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Journal articles on the topic 'Amazonian Andes'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

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1

Bush, M. B., M. R. Silman, C. McMichael, and S. Saatchi. "Fire, climate change and biodiversity in Amazonia: a Late-Holocene perspective." Philosophical Transactions of the Royal Society B: Biological Sciences 363, no. 1498 (2008): 1795–802. http://dx.doi.org/10.1098/rstb.2007.0014.

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Fire is an important and arguably unnatural component of many wet Amazonian and Andean forest systems. Soil charcoal has been used to infer widespread human use of landscapes prior to European Conquest. An analysis of Amazonian soil carbon records reveals that the records have distinct spatial and temporal patterns, suggesting that either fires were only set in moderately seasonal areas of Amazonia or that strongly seasonal and aseasonal areas are undersampled. Synthesizing data from 300 charcoal records, an age–frequency diagram reveals peaks of fire apparently coinciding with some periods of

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2

Nores, Manuel. "The Western Amazonian Boundary for Avifauna Determined by Species Distribution Patterns and Geographical and Ecological Features." International Journal of Ecology 2011 (2011): 1–7. http://dx.doi.org/10.1155/2011/958684.

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In northern South America, an extensive tropical lowland runs 5,000 km from the Atlantic coast to the foot of the Andes. The slope is gentle until about 500 m where the eastern Andes rise abruptly. The lowland supports Amazonia, which is the most extensive tract of tropical rainforest on the planet. Most of its boundaries are well defined, but the boundary between Amazonia and the forest of the eastern slopes of the Andes has not been clearly defined. To determine for avifauna whether Amazonia is restricted to the lowland of northern South America or whether it also extends up into the eastern

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3

Borda, Víctor, Isabela Alvim, Marla Mendes, et al. "The genetic structure and adaptation of Andean highlanders and Amazonians are influenced by the interplay between geography and culture." Proceedings of the National Academy of Sciences 117, no. 51 (2020): 32557–65. http://dx.doi.org/10.1073/pnas.2013773117.

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Western South America was one of the worldwide cradles of civilization. The well-known Inca Empire was the tip of the iceberg of an evolutionary process that started 11,000 to 14,000 years ago. Genetic data from 18 Peruvian populations reveal the following: 1) The between-population homogenization of the central southern Andes and its differentiation with respect to Amazonian populations of similar latitudes do not extend northward. Instead, longitudinal gene flow between the northern coast of Peru, Andes, and Amazonia accompanied cultural and socioeconomic interactions revealed by archeology.

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Stanfield-Mazzi, Maya. "Inka Bird Idiom: Amazonian Feathers in the Andes." Ethnohistory 72, no. 1 (2025): 121–22. https://doi.org/10.1215/00141801-11472796.

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5

Guayasamin, Juan M. "A new yellow species of glassfrog (Centrolenidae: Nymphargus) from the Amazonian slopes of the Ecuadorian Andes." Zootaxa 3651, no. 1 (2013): 193–200. https://doi.org/10.11646/zootaxa.3652.1.8.

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STURARO, MARCELO JOSÉ, and TERESA C. S. AVILA-PIRES. "Taxonomic revision of the geckos of the Gonatodes concinnatus complex (Squamata: Sphaerodactylidae), with description of two new species." Zootaxa 2869, no. 1 (2011): 1. http://dx.doi.org/10.11646/zootaxa.2869.1.1.

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The Gonatodes concinnatus complex, as here considered, consists of Gonatodes species characterized by a white suprahumeral spot with black margins; vermiculations or not on back; and transversely enlarged scales under the tail, showing the sequence 1’1’1”, and in some specimens 1’1’2” on the anterior portion. Two species are presently recognized in this Amazonian complex: G. concinnatus and G. tapajonicus. New material collected in eastern Amazonia (states of Pará and Amapá, Brazil) made it necessary to review these species. We analyzed several populations within this complex, from Colombia, E

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Bahamonde-Vinueza, Daniela, Hector Cadena-Ortiz, Carlos Cajas-Bermeo, and Elisa Bonaccorso. "Unusual records of Cochlearius cochlearius (Linnaeus, 1766) (Aves: Ardeidae) in the Andes of Ecuador." Check List 10, no. (3) (2014): 687–88. https://doi.org/10.15560/10.3.687.

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We report two high altitude sightings of Boat-billed Heron in the Andes of Ecuador. Based on identification and the localities were the sightings were reported, we suggest that both individuals belong to the Amazonian population of this species.

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Harvey, Michael B., Ana Almendáriz, Jorge Brito, and Diego Batallas. "A new species of Noblella (Anura: Craugastoridae) from the Amazonian Slopes of the Ecuadorian Andes with Comments on Noblella lochites (Lynch)." Zootaxa 3635, no. 1 (2013): 1–14. https://doi.org/10.11646/zootaxa.3635.1.1.

