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Journal articles on the topic 'Northeastern Andes'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Garcia-Perez, Alfredo, and Jorge Villamizar. "Macrobrachium santanderensis, new species of freshwater prawn (Crustacea: Decapoda: Palaemonidae) from the northeastern Andes mountains of Colombia." Zootaxa 2061 (December 31, 2009): 61–68. https://doi.org/10.5281/zenodo.186838.

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Garcia-Perez, Alfredo, Villamizar, Jorge (2009): Macrobrachium santanderensis, new species of freshwater prawn (Crustacea: Decapoda: Palaemonidae) from the northeastern Andes mountains of Colombia. Zootaxa 2061: 61-68, DOI: 10.5281/zenodo.186838

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2

VIVALLO, FELIPE, and FERNANDO CÉSAR VIEIRA ZANELLA. "A new species of Centris (Paracentris) Cameron, 1903 from northeastern Brazil, with a key for the Centris species of the Caatinga region (Hymenoptera: Apidae)." Zootaxa 3298, no. 1 (2012): 1. http://dx.doi.org/10.11646/zootaxa.3298.1.1.

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Centris (Paracentris) Cameron is one of the subgenera with the greatest species richness of the bee tribe Centridini. Inthis paper, Centris nordestina, a new Brazilian species of the subgenus is described, and due to its close relationship witha clade of Andean species, a new biogeographical track is defined uniting northeastern Brazil with the Andes. For the first time a key for the species of the Caatinga region, the semiarid region of northeastern Brazil, is provided.

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3

Caro, Heidy, Susana Arango-Carvajal, Diego Suescún, and Eugenio Restrepo. "Unhiding Colombian orchid treasures: A new Lepanthes (Orchidaceae) from the northeastern Andes in Colombia." Phytotaxa 664, no. 3 (2024): 191–99. https://doi.org/10.11646/phytotaxa.664.3.4.

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Caro, Heidy, Arango-Carvajal, Susana, Suescún, Diego, Restrepo, Eugenio (2024): Unhiding Colombian orchid treasures: A new Lepanthes (Orchidaceae) from the northeastern Andes in Colombia. Phytotaxa 664 (3): 191-199, DOI: 10.11646/phytotaxa.664.3.4, URL: https://doi.org/10.11646/phytotaxa.664.3.4

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4

Sulca, Juan, Mathias Vuille, Yamina Silva, and Ken Takahashi. "Teleconnections between the Peruvian Central Andes and Northeast Brazil during Extreme Rainfall Events in Austral Summer." Journal of Hydrometeorology 17, no. 2 (2016): 499–515. http://dx.doi.org/10.1175/jhm-d-15-0034.1.

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ABSTRACT Extreme precipitation events in the Peruvian Andes have significant socioeconomic impacts, yet their atmospheric dynamics are poorly understood. Here austral summer (December–March) wet and dry spells and their continental- and large-scale teleconnections are analyzed using reanalysis, gridded, and in situ precipitation data. Dry and wet spells in the Peruvian Andes show a pervasive dipole pattern with precipitation anomalies of the opposite sign over northeastern Brazil. Composite anomalies of various atmospheric fields during extreme precipitation events indicate that this dipole is

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5

Venegas, Pablo J., Andy C. Barboza, Ignacio De La Riva, and José M. Padial. "A new species of Phrynopus from the northeastern Andes of Peru, its phylogenetic position, and notes on the relationships of Holoadeninae (Anura: Craugastoridae)." Zootaxa 4446, no. 4 (2018): 501–24. https://doi.org/10.11646/zootaxa.4446.4.5.

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Venegas, Pablo J., Barboza, Andy C., Riva, Ignacio De La, Padial, José M. (2018): A new species of Phrynopus from the northeastern Andes of Peru, its phylogenetic position, and notes on the relationships of Holoadeninae (Anura: Craugastoridae). Zootaxa 4446 (4): 501-524, DOI: 10.11646/zootaxa.4446.4.5

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Mamani, Luis, Víctor J. Vargas, Juan C. Chaparro, and Alessandro Catenazzi. "Two new species of gymnophthalmid lizards of the genus Petracola (Squamata: Cercosaurinae) from the Andes of northeastern Peru, and their phylogenetic relationships." Amphibian & Reptile Conservation 173, no. 1 (2023): 161–73. https://doi.org/10.5281/zenodo.11390672.

