Results 41 to 50 of about 792 (171)

Transient Cenozoic tectonic stages in the southern margin of the Caribbean plate: U-Th/He thermochronological constraints from Eocene plutonic rocks in the Santa Marta massif and Serranía de Jarara, northern Colombia

open access: yesGeologica Acta, 2011
We use U-Th/(He) zircon and apatite thermochronology and Al in hornblende geobarometry from Eocene granitoids of the Sierra Nevada de Santa Marta and Guajira uplifted massifs in northern Colombia to elucidate the exhumation history of the northern South ...
A. CARDONA   +9 more
doaj  

The Link Between Range Size, Niche Specialisation and Diversification in One of the Most Successful Avian Radiations, the New World Flycatchers (Tyrannoidea)

open access: yesJournal of Biogeography, Volume 52, Issue 11, November 2025.
ABSTRACT Aim Range size constitutes a fundamental characteristic of every species and is commonly believed to influence diversification rates. This relationship is potentially dependent on the mode of speciation and other intrinsic factors, including geographic setting and species attributes. Yet, not only the size of the geographic range, but also the
Vicente García‐Navas, Les Christidis
wiley   +1 more source

Consideraciones sobre la morfología, anatomía y posición sistemática de Vesicarex Steyermark (Cyperaceae)

open access: yesActa Biológica Colombiana, 1982
En los páramos ocurren con relativa frecuencia angiospermas de porte arrosetado cespitoso. Entre tales se cuenta la diminuta ciperácea Vesicarex collumanthus Steyerm, descrita por Julian Steyermark (1951,63) como especie típica y hasta la fecha única del
Luis Eduardo Mora-Osejo
doaj  

Cosmovisión, chamanismo y ritualidad en el mundo prehispánico de Colombia. esplendor, ocaso y renacimiento

open access: yesMaguaré, 2011
Se analizan tres ejemplos de sitios con posible presencia de chamanismo prehispánico: los Andes Orientales, el Valle del Cauca y la Sierra Nevada de Santa Marta, con el fin de abordar la problemática de la profundidad temporal de esta institución, sus ...
José V. Rodríguez Cuenca
doaj   +4 more sources

Una propuesta metodológica en etnomatemáticas

open access: yesRevista U.D.C.A Actualidad & Divulgación Científica, 2008
En este artículo, se presenta la síntesis de una propuesta metodológica en etnomatemática producto de tres años de investigación, cuyo objetivo fundamental fue construir un plan de enseñanza de geometría para los indígenas arhuacos de la Sierra Nevada de
Armando Aroca Araújo
doaj   +1 more source

Present importance of coffe production in some coffe grower communities and indian comunities in the Sierra Nevada de Santa Marta Importancia actual de la caficultora en algunas comunidades campesinas e indígenas de la Sierra Nevada de Santa Marta

open access: yesAgronomía Colombiana, 1993
Coffe production followed by coffe growers and indian groups in the Sierra Nevada de Santa Marta, shows several differences regarding economical rationalityandtechnology.
Herrera Rojas Gilberto
doaj  

First record of Ninia atrata (Hallowell, 1845) (Squamata: Colubridae) from Sierra Nevada de Santa Marta, northern Colombia [PDF]

open access: yesCheck List, 2015
The current work provides the first confirmed record of Ninia atrata in the northern foothills of the Sierra Nevada de Santa Marta, La Guajira department, Colombia. This record extends the Colombian known species’ distribution ca.
Fabio Meza-Joya
doaj   +3 more sources

Ti-clinohumite in the Ciénaga skarn-type mineralogy, Sierra Nevada de Santa Marta Massif (Colombia): Occurrence and petrologic significance

open access: yesEarth Sciences Research Journal, 2015
This study reports the occurrence and petrologic significance of Ti-clinohumite for the first time in the Ciénaga skarn, Sierra Nevada de Santa Marta Massif. Ti-Clinohumite occurs as thin bands hosted in the Ciénaga Marbles of lower Cretaceous age, which
Carlos Alberto Ríos   +2 more
doaj   +1 more source

Una nueva variedad de centrosema Macrocarpum Benth. (Leguminoae: Papilionoideae) de los Andes Colombianos

open access: yesCaldasia, 1995
A new variety of Centrosema macrocarpum is described. It occurs only in Colombia, mainly at intermediate altitudes (1000-2000 m) in the Andes and the Sierra Nevada de Santa Marta. Diagnostic features of the variety are the reddish colour of young leaves,
Schultze Kraft Rainer   +1 more
doaj  

Range‐restricted species are poor proxies for functional diversity in the world's largest avifauna

open access: yesConservation Science and Practice, Volume 7, Issue 9, September 2025.
We assessed the relationship between avian taxonomic richness (four metrics) and functional diversity (three metrics) across Colombia, the country with the most bird species. We found total species richness and threatened species richness to be suitable proxies for both functional richness and evenness. Protecting the eastern slope of the Eastern Andes
Montague H. C. Neate‐Clegg   +4 more
wiley   +1 more source

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