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Harvey, Michael B., Almendáriz, Ana, Brito, Jorge, Batallas, Diego (2013): A new species of Noblella (Anura: Craugastoridae) from the Amazonian Slopes of the Ecuadorian Andes with Comments on Noblella lochites (Lynch). Zootaxa 3635 (1): 1-14, DOI: 10.11646/zootaxa.3635.1.1

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Arteaga-Chávez, William Andrés, José María Loaiza, Daniel Valencia, et al. "DIVERSIDAD DE AVES DEL OESTE DE LA PROVINCIA DE CARCHI, ECUADOR." Revista Ecuatoriana de Ornitología 11, no. 1 (2025): 1–49. https://doi.org/10.18272/reo.v11i1.3315.

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Describing bird diversity patterns in complex biogeographic regions such as the Andes Mountains is crucial for understanding their biogeography and evolution. In Northern Ecuador lies the province of Carchi, geographically located in the inter-Andean valley, over the Pasto massif, where the western and eastern Ecuadorian branches diverge southward. Western Carchi, settled on the western Andean Cordillera, exhibits a wide altitudinal gradient and vegetation turnover from lowlands to high Andes. Although the area is part of the Chocó bioregion, a global biodiversity and endemism hotspot, knowled

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10

Guayasamin, Juan M., José Vieira, Richard E. Glor, and Carl R. Hutter. "A new glassfrog (Centrolenidae: Hyalinobatrachium) from the Topo River Basin, Amazonian slopes of the Andes of Ecuador." Amphibian & Reptile Conservation 13, no. 2 (2019): 133–44. https://doi.org/10.5281/zenodo.11405283.

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Guayasamin, Juan M., Vieira, José, Glor, Richard E., Hutter, Carl R. (2019): A new glassfrog (Centrolenidae: Hyalinobatrachium) from the Topo River Basin, Amazonian slopes of the Andes of Ecuador. Amphibian & Reptile Conservation (e194) 13 (2): 133-144, DOI: 10.5281/zenodo.11405283

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11

Lombardo, Umberto. "Alluvial plain dynamics in the southern Amazonian foreland basin." Earth System Dynamics 7, no. 2 (2016): 453–67. http://dx.doi.org/10.5194/esd-7-453-2016.

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Abstract. Alluvial plains are formed with sediments that rivers deposit on the adjacent flood-basin, mainly through crevasse splays and avulsions. These result from a combination of processes, some of which push the river towards the crevasse threshold, while others act as triggers. Based on the floodplain sedimentation patterns of large rivers in the southern Amazonian foreland basin, it has been suggested that alluvial plain sediment accumulation is primarily the result of river crevasse splays and sheet sands triggered by above-normal precipitation events due to La Niña. However, more than

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Lombardo, U. "Alluvial plain dynamics in the southern Amazonian foreland basin." Earth System Dynamics Discussions 6, no. 2 (2015): 2063–100. http://dx.doi.org/10.5194/esdd-6-2063-2015.

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Abstract. Alluvial plains are formed with sediments that rivers deposit on the adjacent flood-basin, mainly through crevasse splays and avulsions. These result from a combination of processes, some of which push the river towards the crevasse threshold, while others act as triggers. Based on the floodplain sedimentation patterns of large rivers in the southern Amazonian foreland basin, it has been suggested that alluvial plain sediment accumulation is primarily the result of river crevasse splays triggered by above normal precipitation events due to La Niña. However, more than 90 % of the Amaz

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Canal, Dubán, Nils Köster, Marcela Celis, Thomas B. Croat, Thomas Borsch, and Katy E. Jones. "Out of Amazonia and Back Again: Historical Biogeography of the Species-Rich Neotropical Genus Philodendron (Araceae)." Annals of the Missouri Botanical Garden 104, no. 1 (2019): 49–68. http://dx.doi.org/10.3417/2018266.

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The origin of Neotropical species diversity is strongly associated with the geological history of South America. Since the Miocene, a number of species radiations across different Neotropical lineages coincided with the rise of the Andes and the formation of the Isthmus of Panama. The species-rich genus Philodendron Schott (Araceae) is widely distributed across Neotropical rainforests, originating in the Late Oligocene and diversifying more intensely from the Miocene onward. It is likely that its diversification process and distribution patterns are associated with recent geological changes in

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14

IRMLER, ULRICH. "New species and records of the genus Lispinus with a key to the species from Peru (Coleoptera: Staphylinidae: Osoriinae)." Zootaxa 2263, no. 1 (2009): 42–58. http://dx.doi.org/10.11646/zootaxa.2263.1.4.

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Four new species of Lispinus from the premontane forest of the eastern slope of the Peruvian Andes are described and records of all other Lispinus species from Peru are given. The new species are: L. blandus, L. minimus, L. speciosus, and L. peruanus. A key to the known 21 Peruvian species is provided, habitat information is summarized and geographical distribution of species is discussed. The following six types of zoogeographic distribution can be differentiated for the Peruvian Lispinus species: endemic, eastern Andean, lowland Amazonian, Circum-Amazonian, northern Southand Central-American

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Reyes-Puig, Juan Pablo, Miguel Urgilés-Merchán, Daniela Franco-Mena, Juan M. Guayasamin, Diego Batallas, and Carolina Reyes-Puig. "Two new species of terrestrial frogs of the Pristimantis gladiator complex (Anura, Strabomantidae) from the Ecuadorian Andes, with insights on their biogeography and skull morphology." ZooKeys 1180 (September 26, 2023): 257–93. http://dx.doi.org/10.3897/zookeys.1180.107333.

