Modern Dinoflagellate Cyst Abundance and Trace Metals as Biomonitoring Tools in a Tropical Bay in Brazil

Freitas, Alex da Silva de; Aguiar, Valquíria Maria de Carvalho; Neto, José Antônio Baptista

doi:10.2112/jcoastres-d-21-00030.1

Cited by 2 publications

(4 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(2014) highlighted that several trace elements, such as Pb, Ni, Cu, Cd, and Zn, were found at high levels in the Canal do Cunha basin. These trace elements were observed in the surface sediments from other parts of Guanabara Bay (Aguiar et al ., 2018; Baptista Neto et al ., 2000) and showed a strong correlation with some dinocysts (Freitas, Aguiar, and Baptista Neto, 2021). The majority of samples analysed in the present study showed extremely high values when compared to background values for Guanabara Bay (Baptista Neto et al ., 2000; Monteiro et al ., 2012).…”

Section: Discussionmentioning

confidence: 96%

“…Therefore, trophic transfers occur in marine food webs, thereby enhancing the risk assessment of many elements in wildlife and human health (Gao et al ., 2021). The present study showed a strong presence of L. machaerophorum , which is considered a good bioindicator from eutrophized areas (Balkis et al ., 2016; Freitas, Aguiar, and Baptista Neto, 2021).…”

Section: Discussionmentioning

confidence: 99%

“…However, the use of different organisms in eutrophic environments has been used as an efficient tool to verify the level of local pollution. Freitas et al (2021) observed a strong correlation between dinoflagellate cysts and trace elements in an impacted region of Guanabara Bay, as they observed a high level of pollution in Nitero ´i Harbour through analyses with Vibrio fischeri bacteria. Likewise, Campos et al (2019) analysed surface sediments and, through acute and chronic toxicology analyses using different organisms, observed different pollution rates for Guanabara Bay.…”

Section: Introductionmentioning

confidence: 95%

“…However, the use of different organisms in eutrophic environments has been used as an efficient tool to verify the level of local pollution. Freitas et al . (2021) observed a strong correlation between dinoflagellate cysts and trace elements in an impacted region of Guanabara Bay, as they observed a high level of pollution in Niterói Harbour through analyses with Vibrio fischeri bacteria.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Chemical and Biological Indicators of Environmental Pollution in the Canal do Cunha (Guanabara Bay, Rio de Janeiro, Brazil): Analysis and Determination of Toxins

de Freitas,

de Oliveira Santos,

dos Santos

et al. 2023

Journal of Coastal Research

Self Cite

View full text Add to dashboard Cite

Pollutants and biological data were assessed in surface sediments from an urbanized and hypereutrophic bay in Brazil. The surface sediment samples contained coarse to fine grains. The samples were analysed using four tools that followed standard methodologies. Pollutants were observed in several sediment samples, as was observed with the pseudototal trace elements. Dinoflagellate cysts showed an indication of a eutrophic environment with the presence of L. machaerophorum. On the other hand, the Vibrio fischeri bioassay demonstrated high toxicity in this area. The obtained data demonstrate the high level of pollution in the area due to a high input of untreated sewage and a large number of industries close to the collection points. Therefore, the Canal do Cunha basin can be considered an outflow area for different pollutant residues being transported into Guanabara Bay.

show abstract