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Mamani, Luis, Vargas, Víctor J., Chaparro, Juan C., Catenazzi, Alessandro (2023): Two new species of gymnophthalmid lizards of the genus Petracola (Squamata: Cercosaurinae) from the Andes of northeastern Peru, and their phylogenetic relationships. Amphibian & Reptile Conservation (e328) 173 (1): 161-173, DOI: 10.5281/zenodo.11390672

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7

Socolar, Jacob B., and Alberto Peña. "Noteworthy bird records from the Tamá massif and adjacent areas, Norte de Santander, Colombia." Ornitología Colombiana, no. 21 (May 31, 2022): 17–25. http://dx.doi.org/10.59517/oc.e542.

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The Tamá massif straddles the Colombia-Venezuela border on the east slope of the East Andes. Rugged topography and recent political unrest have limited ornithological work in the area, particularly at lower elevations. We made multiple excursions to Tamá in 2017–2020, visiting elevations of 900–3400 m. We recorded several species that are unknown or poorly known on the east slope of the northeastern Andes in Colombia, including Heliangelus mavors, Coeligena bonapartei, Sternoclyta cyanopectus, Aulacorhynchus sulcatus, Thamnophilus unicolor, Formicarius rufipectus, Grallaricula ferrugineipectus

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Villalobos-Moreno, Alfonso, Néstor Cepeda-Olave, Julián A. Salazar-Escobar, and Juan Carlos Agudelo-Martínez. "Butterflies of the family Pieridae (Lepidoptera: Papilionoidea) of the Frio river basin, northeastern Andes of Santander, Colombia." Revista Chilena de Entomología 46, no. 3 (2020): 533–43. https://doi.org/10.35249/rche.46.3.20.20.

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Villalobos-Moreno, Alfonso, Cepeda-Olave, Néstor, Salazar-Escobar, Julián A., Agudelo-Martínez, Juan Carlos (2020): Butterflies of the family Pieridae (Lepidoptera: Papilionoidea) of the Frio river basin, northeastern Andes of Santander, Colombia. Revista Chilena de Entomología (Rev. Chil. Entomol.) 46 (3): 533-543, DOI: 10.35249/rche.46.3.20.20, URL: http://dx.doi.org/10.35249/rche.46.3.20.20

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9

Venegas, Pablo J., Luis A. García-Ayachi, Juan C. Chávez-Arribasplata, Germán Chávez, Iván Wong, and Antonio García-Bravo. "Four new species of Stenocercus Duméril & Bibron, 1837 (Squamata, Iguania) from the Department of Amazonas in northeastern Peru." Evolutionary Systematics 4 (November 18, 2020): 79–108. https://doi.org/10.3897/evolsyst.4.57578.

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The tropical Andes are known to be the richest and most diverse place on earth. This mountainous region covers almost one third of the Peruvian territory, and its herpetofauna remains poorly known. The lizard genus Stenocercus Duméril & Bibron, 1837 contains 69 species and most of them occur in the tropical Andes, although some exist as high as 4000 m a.s.l. The examination of newly collected material from the Andes of northern Peru in the Department of Amazonas reveals four new species of Stenocercus which we describe below. Of these four new species, three inhabit the ecoregion of Peruvi

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Venegas, Pablo J., Luis A. García-Ayachi, Juan C. Chávez-Arribasplata, Germán Chávez, Iván Wong, and Antonio García-Bravo. "Four new species of Stenocercus Duméril & Bibron, 1837 (Squamata, Iguania) from the Department of Amazonas in northeastern Peru." Evolutionary Systematics 4, no. 2 (2020): 79–108. http://dx.doi.org/10.3897/evolsyst.4.57578.

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The tropical Andes are known to be the richest and most diverse place on earth. This mountainous region covers almost one third of the Peruvian territory, and its herpetofauna remains poorly known. The lizard genus Stenocercus Duméril &amp; Bibron, 1837 contains 69 species and most of them occur in the tropical Andes, although some exist as high as 4000 m a.s.l. The examination of newly collected material from the Andes of northern Peru in the Department of Amazonas reveals four new species of Stenocercus which we describe below. Of these four new species, three inhabit the ecoregion of Pe

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Hervouët, Yves, Leonardo Gonzalez-Montilla, Damien Dhont, Guillaume Backe, and José Tomas Castrillo-Delgado. "Deformation of the northeastern Venezuelan Andes. Relationships with the Caribbean overthrusts." Bulletin de la Société Géologique de France 176, no. 1 (2005): 93–105. http://dx.doi.org/10.2113/176.1.93.

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Abstract Introduction The Mérida Andes (Venezuela) formed in the middle Miocene due to oblique convergence between the South American plate and the Maracaibo block [Audemard et al., 2002] (figs. 1A and 1B). The study area corresponds to the so-called “Barbacoas platform” [Renz, 1960], which constitutes the northeastern termination of the belt, NE of Valera (fig. 2). It is located in the northeastern part of Trujillo block [Hervouët et al., 2001], considered as an independent block separated from the main Maracaibo block along the Valera fault. According to Stéphan [1982], the N170°E-trendin

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12

Guengerich, Anna. "Settlement Organization and Architecture in Late Intermediate Period Chachapoyas, Northeastern Peru." Latin American Antiquity 26, no. 3 (2015): 362–81. http://dx.doi.org/10.7183/1045-6635.26.3.362.