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The explosive diversity of rainfrogs (Pristimantis spp) reaches its highest levels in the mountains of the Tropical Andes, with remarkable cryptic species mainly in unexplored areas of Ecuador. Based on phylogenetics, morphometric traits, skull osteology and bioacoustics, we describe two new species of Pristimantis, previously confused with Pristimantis gladiator, that belong to the subgenus Trachyphrynus traditionally known as the Pristimantis myersi species group. The two new taxa are closely related, but have allopatric distributions. We discuss the importance of the Quijos and Pastaza Rive

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Reyes-Puig, Juan Pablo, Miguel Urgilés-Merchán, Daniela Franco-Mena, Juan M. Guayasamin, Diego Batallas, and Carolina Reyes-Puig. "Two new species of terrestrial frogs of the Pristimantis gladiator complex (Anura, Strabomantidae) from the Ecuadorian Andes, with insights on their biogeography and skull morphology." ZooKeys 1180 (September 26, 2023): 257–93. https://doi.org/10.3897/zookeys.1180.107333.

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The explosive diversity of rainfrogs (Pristimantis spp) reaches its highest levels in the mountains of the Tropical Andes, with remarkable cryptic species mainly in unexplored areas of Ecuador. Based on phylogenetics, morphometric traits, skull osteology and bioacoustics, we describe two new species of Pristimantis, previously confused with Pristimantis gladiator, that belong to the subgenus Trachyphrynus traditionally known as the Pristimantis myersi species group. The two new taxa are closely related, but have allopatric distributions. We discuss the importance of the Quijos and Pastaza Rive

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17

Govin, A., C. M. Chiessi, M. Zabel, et al. "Terrigenous input off northern South America driven by changes in Amazonian climate and the North Brazil Current retroflection during the last 250 ka." Climate of the Past 10, no. 2 (2014): 843–62. http://dx.doi.org/10.5194/cp-10-843-2014.

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Abstract. We investigate changes in the delivery and oceanic transport of Amazon sediments related to terrestrial climate variations over the last 250 ka. We present high-resolution geochemical records from four marine sediment cores located between 5 and 12° N along the northern South American margin. The Amazon River is the sole source of terrigenous material for sites at 5 and 9° N, while the core at 12° N receives a mixture of Amazon and Orinoco detrital particles. Using an endmember unmixing model, we estimated the relative proportions of Amazon Andean material ("%-Andes", at 5 and 9° N)

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18

Robinson, S. K., J. W. Fitzpatrick, and J. Terborgh. "Distribution and habitat use of Neotropical migrant landbirds in the Amazon basin and Andes." Bird Conservation International 5, no. 2-3 (1995): 305–23. http://dx.doi.org/10.1017/s0959270900001064.

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SummaryWe documented the geographical distributions and habitat selection of Neotropical migrants in South America along a successional gradient in the lowlands of Amazonian Peru, and along elevational gradients in the Andes of south-eastern Peru and of eastern and western Ecuador. Most of the 30 species of northern migrants that regularly winter in South America appear to be concentrated in the western edge of the Amazon basin and on the lower slopes (2,000 m) of the Andes. Migrants in a lowland site were documented more often in early successional habitats than in primary forest, and no spec

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Castroviejo-Fisher, Santiago, José M. Padial, Juan C. Chaparro, Rodrigo Aguayo, and Ignacio De La Riva. "A new species of Hyalinobatrachium (Anura: Centrolenidae) from the Amazonian slopes of the central Andes, with comments on the diversity of the genus in the area." Zootaxa 2143 (December 31, 2009): 24–44. https://doi.org/10.5281/zenodo.188599.

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Castroviejo-Fisher, Santiago, Padial, José M., Chaparro, Juan C., Aguayo, Rodrigo, Riva, Ignacio De La (2009): A new species of Hyalinobatrachium (Anura: Centrolenidae) from the Amazonian slopes of the central Andes, with comments on the diversity of the genus in the area. Zootaxa 2143: 24-44, DOI: 10.5281/zenodo.188599

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Trujillo, William, Edwin Trujillo Trujillo, Fausto Andrés Ortiz-Morea, Diego A. Toro, and M. Alejandra Jaramillo. "New Piper species from the eastern slopes of the Andes in northern South America." PhytoKeys 206 (August 26, 2022): 25–48. http://dx.doi.org/10.3897/phytokeys.206.75971.

