Antioxidant enzyme activities in fluvial biofilms as biomakers of metal pollution
The present thesis aims to evaluate the use of antioxidant enzyme activities (AEA) of biofilm communities as biomarkers of metal pollution (mainly Zn) in fluvial ecosystems. In order to test AEA as biomarkers of metal pollution as well as their responses to environmental variables, several ecotoxico...
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| Formato: | tesis doctoral |
| Estado: | Versión publicada |
| Fecha de publicación: | 2013 |
| País: | España |
| Recursos: | CBUC, CESCA |
| Repositorio: | TDR. Tesis Doctorales en Red |
| OAI Identifier: | oai:www.tdx.cat:10803/110519 |
| Acesso em linha: | http://hdl.handle.net/10803/110519 |
| Access Level: | acceso abierto |
| Palavra-chave: | Activitats enzimàtiques antioxidants Actividades enzimáticas antioxidantes Antioxidant enzyme activities Estrès oxidatiu Estrés oxidativo Oxidative stress Zinc Cinc Zn Ecotoxicologia Ecotoxicología Ecotoxicology Ecosistemes fluvials Ecosistemas fluviales Fluvial ecosystems Contaminació per metalls Contaminación por metales Metal pollution 574 |
| Resumo: | The present thesis aims to evaluate the use of antioxidant enzyme activities (AEA) of biofilm communities as biomarkers of metal pollution (mainly Zn) in fluvial ecosystems. In order to test AEA as biomarkers of metal pollution as well as their responses to environmental variables, several ecotoxicological experiments have been performed. A zoom from field studies (with high ecological realism) to microcosm experiments (under controlled conditions) has been done to fill the gap between both approaches and understand AEA responses under a multiple-stress (environmental and metallic) scenario. The field studies were carried out in the Riera d’Osor, a tributary of the Ter, located in the region of La Selva (Girona province) |
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