| Autor: |
Campos, Bruno Galvão de, Moreira, Lucas Buruaem, Pauly, Guacira de Figueiredo Eufrasio, Cruz, Ana Carolina Feitosa, Monte, Christiane do Nascimento, Dias da Silva, Lílian Irene, Rodrigues, Ana Paula de Castro, Machado, Wilson, Abessa, Denis Moledo de Souza |
| Předmět: |
|
| Zdroj: |
Marine Pollution Bulletin; Sep2019, Vol. 146, p925-934, 10p |
| Abstrakt: |
The present study evaluated the ecological risk of metal contamination in sediments of Guanabara Bay (GB) by combining multiple lines of evidence (LOEs). Chemical analysis and a set of whole-sediment toxicity assays were conducted with Tiburonella viscana , Kalliapseudes schubartii , Anomalocardia flexuosa , and Nitocra sp. Results were integrated by multivariate analysis and qualitative methods. Additionally, a whole-sediment Toxicity Identification Evaluation technique (TIE) was applied to identify the chemical groups responsible for the effects. Sediments from harbor and industrial areas exhibited toxicity linked to moderate to high concentrations of Zn, Pb, Cu and Cr. The TIE technique confirmed such effects, but it also indicates the contribution of ammonia and organic compounds to the observed toxicity. Our results demonstrate that the combination of multiple LOEs improves the effectiveness of environmental risk assessment of chemical stressors and management of coastal ecosystems in tropical regions. Unlabelled Image • Ecological risk assessment of sediment contamination in a tropical bay • Multiple endpoints evaluated in whole-sediment toxicity testing • Bioavailable fraction of metals associated with toxic effects • The whole-sediment toxicity identification evaluation (TIE) was assessed. • A qualitative analysis integrating geochemical and ecotoxicological outcomes is provided. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
Full Text from ScienceDirect