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- Adaptive-participative sustainability indicators in marine protected areas: designPublication . Marques, A. S.; Ramos, Tomás B.; Caeiro, Sandra; Costa, Maria HelenaRecently there has been an effort to put in practice integrated management plans in Marine Protected Areas (MPA) not only because of their high natural and cultural importance but also due to usual conflicts related to local activities. These plans should include the use of adaptive sustainability indicators that reflect stakeholders concerns, and community interests, allowing a better assessment, management and reporting. An adequate set of indicators for the MPA should help their managers to improve management policies in order to achieve better decision making processes. This study aimed to develop a set of adaptive-participative sustainability indicators (SDI) for the assessment, management and reporting of MPAs that include, through the all process, the participation of local stakeholders at every levels, integrating the stakeholders knowledge and perceptions about the SDI meaning and a self-assessment of the SDI state produced also by the stakeholders. The proposed approach was tested in Luiz Saldanha’s Marine Park, located in South East of Portugal between the municipalities of Sesimbra and Setúbal. The framework to design the SDI comprised four phases: i) an international analysis of SDI sets for coastal zones and MPAs; ii) a participatory process, where the stakeholders had the possibility to state their concerns through an online and face to face questionnaire surveys about the strengths and weaknesses of the MPA; iii) an analysis conducted by a team of experts to reach a set of indicators that include the main relevant aspects of environmental, socioeconomic, and governance issues, taking into account the information from the first two phases and iv) a workshop and questionnaires held to assess the stakeholders’ global views and perception about the selected set of indicators and each indicator’s relative importance. This study showed the importance of a dynamic participative process involving the local stakeholders. It is concluded that this methodology allows a better understanding of each indicator by the local stakeholders and how it could respond to their concerns. It should also help the MPA managers, to define the most suitable management actions and monitor the management plan itself.
- Assessing heavy metal contamination in Sado EstuaryPublication . Caeiro, Sandra; Costa, Maria Helena; Ramos, Tomás B.; Fernandes, F.; Silveira, N.; Coimbra, Ana Paula; Medeiros, G.; Painho, MarcoThe Sado Estuary in Portugal is a good example of a site where human pressures and ecological values collide with each other. An overall contamination assessment has never been conducted in a way that is comprehensible to estuary managers. One of the aims of this work was to select different types of index to aggregate and assess heavy metal contamination in the Sado Estuary in an accessible manner. Another aim was to use interpolation surfaces per metal to compare and gauge the results of the indices and to assess the contamination separately per metal. Seventy-eight stations were sampled within the main bay of the estuary and a set of heavy metals and metalloids was established, Cd, Cu, Pb, Cr, Hg, Al, Zn and As. The sediment fine fraction content, organic matter and redox potential were also analysed. Various indices for contamination, background enrichment and ecological risk were used, tested, compared and performance-evaluated. All metals and metalloids were strongly correlated, and the indices appear to reflect heavy metal variability satisfactorily. Difficulties were found in some indices regarding boundary definition (minimum and maximum) and comparability with other estuaries, thus better methods of standardization should be a priority issue. According to the index that has the highest performance score within the group of ecological risk indices – the Sediment Quality Guideline Quotient – only 3% of the stations are highly contaminated and register a high potential for observing adverse biological effects, whereas 47% display moderate contamination. This index can be complemented with the contamination index, which allows more site-specific and accurate information on contaminant levels. If the aim of work on contamination evaluation is to assess the overall contamination of a study area, the indices are highly appropriate. For spatial and source evaluation per metal, interpolation surfaces should also be used.