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Chachapoya societies that lived on the forested eastern slopes of the Andes in northern Peru between A.D. 1000 and 1450 remain largely absent from broader narratives of the Andean Late Intermediate period (LIP). This paper argues that environmentally deterministic frameworks and lingering Inka biases have led scholars to problematically isolate Chachapoyans from their highland contemporaries. This work reviews three aspects of Chachapoya built environments—settlement patterning, internal organization, and architectural style—in order to provide a baseline for comparison with other regions. Cha

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13

QUINTERO, YESICA, SILVIA BARAJAS, DIEGO SUESCÚN, RONALD MONTAÑEZ, and LUIS ROBERTO SÁNCHEZ-MONTAÑO. "Espeletia llanadaensis (Asteraceae): A new species from the Northeastern Colombian Andes, Santander." Phytotaxa 702, no. 2 (2025): 197–204. https://doi.org/10.11646/phytotaxa.702.2.7.

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A new species of Espeletia has been discovered in the La Llanada Reserve, located in Paramo del Almorzadero in the northern Colombian Andes. Espeletia is a genus widely distributed along the north of the Andes mountain range; it is one of the most representative genera of paramo ecosystems and showcases a great morphological and ecological variability. The new species has an average density of 4360 individuals per hectare and a gregarious distribution pattern, resulting from a limited ability to disperse seeds over long distances, which is also a specialized adaptation to tolerate low temperat

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Mendoza-Cifuentes, Humberto, William Ariza, David E. Granados, and Rosana Romero. "A new species of Microlicia (Melastomataceae): first record of the genus for Colombia." PhytoKeys 122 (May 28, 2019): 87–96. https://doi.org/10.3897/phytokeys.122.34171.

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Microlicia (Melastomataceae) is a Neotropical genus nearly restricted to southeastern Brazil, and the Guiana Shield in Venezuela, with a few species in some places in the Andes of Bolivia and Peru. A new species of Microlicia endemic to the mountains of eastern Andes of Colombia is described and illustrated. Its affinities with other morphologically similar species from Venezuela are also documented. This novelty is the first record of the genus for Colombia and the northern Andes. It is argued that this disjunct distribution of the genus is attributable to the phenomenon of long-distance seed

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15

Naveda-Rodríguez, Adrián, and Francisco Bisbal. "Avifauna of Dinira National Park, Venezuela." Check List 4, no. (3) (2008): 373–81. https://doi.org/10.15560/4.3.373.

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This is a preliminary inventory of the avifauna of Dinira National Park (DNP), northeastern of Venezuelan Andes, a region that is poorly known ornithologically. In the field work (30 days), 127 bird species (10 orders, 41 families) were recorded, ca. 9 % of the total birds known to Venezuela. From them, just three corresponding to endemic species (2.4 %) whereas 14 (11.0 %) were migrants. Also, new important range extensions were documented, especially for some birds previously reported in Táchira and Mérida states (<em>Merganetta armata </em>and <em>Dendrocincla tyrannina</em>). From recorded

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16

Palacio, Rubén Darío. "A reappraisal of the distribution of the Yellow-headed Manakin (Chloropipo flavicapilla) in Colombia and Ecuador." Ornitología Colombiana, no. 23 (June 29, 2023): 31–37. http://dx.doi.org/10.59517/oc.e554.

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The Yellow-headed Manakin (Chloropipo flavicapilla) is a rare and threatened species that is thought to occur between the Andes of Colombia and northeastern Ecuador. However, only three records support the presence of C. flavicapilla in Ecuador: a 19th-century specimen from Hacienda Mapoto, Tungurahua province, and two undocumented field observations from the early 1990s — one from Cordillera de Guacamayos and one from Volcán Sumaco. I investigated these records and found that the Mapoto specimen is a Green Manakin (Cryptopipo holochlora) deposited in the Museum and Institute of Zoology, Polis

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17

Romatschke, Ulrike, and Robert A. Houze. "Extreme Summer Convection in South America." Journal of Climate 23, no. 14 (2010): 3761–91. http://dx.doi.org/10.1175/2010jcli3465.1.

