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| Natura: | Artículo científico |
| Lingua: | en |
| Pubblicazione: |
Associação Portuguesa dos Recursos Hídricos
2014
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| Accesso online: | https://www.redalyc.org/articulo.oa?id=388340107003 |
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Sommario:
- Adaptation of macroalgal indexes to evaluate the ecological quality of coastal waters in oceanic islands with subtropical influence: the Azores (Portugal) Daniela Gabriel Joana Micael Manuela I. Parente Ana C. Costa Ciencias de la Tierra Macroalgae Oceanic Islands Ecological Quality Index Water Framework Directive Due to their sedentary characteristic and the sensibility of certaintaxato excessive nutrients or toxic substances, the benthic macroalgalassemblage of a given locality reflects the effects of long-term exposure to pollution. For this reason, seaweeds have been used to assess theenvironmental condition of coastal communities.Since the Water Framework Directive from the European Union (WFD/EU) was launched, several ecological indexes have beendeveloped for ecological quality assessment and monitoring. Those indexes are based on different features that can be easily observed andcombined into a single value, which in turn is translated to stakeholders as an ecological status.In the present study, four of the main indexes based on macroalgal abundance and composition were used to classify the coastalwaters of the Azorean islands: the Greek EEI (Ecological Evaluation Index), the British RSL (Reduced Species List Rocky Shore Tool),the Spanish CFR (Quality of Rocky Bottoms Index) and the Portuguese MarMAT (Marine Macroalgae Assessment Tool). The metricsestablished in those tools were adapted to allow their application in this archipelago of subtropical influence.All the applied indexes resulted in at least a “GOOD” ecological status for the majority of the sampled sites. The differences inmetrics and efficiencies of the indexes are discussed, with the most recent tools proving to be more precise and in accordance withother indicators. The increase of different sampling sites as well as the comparison with areas more impacted by human activities is stillnecessary to reinforce and validate the preliminary results presented here. 2014 artículo científico 1646-8872 https://www.redalyc.org/articulo.oa?id=388340107003 en http://www.redalyc.org/revista.oa?id=3883 Revista de Gestão Costeira Integrada - Journal of Integrated Coastal Zone Management application/pdf Associação Portuguesa dos Recursos Hídricos Revista de Gestão Costeira Integrada - Journal of Integrated Coastal Zone Management (Portugal) Num.2 Vol.14