Geochemical and ecotoxicological assessment for estuarine surface sediments from Southern Brazil

Rodrigues, Sarah Karoline; Abessa, Denis Moledo de Souza; Machado, Eunice da Costa

doi:10.1016/j.marenvres.2013.02.005

Cited by 26 publications

(21 citation statements)

References 46 publications

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“…Still, pollution studies in MPAs usually focus on measuring contaminant levels in environmental matrices such as water, sediments, and organisms (e.g., Michel et al 2001;Conti and Cecchetti 2003;Chou et al 2004;Pozo et al 2009;Perra et al 2011;King et al 2013;García-Alvarez et al 2014) rather than the effects of pollutants on the biota that is supposed to be protected (e.g., Terlizzi et al 2004;Pinsino et al 2008;Rodrigues et al 2013;Araujo et al 2013;Cruz et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Assessing pollution in marine protected areas: the role of a multi-biomarker and multi-organ approach

Gusso-Choueri

Choueri

Araujo

et al. 2015

Environ Sci Pollut Res

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Marine protected areas (MPAs) are vulnerable to many pressures, including pollution. However, environmental quality monitoring in these areas traditionally relies on only water chemistry and microbiological parameters. The goal of the current study was to investigate the role of a set of biomarkers in different target organs (liver, kidney, and gills) of fish in order to assess the environmental quality of an MPA (MTs, GPx, GST, GSH, DNA damage, LPO, AChE, and condition index). Chemical analyses were also performed on liver and muscle tissues to evaluate metal body burdens, and PAHs were identified in bile. A demersal fish (Cathorops spixii) that is widely consumed by the local population was used as bioindicator species, and the results were integrated using multivariate analysis. The use of the biomarker approach allowed for the identification of both seasonal and spatial variations in pollution sources around the Environmental Protected Area of Cananéia-Iguape-Peruíbe (APA-CIP). Higher metal body burdens associated with biological responses were found in the sites under the influence of urban areas during the dry season, and they were found in the sites under the influence of the Ribeira de Iguape River (RIR) during the rainy season. The liver was found to be more responsive in terms of its antioxidant responses, whereas gills were found to be more responsive to biomarkers of effect. These results show that this set of biomarker analyses in different organs of fish is a useful tool for assessing chemical pollution in an MPA.

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Section: Introductionmentioning

confidence: 99%

Assessing pollution in marine protected areas: the role of a multi-biomarker and multi-organ approach

Gusso-Choueri

Choueri

Araujo

et al. 2015

Environ Sci Pollut Res

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“…Estuarine and coastal areas are complex and important ecosystems in which many critical ecological processes occur. Simultaneously, these areas also provide habitats for a substantial amount of flora and fauna and often face increasing populations and anthropogenic activities Canuto et al 2013;Rodrigues et al 2013). However, they are often the ultimate receptacles of various anthropogenic pollutants that arise from industrial processes, urbanization, agricultural activities, and domestic waste (Ip et al 2007;Bastami et al 2012;Gan et al 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, improved knowledge of heavy metal distributions and determinants for different soil depths are essential for determining whether heavy metals in deep soil layers will accelerate. Due to changes in the water sediments, marine dynamics, and human activities that are caused by ceased river flows, the topography of the Diaokouhe course in the abandoned Yellow River Delta Natural Reserve (YRDNR) determines the reserved flow path and the natural features and ecosystems have changed substantially (Rodrigues et al 2013). The study area has witnessed rapid industrial growth and petrochemical industry development, and the Shengli Oilfield located in the DKHNR is considered to be the second largest oil reserve in China.…”

Section: Introductionmentioning

confidence: 99%

Contamination assessment of arsenic and heavy metals in a typical abandoned estuary wetland—a case study of the Yellow River Delta Natural Reserve

