Trace Metal Concentrations in Zooplankton from the Eastern Arabian Sea and Western Bay of Bengal

Rejomon, G.; Balachandran, K.K.; Nair, M.; Joseph, T.; Kumar, Pankaj; Achuthankutty, C.T.; Nair, K.K.C.; Pillai, N G K

doi:10.1080/15275920701506193

Cited by 34 publications

(11 citation statements)

References 14 publications

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“…Coastal zooplanktons are under direct anthropogenic influence from the coast, with heavier riverine influence than offshore waters. Offshore waters are influenced by basin‐scale physical mixing processes, including cyclonic eddies during winter monsoon in the western Bay of Bengal (Rejomon et al,2008).…”

Section: Discussionmentioning

confidence: 99%

“…To explore seasonal variations in the trace metal concentration of seawater and zooplankton in the Bay of Bengal, we compared the average metal concentration in seawater and zooplankton during summer monsoon from the Bay of Bengal (Table IX), to the reported average metal concentrations in seawater (μg L −1 ) [Fe‐2.34, Co‐0.076, Ni‐0.046, Cu‐0.895, Zn‐1.38, Cd‐0.026, and Pb‐0.306] and zooplankton (μg g −1 ) [Fe‐14073, Co‐24.2, Ni‐29.5, Cu‐46.2, Zn‐2000, Cd‐18.7, and Pb‐6.55] during winter monsoon from the Bay of Bengal (Rejomon et al,2008). The average metal concentrations in the seawater and zooplankton during the summer monsoon (present study) are considerably higher than those found during the winter monsoon.…”

Section: Discussionmentioning

confidence: 99%

“…However natural events like algal blooms often contribute to metal availability and these phenomena are likely to influence the ecological system of the East and West Coast of India (Jyothibabu et al,2003,2008; Madhu et al,2006; Anoop et al,2007). Spatial studies of metal concentrations in surface zooplankton from the Indian exclusive economic zone (EEZ) of the Arabian Sea and Bay of Bengal have revealed particularly high metal concentrations at river mouths, upwelling zones, and eddy mixing zones, in comparison to other areas (Rejomon,2005; Rejomon et al,2008). These areas were referred to as metal‐anomalies within the zooplankton populations (Rejomon,2005; Rejomon et al,2008), and two mechanisms were hypothesized to have caused these observations: (1) increased metal bioavailability may have caused more effective uptake mechanisms to have evolved due to either specific accumulation strategies of organisms; or (2) a spatial heterogeneity of metal absorption from food items due to different feeding strategies between zooplankton populations from river mouths, upwelling zones, and eddy mixing zones.…”

Section: Introductionmentioning

confidence: 99%

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Trace metal dynamics in zooplankton from the Bay of Bengal during summer monsoon

Rejomon

Kumar

Nair

et al. 2010

Environmental Toxicology

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Trace metal (Fe, Co, Ni, Cu, Zn, Cd, and Pb) concentrations in zooplankton from the mixed layer were investigated at 8 coastal and 20 offshore stations in the western Bay of Bengal during the summer monsoon of 2003. The ecotoxicological importance of trace metal uptake was apparent within the Bay of Bengal zooplankton. There was a distinct spatial heterogeneity of metals, with highest concentrations in the upwelling zones of the southeast coast, moderate concentrations in the cyclonic eddy of the northeast coast, and lowest concentrations in the open ocean warm gyre regions. The average trace metal concentrations (μg g⁻¹) in coastal zooplankton (Fe, 44894.1 ± 12198.2; Co, 46.2 ± 4.6; Ni, 62.8 ± 6.5; Cu, 84.9 ± 6.7; Zn, 7546.8 ± 1051.7; Cd, 46.2 ± 5.6; Pb, 19.2 ± 2.6) were higher than in offshore zooplankton (Fe, 3423.4 ± 681.6; Co, 19.5 ± 3.81; Ni, 25.3 ± 7.3; Cu, 29.4 ± 4.2; Zn, 502.3 ± 124.3; Cd, 14.3 ± 2.9; Pb, 3.2 ± 2.0). A comparison of average trace metal concentrations in zooplankton from the Bay of Bengal showed enrichment of Fe, Co, Ni, Cu, Zn, Cd, and Pb in coastal zooplankton may be related to metal absorption from primary producers, and differences in metal concentrations in phytoplankton from coastal waters (upwelling zone and cyclonic eddy) compared with offshore waters (warm gyre). Zooplankton showed a great capacity for accumulations of trace metals, with average concentration factors of 4 867 929 ± 569 971, 246 757 ± 51 321, 337 180 ± 125 725, 43 480 ± 11 212, 1 046 371 ± 110 286, 601 679 ± 213 949, and 15 420 ± 9201 for Fe, Co, Ni, Cu, Zn, Cd, and Pb with respect to dissolved concentrations in coastal and offshore waters of the Bay of Bengal. © 2009 Wiley Periodicals, Inc. Environ Toxicol, 2009.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Trace metal dynamics in zooplankton from the Bay of Bengal during summer monsoon

