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Ducks and the risk of avian influenza in Portugal
Fabião, António; Rodrigues, David; Figueiredo, Maria Ester; Encarnação, VitorThe outbreak of highly pathogenic avian influenza of the H5N1 virus subtype in Western European countries induced the fear that it could reach Portugal through wild bird migration. Ducks, geese and swans are some of the bird groups with higher prevalence of influenza virus that might be vectors of virus dissemination, considering the existing studies on low pathogenic subtypes that are common in nature (Olsen e...
Waterfowl marking in Portugal: main results and future perspectives
Fabião, António; Rodrigues, David; Figueiredo, Maria Ester; Tenreiro, PauloThe recent integrated monitoring of some Portuguese waterfowl populations has allowed several studies of their ecology, biology and management (Figueiredo 2003, Rodrigues 2001, Rodrigues & Fabião 1997, Rodrigues & Tenreiro 1996, Rodrigues et al. in press). This paper reports and discusses some results related to capture and marking processes used with waterfowl in Portugal. We started the regular capture of wat...
Importância do estuário para os anatídeos e os ralídeos do Baixo Mondego
Fabião, António; Rodrigues, David; Figueiredo, Maria Ester; Tenreiro, PauloEste trabalho pretende compilar a informação sobre a real importância do estuário do Mondego para as populações de anatídeos e ralídeos do Baixo Mondego, assim como identificar as ameaças para estas espécies e sugerir medidas de ordenamento e gestão
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