Resumen de FMI 5000: um projecto sobre mudanças ambientais holocénicas

Ana Ramos Pereira, Catarina Ramos, Jorge Trindade, Joao Araújo-Gomes, Jorge Rocha, Helena Maria Granja, Luis Gonçalves, António M. Monge Soares, José Matos Martins

• English

  FMI 5000. A project on the environmental changes during the holocene This paper presents the aims, the proposed methodology and the cases to be studied within the FMI 5000 . Environmental Changes: Fluvio.marine interactions over the last 5000 years (Project FCT no: PTDC/CTE.GIX/ 104035/2008). The estuarine environments are sensitive areas in the climate change and sea level rise framework, as they are in the interface between fluvial and marine dynamics. They are also strategic areas because of their great biodiversity and the various economic activities they support. These environments record the sea level changes as well as the changes in their drainage basin, whether they are natural or man induced. The goal of the project is to evaluate the balance between marine and fluvial influences, the answers to climatic events and the land use changes impacts, in a 5000 years�f time window. The estuaries of Rio Neiva, of Rio Alcabrichel and of Ribeira de Bensafrim were chosen to develop this research; the first two are located on the western coast and the third one in the Algarve southern coast.

• português

  Apresenta.se, de forma sumaria, o Projecto FMI 5000 . Enviromental Changes: Fluvio.marine interactions over the last 5000 years (Projecto FCT no: PTDC/ CTE.GIX/ 104035/2008). Os ambientes estuarinos constituem uma das areas mais sensiveis, no quadro das alteracoes climaticas e da subida do nivel do mar, porque se situam na interface entre as influencias fluviais e marinhas e sao o suporte, nao so de areas humidas de grande biodiversidade, mas tambem de actividades economicas de importancia estrategica.

  Estes ambientes registam as mudancas do nivel do mar e as modificacoes operadas nas bacias hidrograficas, quer naturais quer induzidas pela accao humana. Constitui objectivo deste projecto a avaliacao do balanco entre as influencias marinhas e fluviais, as respostas a eventos climaticos e o impacto das mudancas de uso do solo, numa janela temporal de 5000 anos. Os estuarios escolhidos sao o do Rio Neiva, do Rio Alcabrichel, na costa Ocidental de Portugal continental, e da Ribeira de Bensafrim, no Barlavento algarvio.