Macrobenthic community in the Douro estuary: relations with trace metals and natural sediment characteristics

Mucha, Ana P.; Vasconcelos, M. Teresa S. D.; Bordalo, Adriano A.

doi:10.1016/s0269-7491(02)00229-4

Cited by 307 publications

(139 citation statements)

References 26 publications

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“…The natural gradients in salinity, granulometry and organic content have been described as the most important factors to explain the distribution and abundance of macrobenthic community in numerous estuarine ecosystems (Wolff 1983;Warwick et al 1991;Attrill et al 1996;Rakocinski et al 1997;Ysebaert et al 2002;Mucha et al 2003;Sousa et al 2006). In general, The Tinto-Odiel system has shown typical water and sediment characteristics of estuarine areas at the spatial scale.…”

Section: Discussionmentioning

confidence: 99%

“…Independently of sampling year, the structure of the community has been mainly determined by granulometry and the organic matter content in sediment, which are considered as the major structuring factors for the natural macrobenthic distribution pattern together with salinity (Warwick et al 1991;Ysebaert et al 2002;Mucha et al 2003;Sousa et al 2006). Community variables such as Shannon Diversity or taxa number showed the typical trend of estuaries, with a progressive increment towards the mouth river, but in a wide interval (e.g., H'= 0.96 and only 2 families at O1 until H'= 2.84 and 46 families at C4), which seem to demonstrate a strong stress on communities, at least at inner areas.…”

Section: Discussionmentioning

confidence: 99%

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Spatial and temporal variation of the benthic macrofauna in a grossly polluted estuary from southwestern Spain

2009

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The spatial-temporal variation of subtidal macrofauna communities of the OdielTinto estuary, one of the most polluted areas in the world, was studied along a sampling period of 4 years (and 3 sampling events). This system has shown typical water and sediment characteristics of estuarine areas although the inner stations showed high concentrations of heavy metals. The structure of the macrofauna community was associated with granulometry, the percentage of organic matter and the heavy metals.Like in other estuaries, the community was dominated by polychaetes (especially by small size opportunistic taxa), meanwhile the crustaceans were the least abundant. Some changes during the sampling period were: slight increment in richness and diversity; greater presence of molluscs and crustaceans in the inner zones; a more homogeneous spatial distribution of opportunistic taxa and a higher number of taxa involved in the differences among the estuary areas. The period of study does not allow assuring that these changes have been due to a true improvement or to natural cycles of the communities in naturally stressed systems. So that it would be necessary the establishment of a long-term monitoring programme to study the evolution of the macrofauna communities to state if the corrective measures could achieve an improvement of this environment. This programme should focus on the study of macrobenthic community's structure and on those selected parameters which have been the major structuring factors for these communities.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Spatial and temporal variation of the benthic macrofauna in a grossly polluted estuary from southwestern Spain

2009

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“…Sediments contaminated with heavy metals have been found to enter aquatic environments via several pathways, including atmospheric deposition, industrial activities and agricultural activities [5][6][7][8]. When compared with the previous two pathways, agricultural activities are known to be significant non-point sources of heavy metals in the environment [9,10].…”

Section: Introductionmentioning

confidence: 99%

Heavy metal sources and associated risk in response to agricultural intensification in the estuarine sediments of Chaohu Lake Valley, East China

Tang

Shan

Zhang

et al. 2010

Journal of Hazardous Materials

200

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a b s t r a c tIn this study, the source and risk associated with heavy metals in the estuarine sediments of Chaohu Lake Valley in East China were studied. The results demonstrated that most metal contents (Cd, Pb and Zn) increased continuously from 0.21, 8.05 and 73.76 mg/kg in the substrate to 0.33, 17.20 and 100.22 mg/kg in the surface sediments on average, respectively, in all ten estuaries evaluated. In addition, the high proportion of chemically reactive forms of Cd (18.10-33.60%) implied a moderately high risk, while the risk associated with Pb and Zn was moderate in most estuaries. Enrichment factor (EF) and cluster analysis (CA) were conducted to assess the metal sources. The EF values of Cd, Pb and Zn (4.96, 3.68 and 2.25, respectively) indicated that they had accumulated in the estuarine sediments. Additionally, CA suggested that their primary sources were anthropogenic, namely the extensive use of fertilizers. Therefore, heavy metal pollution due to agricultural intensification in Chaohu Lake Valley should be taken into account during the formation of valley management strategies for the water environment.

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“…The dissected parts were pooled into eight different parts namely; scales, muscle, bone, gills, operculum, intestine, liver and cartilage. All the eight parts were dried at 80˚C according to [16] ( Mucha et al, 2003) until a constant dry weight.…”

Section: Methodsmentioning

confidence: 99%

Correlations between Geo-Chemical Speciation of Heavy Metals (Cu, Zn, Pb, Cd and Ni) in Surface Sediments and Their Concentrations in Giant Mudskipper (<i>Periophthalmodon schlosseri</i>) Collected from the West Coast of Peninsular Malaysia

Buhari¹,

Ismail²

2016

GEP

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Macrobenthic community in the Douro estuary: relations with trace metals and natural sediment characteristics

Cited by 307 publications

References 26 publications

Spatial and temporal variation of the benthic macrofauna in a grossly polluted estuary from southwestern Spain

Spatial and temporal variation of the benthic macrofauna in a grossly polluted estuary from southwestern Spain

Heavy metal sources and associated risk in response to agricultural intensification in the estuarine sediments of Chaohu Lake Valley, East China

Correlations between Geo-Chemical Speciation of Heavy Metals (Cu, Zn, Pb, Cd and Ni) in Surface Sediments and Their Concentrations in Giant Mudskipper (<i>Periophthalmodon schlosseri</i>) Collected from the West Coast of Peninsular Malaysia

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Macrobenthic community in the Douro estuary: relations with trace metals and natural sediment characteristics

Cited by 307 publications

References 26 publications

Spatial and temporal variation of the benthic macrofauna in a grossly polluted estuary from southwestern Spain

Spatial and temporal variation of the benthic macrofauna in a grossly polluted estuary from southwestern Spain

Heavy metal sources and associated risk in response to agricultural intensification in the estuarine sediments of Chaohu Lake Valley, East China

Correlations between Geo-Chemical Speciation of Heavy Metals (Cu, Zn, Pb, Cd and Ni) in Surface Sediments and Their Concentrations in Giant Mudskipper (&lt;i&gt;Periophthalmodon schlosseri&lt;/i&gt;) Collected from the West Coast of Peninsular Malaysia

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Correlations between Geo-Chemical Speciation of Heavy Metals (Cu, Zn, Pb, Cd and Ni) in Surface Sediments and Their Concentrations in Giant Mudskipper (<i>Periophthalmodon schlosseri</i>) Collected from the West Coast of Peninsular Malaysia