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We describe four new species of Piper from the Amazonian slopes of the northern Andes. Piper hoyoscardozii is distinguished from similar climbing species, P. dryadum and P. flagellicuspe, by its longer peduncles. The Amazonian species Piper indiwasii is distinguished from P. scutilimbum from Panama and northern Colombia by the narrowly spatulate leaf base extension. Piper nokaidoyitau is characterised by the presence of larger leaves and longer spikes than similar species, P. anonifolium and P. hostmannianum. Finally, P. velae is characterised by cordulate leaf bases in all nodes, petioles 0.8

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Trujillo, William, Edwin Trujillo Trujillo, Fausto Andrés Ortiz-Morea, Diego A. Toro, and M. Alejandra Jaramillo. "New Piper species from the eastern slopes of the Andes in northern South America." PhytoKeys 206 (August 26, 2022): 25–48. https://doi.org/10.3897/phytokeys.206.75971.

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We describe four new species of Piper from the Amazonian slopes of the northern Andes. Piper hoyoscardozii is distinguished from similar climbing species, P. dryadum and P. flagellicuspe, by its longer peduncles. The Amazonian species Piper indiwasii is distinguished from P. scutilimbum from Panama and northern Colombia by the narrowly spatulate leaf base extension. Piper nokaidoyitau is characterised by the presence of larger leaves and longer spikes than similar species, P. anonifolium and P. hostmannianum. Finally, P. velae is characterised by cordulate leaf bases in all nodes, petioles 0.8

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VENEGAS, PABLO J., LUIS A. GARCÍA-AYACHI, JUAN C. CHÁVEZ-ARRIBASPLATA, and ANTONIO GARCÍA-BRAVO. "Four new species of polychromatic spiny-tailed iguanian lizards, genus Stenocercus (Iguania: Tropiduridae), from Peru." Zootaxa 5115, no. 1 (2022): 1–28. http://dx.doi.org/10.11646/zootaxa.5115.1.1.

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The tropical Andes Mountains exhibit high levels of endemism and spatial turnover in the distribution of species. The lizard genus Stenocercus Duméril & Bibron, 1837, contains 76 species and most of them occur in the tropical Andes, reaching elevations up to 4,000 m. We describe four new species of Stenocercus based on the examination of newly collected material from the Amazonian slopes of the Peruvian Andes. Stenocercus asenlignus sp. nov. inhabits the premontane forest of northern and central Peru, departments of Amazonas, San Martín and Huánuco, at elevations between 1,500 and 2,036 m,

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Solano-Ugalde, Alejandro, and Galo J. Real-Jibaja. "New distributional bird records from the eastern Andean slopes of Ecuador." Check List 6, no. 2 (2010): 326. http://dx.doi.org/10.15560/6.2.326.

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Distribution of birds is dynamic. Understanding, documentation and appropriate use of new records are essential, especially when managing threatened species. Here we present novel data regarding new distributional records for 17 bird species along the Amazonian slopes of the eastern Ecuadorian Andes. The new records fill gaps on our knowledge in the distribution, both in latitude and altitude.

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Solano-Ugalde, Alejandro, and Galo Real-Jibaja. "New distributional bird records from the eastern Andean slopes of Ecuador." Check List 6, no. (2) (2010): 326–29. https://doi.org/10.15560/6.2.326.

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Distribution of birds is dynamic. Understanding, documentation and appropriate use of new records are essential, especially when managing threatened species. Here we present novel data regarding new distributional records for 17 bird species along the Amazonian slopes of the eastern Ecuadorian Andes. The new records fill gaps on our knowledge in the distribution, both in latitude and altitude.

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Barbieri, Chiara, Rodrigo Barquera, Leonardo Arias, et al. "The Current Genomic Landscape of Western South America: Andes, Amazonia, and Pacific Coast." Molecular Biology and Evolution 36, no. 12 (2019): 2698–713. http://dx.doi.org/10.1093/molbev/msz174.

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Abstract Studies of Native South American genetic diversity have helped to shed light on the peopling and differentiation of the continent, but available data are sparse for the major ecogeographic domains. These include the Pacific Coast, a potential early migration route; the Andes, home to the most expansive complex societies and to one of the most widely spoken indigenous language families of the continent (Quechua); and Amazonia, with its understudied population structure and rich cultural diversity. Here, we explore the genetic structure of 176 individuals from these three domains, genot

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Poulsen, Bent Otto. "Structure, dynamics, home range and activity pattern of mixed-species bird flocks in a montane alder-dominated secondary forest in Ecuador." Journal of Tropical Ecology 12, no. 3 (1996): 333–43. http://dx.doi.org/10.1017/s0266467400009524.

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ABSTRACTTwo mixed-species bird flocks were studied in a high-altitude humid secondary forest in the Andes of Ecuador. Birds were mist-netted and colour-ringed for individual identification. The flocks (A and B) were followed to record structure, dynamics, home range and activity pattern. All observations of the two flocks studied included members from all vertical levels, which is different from flocks of Amazonia. In two nucleus species, some individuals alternated between the flocks, a feature not previously reported. Various tanagers were loosely associated, joining and leaving flocks. Mini

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Morales-Martínez, Darwin M., M. Alejandra Camacho, and Santiago F. Burneo. "DISTRIBUTION AND MORPHOMETRIC VARIATION OF Micronycteris schmidtorum (SANBORN, 1935)(CHIROPTERA: PHYLLOSTOMIDAE) IN NORTH SOUTH AMERICA WITH THE FIRST RECORD FROM ECUADOR." Mastozoología Neotropical 25, no. 2 (2018): 391–96. https://doi.org/10.5281/zenodo.13441322.