Xie

Sun

Zhang

et al. 2014

Environ Monit Assess

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Coastal and estuarine areas are often polluted by heavy metals that result from industrial production and agricultural activities. In this study, we investigated the concentration trait and vertical pattern of trace elements, such as As, Cd, Ni, Zn, Pb, Cu, and Cr, and the relationship between those trace elements and the soil properties in coastal wetlands using 28 profiles that were surveyed across the Diaokouhe Nature Reserve (DKHNR). The goal of this study is to investigate profile distribution characteristics of heavy metals in different wetland types and their variations with the soil depth to assess heavy metal pollution using pollution indices and to identify the pollution sources using multivariate analysis and sediment quality guidelines. Principal component analysis, cluster analysis, and pollution level indices were applied to evaluate the contamination conditions due to wetland degradation. The findings indicated that the concentration of trace elements decreased with the soil depth, while Cd increases with soil depth. The As concentrations in reed swamps and Suaeda heteroptera surface layers were slightly higher than those in other land use types. All six heavy metals, i.e., Ni, Cu, As, Zn, Cr, and Pb, were strongly associated with PC1 (positive loading) and could reflect the contribution of natural geological sources of metals into the coastal sediments. PC2 is highly associated with Cd and could represent anthropogenic sources of metal pollution. Most of the heavy metals exhibited significant positive correlations with total concentrations; however, no significant correlations were observed between them and the soil salt and soil organic carbon. Soil organic carbon exhibited a positive linear relationship with Cu, Pb, and Zn in the first soil layer (0-20 cm); As, Cr, Cu, Ni, Pb, and Zn in the second layer (20-40 cm); and As, Cr, Cu, Ni, Pb, and Zn in the third layer (40-60 cm). Soil organic carbon exhibited only a negative correlation with Cd (P<0.05), in the second and third layers. As, Cr, Cu, Ni, Pb, and Zn exhibited lower geoaccumulation index values (I geo values), which averaged less than 0 in the three soil layers, this finding indicates that the soils have remained unpolluted by these heavy metals. The mean concentrations of these trace elements were lower than Class I criteria. The degradation wetland restoration suggestions have also been provided in such a way as to restore the reserved flow path of the Yellow River. The results that are associated with trace element contamination would be helpful in providing scientific directions to restore wetlands across the world.

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“…In its layers, it is possible to detect the presence of contaminants that do not remain soluble after its release on surface waters. Thus, besides acting as a sink, the sediment may constitute a source of contaminants and nutrients to the adjacent waters (ADAMS et al, 1992 (RODRIGUES et al, 2013). In turn, the few -but no less important -studies in this segment on the northeastern region of the country (BURUAEM et al, 2013b;NILIN et al, 2013), are being still conducted in inverse proportion and speed to the society and scientific community demand.…”

Section: Introductionmentioning

confidence: 99%

Geochemical and Ecotoxicological Evaluation of an Estuarine Sediment Section at Pacoti River/Ce, Brazil

Souza

Silva

2016

HOLOS

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Pacoti estuary is located on the East coast of Ceará State/Brazil and is influenced by several sources of pollution. The sediment quality in three sampling stations was evaluated through an integrated approach. The sediments obtained were analyzed geochemically with respect to texture, organic matter, phosphorus, nitrogen and concentration of metals (Fe, Pb, Cu and Zn). Additionally, the metal loading in the sediment was determined considering a toxic risk quotient (RQ) and enrichment factor (EF). The ecotoxicological approach consisted of acute and chronic toxicity tests with species of marine invertebrates. The geochemical and ecotoxicological data were integrated using qualitative and technical criteria for multivariate analysis. The analyses showed a moderate change in the quality of the sediment Pacoti and there are influences of different contaminant sources. For this reason, one cannot disregard the input of other contaminants, not measured in this study, which probably may also have been relevant for sediment toxicity. Nonetheless, the data suggest that Pb and Cu metals as well as N tended to quality degradation in depositional areas and the sediment had some influence on the biological effects observed. KEYWORDS:

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Geochemical and ecotoxicological assessment for estuarine surface sediments from Southern Brazil

Cited by 26 publications

References 46 publications

Assessing pollution in marine protected areas: the role of a multi-biomarker and multi-organ approach

Assessing pollution in marine protected areas: the role of a multi-biomarker and multi-organ approach

Contamination assessment of arsenic and heavy metals in a typical abandoned estuary wetland—a case study of the Yellow River Delta Natural Reserve

Geochemical and Ecotoxicological Evaluation of an Estuarine Sediment Section at Pacoti River/Ce, Brazil

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