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Hydrobiologia

, Volume 697, Issue 1, pp 111–125 | Cite as

Abundances of waterbird species on lakes in Argentine Patagonia as a function of season, lake size and the presence of mink

  • Moisés Pescador
  • Soledad Díaz
  • Salvador Peris
LIMNOLOGY AND AQUATIC BIRDS

Abstract

Regular counts from 2005 to 2009 were made of the waterbirds inhabiting lakes and ponds in Lanín National Park in the southwestern part of Neuquén Province, Argentina, a landscape dominated by Andean–Patagonian wetlands and forests. Bird surveys conducted on 21 wetland areas detected 8,311 individuals belonging to 27 species from 9 families. The most abundant and frequent species were Ashy-headed Goose (Chloephaga poliocephala), Speckled Teal (Anas flavirostris), Red-gartered Coot (Fulica armillata) and White-winged Coot (Fulica leucoptera). The presence and abundance of bird species with respect to wetland surface area was examined. Small lakes (<100 ha) had higher numbers of individuals, but some species such as the Neotropic Cormorant (Phalacrocorax olivaceus), Great Grebe (Podiceps major), Flying Steamer Duck (Tachyeres patachonicus) and Spectacled Duck (Anas specularis) were more abundant at larger lakes. Speckled Teal, Red Shoveler (Anas platalea) and Chiloe Wigeon (A. sibilatrix) were more common in small- and medium-sized lakes. Most waterbird species were found at a smaller percentage of the lakes where mink were present than at mink-free lakes. Although the ponds and lakes studied are protected within the network of this Argentine National Park, such protection is not implemented effectively. Hence, their future conservation faces several potential threats such as American mink expansion, tourism, fishing and hunting. This information could contribute to the development of management guidelines for the effective conservation of Patagonian wetlands.

Keywords

Ducks Predation Cloephaga poliocephala Anas flavirostris Fulica armillata Fulica leucoptera Neovison vison 

Notes

Acknowledgments

Partial financial support came from the Spanish MEC PR2009-0178. We wish to thank the park rangers and J. Sanguinetti (National Park staff) for logistic aid, local knowledge, and their time spent with us, and volunteers of Global Vision International for assistance with field-work. We greatly appreciate the collaboration of Dr. Victor Cussac for helping with data on lakes and the Ochoa family for their hospitality. An early draft was improved by comments of S.H. Hurlbert and two anonymous reviewers.

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Moisés Pescador
    • 1
  • Soledad Díaz
    • 2
  • Salvador Peris
    • 3
  1. 1.Facultad de Ciencias Agrarias y AmbientalesUniversidad de SalamancaSalamancaSpain
  2. 2.Lab. Ecotono-UNCOMA, CONICETBarilocheArgentina
  3. 3.Departamento de Biología Animal-Zoología, Facultad de BiologíaUniversidad de SalamancaSalamancaSpain

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