Rejomon

Kumar

Nair

et al. 2010

Environmental Toxicology

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“…Regarding Zn and Cu the reported patterns are in good agreement with the literature obtained in the present study. High accumulation of Zn in zooplankton may be due to coprecipitation of Zn with calcium carbonate [34].…”

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confidence: 99%

Heavy metal concentrations in zooplankton of Sinop coasts of the Black Sea, Turkey

Bat

Üstün

Öztekin

2016

mbj

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Estimation of level contamination of marine ecosystems with heavy metals is important task in the field of MSFD. Total zooplankton samples were collected using a standard zooplankton net (mesh size=112 µm, mouth diameter=50 cm) from Sinop coast of the Black Sea, Turkey in 2011 and 2012. Concentrations of Al, As, Cu, Zn, Hg, Fe, Cd and Pb were determined in the total zooplankton samples. The average concentration of heavy metals followed order: Fe > Al >Zn > Pb > Cu > As > Cd > Hg. Estimated Hg was below the detection limit among all heavy metals in all samples. Fe was the most common heavy metal in total zooplankton samples present in all, Al was the other heavy metal commonly present in the samples. Pb showed high value (210 mg • kg-1) in total zooplankton. Similar to Pb, a high average concentration of As (40 mg • kg-1) was observed in total zooplankton. Cd was 1.1 mg • kg-1 .

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“…In general, they use a metal chemical analysis approach (Fang and Yang, 2010). Some studies have included biological parameters, emphasizing the monitoring of contaminants in organisms tissues (Rejomon et al, 2008). A new approach is the geochemical condition of surface sediments, by the elemental interactions, using statistical methods and factor analysis (Balachandran et al, 2006).…”

Section: Discussionmentioning

confidence: 99%

Ecotoxicological evaluation of sediments applied to environmental forensic investigation

Alves

Rietzler

2015

Braz. J. Biol.

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The present study aimed to evaluate the potential for using toxicity assays with sediment samples for the detection of water pollution caused by the discharge of tannery effluents into water bodies and its application to environmental forensic investigation. The study included ecotoxicological evaluation of sediments, survey of benthic organisms in the field, as well as chromium, cadmium and lead dosage which provided data for a sediment quality triad evaluation. The sediment samples showed acute and chronic toxicity to the bioindicators, low biodiversity of benthic macrofauna and high chromium concentration, reaching up to 4365 mg.Kg -1 . A close relationship was observed between the separate results of ecotoxicological sediment evaluation and the sediment quality triad. The sediment ecotoxicological assessment proved to be applicable to tracking sources of contamination related to tanneries and similar activities in environmental forensics.Keywords: environmental forensics, ecotoxicological evaluation of sediments, sediment quality triad, tannery effluents, toxicity of chromium. Avaliação ecotoxicológica de sedimentos aplicada à perícia criminal ambientalResumo O objetivo do presente estudo foi avaliar o potencial de aplicação de ensaios de toxicidade com amostras de sedimento para constatação de poluição aquática causada por lançamentos de efluentes de curtumes em cursos d'água e seu emprego na perícia criminal ambiental. O estudo incluiu avaliação ecotoxicológica de sedimentos, avaliação da fauna bentônica local e dosagem de cromo, cádmio e chumbo que forneceram dados para avaliação da tríade de qualidade dos sedimentos. As amostras de sedimentos mostraram efeito de toxicidade aguda e crônica aos bioindicadores, baixa biodiversidade da macrofauna bentônica e altas concentrações de cromo que chegaram a 4365 mg.Kg -1 . Houve uma estreita relação entre os resultados isolados da avaliação ecotoxicológica e a tríade de qualidade de sedimentos. A avaliação ecotoxicológica demonstrou ser aplicável na identificação de fontes de contaminação relacionadas a curtumes e atividades similares em perícias ambientais.Palavras-chave: perícia ambiental, avaliação ecotoxicológica de sedimentos, tríade de qualidade de sedimentos, efluentes de curtumes, toxicidade do cromo.

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Trace Metal Concentrations in Zooplankton from the Eastern Arabian Sea and Western Bay of Bengal

Cited by 34 publications

References 14 publications

Trace metal dynamics in zooplankton from the Bay of Bengal during summer monsoon

Trace metal dynamics in zooplankton from the Bay of Bengal during summer monsoon

Heavy metal concentrations in zooplankton of Sinop coasts of the Black Sea, Turkey

Ecotoxicological evaluation of sediments applied to environmental forensic investigation

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