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Abstract Tropical Rainfall Measuring Mission (TRMM) Precipitation Radar (PR) and National Centers for Environmental Prediction–National Center for Atmospheric Research (NCEP–NCAR) reanalysis data are used to indicate mechanisms responsible for extreme summer convection over South America. The three-dimensional reflectivity field is analyzed to define three types of extreme echo, deep convective cores, wide convective cores, and broad stratiform regions. The location and timing of these echoes are sensitive to midlatitude synoptic disturbances crossing the Andes. At the leading edges of these d

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Teixeira, A. A. M., S. V. Brito, D. A. Teles, et al. "Helminths of the Lizard Salvator merianae (Squamata, Teiidae) in the Caatinga, Northeastern Brazil." Brazilian Journal of Biology 77, no. 2 (2016): 312–17. http://dx.doi.org/10.1590/1519-6984.13515.

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Abstract The lizard Salvator merianae is a widely distributed species in South America, occurring from southern Amazonia to the eastern Andes and northern Patagonia. Studies on the parasitic fauna of this lizard have revealed that it is a host for helminths in various Brazilian biomes. The present work provides new parasitological data on the gastrointestinal nematodes associated with the lizard S. merianae. Sixteen specimens were analyzed from nine different locations in a semi-arid region in northeastern Brazil. Five species of nematodes were identified. Oswaldofilaria petersi was first reco

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CARO, HEIDY, SUSANA ARANGO-CARVAJAL, DIEGO SUESCÚN, and EUGENIO RESTREPO. "Unhiding Colombian orchid treasures: A new Lepanthes (Orchidaceae) from the northeastern Andes in Colombia." Phytotaxa 664, no. 3 (2024): 191–99. http://dx.doi.org/10.11646/phytotaxa.664.3.4.

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A new species of Lepanthes from the eastern Colombian Andes from the department of Santander has been discovered. Here it is described, illustrated, and compared with species with morphological affinities, particularly with the sympatric Lepanthes rabei, from which it can be separated by a combination of traits: the larger plant length, reaching up to 8.28 cm in height, the elliptical-lanceolate leaves, concolor, the sepals not denticulate, the lip blades ovate-oblong, obtuse, slightly falcate at the apex, the long cilia at the lip tip and the appendix minute, reflexed downwards, pubescent. In

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20

Liu, Xiaojuan, and David S. Battisti. "The Influence of Orbital Forcing of Tropical Insolation on the Climate and Isotopic Composition of Precipitation in South America." Journal of Climate 28, no. 12 (2015): 4841–62. http://dx.doi.org/10.1175/jcli-d-14-00639.1.

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Abstract The δ18O of calcite (δ18Oc) in speleothems from South America is fairly well correlated with austral summer [December–February (DJF)] insolation, indicating the role of orbitally paced changes in insolation in changing the climate of South America. Using an isotope-enabled atmospheric general circulation model (ECHAM4.6) coupled to a slab ocean model, the authors study how orbitally paced variations in insolation change climate and the isotopic composition of precipitation (δ18Op) of South America. Compared with times of high summertime insolation, times of low insolation feature (i)

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21

COLOMA, LUIS A., STEFAN LÖTTERS, WILLIAM E. DUELLMAN, and ALFONSO MIRANDA-LEIVA. "A taxonomic revision of Atelopus pachydermus, and description of two new (extinct?) species of Atelopus from Ecuador (Anura: Bufonidae)." Zootaxa 1557, no. 1 (2007): 1–32. http://dx.doi.org/10.11646/zootaxa.1557.1.1.

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Atelopus pachydermus is redescribed on the basis of the retraced holotype and recently collected specimens. Comparisons with the holotype confirmed that this species occurs neither in Pacific Colombia, nor in the northeastern Cordillera of Ecuador, as proposed by previous authors. It occurs in the northwestern Andes of Peru and adjacent Ecuador. Populations from the Cordillera Oriental in northern Ecuador (some of them previously allocated to A. pachydermus) are described as a new species, which is distinguished from other Atelopus by size, coloration, and by having white digital pads that con

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22

Fajardo, Sebastian, and Pedro Argüello. "Sociopolitical evolution, population clustering, and technology among early sedentary communities in northeastern Andes, Colombia." Journal of Anthropological Archaeology 76 (December 2024): 101628. http://dx.doi.org/10.1016/j.jaa.2024.101628.

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23

RIVERA-CORREA, MAURICIO, SANTIAGO RON, IVAN NUNES, KATYUSCIA ARAUJO-VIEIRA, PAULO D. P. PINHEIRO, and TARAN GRANT. "Forty years later: a new Andean stream treefrog of the genus Hyloscirtus (Anura: Hylidae) from Ecuador, with comments on arm hypertrophy in the H. larinopygion group." Zootaxa 5474, no. 2 (2024): 101–26. http://dx.doi.org/10.11646/zootaxa.5474.2.1.