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(Uploaded by Plazi for the Bat Literature Project) We present a revision of distribution of Micronycteris schmidtorum in Northern South America reporting fourteen new localities of the species for Colombia and Ecuador on both sides of the Andes. We present the first records of the species for Ecuador, the first record for the biogeographic region of El Chocó, and fill the gap in Amazonian localities between Peru, Venezuela and Colombia. Finally, we determine morphometric variation of the species: Colombian specimens are larger than other Central and South American specimens and specimens of Fr

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Morales-Martínez, Darwin M., M. Alejandra Camacho, and Santiago F. Burneo. "DISTRIBUTION AND MORPHOMETRIC VARIATION OF Micronycteris schmidtorum (SANBORN, 1935)(CHIROPTERA: PHYLLOSTOMIDAE) IN NORTH SOUTH AMERICA WITH THE FIRST RECORD FROM ECUADOR." Mastozoología Neotropical 25, no. 2 (2018): 391–96. https://doi.org/10.5281/zenodo.13441322.

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(Uploaded by Plazi for the Bat Literature Project) We present a revision of distribution of Micronycteris schmidtorum in Northern South America reporting fourteen new localities of the species for Colombia and Ecuador on both sides of the Andes. We present the first records of the species for Ecuador, the first record for the biogeographic region of El Chocó, and fill the gap in Amazonian localities between Peru, Venezuela and Colombia. Finally, we determine morphometric variation of the species: Colombian specimens are larger than other Central and South American specimens and specimens of Fr

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Morales-Martínez, Darwin M., M. Alejandra Camacho, and Santiago F. Burneo. "DISTRIBUTION AND MORPHOMETRIC VARIATION OF Micronycteris schmidtorum (SANBORN, 1935)(CHIROPTERA: PHYLLOSTOMIDAE) IN NORTH SOUTH AMERICA WITH THE FIRST RECORD FROM ECUADOR." Mastozoología Neotropical 25, no. 2 (2018): 391–96. https://doi.org/10.5281/zenodo.13441322.

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(Uploaded by Plazi for the Bat Literature Project) We present a revision of distribution of Micronycteris schmidtorum in Northern South America reporting fourteen new localities of the species for Colombia and Ecuador on both sides of the Andes. We present the first records of the species for Ecuador, the first record for the biogeographic region of El Chocó, and fill the gap in Amazonian localities between Peru, Venezuela and Colombia. Finally, we determine morphometric variation of the species: Colombian specimens are larger than other Central and South American specimens and specimens of Fr

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Morales-Martínez, Darwin M., M. Alejandra Camacho, and Santiago F. Burneo. "DISTRIBUTION AND MORPHOMETRIC VARIATION OF Micronycteris schmidtorum (SANBORN, 1935)(CHIROPTERA: PHYLLOSTOMIDAE) IN NORTH SOUTH AMERICA WITH THE FIRST RECORD FROM ECUADOR." Mastozoología Neotropical 25, no. 2 (2018): 391–96. https://doi.org/10.5281/zenodo.13441322.

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(Uploaded by Plazi for the Bat Literature Project) We present a revision of distribution of Micronycteris schmidtorum in Northern South America reporting fourteen new localities of the species for Colombia and Ecuador on both sides of the Andes. We present the first records of the species for Ecuador, the first record for the biogeographic region of El Chocó, and fill the gap in Amazonian localities between Peru, Venezuela and Colombia. Finally, we determine morphometric variation of the species: Colombian specimens are larger than other Central and South American specimens and specimens of Fr

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Morales-Martínez, Darwin M., M. Alejandra Camacho, and Santiago F. Burneo. "DISTRIBUTION AND MORPHOMETRIC VARIATION OF Micronycteris schmidtorum (SANBORN, 1935)(CHIROPTERA: PHYLLOSTOMIDAE) IN NORTH SOUTH AMERICA WITH THE FIRST RECORD FROM ECUADOR." Mastozoología Neotropical 25, no. 2 (2018): 391–96. https://doi.org/10.5281/zenodo.13441322.

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(Uploaded by Plazi for the Bat Literature Project) We present a revision of distribution of Micronycteris schmidtorum in Northern South America reporting fourteen new localities of the species for Colombia and Ecuador on both sides of the Andes. We present the first records of the species for Ecuador, the first record for the biogeographic region of El Chocó, and fill the gap in Amazonian localities between Peru, Venezuela and Colombia. Finally, we determine morphometric variation of the species: Colombian specimens are larger than other Central and South American specimens and specimens of Fr

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32

Bordera, Santiago, and llari Saaksjarvi. "Western Amazonian Ateleutina (Hymenoptera, Ichneumonidae, Cryptinae)." Journal of Hymenoptera Research 29 (October 15, 2012): 83–118. https://doi.org/10.3897/jhr.29.3661.

