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Aves, Podilymbus podiceps , Ardea alba, Egretta thula, Nycticorax nycticorax, Ixobrychus exilis, Porzana carolina, Porphyrula martinica, Gallinula chloropus, Phalaropus tricolor, Vanellus resplendens: Distribution extensions, filling gaps, historical occurrence

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New information on the distribution of ten waterbird taxa from ten localities in Ecuador is presented
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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]. ...
... Se la ha reportado en algunas localidades andinas del norte del país [7,9] y en la carretera Loja-Cuenca en el año 2002 [20], pero no se contaba con registros previos de esta especie dentro de la hoya de Loja. ...
... El registro previo más cercano de la especie, corresponde a un individuo fotografiado en la carretera Loja-Cuenca en el año 2002 [20] a más de 100 km al norte de la hoya de Loja. ...
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Presentamos datos actualizados sobre la distribución de 20 especies de aves del Ecuador, 16 de estas registradas por primera ocasión dentro de la hoya de Loja, valle inter-Andino del sur del país: Podilymbus podiceps , Phalacrocorax brasilianus , Butorides striata , Bubulcus ibis , Ardea alba , Chondrohierax uncinatus , Rupornis magnirostris , Gallinula galeata , Megascops roboratus , Megaceryle torquata , Aulacorhynchus prasinus , Forpus coelestis , Psittacara erythrogenys , Grallaria guatimalensis , Pitangus sulphuratus , Pachyramphus homochrous , Turdus reevei , Sporophila corvina , Rhynchospiza stolzmanni , y Cardellina canadensis . Únicamente P. brasilianus, B. striata , B. ibis y G. 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.
... Esta especie posee una amplia distribución, se la encuentra desde Panamá hasta el norte de Argentina y el sur de Chile, siendo muy localista en las costas de Perú y el norte de Chile (Haase, 2011). En Ecuador se distribuye principalmente en la Amazonía norte y en la costa, en las provincias de Manabí, Guayas, Santa Elena y El Oro (Ridgely & Greenfield, 2001, 2006Haase, 2011). Además, posee algunos registros en el suroeste de la provincia de Loja (Macará, Zapotillo) (Best et al., 1993;Bonaccorso et al., 2007;Ordóñez-Delgado et al., 2016a, b), y reportes esporádicos de la zona de Nangaritza (Freile et al., 2014). ...
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Ardea cocoi (Garzón Cocoi) es una de las garzas de mayor tamaño de Ecuador, se consi-dera común bajo los 400 m s.n.m. en la Ama-zonía norte y gran parte de la costa centro sur del país, siendo inusuales los registros fuera de su área de distribución conocida. En este documento presentamos la segunda localidad andina de presencia de esta especie en el país, ésta se ubica a más de 500 km de los registros previos de la especie en esta región, e incrementa su distribución altitudinal en el sur del Ecuador hasta los 2193 m s.n.m. Ardea cocoi (Cocoi Heron) is one of the largest herons in Ecuador. It is commonly found under 400 m a.s.l. in the northern Amazon Region and most of the South Central Coastal Region. It is unusual to have records outside of its known distribution area. In this document we present the second Andean site where the specie has been found. This site is located 500 km further than the previous records, and the altitudinal range of A. cocoi in Southern Ecuador increases up to 2193 m a.s.l.
... Abril-Pulido et al. 2012) and elsewhere in Ecuador (e.g. Cisneros-Heredia 2006). For example, the Piura region has been surveyed previously to our record of Sora (Ugaz & Saldaña 2014, Saldaña et al. 2016) and this species was apparently absent even in wetlands of suitable habitat, such as in sites sampled in different seasons downstream of Rio Piura (I.S.S., pers. ...
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The Sora Porzana carolina is the most abundant rail of North America, and historical records (1877–1994) indicate Peru as the southern limit of its wintering (October–May) range. Here, we present data from three consecutive austral summers (February/2014 to March/2016) recording this species on wetlands in north Peru, which fill a geographic gap of approximately 1000 km between Tumbes and Lima regions. Based on our records and secondary sources for South America, we indicate that Sora probably follows two parallel migration routes in western South America: the Pacific Coast and the Andean routes. Another recent study recorded Sora in Cusco province, which suggests that Peruvian Andes wetlands may currently becoming more important as non-breeding sites for Nearctic migrant waterbirds. Unlike the sites of historical records of Sora in Peru, the wetlands on which this rail was recently recorded have no legal protection, deserving management policies and continued monitoring
... f This species has been observed at Lago San Pablo (Ridgely & Greenfield 2001a,b). g This record is from Lago Colta in Chimborazo Province (Cisneros-Heredia 2006). h This species is a passage migrant (Ridgely & Greenfield 2001a,b). ...
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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.
... No existe ningún estudio que provea datos reales de la diversidad o el estado y tendencias poblacionales de las aves tanto en humedales altoandinos, costaneros o amazónicos. Esto se refleja en la abundancia de " nuevos " registros de distribución previamente no conocidos de aves acuáticas (Cisneros-Heredia 2005, Henry 2005, Santander et al. datos sin publicar, este artículo). Esta falta de conocimiento hace que tanto las instituciones de control público (i.e. ...
