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Flutuações sazonais na abundância de Phalacrocorax brasilianus (Gmelin) no estuário do Saco da Fazenda, Itajaí, Santa Catarina, Brasil

Seasonal changes in the abundance of Phalacrocorax brasilianus (Gmelin) in the estuary of Saco da Fazenda, Itajaí, Santa Catarina, Brazil

Resumo

The Neotropic cormorant is one of the most comm on estuarine birds along SantaCatarina's shore, especially in artisanal fishery areas, where it obtains food easily. During the period from January, 1996 to December, 1999, and of January to December, 2001, the cormorants were monitored monthly in the estuary. The population P. brasilianus (Gmelin, 1789) presented seasonal changes with the same annual pattern of increment of the abundance. Significant differences were recorded between the seasons and the medium abundance of birds. Those differences can be attributed to the events of the life cicle of the species and the oscillations in the estuary water temperature.

Phalacrocorax brasilianus; seasonal changes; Neotropic cormorant


Phalacrocorax brasilianus; seasonal changes; Neotropic cormorant

Flutuações sazonais na abundância de Phalacrocorax brasilianus (Gmelin) no estuário do Saco da Fazenda, Itajaí, Santa Catarina, Brasil

Seasonal changes in the abundance of Phalacrocorax brasilianus (Gmelin) in the estuary of Saco da Fazenda, Itajaí, Santa Catarina, Brazil

Joaquim Olinto Branco

Centro de Ciências Tecnológicas da Terra e do Mar, Universidade do Vale do ltajaí. Caixa Postal 360, 88301-970 ltajaí, Santa Catarina, Brasil. E-mail: branco@cttmar.univali.br

ABSTRACT

The Neotropic cormorant is one of the most comm on estuarine birds along SantaCatarina's shore, especially in artisanal fishery areas, where it obtains food easily. During the period from January, 1996 to December, 1999, and of January to December, 2001, the cormorants were monitored monthly in the estuary. The population P. brasilianus (Gmelin, 1789) presented seasonal changes with the same annual pattern of increment of the abundance. Significant differences were recorded between the seasons and the medium abundance of birds. Those differences can be attributed to the events of the life cicle of the species and the oscillations in the estuary water temperature.

Key words: Phalacrocorax brasilianus, seasonal changes, Neotropic cormorant

Texto completo disponível apenas em PDF.

Full text available only in PDF format.

Recebido em 20.V.2002; aceito em 13.IX.2002.

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Datas de Publicação

  • Publicação nesta coleção
    11 Maio 2009
  • Data do Fascículo
    Dez 2002

Histórico

  • Recebido
    20 Maio 2002
  • Aceito
    13 Set 2002
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