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Ateleutina is a small subtribe of Cryptinae (Ichneumonidae) composed of two genera: <i>Ateleute</i> Förster and <i>Tamaulipeca</i> Kasparyan. Neither of the genera includes species described from South America. In this article five new species of <i>Ateleute</i> (<i>A. ashaninka</i> <strong>sp. n.</strong> and <i>A.</i> <i>amarakaeri</i> from Peru, <i>A. shuar</i> <strong>sp. n.</strong> from Ecuador and Peru, and <i>A. huaorani</i> <strong>sp. n.</strong> and <i>A. kichua</i> <strong>sp. n.</strong> from Ecuador) and three new species of <i>Tamaulipeca</i> (<i>T. bora</i> <strong>sp. n.</stro

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Govin, A., C. M. Chiessi, M. Zabel, et al. "Terrigenous input off northern South America driven by changes in Amazonian climate and the North Brazil Current retroflection during the last 250 ka." Climate of the Past Discussions 9, no. 5 (2013): 5855–98. http://dx.doi.org/10.5194/cpd-9-5855-2013.

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Abstract. We investigate changes in the delivery and oceanic transport of Amazon sediments related to terrestrial climate variations over the last 250 ka. We present high-resolution geochemical records from four marine sediment cores located between 5 and 12° N along the northern South American margin. The Amazon River is the sole source of terrigenous material for sites at 5 and 9° N, while the core at 12° N receives a mixture of Amazon and Orinoco detrital particles. Using an endmember unmixing model, we estimated the relative proportions of Amazon Andean material ("%-Andes", at 5 and 9° N)

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Hoorn, Carina, Lydian M. Boschman, Tyler Kukla, Matteo Sciumbata, and Pedro Val. "The Miocene wetland of western Amazonia and its role in Neotropical biogeography." Botanical Journal of the Linnean Society 199, no. 1 (2022): 25–35. http://dx.doi.org/10.1093/botlinnean/boab098.

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Abstract In the Miocene (23–5 Ma), a large wetland known as the Pebas System characterized western Amazonia. During the Middle Miocene Climatic Optimum (c. 17–15 Ma), this system reached its maximum extent and was episodically connected to the Caribbean Sea, while receiving sediment input from the Andes in the west, and the craton (continental core) in the east. Towards the late Miocene (c. 10 Ma) the wetland transitioned into a fluvial-dominated system. In biogeographic models, the Pebas System is often considered in two contexts: one describing the system as a cradle of speciation for aquati

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Buendía, Corina, Axel Kleidon, Stefano Manzoni, Björn Reu, and Amilcare Porporato. "Evaluating the effect of nutrient redistribution by animals on the phosphorus cycle of lowland Amazonia." Biogeosciences 15, no. 1 (2018): 279–95. http://dx.doi.org/10.5194/bg-15-279-2018.

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Abstract. Phosphorus (P) availability decreases with soil age and potentially limits the productivity of ecosystems growing on old and weathered soils. Despite growing on ancient soils, ecosystems of lowland Amazonia are highly productive and are among the most biodiverse on Earth. P eroded and weathered in the Andes is transported by the rivers and deposited in floodplains of the lowland Amazon basin creating hotspots of P fertility. We hypothesize that animals feeding on vegetation and detritus in these hotspots may redistribute P to P-depleted areas, thus contributing to dissipate the P gra

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BRAVO, FREDDY, and DAVID SALAZAR-VALENZUELA. "A new species of Sycorax Curtis (Diptera, Psychodidae, Sycoracinae) collected on harlequin frogs (Anura: Bufonidae, Atelopus) in the Ecuadorian Andes." Zootaxa 2093, no. 1 (2009): 37–42. http://dx.doi.org/10.11646/zootaxa.2093.1.2.

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Sycorax wampukrum sp. nov. is described from the Amazonian slopes of the Cordillera Oriental of southern Ecuadorian Andes. This new species constitutes the first record of the genus from Ecuador. Males and females of this new species were found in contact with the dorsal surfaces of head, body and extremities of male individuals of harlequin frogs, thus establishing the second record of species of the genus Sycorax feeding on frog blood.

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Padial, Jose M., Juan C. Chaparro, Santiago Castroviejo-Fisher, et al. "A revision of species diversity in the Neotropical genus Oreobates (Anura: Strabomantidae), with the description of three new species from the Amazonian slopes of the Andes." American Museum Novitates 2012, no. 3752 (2012): 1–56. https://doi.org/10.1206/3752.2.

