Hazardous metal pollution in a protected coastal area from Northern Patagonia (Argentina)

Marinho, Carmen Haydee; Giarratano, Erica; Esteves, José Luís; Narvarte, Maite Andrea; Gil, Mónica N.

doi:10.1007/s11356-017-8393-y

Cited by 20 publications

(7 citation statements)

References 56 publications

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“…Moreover, we found that both above and belowground values in this study were lower than in the Patagonian bay (Marinho et al, 2017), which is in agreement with the lower values of these metals in sediments in that salt marsh.…”

Section: Accepted Manuscriptsupporting

confidence: 90%

“…Nonetheless, Pb concentrations in belowground tissues were higher than levels reported in previous studies in the BBE (Botté, 2005;Hempel et al, 2008) and in a Patagonian bay (Argentina) (Marinho et al, 2017). However, the values of Pb in sediments in this study are lower than in previous studies in the BBE and similar to those reported by Marinho et al (2017); this would imply a greater efficiency in the uptake of this metal by S. alterniflora in the present study.…”

Section: Accepted Manuscriptcontrasting

confidence: 61%

“…This implies that this metal is easily accumulated in S. alterniflora tissues in the BBE despite the specific sediment conditions. Reported BCFs for Zn for Spartina marshes worldwide vary greatly, from below 1 to values even several times higher than ours (~20) (Reboreda et al, 2008;Idaszkin et al, 2014Idaszkin et al, , 2017Marinho et al, 2017;Pang et al, 2017). As for Pb, Pang et al, (2017) also reported differences between sites regarding BCFs for Cu and Zn, which were also attributed to the degree of pollution and the sediment characteristics.…”

Section: Accepted Manuscriptcontrasting

confidence: 52%

“…This metal was only reported in belowground tissues and values were usually lower than in the corresponding tissues of S. alterniflora in other salt marshes (Appendix , Table A1) or in other Spartina species (e.g., Reboreda and Caçador, 2007;Reboreda et al, 2008;Duarte et al, 2010;Cuoto et al, 2013;Phillips et al, 2015). Nonetheless, Pb concentrations in belowground tissues were higher than levels reported in previous studies in the BBE (Botté, 2005;Hempel et al, 2008) and in a Patagonian bay (Argentina) (Marinho et al, 2017). However, the values of Pb in sediments in this study are lower than in previous studies in the BBE and similar to those reported by Marinho et al (2017); this would imply a greater efficiency in the uptake of this metal by S. alterniflora in the present study.…”

Section: Accepted Manuscriptmentioning

confidence: 72%

“…Bioconcentration factors showed different patterns across metals, sites and sampling dates. Differences in BCFs are usually related to the metal considered (for instance, essential versus non-essential ones) but the physico-chemical characteristics of sediments can also have implications to determine the accumulation or not of metals in plant tissues (Reboreda et al, 2008;Marinho et al, 2017; Pang et al, 2017; Petranich et al, 2017). As already stated, sediment characteristics in site 2 makes metals more available for plant uptake than in the other sites, and this is in line with BCFs always higher at site 2.…”

Section: Metal Partitioning In S Alterniflora Salt Marshes Within Thmentioning

confidence: 99%

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Uptake and accumulation of metals in Spartina alterniflora salt marshes from a South American estuary

Negrin

Botté

Colla

et al. 2019

Science of The Total Environment

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Salt marshes are capable of reducing metal pollution in coastal waters, but this capacity is highly dependent on the metal, the physico-chemical characteristics of the sediment, the plant species, the production of biomass, the time of the year, etc. The aim of this study was to assess the uptake and accumulation of Pb, Ni, Cu and Zn in Spartina alterniflora from three salt marshes within the Bahía Blanca estuary (BBE), a human-impacted Argentinean system. Metal concentrations in sediments and plants showed the same order at all sites: Zn > Cu > Pb ≥ Ni. The site with lower organic matter and fine sediment content had lower metal concentrations in the sediments, but not a lower metal content in the plant tissues, meaning that the sediment characteristics influenced the metal concentrations in the sediment and their uptake by plants. Despite differences in sediment characteristics between sites, metals were always higher in the belowground tissues than in aboveground ones and, in general, higher in dead than in live tissues. Some metals were accumulated in plant tissues, but not others, and this is dependent on the metal and the sediment characteristics. Allocation patterns of metals in tissues of S. alterniflora were mainly dependent on metal concentrations, determining higher belowground pools, but the aboveground pools were important in some cases due to higher biomass. Partitioning of metals in above or belowground pools determines their fate within the estuarine system, since tissues can decompose in situ (belowground) or be exported (aboveground). Seasonal dynamics were important for some variables but were less noticeable than the differences between sites and tissues. Our results indicate that S. alterniflora from the BBE is efficient in accumulating some metals, despite usually low metal concentrations in sediments and plants. This accumulation capacity has implications for the whole system through the fate of the tissues.

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Section: Accepted Manuscriptsupporting

confidence: 90%