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Registros recuperados: 4
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Waterbird occurrence and abundance in the Strobel Plateau, Patagonia, Argentina Hornero
Lancelotti,Julio L.; Pozzi,Luciana M.; Márquez,Federico; Yorio,Pablo; Pascual,Miguel A..
The Strobel Plateau is a conspicuous and representative basaltic plateau ("meseta") in the Patagonian steppe, Argentina. This plateau is dotted with more than 1500 shallow lakes, which are regularly used by waterbirds and support one of the main breeding populations of the near threatened Hooded Grebe (Podiceps gallardoi). We collected data on bird presence and abundance in 41 shallow lakes, covering a wide spectrum of the wetland environmental variability found in the area. We conducted six surveys from spring to fall between 2004 and 2006. We recorded a total of 18 waterbird species, which represent 5 different families. Anatidae was the family most represented with 12 species, accounting for 85% of the observed waterbirds. Waterbird distribution among...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Patagonia argentina; Podiceps gallardoi; Strobel Plateau; Waterbirds.
Ano: 2009 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0073-34072009000100003
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Aves acuáticas en el humedal urbano de Tres Puentes, Punta Arenas (53° S), Chile austral OceanDocs
Cárcamo, Jaime; Kusch, Alejandro; Gómez, Humberto.
Los humedales urbanos son sitios de alta biodiversidad pero que pueden estar bajo presión antrópica si no son bien manejados. En la ciudad de Punta Arenas (53°S), el humedal de Tres Puentes posee características únicas para conformar un sitio con todos los componentes de conservación (educación, investigación, desarrollo sostenible). Se reporta su composición y abundancia en especies de aves acuáticas durante 6 temporadas estivales. Se registraron 31 especies lo que corresponde al 50 % de las aves acuáticas continentales de la región de Magallanes. Se discute la variabilidad interanual y los posibles impactos producidos por el hombre.
Tipo: Journal Contribution Palavras-chave: Aquatic birds; Wetlands; Conservation; Waterbirds; Http://aims.fao.org/aos/agrovoc/c_36198.
Ano: 2008 URL: http://hdl.handle.net/1834/4175
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Richness, abundance and microhabitat use by Ardeidae (Aves: Pelecaniformes) during one seasonal cycle in the floodplain lakesof the lower Amazon River Rev. Bras. Zool.
Ferreira,Giulianne Sampaio; Santos,Danilo Augusto Almeida dos; Lopes,Edson Varga.
ABSTRACT The Amazon floodplains become periodically submerged as result of seasonal changes in the water levels throughout the year. These changes influence the availability of microhabitats and consequently the abundance of organisms in these ecosystems. In this study we investigated 1) how changes in the water level affect the richness and abundance of ardeid birds in the lowland floodplain lakes of the lower Amazon River, and 2) the microhabitats used by these birds throughout the seasonal cycle. Ten lakes were surveyed at each of the four phases of the seasonal cycle. In total, 3,280 individuals of 11 species were recorded. Of these, eight species occurred in the four phases, and three were observed in one or two phases. In the analysis including the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazonian; Aquatic macrophytes; Ecological partitioning; Waterbirds; Wetlands.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702019000100322
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Diet of the American mink Mustela vison and its potential impact on the native fauna of Navarino Island, Cape Horn Biosphere Reserve, Chile RChHN
SCHÜTTLER,ELKE; CÁRCAMO,JAIME; ROZZI,RICARDO.
Invasive exotic species of mammalian predators represent a major cause of vertebrate animal extinctions on islands, particularly those that lack native mammalian carnivores. In 2001, the American mink (Mustela vison) was recorded for the first time on Navarino Island, in the Cape Horn Biosphere Reserve (55° S) in Chile, representing the southernmost population of mink worldwide. In order to assess its potential impact on native fauna, we studied its diet on Navarino Island, as part of an integrative management program on invasive species. Over a three-year period (2005-2007) we collected 512 scats in semi-aquatic habitats: marine coasts, riparian and lake shores. Overall, the main prey was mammals (37 % biomass), and birds (36 %), followed by fish (24 %)....
Tipo: Journal article Palavras-chave: Conservation; Exotic mammals; Management; Mustelids; Waterbirds.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2008000400011
Registros recuperados: 4
Primeira ... 1 ... Última
 

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