Accumulation and biological cycling of heavy metal in four salt marsh species, from Tagus estuary (Portugal)

Duarte, Bernardo; Caetano, Miguel; Almeida, Pedro R.; Vale, Carlos; Caçador, Isabel

doi:10.1016/j.envpol.2009.12.004

Cited by 153 publications

(82 citation statements)

References 30 publications

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“…Similar behaviour was noted in Z. noltii in the present work, but for the other two studied species, the aboveground biomass presented lower metal values in comparison with the belowground biomass, which is in agreement with previous studies (Duarte et al 2010). Our results showed that the heavy metal concentrations were higher in the belowground organs (in agreement with Cambrollé et al 2008;Reboreda et al 2008;Duarte et al 2010) of both S. maritimus and S. maritima, which suggests the ability to accumulate heavy metals; in contrast, Z. noltii showed similar concentration levels in both aboveground and belowground organs but still accumulated metal. The three studied species presented higher belowground biomass values in the spring than the other seasons, and many of the heavy metal concentrations were higher in autumn and winter.…”

Section: Scirpus Maritimus Spartina Maritima Zostera Noltiisupporting

confidence: 82%

“…When plants accumulate metals, the roots and rhizomes generally show higher concentrations than the aboveground parts (Sinicrope et al 1992). This behaviour could be seen in other studies like Reboreda et al (2008) and Duarte et al (2010). It was also confirmed that heavy metal accumulation is not strictly independent of biomass production (Caçador et al 2009;Duarte et al 2010).…”

Section: Discussionsupporting

confidence: 71%

“…As previously noted for other halophytes in other coastal systems (Caçador et al 2009;Duarte et al 2010), higher amounts of plant biomass were found in the belowground than the aboveground organs. When plants accumulate metals, the roots and rhizomes generally show higher concentrations than the aboveground parts (Sinicrope et al 1992).…”

Section: Discussionsupporting

confidence: 65%

“…This behaviour could be seen in other studies like Reboreda et al (2008) and Duarte et al (2010). It was also confirmed that heavy metal accumulation is not strictly independent of biomass production (Caçador et al 2009;Duarte et al 2010). Although all species presented similar patterns of biomass production, with higher values during spring and lower values towards the winter, S. maritimus is peculiar in that it completely loses all of its aboveground biomass during the autumn.…”

Section: Discussionsupporting

confidence: 63%

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Halophytes as sources of metals in estuarine systems with low levels of contamination

Couto

Duarte

Barroso

et al. 2013

Functional Plant Biol.

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Abstract.Heavy metal concentrations present in the above-and beowground tissues of Scirpus maritimus L., Spartina maritima (Curtis) Fernald and Zostera noltii Hornem were analysed seasonally in the Mondego Estuary, Portugal. The sediments of the estuary were confirmed to contain only low concentrations of heavy metals. The belowground tissues of all three species showed higher heavy metal concentrations than the aboveground tissues. Although the sediments only contained low levels of contamination, because the area occupied by S. maritimus and Z. noltii was large, significant quantities of heavy metals were accumulated and exported to the surrounding water bodies. In contrast with observations of highly contaminated estuaries, it was found that in spite of the low level of contaminants in the sediments of the Mondego Estuary, aquatic vegetation functioned as a source of metals for nearby systems.

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Section: Scirpus Maritimus Spartina Maritima Zostera Noltiisupporting

confidence: 82%

Section: Discussionsupporting

confidence: 71%

Section: Discussionsupporting

confidence: 65%

Section: Discussionsupporting

confidence: 63%

See 2 more Smart Citations

Halophytes as sources of metals in estuarine systems with low levels of contamination

Couto

Duarte

Barroso

et al. 2013

Functional Plant Biol.

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“…Also, some representative halophytic species colonizing the substrata such as Halimione portulacoides and Spartina maritima (Reboredo, 1983(Reboredo, , 1985(Reboredo, , 1993Padinha et al, 2000;Reboreda and Caçador, 2007), or the former species plus Sarcocornia fruticosa and Sarcocornia perennis (Duarte et al 2010) or even Juncus maritimus, Spartina patens, Phragmites australis and Triglochin striata (Almeida et al, 2011) were evaluated in terms of their metal content.…”

Section: Pollutionmentioning

confidence: 99%

Impact of human activities on coastal vegetation ? A review

Calvão

Pessoa²,

Lidon

2013

Emir. J. Food Agric

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Coastal dunes constitute complex interface ecosystems between the land and sea, providing important ecological and socio-economic services like coastal protection, recreation, regulation, food supply and biodiversity. They are characterized by high ecological diversity and also by extremely specialized and endemic species. Coastal areas, because of their position between land and sea, are attractive for many human activities. Unfortunately coastal systems have had a long history of exploitation and mismanagement.

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Resistance of salt marsh substrates to near‐instantaneous hydrodynamic forcing

Brooks

Möller

Carr

et al. 2020

Earth Surf Processes Landf

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Salt marshes deliver vital ecosystem services by providing habitats, storing pollutants and atmospheric carbon, and reducing flood and erosion risk in the coastal hinterland. Net losses in salt marsh areas, both modelled globally and measured regionally, are therefore of concern. Amongst other controls, the persistence of salt marshes in any one location depends on the ability of their substrates to resist hydrodynamic forcing at the marsh front, along creek margins and on the vegetated surface. Where relative sea level is rising, marsh elevation must keep pace with sea‐level rise and landward expansion may be required to compensate for areal loss at exposed margins. This paper reviews current understanding of marsh substrate resistance to the near‐instantaneous (seconds to hours) forcing induced by hydrodynamic processes. It outlines how variability in substrate properties may affect marsh substrate stability, explores current understanding of the interactions between substrate properties and erosion processes, and how the cumulative impact of these interactions may affect marsh stability over annual to decadal timescales. Whilst important advances have been made in understanding how specific soil properties affect near‐instantaneous marsh substrate stability, less is known about how these properties interact and alter bulk substrate resistance to hydrodynamic forcing. Future research requires a more systematic approach to quantifying biological and sedimentological marsh substrate properties. These properties must then be linked to specific observable erosion processes, particularly at the marsh front and along creek banks. A better understanding of the intrinsic dynamics and processes acting on, and within, salt marsh substrates will facilitate improved prediction of marsh evolution under future hydrodynamic forcing scenarios. Notwithstanding the additional complications that arise from morphodynamic feedbacks, this would allow us to more accurately model the future potential protection from flooding and erosion afforded by marshes, while also increasing the effectiveness of salt marsh restoration and recreation schemes. © 2020 The Authors. Earth Surface Processes and Landforms published by John Wiley & Sons Ltd

show abstract

Accumulation and biological cycling of heavy metal in four salt marsh species, from Tagus estuary (Portugal)

Cited by 153 publications

References 30 publications

Halophytes as sources of metals in estuarine systems with low levels of contamination

Halophytes as sources of metals in estuarine systems with low levels of contamination

Impact of human activities on coastal vegetation ? A review

Resistance of salt marsh substrates to near‐instantaneous hydrodynamic forcing

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