Results 31 to 40 of about 949 (173)

Pleistocene mafic volcanoes in the Puna–Cordillera Oriental boundary, NW-Argentina

open access: yesJournal of Volcanology and Geothermal Research, 2006
Abstract Los Gemelos and El Saladillo are both monogenetic, strombolian, basaltic–shoshonitic volcanoes that constitute the easternmost recognized examples of mafic Plio-Quaternary volcanism in the southern Central Andes. Two regional faults delimit the borders of the Calchaqui valley, as thrusts with opposite vergence: the eastern Calchaqui fault ...
Guzman, Silvina Raquel   +2 more
openaire   +2 more sources

Tres nuevas especies del género Atelopus a.m.c. Dumeril & bibron 1841 (Amphibia: Bufonidae) de las partes altas de la Cordillera Oriental Colombiana

open access: yesCaldasia, 2001
Se nominan y describen tres nuevas especies de Atelopus del grupo ignescens (sensu Lynch 1993) de las partes altas, en páramos y bosques nublados, de la Cordillera Oriental colombiana.Tree new species of the genus Atelopus ignescens (sensu Lynch 1993 ...
Osorno Muñoz Mariela   +2 more
doaj  

Genetic Reference Gaps Limit eDNA Metabarcoding and Biodiversity Monitoring of Tropical Mangrove Ecosystems

open access: yesEnvironmental DNA, Volume 8, Issue 3, May–June 2026.
This review reveals major genetic data gaps for Philippine mangrove fauna, especially invertebrates, limiting species‐level eDNA detection. By compiling 48 years of biodiversity records and assessing reference library coverage, it highlights the need for targeted sequencing and shows how integrating eDNA with conventional surveys strengthens monitoring
Earl Kevin T. Cooper   +14 more
wiley   +1 more source

The role of inversion tectonics in the structure of the Cordillera Oriental (NW Argentinean Andes)

open access: yesJournal of Structural Geology, 2006
The Salta Basin of Cretaceous age in the Andes of NW Argentina was inverted during the development of the Cordillera Oriental between the Neogene and Recent. The different orientations of the extensional faults of the Salta Rift System and the subsequent W-E shortening resulted in a great variety of inversion structures.
Carrera, N.   +4 more
openaire   +2 more sources

A new minute Andean Pristimantis (Anura: Strabomantidae) from Venezuela [PDF]

open access: yesPhyllomedusa: Journal of Herpetology, 2012
A new species of Pristimantis is described from the Venezuelan Andes. The new species is the smallest in its genus known in Venezuela and belongs to the Pristimantis unistrigatus Group.
Cesar L. Barrio-Amorós   +2 more
doaj   +1 more source

Epidendrum chloronanum (Orchidaceae): primer registro en la flora de Colombia

open access: yesRevista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales
Orchidaceae es un grupo de plantas de gran diversidad. Una quinta parte de sus especies se encuentran registradas en Colombia, principalmente en la cordillera de los Andes.
Javier Cuellar   +3 more
doaj   +1 more source

Some new palynomorphs from the Silurian of the Quetame Massif, Cordillera Oriental, Colombia, South America

open access: yesBoletín Geológico, 1994
During a palynological investigation of Paleozoic series in the Colombian Cordillera Oriental Silurian-indicating fossils were found in Colombia. In this paper we describe four palynomorphs which were significant for the Silurian of the Quetame Massif.
Klaus F. Prossl, Joachim R. Grosser
doaj   +1 more source

Agrarian counterpoint

open access: yesAmerican Ethnologist, Volume 53, Issue 2, Page 171-182, May 2026.
Abstract In Colombia's northeastern borderlands, agrarian economies shape how disease risk and stigma are understood and managed. As shown in ethnographic fieldwork in and around the Catatumbo region, cutaneous leishmaniasis—a sandfly‐transmitted disease that produces chronic skin lesions—appears in two radically different guises across adjacent ...
Javier Lezaun, Lina Pinto‐García
wiley   +1 more source

Late Pleistocene glacial fluctuations in Cordillera Oriental, subtropical Andes

open access: yesQuaternary Science Reviews, 2017
Abstract The behavior of subtropical glaciers during Middle to Late Pleistocene global glacial maxima and abrupt climate change events, specifically in Earth's most arid low-latitude regions, remains an outstanding problem in paleoclimatology. The present-day climate of Cordillera Oriental, in arid northwestern Argentina, is influenced by shifts in ...
Mateo A. Martini   +6 more
openaire   +2 more sources

New species of Eleutherodactylus of Colombia (Amphibia: Leptodactylidae). I: five new species from the paramos of the Cordillera Central New species of Eleutherodactylus of Colombia (Amphibia: Leptodactylidae). I: five new species from the paramos of the Cordillera Central

open access: yesCaldasia, 1980
Se describen aquí las nuevas especies Eleutherodactylus obmutescens, E. racemus y E. simoterus, del grupo unistrigatus, provenientes de los Páramos de Puracé, Las Hermosas y Letras, respectivamente, en la Cordillera Centralde Colombia. Estas especies son
Lynch John D.
doaj  

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