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Padial, Jose M., Chaparro, Juan C., Castroviejo-Fisher, Santiago, Guayasamin, Juan M., Lehr, Edgar, Delgado, Amanda J., Vaira, Marcos, Teixeira, Mauro, Aguayo, Rodrigo, Riva, Ignacio De La (2012): A revision of species diversity in the Neotropical genus Oreobates (Anura: Strabomantidae), with the description of three new species from the Amazonian slopes of the Andes. American Museum Novitates 2012 (3752): 1-56, DOI: 10.1206/3752.2, URL: http://www.bioone.org/doi/abs/10.1206/3752.2

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Griffith, Daniel M., Carlos Nivelo-Villavicencio, Fabián Rodas, Byron Puglla, and Rodrigo Cisneros. "New altitudinal records of Panthera onca (Carnivora: Felidae) in the Andean region of Ecuador." Mammalia 86, no. 2 (2021): 190–95. http://dx.doi.org/10.1515/mammalia-2021-0136.

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Abstract We report two records of jaguars (Panthera onca) registered with camera traps at 2300 and 2660 m a.s.l. in the Ecuadorian Andes, which represent the first verifiable records of the species above 2000 m in Ecuador. As the first records of jaguars from Río Negro-Sopladora National Park and Tapichalaca Reserve, these records raise important questions about the species’ ecology and conservation in Andean montane forests. From a regional perspective, these records may indicate connectivity between jaguar populations inhabiting both sides of the Andes. Sustained monitoring of wildlife popul

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Wagner, S., I. Fast, and F. Kaspar. "Climatic changes between 20th century and pre-industrial times over South America in regional model simulations." Climate of the Past Discussions 7, no. 5 (2011): 2981–3022. http://dx.doi.org/10.5194/cpd-7-2981-2011.

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Abstract. Two simulations with a regional climate model are analyzed for climatic changes between the late 20th century and a pre-industrial period over central and southern South America. The model simulations have been forced with large-scale boundary data from the global simulation performed with a coupled atmosphere-ocean general circulation model. The regional simulations have been carried out on a 0.44° × 0.44° grid (approx. 50 km × 50 km horizontal resolution). The differences in the external forcings are related to a changed greenhouse gas content of the atmosphere, being higher in the

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MENIN, MARCELO, ALBERTINA P. LIMA, and DOMINGOS J. RODRIGUES. "The Tadpole of Vitreorana oyampiensis (Anura, Centrolenidae) in Central Amazonia, Brazil." Zootaxa 2203, no. 1 (2009): 65–68. http://dx.doi.org/10.11646/zootaxa.2203.1.6.

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The family Centrolenidae contains about 148 species (Frost 2009), 11 genera and two subfamilies, distributed from southern Mexico to Panama, through the Andes from Venezuela to Bolivia, with species in the Amazon and Orinoco river basins, the Guiana Shield region, and the Atlantic forests of southeastern Brazil and northeastern Argentina (Guayasamin et al. 2009). The subfamily Centroleninae contains nine genera (Centrolene, Chimerella, Cochranella, Espadarana, Nymphargus, Rulyrana, Sachatamia, Teratohyla, and Vitreorana; Guayasamin et al. 2009). In spite of the high diversity in this subfamily

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Dorbath, C., L. Dorbath, A. Cisternas, et al. "On crustal seismicity of the Amazonian foothill of the central Peruvian Andes." Geophysical Research Letters 13, no. 10 (1986): 1023–26. http://dx.doi.org/10.1029/gl013i010p01023.

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Flores, William. "Inka Bird Idiom: Amazonian Feathers in the Andes by Claudia Brosseder (review)." Hispania 108, no. 1 (2025): 130–31. https://doi.org/10.1353/hpn.2025.a953562.

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Emlen, Nicholas Q. "Public discourse and community formation in a trilingual Matsigenka-Quechua-Spanish frontier community of Southern Peru." Language in Society 44, no. 5 (2015): 679–703. http://dx.doi.org/10.1017/s0047404515000597.

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AbstractUntil recently, the members of a community on the Andean-Amazonian agricultural frontier of Southern Peru have tended to limit their social ties to members of their own families. But the residents have begun to forge a ‘community’ through a semiotic distinction between private and public spaces, social practices, and domains of morality. Particular discursive phenomena in the asamblea ‘community meeting’ are deployed to create and maintain the community as a domain of action distinct from kin commitments, and participation in the asamblea offers a context in which to assume a novel pol

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Torres-Carvajal, Omar, Pablo J. Venegas, and Queiroz Kevin de. "Three new species of woodlizards (Hoplocercinae, Enyalioides) from northwestern South America." ZooKeys 494 (April 6, 2015): 107–32. https://doi.org/10.3897/zookeys.494.8903.

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The discovery of three new species of Enyalioides from the tropical Andes in Ecuador and northern Peru is reported. Enyalioides altotambo sp. n. occurs in northwestern Ecuador and differs from other species of Enyalioides in having dorsal scales that are both smooth and homogeneous in size, a brown iris, and in lacking enlarged, circular and keeled scales on the flanks. Enyalioides anisolepis sp. n. occurs on the Amazonian slopes of the Andes in southern Ecuador and northern Peru and can be distinguished from other species of Enyalioides by its scattered, projecting large scales on the dorsum,

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GREENE, SHANE. "Getting over the Andes: The Geo-Eco-Politics of Indigenous Movements in Peru's Twenty-First Century Inca Empire." Journal of Latin American Studies 38, no. 2 (2006): 327–54. http://dx.doi.org/10.1017/s0022216x06000733.

