; Vol. 31 (18), pp. 26880-26894. Date of Electronic Publication: 2024 Mar 08.
DOI: 10.1007/s11356-024-32810-3
Abstrakt: Salt marshes are capable of mitigating metal pollution in coastal environments, yet the efficacy of this remediation is contingent upon various environmental factors and the plant species involved. This study investigates the influence of different anthropogenic activities, including industrial, urban, recreational (in an insular area), and dredging operations, on the bioaccumulation of eight metals (As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn) within Spartina alterniflora Loisel. in the Patos Lagoon estuary, Brazil. The research aims to assess the pattern of metal bioaccumulation and distribution within the plant's leaves, stems, and roots while also examining metal presence in the sediment. Our main findings reveal that S. alterniflora exhibited elevated metal levels in its plant structure directly related with the metal concentrations in the surrounding sediment, which, in turn, is related to the different anthropogenic activities. The industrial area presented the highest metal levels in sediment and plant sections, followed by dredging, insular, and urban areas. This same pattern was mirrored for the bioconcetration factors (BCF), with the BCFs consistently indicating active metal bioaccumulation across all areas and for most of the metals. This provides evidence of the metal bioaccumulation pattern in S. alterniflora, with elevated BCFs in areas affected by activities with a higher degree of impact. Translocation factors (TF) showed varying metal mobility patterns within the plant's below-ground and above-ground sections across the different areas, with only Hg exhibiting consistent translocation across all study areas. Zn was the primary metal contributor in all plant sections, followed by Pb and Cu. It is worth noting that Pb is a non-essential metal for this plant, highlighting the relationship between elevated Pb contributions in the plant sections and the bioaccumulation of this metal within the plant's structure. Overall, this study emphasizes the bioaccumulation capacity of S. alterniflora and elucidate the intrinsic connection between different anthropogenic activities and their impact on the resultant availability and bioaccumulation of metals by this salt marsh plant.
(© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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