Results 71 to 80 of about 62,404 (240)
Earth Surface Processes and Landforms, Volume 51, Issue 3, March 2026.Eighteen boreholes in Colombia's Tropical Andes reveal elevation‐controlled Critical Zone architecture. Four‐layer weathering profiles with thick saprolite (≤48 m) form at high elevations (>1,100 m) where dense fracturing enhances permeability. Low‐elevation boreholes lack saprolite despite high fracture density, demonstrating fracturing's dual role as
Helbert Garcia‐Delgado +2 more
wiley +1 more source
Bromelias de Colombia: una especie nueva de Pitcairnia
Caldasia, 1995 A new species of Pitcairnia (Bromeliaceae) is described, ilustrated and discussed. This species is found in the Cordillera Central of Colombia, departamento de Antioquia, in a relictual humid mountain forestSe describe, ilustra y discute una nueva ...
Betancur Betancur Julio Cesar
doaj
La evolución estructural de los andes más septentrionales de Colombia
Boletín Geológico, 1971 El Escudo Guayanés primario, al norte de Suramérica, es más antiguo que el metamorfismo del complejo eugeosinclinal· de Imataca al sudeste de Venezuela el cual tuvo lugar hace 3000 millones de años.
Earl M. Irving
doaj +1 more source
Climate Change in the High Andes:implications and adaptation strategies for small-scale farmers [PDF]
, 2010 : Global climate change represents a major threat to sustainable farming in the Andes. Farmers have used local ecological knowledge and intricate production systems to cope, adapt and reorganize to meet climate uncertainty and risk, which have always ...
Dangles, O. +7 more
core +2 more sources
Ecosphere, Volume 17, Issue 2, February 2026.Abstract The Andean Altiplano in South America represents a remarkable mountain ecosystem with unique wildlife. However, knowledge of breeding ecology for birds inhabiting Andean Altiplano is scarce, relying mostly on anecdotal records, and drivers of breeding phenology remain unexplored.
Guillaume Dillenseger +7 more
wiley +1 more source
Una nueva especie de Palicourea (Rubiaceae) de Colombia
Caldasia, 1997 Palicourea frontinoensis, a new species from western cordillera in Colombia, is described and ilustrated. The affinities of the new taxon with Palicourea bella (Standley) Dwyer and Palicourea spathacea C. M.
Gogollo P. Alvaro, Taylor Charlotte M.
doaj
Sciodaphyllum sonsonense, una nueva araliácea del bosque altoandino de Antio-quia, Colombia
Caldasia, 2019 La especie nueva, nombrada Sciodaphyllum sonsonense, se encuentra en los bosques altoandinos del norte de la Cordillera Central en Antioquia, Colombia. Este taxón comparte algunas características morfológicas con S. huilense y S.
Jáider Jiménez-Montoya +1 more
doaj +1 more source
A guide to fieldstations in the tropics : 3., Colombia [PDF]
, 1992 “El Refugio” Biological Station will be open as of Juni 1989 for persons or organizations of all nationalities. The station offers logistic support for activities with educational, conservational or research purposes.
Frahm, Jan-Peter
core
Detrital zircon typology and U/Pb geochronology for the Miocene Ladrilleros-Juanchaco sedimentary sequence, Equatorial Pacific (Colombia) : new constraints on provenance and paleogeography in northwestern South America [PDF]
, 2017 Typology and internal texture analyses were performed on detrital zircons obtained from the Miocene sandstones of the Ladrilleros-Juanchaco sedimentary sequence (Colombia, Equatorial Pacific).
Barbosa-Espitia, A.A. +5 more
core +3 more sources
Biotropica, Volume 58, Issue 1, January 2026.Nectar is a highly variable, mostly unpredictable resource in tropical mountains. How do nectarivorous birds such as this male Great Sapphirewing cope? Fine‐scaled tracking of hummingbirds and flowerpiercers shows flexibility in daily movement strategies in the high Andes, possibly in response to fluctuating local conditions such as weather and ...
Cristina Rueda‐Uribe +9 more
wiley +1 more source