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We present the description of a novel treefrog species inhabiting the Andean streams in southeastern Ecuador that has been erroneously identified as Hyloscirtus lindae for four decades. The new species is closely related to H. tapichalaca and is part of the southern clade of the H. larinopygion group, which comprises five species confined to the southeastern Andes of Ecuador to the northeastern Andes of Peru. It is diagnosed from its close relatives by a unique combination of characteristics, including hypertrophied forelimbs in males, a pronounced, curved, and protruding spine-shaped prepolle

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SCHWARTSBURD, PEDRO B., AGUSTINA YAÑEZ, and JEFFERSON PRADO. "Formal recognition of six subordinate taxa within the South American bracken fern, Pteridium esculentum (P. esculentum subsp. arachnoideum s.l.—Dennstaedtiaceae), based on morphology and geography." Phytotaxa 333, no. 1 (2018): 22. http://dx.doi.org/10.11646/phytotaxa.333.1.2.

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Based on the morphological study of ca. 470 specimens and geographical studies, we here propose the recognition of six morphotypes within the South American Pteridium esculentum (= P. arachnoideum s.l., or P. aquilinum var. arachnoideum sensu Tryon, or P. esculentum subsp. arachnoideum sensu Thomson). Three of them are widely distributed and well-defined, and we regard them as subspecies of P. esculentum: P. esculentum subsp. arachnoideum s. str., P. esculentum subsp. campestre, comb. et stat. nov., and P. esculentum subsp. gryphus. The other three are more rare. One of these is a pedomorphic

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25

King, Malcolm J., Matthew C. Wheeler, and Todd P. Lane. "Mechanisms Linking Global 5-Day Waves to Tropical Convection." Journal of the Atmospheric Sciences 74, no. 11 (2017): 3679–702. http://dx.doi.org/10.1175/jas-d-17-0101.1.

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Abstract Reanalysis data and satellite-derived rainfall measurements are examined to determine possible mechanisms linking the “5 day” Rossby–Haurwitz wave to localized variations of tropical convection. The mechanisms in all regions rely on the modulation of zonal winds near the equator by the wave, but the nature of these mechanisms depends strongly on local topography and local climate. In the upper Amazon basin, the wave modulates the strength of prevailing easterlies and thus the upslope flow and associated convection on the eastern edge of the Andes. Similar modulation of upslope flow is

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Naveda-Rodríguez, Adrián, and Francisco Bisbal. "Avifauna of Dinira National Park, Venezuela." Check List 4, no. 3 (2008): 373. http://dx.doi.org/10.15560/4.3.373.

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This is a preliminary inventory of the avifauna of Dinira National Park (DNP), northeastern of Venezuelan Andes, a region that is poorly known ornithologically. In the field work (30 days), 127 bird species (10 orders, 41 families) were recorded, ca. 9 % of the total birds known to Venezuela. From them, just three corresponding to endemic species (2.4 %) whereas 14 (11.0 %) were migrants. Also, new important range extensions were documented, especially for some birds previously reported in Táchira and Mérida states (Merganetta armata and Dendrocincla tyrannina). From recorded species 33 are th

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Di, Giovanni Filippo, Diego Pádua, Rodrigo Araujo, Alvaro Santos, and Ilari Sääksjärvi. "A striking new species of Dolichomitus Smith, 1877 (Hymenoptera: Ichneumonidae; Pimplinae) from South America." Biodiversity Data Journal 9 (May 28, 2021): e67438. https://doi.org/10.3897/BDJ.9.e67438.

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<i>Dolichomitus</i> Smith, 1877 is a genus of Darwin wasps characterized by its large body and long ovipositor, that includes more than 75 species worldwide, 20 of which occur in the Neotropical Region. Due to recent efforts, the number of species of this genus continues to increase in South America.A new iridescent species of Pimplinae, <em>Dolichomitus meii</em> sp. nov., is described and illustrated. It was discovered from the biological station of Yanayacu, located in the northeastern slopes of the tropical Andes. It may be separated from all other species of <em>Dolichomitus</em> Smith by

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González-Rojí, Santos J., Martina Messmer, Christoph C. Raible, and Thomas F. Stocker. "Sensitivity of precipitation in the highlands and lowlands of Peru to physics parameterization options in WRFV3.8.1." Geoscientific Model Development 15, no. 7 (2022): 2859–79. http://dx.doi.org/10.5194/gmd-15-2859-2022.

