Results 51 to 60 of about 10,594 (158)

Patterns and Drivers of Tree Species Accumulation in Three Biodiversity Hotspots of Northwestern South America

open access: yesJournal of Biogeography, Volume 52, Issue 12, December 2025.
ABSTRACT Aim This study aims to understand the relative importance of climatic anomalies since the Last Glacial Maximum (LGM) and regional biogeographic (evolutionary) features as drivers of local and regional tree species accumulation across three neotropical biodiversity hotspots in northwestern South America (Northwestern Amazon, Northern Andes and ...
Camilo Palacios‐Hurtado   +13 more
wiley   +1 more source

Nuevos registros de Hepáticas y Anthocerotófitas para Panamá [PDF]

open access: yes, 2006
Twenty eight hepatics and eight hornwort species are reported as new to Panama. Data on their habitat, local and general distribution and are included. One species, Cololejeunea panamensis G. Dauphin & Pócs is described as new to science.
Dauphin L., Gregorio   +3 more
core  

Overcoming Title 42 and the 2022‐3 Venezuelan Migrant Expulsion Spectacle: A Border Securocracy Case Study

open access: yesPolitics &Policy, Volume 53, Issue 6, December 2025.
ABSTRACT On October 12, 2022, the Biden administration abruptly changed course and announced that Venezuelan refugees would be immediately subject to Title 42—the policy that effectively means that those migrants would be summarily forced to return, or expelled, to Mexico.
Terence Michael Garrett   +1 more
wiley   +1 more source

Hunger and Repression: Pre‐Departure Experiences and PTSD Risk Among Venezuelans in the United States and Colombia

open access: yesJournal of Community &Applied Social Psychology, Volume 35, Issue 6, November/December 2025.
ABSTRACT Venezuela's national collapse has been one of the most remarkable in recent history. Marked by widespread scarcity, deep poverty, and persistent concerns about authoritarian governance, the crisis has prompted the emigration of ~8 million people since 2015—more than 25% of the once‐prosperous nation's population.
Christopher P. Salas‐Wright   +13 more
wiley   +1 more source

Evaluación de generaciones segregantes de fríjol Phaseolus vulgaris L. en campos de agricultores en contraste a la realizada en estación experimental

open access: yesActa Agronómica, 1995
<p>This study was conducted at CIAT, in both the research station and fanners' plots, in the Darién area, of the Cauca Valley Department, between 1989 and 1991.
Beltrán Jorge Alonso   +2 more
doaj  

Registros notables del Oso de Anteojos Tremarctos ornatus (Carnivora: Ursidae) en el norte de Antioquia, Colombia.

open access: yesMammalogy Notes, 2014
El oso andino, Tremarctos ornatus, es el único oso viviente y representativo de la subfamilia Tremarctinae en América del Sur. Su distribución comprende desde la Cordillera de Mérida en el noroeste en Venezuela, los  Andes de Colombia, Ecuador, Perú ...
Andrés Arias-Alzate   +1 more
doaj   +1 more source

REPORTES FOTOGRÁFICOS DEL MOSQUERO BERMELLÓN (Pyrocephalus rubinus) EN PANAMÁ

open access: yesTecnociencia, 2020
Presentamos dos registros fotográficos del Mosquero Bermellón (Pyrocephalus rubinus) en Panamá. Una hembra fue registrada el 29 de marzo de 2019 en la Comunidad de Sinaí, Río Membrillo, Comarca Emberá y Wounaan, provincia de Darién (8° 36' 51.2" N; 77 ...
Jorge Moisés Herrera R   +1 more
doaj   +1 more source

Análisis de vulnerabilidad para el cultivo de café: zona norte del Valle del Cauca [PDF]

open access: yes, 2016
El presente estudio hace parte del convenio celebrado entre la Corporación Autónoma Regional del Valle del Cauca (CVC) y el Centro Internacional de Agricultura Tropical (CIAT), denominado “Aunar esfuerzos y recursos humanos, económicos y técnicos ...
Corporación Autónoma Regional del Valle del Cauca   +1 more
core  

The Migration–Development Nexus Revisited: A Place‐based Mobility Perspective from the Borderlands

open access: yesDevelopment and Change, Volume 56, Issue 6, Page 1197-1227, November 2025.
ABSTRACT Migration, a fundamental characteristic of planetary life and human livelihood, has been considered a key driver of development. However, as identified by critical migration and mobility scholars, the assumed positive relationship to development has been predominantly informed by a neoliberal, managerial and sedentary view of migration ...
Zeynep Kaşlı, Nanneke Winters
wiley   +1 more source

Presentación: Los nervios sutiles de la guerra: estrategia, imperio e información en el siglo XVIII

open access: yesStudia Historica: Historia Moderna
Se destaca la importancia de la información en la guerra del siglo XVIII y en la configuración del poder imperial hispánico. Más allá de batallas y recursos materiales, la Monarquía dependió de observaciones militares, informes, mapas, espionaje y redes ...
Guadalupe Carrasco González
doaj   +1 more source

Home - About - Disclaimer - Privacy