Abstract:

Contributions to applied ecology to wildlife and natural areas. VII Available methods, their limitations and aplicability for quantitative studies for avian communities in some different aquatic habitats in south of Argentina. The importance of quantitative studies (census, sampling and index) of bird colonies and communities is emphasized. This kinds of information is needed in all programs of investigation and conservation. It is also important for detailed understanding of the dynamic of avian population and bioenergetic interelationahips. The diverse censal methods were applied in the fleld in the following fresh-water and marine habitats: 1) Fresh-water bird communities (Laguna Blanca, Neuquén); 2) Patagonian seacoast (península Valdés-Bahía Janssen-Bahía Bustamante, Chubut); 3) Oceanic and pelagic environment (Puerto Argentino-Puerto San Carlos, Islas Malvinas). The limitation of the different methods used by author are discussed.