Seasonal and Water Mass Size Effects on the Abundance and Diversity of Waterbirds in a Patagonian National Park

Over an 18-month period regular counts were made of the water birds inhabiting lakes and ponds in the Lanín National Park in Argentinean Patagonia. A total of 130 bird surveys were conducted on 21 wetland areas, detecting 6,364 individuals belonging to 27 species from nine families. The most abundan...

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Bibliographic Details
Published in:Waterbirds (De Leon Springs, Fla.) Fla.), 2009-03, Vol.32 (1), p.25-35
Main Authors: Pescador, Moisés, Peris, Salvador
Format: Article
Language:English
Subjects:
Anas flavirostris
Anas specularis
Autumn
bird censuses
Birds
Bodies of water
Freshwater
Fulica armillata
Fulica leucoptera
Habitat conservation
National parks
Patagonia
Phalacrocorax olivaceus
Platalea
Podiceps major
richness
Summer
Surface areas
Tachyeres patachonicus
Waterfowl
wetland surface
Wetlands
Winter
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Summary:Over an 18-month period regular counts were made of the water birds inhabiting lakes and ponds in the Lanín National Park in Argentinean Patagonia. A total of 130 bird surveys were conducted on 21 wetland areas, detecting 6,364 individuals belonging to 27 species from nine families. The most abundant and frequent species were Cloephaga poliocephala, Anas flavirostris, Fulica armillata and Fulica. leucoptera. Species richness was higher in spring and summer than in autumn and winter, involving 31 and 27 expected species, respectively. In contrast, bird abundance did not differ between season. The presence and abundance of bird species with respect to the surface area of the water body highlights the importance of certain lakes in particular. Thus, small water bodies (
ISSN:1524-4695
1938-5390
DOI:10.1675/063.032.0103