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This article examines how President Alejandro Toledo's self-professed Andean identity and efforts to establish a state-led indigenous rights framework conflicted with a growing eco-ethno alliance of Andean and Amazonian representatives in Peru. Existing scholarly accounts declare the indigenous movement to be unimportant or, indeed, entirely absent in Peru. Yet, they do so by emphasising the centrality of the historical dynamic between the Andean region, where until recently local peoples have desisted from making explicit indigenous claims, and the urbanised coastal region, where the elite's

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García-Loor, Jefferson. "Elevational range extension of Drab Water Tyrant, Ochthornis littoralis (Pelzeln, 1868) (Passeriformes, Tyrannidae)." Check List 18, no. (3) (2022): 451–53. https://doi.org/10.15560/18.3.451.

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The Drab Water Tyrant, <em>Ochthornis littoralis</em> (Pelzeln, 1868), is a small flycatcher occurring across lower Amazonia. Its usual habitat is the edges of rivers, and it is easily observed flying over sandbanks and among the trunks of fallen trees and branches. Here, I present a new locality in the Ecuadorian Andean foothills which represents a significant increase in this species’ elevational range from the Amazon lowlands. The new record is also from a previously unknown habitat for the species.

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PADIAL, JOSÉ M., ROY McDIARMID, and IGNA DE LA RIVA. "Distribution and morphological variation of Eleutherodactylus mercedesae Lynch & McDiarmid, 1987 (Amphibia, Anura, Leptodactylidae) with first record for Peru." Zootaxa 1278, no. 1 (2006): 49. http://dx.doi.org/10.11646/zootaxa.1278.1.2.

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We report new distributional information for Eleutherodactylus mercedesae in Bolivia, and provide the first record for Peru based on an adult female. This species, previously endemic to Bolivia, now ranges across about 1000 km in cloud forests on the Amazonian slopes of the Andes from southern Peru to central Bolivia. We provide the first morphological description of females based on two specimens, compare them with the male type and paratype, add some observations to the original description, and comment on variation in the species.

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Paez, Diego, Juan Guayasamin, and Mario Yanez. "A new species of Andean toad (Bufonidae, Osornophryne) discovered using molecular and morphological data, with a taxonomic key for the genus." ZooKeys 108 (June 17, 2011): 73–97. https://doi.org/10.3897/zookeys.108.1129.

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Combining a molecular phylogeny and morphological data, we discovered a new species of <i>Osornophryne</i> from the Amazonian slope of the Ecuadorian Andes. Morphologically, the new taxon is distinguished from all others species in <i>Osornophryne</i> bythe Toes IV and V longer than Toes I–III, a short and rounded snout with a small rostral papilla, and conical pustules on flanks. The new species previously was confused with <i>O. guacamayo</i>. A taxonomic key is provided for all known species of <i>Osornophryne</i>.

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Torres-Carvajal, Omar, Lourdes Echevarría, Pablo Venegas, Germán Chávez, and Jeffrey Camper. "Description and phylogeny of three new species of Synophis (Colubridae, Dipsadinae) from the tropical Andes in Ecuador and Peru." ZooKeys 546 (December 16, 2015): 153–79. https://doi.org/10.3897/zookeys.546.6533.

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The discovery of three new species of Synophis snakes from the eastern slopes of the tropical Andes in Ecuador and Peru is reported. All previous records of S. bicolor from eastern Ecuador correspond to S. bogerti sp. n., which occurs between 1000–1750 m along a large part of the Amazonian slopes of the Ecuadorian Andes. In contrast, Synophis zamora sp. n. is restricted to southeastern Ecuador, including Cordillera del Cóndor, between 1543–1843 m. Synophis insulomontanus sp. n. is from the eastern slopes of the Andes in central and northern Peru, between 1122–1798 m, and represents the first r

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Colinvaux, Paul A., Mark B. Bush, Miriam Steinitz-Kannan, and Michael C. Miller. "Glacial and Postglacial Pollen Records from the Ecuadorian Andes and Amazon." Quaternary Research 48, no. 1 (1997): 69–78. http://dx.doi.org/10.1006/qres.1997.1908.

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A long pollen record is derived from sediments of a lake dammed behind a low moraine of the last glaciation at 3°S latitude in the Ecuadorian Andes and is compared with a glacial age pollen record from the Amazon rainforest immediately below. Lake Surucucho (Llaviucu) lies at 3180 m on the Amazonian flank of the Andes and above the glacial age pollen record from San Juan Bosco at 970 m. The Surucucho pollen record is interpreted as showing treeless vegetation in glacial times, advance of treeline in late-glacial time, and Holocene development of modern Andean forests. Combining the Surucucho a

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