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Resumen Se presenta información sobre nuevos registros, confirmaciones de la ampliación de rangos de distribución o movimientos altitudinales para 14 especies de aves de Ecuador: Cairina moschata, Netta erythrophthalma, Leucopternis semiplumbeus, Forpus coelestis, Crotophaga sulcirostris, Eriocnemis mosquera, Furnarius cinnamomeus, Pseudocolaptes boissonneautii, Phlegopsis nigromaculata, Querula purpurata, Cyclarhis gujanensis, Progne subis, Haplospiza rustica y Carduelis olivacea. Se discuten los diferentes registros y su importancia respecto al conocimiento de las aves de Ecuador. Palabras clave: Ampliación de rangos, aves de ecuador, nuevos registros. Abstract New records or confirmation of recently reported distributional range extensions or altitudinal movements are given or 14 species of birds from Ecuador: Cairina moschata, Netta erythrophthalma, Leucopternis semiplumbeus, Forpus coelestis, Crotophaga sulcirostris, Eriocnemis mosquera, Furnarius cinnamomeus, Pseudocolaptes boissonneautii, Phlegopsis nigromaculata, Querula purpurata, Cyclarhis gujanensis, Progne subis, Haplospiza rustica y Carduelis olivacea. The new records and their releva nce to the knowledge of Ecuadorian birds are discussed.
... The recent increase of waterbird records outside their reported ranges in the highlands (Henry 2005, Buitrón & Freile 2006, Cisneros-Heredia 2006, 2011, Buitrón-Jurado & de Vries 2008) could suggest a current colonization of the Andean wetlands of central and southern Ecuador. Upward range expansion is confirmed for the Neotropic Cormorant ( Guevara et al. 2011). ...
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I describe distributional and altitudinal range extensions for 72 bird species from Ecuador. These records are relevant at the Neotropical level (e.g. Phalacrocorax brasilianus, Phalcoboenus carunculatus, Falco columbarius, F. femoralis, F. peregrinus, Bartramia longicauda, Tringa semipalmata, Pyrocephalus rubinus, Tyrannus tyrannus, Thraupis palmarum, Chlorospingus flavogularis, Zonotrichia capensis, Catamenia inornata, Atlapetes pallidinucha, Passer domesticus), and at the Ecuadorian level (e.g. Podiceps occipitalis, Nycticorax nycticorax, Butorides striata, Falco sparverius, Gallinula chloropus, Calidris fuscicollis, C. himantopus, Leucophaeus atricilla, L. pipixcan, Athene cunicularia, Malacoptila fulvogularis, Synallaxis azarae, Asthenes wyatti, Thraupis bonariensis, Phrygilus alaudinus, Catamenia analis). Distributional extensions are discussed in terms of possible range expansions (some waterbirds in the highlands), and/or under-investigated areas of Ecuador (i.e., prov. of Chimborazo and Cotopaxi, Llanganates National Park). I conclude with four hypotheses that may explain observed altitudinal range extensions.
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The importance of the surrounding landscape to aquatic ecosystems has been well established. Most research linking aquatic ecosystems to landscapes has focused on the one-way effect of land on water. However, to understand fully the complex interactions between aquatic and terrestrial ecosystems, aquatic ecosystems must be seen not only as receptors of human modification of the landscape, but also as potential drivers of these modifications. We hypothesized that the presence of aquatic ecosystems influences the spatial distribution of human land use/cover of the nearby landscape (</=1 km) and that this influence has changed through time from the 1930s to the 1990s. To test this hypothesis, we compared the distribution of residential, agricultural, and forested land use/cover around aquatic ecosystems (lakes, wetlands, and streams) to the overall regional land use/cover proportion in an area in southeast Michigan, USA; we also compared the distribution of land use/cover around county roads/highway and towns (known determinants of many land use/cover patterns) to the regional proportion. We found that lakes, wetlands, and streams were strongly associated with the distribution of land use/cover, that each ecosystem type showed different patterns, and that the magnitude of the association was at least as strong as the association with human features. We also found that the area closest to aquatic ecosystems (<500 m) was more strongly associated with land use/cover distribution than areas further away. Finally, we found that the strength of the association between aquatic ecosystems and land use/cover increased from 1938 to 1995, although the overall patterns were similar through time. Our results show that a more complete understanding is needed of the role of aquatic ecosystems on the distribution of land use/cover.
The staffs of the Cotacachi-Cayapas Ecological Reserve, and El Cajas National Park were very helpful. I thank Katty Aldáz
  • Gunther Dr
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Dr. Gunther Reck. The staffs of the Cotacachi-Cayapas Ecological Reserve, and El Cajas National Park were very helpful. I thank Katty Aldáz, Myriam Burneo, Freddy Cáceres, Ana Gabela, Ruth Garcés, Gunther Reck, and Beatriz Trujillo, for providing information and field companionship at Colta, Yaguarcocha, San Pablo, and Ecuasal. Aves&Conservación (Corporación Ornitológica del Ecuador) and Universidad San Francisco de Quito provided institutional support.
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Ortiz Crespo, F. I. 1975. Lista de las aves más comunes de Quito y sus alrededores / Check list of the most common birds of Quito and its surroundings. Quito. Centro de Publicaciones, Pont. Universidad Católica del Ecuador. 8 pp.
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Ridgely, R. S. and P. J. Greenfield. 2001. The Birds of Ecuador, Vol. 1. Ithaca. Cornell University Press. 848 p.