Seasonal Patterns in Aquatic Bird Counts at Five Andean Lakes of Ecuador

Guevara, Esteban A.; Santander, Tatiana; Duivenvoorden, Joost F.

doi:10.1675/063.035.0413

Cited by 12 publications

(10 citation statements)

References 16 publications

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“…, Center for Research on the Cultural & Biological Diversity of Andean Rainforests , Guevara et al . ).…”

Section: Discussionmentioning

confidence: 97%

“…The remaining local species were not well represented in the archaeological sample but nonetheless suggest that the people of La Chimba hunted in nearby high Andean forests, p aramo and high-elevation wetlands. This group includes species that still occur within 20 km of the area today and some of which are Nearctic-Neotropical migrants ( Guevara et al 2012).…”

Section: Non-local Speciesmentioning

confidence: 99%

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Habitat change and trade explain the bird assemblage from the La Chimba archaeological site in the northeastern Andes of Ecuador

Tellkamp

2014

Ibis

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The nature of tree‐line habitats in the Andes has long been a contentious topic in the ecological literature. Palynological studies suggest that a combination of anthropogenic and natural processes throughout the Holocene contributed to its present form and species composition. This is the first study to use zooarchaeological evidence to reconstruct possible prehistoric changes in these alpine habitats. I analysed the remains of birds from the La Chimba archaeological site in northern Ecuador to assess changes in the bird tree‐line community over three distinct phases (Early, 2640–2390 year BP; Middle, 2390–1994 year BP; Late, 1994–1700 year BP) of this prehistoric settlement. The elevation of this site (3200 m) places it near a steep elevational gradient in vegetation, with the modern tree‐line here at 3500–3600 m. Therefore, non‐local specimens of birds from the lowlands would hint at long‐distance trade. The composition of birds changes through time: species associated with high montane forest and shrubby páramos decrease and species from dry or open montane habitats increase. This trend is dominated by the decrease of Curve‐billed Tinamous Nothoprocta curvirostris (current elevational range 3000–3900 m) and a corresponding increase of specimens of Andean Tinamous Nothoprocta pentlandii (current elevational range 1000–2300 m). The large number of Andean Tinamous is surprising given that presently it occurs no closer than 300 km to the south of the La Chimba site. Overall, 18 of the 43 species of birds identified from La Chimba are likely to be the result of trade. This includes species from the eastern and western lowlands of Ecuador and one possible long‐distance transport from Peru. Prehistoric trade of birds and bird parts was probably common, and prehistoric anthropogenic landscape change and trade in birds should be considered as alternative explanations for species with disjunct populations in and across the Andes.

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“…, Center for Research on the Cultural & Biological Diversity of Andean Rainforests , Guevara et al . ).…”

Section: Discussionmentioning

confidence: 97%

Section: Non-local Speciesmentioning

confidence: 99%

Habitat change and trade explain the bird assemblage from the La Chimba archaeological site in the northeastern Andes of Ecuador

Tellkamp

2014

Ibis

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“…Esta especie posee varios registros históricos y actuales en la región andina del norte del país [17,18,19,20]; y, un registro fotográfico de la hoya de Loja, reportado en el año 2003 por J. F. Freile y J. M. Carrión [9].…”

Section: Neotropic Cormorant Phalacrocorax Brasilianus (Lc)unclassified

“…El registro documentado más cercano de la especie se ubica cerca de la ciudad de Cuenca, en la provincia del Azuay, a más de 120 km al norte de la hoya de Loja [19]; sin embargo, existen también varios reportes no publicados de la especie en el valle de Vilcabamba, a 30 km al sur de Loja (L. Ordóñez-Delgado obs. pers.…”

Section: Common Gallinule Gallinula Galeata (Lc)unclassified

Registros inusuales de aves en la hoya de Loja, Andes sur del Ecuador

Ordóñez-Delgado

Reyes-Bueno

Orihuela-Torres

et al. 2016

Av. Cienc. Ing. (Quito)

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We present updated data on the distribution of 20 species of birds of Ecuador, 16 of them are registered for the first time within an inter-Andean valley (Hoya de Loja) galeata han sido registradas previamente en el área de estudio, sin embargo, para estas especies se presentan nuevas localidades de registro, todas asociadas a pequeñas lagunas existentes alrededor de la ciudad de Loja. Esta información permite incrementar el conocimiento sobre la distribución geográfica y altitudinal de estas aves en el sur de Ecuador.

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“…Fulica ardesiaca es abundante en el Lago San Pablo, una laguna interandina del Ecuador [20]. Los registros aquí presentados se efectuaron en el Parque Acuático Araque (0 o 12'22.34" N, 78 o 12'26.52" W, 2650 m), cantón Otavalo, provincia de Imbabura, Ecuador (Fig.…”

unclassified

Otro registro de leucismo parcial en la Focha Andina Fulica ardesiaca (Aves: Gruiformes: Rallidae) en Ecuador

Valenzuela

González

2016

Av. Cienc. Ing. (Quito)

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A new case of partial leucism is described from an individual of Andean Coot Fulica ardesiaca. It was observed and photographed in the Lake San Pablo, canton Otavalo, province of Imbabura, Ecuador. White marks were present on the wings, throat and venter, while the rest of the body showed the gray-black typical coloration.Keywords. Birds, Ecuador, Imbabura, leucism. ResumenSe describe un nuevo caso de leucismo parcial en un individuo de Focha Andina Fulica ardesiaca. Se observó y fotografío en el Lago San Pablo, cantón Otavalo, provincia de Imbabura, Ecuador. Marcas blancas estuvieron presentes en las alas, garganta y vientre, mientras que el resto del cuerpo presentaba la coloración gris-negruzca típica.Palabras Clave. Aves, Ecuador, Imbabura, leucismo.Las alteraciones cromáticas en las aves y otros vertebrados son producto de mutaciones, deficiencias en la dieta y decoloración por la luz [1][2][3]. Estas alteraciones pueden deberse al exceso o reducción de un pigmento y puede manifestarse en varias partes o en todo el cuerpo y de acuerdo a las características fenotípicas de los individuos se las reconoce como leucismo, albinismo, esquizocroismo y dilución [2,4,5,6,7,8,9]. El leucismo es la pérdida de un pigmento en particular o de varios pigmentos, sin afectar las partes desnudas por una expresión de alelos mutantes o desvíos en la manifestación genética que impiden la pigmentación de la pluma [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. Individuos con piel, pelo, plumaje o escamas completamente blancos son casos de leucismo completo, mientras que aquellos donde solo aparecen marcas blancas en ciertas partes del cuerpo son casos de leucismo parcial [9,14].

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Seasonal Patterns in Aquatic Bird Counts at Five Andean Lakes of Ecuador

Cited by 12 publications

References 16 publications

Habitat change and trade explain the bird assemblage from the La Chimba archaeological site in the northeastern Andes of Ecuador

Habitat change and trade explain the bird assemblage from the La Chimba archaeological site in the northeastern Andes of Ecuador

Registros inusuales de aves en la hoya de Loja, Andes sur del Ecuador

Otro registro de leucismo parcial en la Focha Andina Fulica ardesiaca (Aves: Gruiformes: Rallidae) en Ecuador

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