Results 41 to 50 of about 146,043 (213)

Ensuring Pollinator Presence in Expanding Oil Crops: The Case of Mystrops debilis (Nitidulidae) and the Macauba Palm (Acrocomia aculeata, Arecaceae)

open access: yesJournal of Applied Entomology, Volume 149, Issue 8, Page 1180-1195, September 2025.
ABSTRACT The macauba palm (Acrocomia aculeata, Arecaceae) is a Neotropical native oil palm, increasingly important in Central and South America due to rising demand for raw materials and its potential for bioenergy. Understanding its pollinator ecology is crucial to identify new areas for cultivation. This study examines the structure of floral visitor
Javier Carreño‐Barrera   +3 more
wiley   +1 more source

El TIDM como medio de solución de controversias y aplicación del principio precautorio: ¿consolidación o redefinición conceptual? [PDF]

open access: yes, 2013
El presente trabajo sistematiza y analiza la jurisprudencia del Tribunal Internacional del Mar del en materia de aplicación del principio precautorio, con el fin de verificar si existe o no una práctica coherente, consistente y uniforme en esa materia ...
Garcia Elorrio, Magdalena
core   +1 more source

Persisting at the Edge of Ecological Collapse: The Impact of Urbanization on Fish and Amphibian Communities From Lake Xochimilco

open access: yesEnvironmental DNA, Volume 7, Issue 4, July–August 2025.
ABSTRACT Freshwater ecosystems are globally threatened by habitat loss, pollution, and invasive species, all of which are particularly acute in urban areas. To assess the impacts of urbanization on freshwater biodiversity—specifically the effects of alien species on native primary aquatic vertebrates—we investigated the World Heritage Site, Lake ...
Alejandro Maeda‐Obregon   +12 more
wiley   +1 more source

Registros notables del Pecarí labio blanco Tayassu pecari (Artiodactyla: Tayassuidae) en el Magdalena Medio de Colombia

open access: yesMammalogy Notes
Presentamos registros recientes y novedosos (a través de fototampeo) del pecarí de labio blanco (Tayassu pecari) en una localidad del Magdalena Medio (DRMI Ciénaga de Barbacoas, Yondó, Colombia) donde la especie se reporta como extinta localmente.
Juan David Sánchez-L   +3 more
doaj   +1 more source

Comparation of two methods for Hevea brasiliensis latex coagulation (Willd. ex A.Juss.) Müll.Arg.

open access: yesTemas Agrarios, 2018
Rubber (Hevea brasiliensis) is a crop widely grown in the Magdalena Medio region in Colombia. To obtain natural rubber, coagulants are used to solidify latex, being formic acid being the most used.
Armando Sarabia Ortíz   +1 more
doaj   +1 more source

A geography of illicit crops (coca leaf) and armed conflict in Colombia [PDF]

open access: yes, 2004
Colombia is currently the world’s largest producer of coca leaf and the principal producer of opium poppies in the Americas; the plants are the basic raw materials used to produce cocaine and heroin.
Díaz, Ana María, Sánchez, Fabio
core  

Climatic and Edaphic Drivers of Soil Organic Carbon and Pyrogenic Carbon Stocks Across Elevation and Disturbance Gradients in Colombian Andean Forests

open access: yesGlobal Change Biology, Volume 31, Issue 7, July 2025.
This study examined soil organic carbon (SOC) and pyrogenic carbon (PyC) stocks in tropical Andean soils across elevation and disturbance gradients in Colombia. SOC stocks to 100 cm depth averaged 433.10 Mg C ha−1 while PyC was 34.13 Mg C ha−1. Key drivers of PyC stocks include soil clay (%), mean annual precipitation (PA), pH, Ca, and NDVI, which ...
Carmen R. Montes‐Pulido   +5 more
wiley   +1 more source

El imaginario regional del Programa de Desarrollo y Paz

open access: yesRevista Controversia, 2003
El Programa de Desarrollo y Paz en el Magdalena Medio (PDPMM) inicia actividades a mediados de 1994, en un momento en el que el conflicto armado se intensifica y amplía en esa región.
Orge Iván González   +2 more
doaj  

COMPARACIÓN GEOGRÁFICA Y TEMPORAL DE LA AVIFAUNA DE LA SERRANÍA DE LA PAZ EN SANTANDER, COLOMBIA

open access: yesActa Biológica Colombiana
En Santander, Colombia, asociado al valle del Magdalena Medio se presentan serranías con remanentes boscosos que contrastan con las zonas deforestadas de las partes bajas.
Enrique Arbeláez-Cortés   +3 more
doaj   +1 more source

Participación electoral en el Magdalena Medio colombiano. Un análisis del posacuerdo con las FARC

open access: yesOpera, 2019
La región del Magdalena Medio colom­biano es uno de los territorios mayormente afectados por el control político y social que ejercieron las Fuerzas Armadas Revolucionarias de Colombia (Farc), en especial en los muni­cipios ubicados en la periferia ...
Flor Manuelita Barrios
doaj   +1 more source

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