Results 31 to 40 of about 284 (121)

Experimentos computacionales con métodos lineales en el reconocimiento taxonómico de insectos

open access: yesMaskana, 2017
Métodos de reconocimiento de objetos se aplicaron para la clasificación taxonómica mediante extracción de información característica de imágenes de alas de insectos. Se compara las alas de dos grupos de insectos (Hemiptera: Triatominae y Ceratopogonidae:
Diego R. Ochoa-Tocachi   +4 more
doaj  

Wood density variation across an Andes‐to‐Amazon elevational gradient

open access: yesJournal of Ecology, Volume 113, Issue 9, Page 2370-2385, September 2025.
We study how wood density varies along a 3500‐m elevational gradient, spanning from the Andean tree line to the Amazon basin. Our results reveal that wood density decreases from low to mid‐elevations, then increases toward the tree line. These patterns underscore the influence of species composition, life forms such as tree ferns, and local ...
William Farfan‐Rios   +17 more
wiley   +1 more source

Reseña. Sebastián Gómez González, Frontera selvática. Españoles, portugueses y su disputa por el noroccidente amazónico, siglo XVIII

open access: yesRevista Tiempo & Economía, 2015
El desconocimiento de la región amazónica ha sido un factor común en diferentes momentos de la historia. Desde la Colonia, la era republicana, incluso en la actualidad, ese desconocimiento ha conducido a que la cuenca amazónica se vea como una región ...
Óscar Granados
doaj  

The American cocoa pod borer, Carmenta foraseminis, an emerging pest of cocoa: A review El barrenador americano de la mazorca de cacao, Carmenta foraseminis, una plaga emergente del cacao: una revisión

open access: yesAgricultural and Forest Entomology, Volume 27, Issue 3, Page 340-356, August 2025.
Abstract This review provides a synthesis of the available knowledge on Carmenta foraseminis, an emerging cocoa pest in northern South America. This moth was first described in 1995 in Panama, and its proliferation across the Amazon basin is currently threatening the production of cocoa in the region and may endanger the sector's sustainability. Hence,
Mónica Arias   +9 more
wiley   +1 more source

Sebastián Gómez González, Frontera selvática. Españoles, portugueses y su disputa por el noroccidente amazónico, siglo XVIII

open access: yesRevista Tiempo & Economía, 2015
El desconocimiento de la región amazónica ha sido un factor común en diferentes momentos de la historia. Desde la Colonia, la era republicana, incluso en la actualidad, ese desconocimiento ha conducido a que la cuenca amazónica se vea como una región ...
Óscar Granados
doaj  

On the Lack of Domestic Dogs in Pre‐Columbian Lowland Amazonia and Their Deep History of Entanglements With Humans in South America

open access: yesThe Journal of Latin American and Caribbean Anthropology, Volume 30, Issue 2, June 2025.
ABSTRACT Data from archaeology, ethnography, and ethnohistory document entanglements of dogs among South American Indigenous societies during pre‐Columbian and colonial times. The prolific presence and uses of dogs in the Central Andes and in parts of the Paraná Basin, Patagonia, and Circum‐Caribbean regions contrast with the conspicuous lack of ...
Marcelo R. Sánchez‐Villagra   +2 more
wiley   +1 more source

SUBDIVISIÓN DEL TIEMPO GEOLÓGICO EN LA AMAZONÍA PERUANA

open access: yesCiencia Amazónica (Iquitos), 2011
Mucho antes que el ser humano recorriera las tierras de nuestra cuenca,  sabana de la selva amazónica, existieron mares, grandes ríos, montañas y llanuras en lo que ahora es nuestro hábitat.
Fredy Hugo Guerra Turín
doaj   +3 more sources

Presentación del dossier. La Amazonía en la agenda global

open access: yesÍconos, 2006
La cuenca amazónica abarca más de 7,3 millones de km? y agrupa a 30 millones de habitantes de nueve países (Brasil, Bolivia, Colombia, Ecuador, Perú, Venezuela, Guyana, Surinam y la Guyana Francesa). Si bien es cierto que la integración administrativa y
Guillaume Fontaine
doaj   +1 more source

‘Sowing and harvesting water’: Revisiting forest restoration in the Peruvian Andes through a multi‐stakeholder analysis

open access: yesPeople and Nature, Volume 7, Issue 3, Page 631-652, March 2025.
Abstract Efforts to restore Peru's megadiverse Andean Forests are rapidly growing. While ecological determinants for restoration success are well known, knowledge on the socio‐economic and governance conditions that allow for the success of ecological restoration using native species is scarce.
Tina Christmann   +15 more
wiley   +1 more source

The Wayqecha Amazon Cloud Curtain Ecosystem Experiment: A new experimental method to manipulate fog water inputs in terrestrial systems

open access: yesMethods in Ecology and Evolution, Volume 16, Issue 2, Page 400-413, February 2025.
Abstract Fog makes a significant contribution to the hydrology of a wide range of important terrestrial ecosystems. The amount and frequency of fog immersion are affected by rapid ongoing anthropogenic changes but the impacts of these changes remain relatively poorly understood compared with changes in rainfall.
Daniel B. Metcalfe   +15 more
wiley   +1 more source

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