Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.18/4479
Título: Environmental risk assessment in a contaminated estuary: An integrated weight of evidence approach as a decision support tool
Autor: Caeiro, Sandra
Vaz-Fernandes, Paula
Martinho, Ana Paula
Costa, Pedro
Silva, Maria João
Lavinha, João
Matias-Dias, Carlos
Machado, Ausenda
Castanheira, Isabel
Costa, Maria Helena
Palavras-chave: Environmental Risk Assessment
Integrative Management
Human and Ecosystem Health
Combined Pollutants
Weight of Evidence
Expert Judgment
Sado Estuary
Segurança Alimentar
Determinantes da Saúde e da Doença
Genotoxicidade Ambiental
Data: 7-Out-2016
Editora: Elsevier
Citação: Ocean Coast Manage. 2016. Epub 2016 Oct 7. doi: 10.1016/j.ocecoaman.2016.09.026. [Epub ahead of print]
Resumo: Environmental risk assessment of complex ecosystems such as estuaries is a challenge, where innovative and integrated approaches are needed. The present work aimed at developing an innovative integrative methodology to evaluate in an impacted estuary (the Sado, in Portugal, was taken as case study), the adverse effects onto both ecosystem and human health. For the purpose, new standardized lines of evidence based on multiple quantitative data were integrated into a weight of evidence according to a best expert judgment approach. The best professional judgment for a weight of evidence approach in the present study was based on the following lines of evidence: i) human contamination pathways; ii) human health effects: chronic disease; iii) human health effects: reproductive health; iv) human health effects: health care; v) human exposure through consumption of local agriculture produce; vi) exposure to contaminated of water wells and agriculture soils; vii) contamination of the estuarine sedimentary environment (metal and organic contaminants); viii) effects on benthic organisms with commercial value; and ix) genotoxic potential of sediments. Each line of evidence was then ordinally ranked by levels of ecological or human health risk, according to a tabular decision matrix and expert judgment. Fifteen experts scored two fishing areas of the Sado estuary and a control estuarine area, in a scale of increasing environmental risk and management actions to be taken. The integrated assessment allowed concluding that the estuary should not be regarded as impacted by a specific toxicant, such as metals and organic compounds hitherto measured, but by the cumulative risk of a complex mixture of contaminants. The proven adverse effects on species with commercial value may be used to witness the environmental quality of the estuarine ecosystem. This method argues in favor of expert judgment and qualitative assessment as a decision support tool to the integrative management of estuaries. Namely it allows communicating environmental risk and proposing mitigation measures to local authorities and population under a holistic perspective as an alternative to narrow single line of evidence approaches, which is mandatory to understand cause and effect relationships in complex areas like estuaries.
Peer review: yes
URI: http://hdl.handle.net/10400.18/4479
DOI: 10.1016/j.ocecoaman.2016.09.026
ISSN: 0964-5691
Versão do Editor: http://www.sciencedirect.com/science/article/pii/S0964569116302216
Aparece nas colecções:DAN - Artigos em revistas internacionais
DEP - Artigos em revistas internacionais
DGH - Artigos em revistas internacionais

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