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Abstract. The performance of the Weather Research and Forecasting (WRF) model version 3.8.1 at convection-permitting scale is evaluated by means of several sensitivity simulations over southern Peru down to a grid resolution of 1 km, whereby the main focus is on the domain with 5 km horizontal resolution. Different configurations of microphysics, cumulus, longwave radiation, and planetary boundary layer schemes are tested. For the year 2008, the simulated precipitation amounts and patterns are compared to gridded observational data sets and weather station data gathered from Peru, Bolivia, and

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Villalobos-Moreno, Alfonso, Néstor Cepeda-Olave, Julián A. Salazar-Escobar, and Juan Carlos Agudelo-Martínez. "Butterflies of the family Pieridae (Lepidoptera: Papilionoidea) of the Frio river basin, northeastern Andes of Santander, Colombia." REVISTA CHILENA DE ENTOMOLOGÍA 46, no. 3 (2020): 533–43. http://dx.doi.org/10.35249/rche.46.3.20.20.

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Venegas, Pablo J., Luis A. García-Ayachi, Andy C. Barboza, and Alessandro Catenazzi. "Description of two new species of Pristimantis (Anura: Strabomantidae) from northern Peru, previously confused with P. phoxocephalus Lynch 1979." Holotipus 5, no. 1 (2024): 1–20. https://doi.org/10.5281/zenodo.11103883.

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<strong>Abstract</strong>: Based on morphological and previously published molecular evidence, herein we describe two new species of <em>Pristimantis</em> from the Andes of northern Peru; <em>Pristimantis</em><strong> sp. nov.</strong> 1 from Cañaris in the northern region of the Cordillera Occidental of the Andes, at an elevation of 3200 m.a.s.l., Lambayeque Department, northwestern Peru, and <em>Pristimantis</em> <strong>sp. nov.</strong> 2 from the Huarmicocha to Cochabamba trail in the northern region of the Cordillera Central, at an elevation of 3376 m.a.s.l., A

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Shanee, N. "Trends in local wildlife hunting, trade and control in the Tropical Andes Biodiversity Hotspot, northeastern Peru." Endangered Species Research 19, no. 2 (2012): 177–86. http://dx.doi.org/10.3354/esr00469.

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Cardona, A., V. A. Valencia, A. Lotero, Y. Villafañez, and G. Bayona. "Provenance of middle to late Palaeozoic sediments in the northeastern Colombian Andes: implications for Pangea reconstruction." International Geology Review 58, no. 15 (2016): 1914–39. http://dx.doi.org/10.1080/00206814.2016.1190948.

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GARCIA-PEREZ, ALFREDO, and JORGE VILLAMIZAR. "Macrobrachium santanderensis, new species of freshwater prawn (Crustacea: Decapoda: Palaemonidae) from the northeastern Andes mountains of Colombia." Zootaxa 2061, no. 1 (2009): 61–68. http://dx.doi.org/10.11646/zootaxa.2061.1.4.

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There is only one species of freshwater prawn documented for the Catatumbo region, which is part of the northeastern Andes mountains of Colombia. Morphology comparison with other Colombian Macrobrachium species which inhabit the nearby Orinoco river basin such as M. brasiliense, M. cortezi, M. heterochirus, and M. reyesi, and the only species reported for the Catatumbo region (M. praecox) reveals distinct characters of a new freshwater prawn species. The differences between the new species described herein and the previously reported Macrobrachium species are in the ornamentation of the rostru

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Venegas, Pablo J., Luis A. García-Ayachi, and Alessandro Catenazzi. "Two New Species of Pristimantis (Anura: Strabomantidae) from Amazonas Department in Northeastern Peru." Taxonomy 2, no. 1 (2021): 20–40. http://dx.doi.org/10.3390/taxonomy2010002.

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We describe two new species of terrestrial-breeding frogs in the genus Pristimantis from the Andes of northeastern Peru, Amazonas Department. Both species share several characters with other congeners from northern Peru, such as the presence of prominent conical tubercles on their eyelids and heel, prominent conical tubercles along the outer edge of the tarsus, and discs on fingers and toes widely expanded. However, both species can be diagnosed from morphologically similar Pristimantis in the region. Pristimantis kiruhampatu has axillae, groins, and hidden surfaces of hindlimbs that are cherr

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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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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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Hervouet, Yves, Jose Tomass Castrillo-Delgado, and Oscar Odreman. "Interaction entre un chevauchement imbrique et une zone transcurrente; le flanc nord-ouest de Andes venezueliennes." Bulletin de la Société Géologique de France 172, no. 2 (2001): 159–75. http://dx.doi.org/10.2113/172.2.159.

