Bioavailability of heavy metals in sediments of two coastal lagoons in Rio de Janeiro, Brazil

Lacerda, Luiz Drude de; Fernandez, Marcos Antônio; Calazans, C. F.; Tanizaki, Kazue

doi:10.1007/bf00006477

Cited by 72 publications

(37 citation statements)

References 12 publications

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“…In the thalli of the two Ulva freshwater populations, the Co concentration was found to be the lowest out of all the tested elements. Our values for Co were very similar to those obtained by Lacerda et al (1992), Güven et al (1993) and Malea and Haritonidis (2000) in U. fasciata, U. lactuca and U. rigida. Cobalt is the least efficiently accumulated heavy metal by opportunistic taxa from Ulva genus.…”

Section: Discussionsupporting

confidence: 91%

The accumulation of metal (Co, Cr, Cu, Mn and Zn) in freshwater Ulva (Chlorophyta) and its habitat

2013

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The possibility of using freshwater Ulva (Chlorophyta) as a bioaccumulator of metals (Co, Cr, Cu, Mn and Zn) in lake and river water was examined weekly in the summer of 2010 in three types of samples: the water, the sediment and the thalli of Ulva. Samples of freshwater Ulva were collected from two aqueous ecosystems lie 250 km away from the basin of the Baltic Sea and 53 km from each other. A flow lake located in the centre of the big city was the first water reservoir (ten sites) and second, the suburban river (six sites). The mean metal concentrations in the Ulva tissue from the river and the lake decreased in the following order:respectively. Moreover, a negative and statistically significant correlation between Mn concentrations in the Ulva thalli and the river water was observed. Additionally, numerous correlations were noted between the different concentrations of metals within the Ulva thalli, in the water and in the sediment. The great concentrations of Mn and Zn and the smallest of Co were found in thalli of Ulva, irrespective of the type of the ecosystem from which samples of algal thalli originated. Freshwater Ulva populations examined in this study were clearly characterized a dozen or so times by the higher Mn and Cr accumulation than taxa from that genera coming from sea ecosystems. The calculated bioconcentration factor confirm the high potential for freshwater Ulva to be a bioaccumulator of trace metals in freshwater ecosystems.

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Section: Discussionsupporting

confidence: 91%

The accumulation of metal (Co, Cr, Cu, Mn and Zn) in freshwater Ulva (Chlorophyta) and its habitat

2013

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“…Elevated concentrations of heavy metals have been recorded in mangrove sediments all over the world, which often reflects the long-term pollution caused by human activities (Lacerda et al, 1992;Perdomo et al, 1998;Harris and Santos, 2000;Tam and Wong, 2000). Heavy metals are amongst the most serious pollutants within the natural environment due to their toxicity, persistence and bioaccumulation problems (MacFarlane and Burchett, 2000).…”

Section: Introductionmentioning

confidence: 99%

An assessment of metal contamination in mangrove sediments and leaves from Punta Mala Bay, Pacific Panama

Defew

Mair

Guzmán

2005

Marine Pollution Bulletin

198

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“…Indeed, LARDICCI et al (2001) pointed out that salinity below 18-20, as found in the present work, is considered to be a threshold affecting the structure of the benthic assemblages in lagoon habitats. Heavy metals concentration levels were always lower when compared to other studies in the region (LACERDA et al 1992, WASSERMAN et al 1998, PATCHINEELAM 1999 and reference backgrounds from other Brazilian coastal lagoons (SANTOS et al 2003, SABADINI-SANTOS et al 2009). Low concentrations in SJLS did not signal for anthropogenic pollution, considering its increasing urban occupation.…”

Section: Discussionmentioning

confidence: 50%

Macrobenthic community structure in a Brazilian chocked lagoon system under environmental stress

Mendes

Soares-Gomes

2011

Zoologia (Curitiba, Impr.)

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ABSTRACT. Saquarema-Jaconé lagoonal system (SJLS) comprises a sequence of five interconnected shallow brackish lagoons with access to the sea by a single permanent tidal channel. It is a eutrophic system, receiving constant input of organic load from its urbanized catchments. The relationship between several environmental variables and the spatialtemporal distribution of the benthic macrofauna was assessed during four seasonal samplings (dry and wet periods of [2007][2008][2009]. Sediment replicates were sampled at seven sites for biological identification and analyzes of organic matter, carbonates, phytopigments, grain size and heavy metals. Salinity, dissolved oxygen and redox potential were measured in situ. SJLS was characterized by sandy bottoms with very reducing conditions. Redox potential significantly discriminated between the dry and wet periods and anoxic conditions were observed in the latter. No significant seasonal differences were observed in the macrofauna. A total of 37 taxa were identified, of which Capitella sp, oligochaetes and Laeonereis culveri (Webster, 1880) were the dominant, representing the early stage of community recovery following dystrophic crises. The faunistic pattern seems to be determined by complex combinations of silt+clay with salinity, organic matter and redox potential. On the other hand, the low concentrations of heavy metals found did not seem to influence the structure and distribution of the biota. SJLS is undergoing persistent environmental stress, dominated by first-order opportunistic species linked to organically enriched sediments.

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Bioavailability of heavy metals in sediments of two coastal lagoons in Rio de Janeiro, Brazil

Cited by 72 publications

References 12 publications

The accumulation of metal (Co, Cr, Cu, Mn and Zn) in freshwater Ulva (Chlorophyta) and its habitat

The accumulation of metal (Co, Cr, Cu, Mn and Zn) in freshwater Ulva (Chlorophyta) and its habitat

An assessment of metal contamination in mangrove sediments and leaves from Punta Mala Bay, Pacific Panama

Macrobenthic community structure in a Brazilian chocked lagoon system under environmental stress

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