Utilize este identificador para referenciar este registo: http://hdl.handle.net/10362/4987
Título: Assessing the balance between biodiversity conservation and coastal and estuarine management of the Sado Estuary Natural Reserve, Portugal, using BIO-SAFE
Autor: Moreira, Miguel Alexandre Ribeiro
Orientador: Costa, Maria Helena
Lenders, H.
Data de Defesa: 2010
Editora: Faculdade de Ciências e Tecnologia
Resumo: Coastal and Estuarine management is one emergent topic nowadays. Physical reconstruction and management plans are currently being executed where the major goals are flood risk reduction,ecological rehabilitation and economic development. The ecological consequences of these measures must be evaluated in a way that ensures attuning of policy goals concerning conservation of biodiversity. The estuarine systems are important for the conservation and restoration of biodiversity, since they are one of the most productive ecosystems on the planet. Recently, a novel Spreadsheet Application For Evaluation of impacts of physical reconstruction measures on BIOdiversity (i.e. BIO-SAFE) in riverine habitats has been developed (Lenders et al., 2001, De Nooij et al., 2004, De Nooij, 2006). In this study, BIO-SAFE has been adapted to the Portuguese Sado River Estuary, with the direct application on the Natural Reserve of the cited estuarine area. BIO-SAFE is a policy and legislation based assessment model that quantifies biodiversity values in riverine areas for several taxonomic groups and landscape ecological units (ecotopes) on the basis of the policy status and habitat demands of riverine characteristic species. The model uses data on presence of species and riverine landscape ecological units for different levels of spatial scale. In this study, a new version of the model was developed for the Sado Estuary Natural Reserve (RNES), called BIO-SAFE Sado. To develop the Sado version, it was necessary to adapt the three main components of the conceptual framework of BIO-SAFE. These comprise (1) a database with the relevant policy and/or legislation RNES indigenous species, (2) a specific ecotope typology for the RNES area and (3) a weighted set of policy and legislation based valuation criteria for biodiversity. In addition to these research activities, the model has been implemented in the MS Excel spreadsheet. After implementation of these three components and the programming of the different types of indices and algorithms in MS Excel, the program calculated all relevant indexes and scores. The BIOSAFE Sado model was used for two types of analysis: (a) valuations of ecotopes (potential situation)and transitions between ecotopes and (b) valuation of the actual situation. Both approaches were made on the level of species individually and taxonomic groups at two scale levels (ecotopes and levels). The taxonomic groups higher plants, birds, fish and mammals are amongst the most important taxa regarding endangered and protected biodiversity in the study area. The ecotope valuation show that the most important ecotope types regarding protected and endangered biodiversity in the RNES are the Waterlines for the aquatic ecotope types and the Dune bushes and the indigenous forestry ecotope types Pinewood and Cork oak system for the terrestrial systems. The valuation of the actual situation shows the same results for the most important taxa and ecotopes present in the RNES, which was expected since the saturation indices showed high values, indicating that most of the potential species are actually present on the area.
Descrição: Dissertação apresentada na Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para obtenção do grau de Mestre em Engenharia do Ambiente, perfil de Engenharia Ecológica
URI: http://hdl.handle.net/10362/4987
Aparece nas colecções:FCT: DCEA - Dissertações de Mestrado

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