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Abstract Geological framework; Geological setting: The Venezuela Andes or Merida Andes (fig. 1) extend from the Colombian border in the SW to Barquisimeto in the NE, and constitute a basement uplift exceeding 5,000 m near Merida (Pico Bolivar). This young chain is bordered to the W by the Maracaibo foredeep basin, and to the E by the Barinas-Apure foreland basin. The Bocono fault divides the Andean Belt in two parts along a NE-SW direction. This shows that the uplift of the Andes is contemporaneous with an oblique translation. In the study area, located on the northwestern flank near Maracaibo

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Arango-Diago, Santiago, Dennis Castillo-Figueroa, Juan Albarracín-Caro, and Jairo Pérez-Torres. "Dietary variation and reproductive status of Mormoops megalophylla (Chiroptera: Mormoopidae) in a cave of Northeastern Andes from Colombia." Mastozoología Neotropical 27, no. 2 (2020): 258–65. http://dx.doi.org/10.31687/saremmn.20.27.2.0.13.

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Arango-Diago, Santiago, Dennis Castillo-Figueroa, Juan Albarracín-Caro, and Jairo Pérez-Torres. "Dietary variation and reproductive status of Mormoops megalophylla (Chiroptera: Mormoopidae) in a cave of Northeastern Andes from Colombia." Mastozoología Neotropical 27, no. 2 (2020): 258–65. https://doi.org/10.5281/zenodo.14821209.

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(Uploaded by Plazi for the Bat Literature Project) Dietary studies of insectivorous bats are critical for a comprehensive analysis of their ecological role in pest control. Several factors including seasonality, reproductive status and sex may in uence dietary specialization. However, data on insectivorous bat diet are scarce, especially in Mormoopidae family. Here, we analyzed the dietary variation of Mormoops megalophylla (Peters, 1864) between sexes, reproductive states and climatic seasons in Macaregua cave, located in Northeastern Andes of Colombia. We collected fecal samples and vaginal

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Poveda, Germán, Oscar J. Mesa, Luis F. Salazar, et al. "The Diurnal Cycle of Precipitation in the Tropical Andes of Colombia." Monthly Weather Review 133, no. 1 (2005): 228–40. http://dx.doi.org/10.1175/mwr-2853.1.

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Abstract Using hourly records from 51 rain gauges, spanning between 22 and 28 yr, the authors study the diurnal cycle of precipitation over the tropical Andes of Colombia. Analyses are developed for the seasonal march of the diurnal cycle and its interannual variability during the two phases of El Niño–Southern Oscillation (ENSO). Also, the diurnal cycle is analyzed at intra-annual time scales, associated with the westerly and easterly phases of the Madden–Julian oscillation, as well as higher-frequency variability (&lt;10 days), mainly associated with tropical easterly wave activity durin

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Araujo, Francisco, and Nuris Orihuela. "Sediment-thickness and upper-lower crustal boundary of the Maracaibo block, Venezuela, from gravity study." Annals of Geophysics 66, no. 5 (2024): DM532. http://dx.doi.org/10.4401/ag-8981.

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The Maracaibo Block is a triangularly shaped fraction of independent continental lithosphere located in north‐western Venezuela, controlled by a complex system of strike‐slip and thrusts faults; the Oca‐Ancon fault (north), the Santa Marta‐Bucaramanga fault (southwest) and Boconó fault (east). In the present research we study two interfaces associated with the upper crust, the basement‐sediment, and the upper‐lower crustal interface, as well the interaction with the Caribbean plate. These interfaces were defined using gravimetric inversion methods in conjunction with well information, refract

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Romatschke, Ulrike, and Robert A. Houze. "Characteristics of Precipitating Convective Systems Accounting for the Summer Rainfall of Tropical and Subtropical South America." Journal of Hydrometeorology 14, no. 1 (2013): 25–46. http://dx.doi.org/10.1175/jhm-d-12-060.1.

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Abstract Ten years of Tropical Rainfall Measuring Mission precipitation radar data are used to study the physical properties of the precipitating cloud systems that account for the summer rainfall of tropical and subtropical South America. Radar echoes in the continental subtropics tend to be of an intensely convective nature, especially at the eastern foothills of the Andes where diurnally forced deep convective cells of small horizontal scale form when moist low-level flow is driven toward the foothills in connection with a midlatitude disturbance. As the disturbance moves east over the La P

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Johnson, Ned K., and Robert E. Jones. "A New Species of Tody-Tyrant (Tyrannidae: Poecilotriccus) From Northern Peru." Auk 118, no. 2 (2001): 334–41. http://dx.doi.org/10.1093/auk/118.2.334.

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Abstract We describe a new species of tody-tyrant of the genus Poecilotriccus, isolated in midelevation forests of the Cordillera de Colán and nearby mountains to the east in the northeastern Andes of Peru. The new species is allopatric from, and forms a probable superspecies with, the Rufous-crowned Tody-Tyrant (P. ruficeps), the nearest known populations of which inhabit the Cerro Chinguela of northern Peru. The geographic ranges of those sister taxa are divided by the North Peruvian Low, occupied by the Río Marañón, the major break in east-slope Andean forest between Venezuela and Bolivia.

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Guevara, Evelyn K., Jukka U. Palo, Jonathan L. King, et al. "Autosomal STR and SNP characterization of populations from the Northeastern Peruvian Andes with the ForenSeq™ DNA Signature Prep Kit." Forensic Science International: Genetics 52 (May 2021): 102487. http://dx.doi.org/10.1016/j.fsigen.2021.102487.

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Tellkamp, Markus P. "Habitat change and trade explain the bird assemblage from the La Chimba archaeological site in the northeastern Andes of Ecuador." Ibis 156, no. 4 (2014): 812–25. http://dx.doi.org/10.1111/ibi.12179.

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García, Juanita, Esteban Suárez, and Galo Zapata-Ríos. "An assessment of the populations of Sylvilagus brasiliensis andinus in Páramos with different vegetation structures in the northeastern Andes of Ecuador." Neotropical Biodiversity 2, no. 1 (2016): 72–80. http://dx.doi.org/10.1080/23766808.2016.1179846.

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Greeney, Harold Francis. "THE NEST, EGG, AND NESTLING OF MANY-STRIPED CANASTERO ASTHENES F. FLAMMULATA (FURNARIIDAE)." Revista Ecuatoriana de Ornitología, no. 6 (March 22, 2020): 67–75. http://dx.doi.org/10.18272/reo.vi6.1307.

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The genus Asthenes includes around 27–30 species of slender, long-tailed furnariids, predominantly montane in distribution. During fieldwork in the high Andes of northeastern Ecuador, I discovered four nests of Many-striped Canastero A. flammulata flammulata. All nests were mossy, nearly spherical balls, with a centrally placed side entrance, and with the entire inner chamber lined with a thick layer of seed down and fur. All were built into natural cavities formed by densely tangled vegetation, on or very near the ground. Two clutches consisted of two eggs each. Eggs were immaculate white, ov

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Urton, Gary. "A Calendrical and Demographic Tomb Text from Northern Peru." Latin American Antiquity 12, no. 2 (2001): 127–47. http://dx.doi.org/10.2307/972052.

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The focus of this study is on a khipu—a knotted—string recording device-from the Chachapoya region of the northeastern Andes of Peru. The khipu was one of 32 khipus discovered, along with some 220 mummy bundles, in 1996 in a half-dozen chullpas (burial houses) built into a rock-overhang overlooking a lake, called Laguna de los Cóndores, near the town of Leymebamba (Department of Amazonas). The cultural materials found with the mummies and khipus date from the pre-Inkaic Chachapoya culture (ca. A. D. 800-1450), through the Inka occupation of the region and on into the early colonial era. It is

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JONES, GUINEVERE Z., and SCOTT R. SHAW. "Ten new species of Meteorus (Hymenoptera: Braconidae) from Ecuador reared at the Yanayacu Biological Center for Creative Studies." Zootaxa 3547, no. 1 (2012): 1. http://dx.doi.org/10.11646/zootaxa.3547.1.1.

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Ten new species of the braconid genus Meteorus are described, along with biological information. Specimens were reared from lepidopteran larvae collected in the northeastern Andes of Ecuador, a hotspot of global diversity. The new species described and illustrated are: M. bustamanteorum, M. caritatis, M. horologium, M. imaginatus, M. luteus, M. margarita, M. oreo, M. porcatus, M. quasifabatus, and M. zitaniae. The biology of these species has also been observed: reared as single wasp emergences are M. caritatis, M. imaginatus, M. luteus, and M. oreo. The majority of the descriptions are of gre

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Silva, Viviane B. S., Vernon E. Kousky, and R. Wayne Higgins. "Daily Precipitation Statistics for South America: An Intercomparison between NCEP Reanalyses and Observations." Journal of Hydrometeorology 12, no. 1 (2011): 101–17. http://dx.doi.org/10.1175/2010jhm1303.1.

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Abstract In this study, the authors document the extent to which the precipitation statistics of the new CFS reanalysis (CFSR) represent an improvement over the earlier reanalyses: the NCEP–NCAR reanalysis (R1) and the NCEP–DOE Second Atmospheric Model Intercomparison Project (AMIP-II) reanalysis (R2). An intercomparison between the CFSR, R1, R2, and observations over South America was made for the period 1979–2006. The CFSR shows notable improvements in the large-scale precipitation patterns compared with the previous reanalyses (R1 and R2). In spite of these improvements, the CFSR has substa

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