Results 21 to 30 of about 242,539 (214)

Dinámica natural y respuesta al raleo de árboles juveniles de lenga (Nothofagus pumilio) en bosques secundarios en Patagonia Sur [PDF]

open access: yes, 2013
For saw-log production, planned thinning in secondary forests may reduce the time to yield products of a desired size and quality. To explore some options, long-term monitoring plots were established in 1996 in two secondary stands of Nothofagus pumilio (
Martínez Pastur, Guillermo José   +2 more
core   +3 more sources

Structuring different manifestations of misinformation for better policy development using a decision tree‐based approach

open access: yesPolicy &Internet, EarlyView.
Abstract The spread of false and misleading information in digital communication spaces has enormous potential for harm in democratic societies, but has so far been insufficiently addressed by policy makers. This problem has been exacerbated by recent technological developments such as deepfakes.
Olivia Hägle   +3 more
wiley   +1 more source

Árboles [PDF]

open access: yes, 1992
Comparativa de lo que debe hacer una persona para crecer tan fuerte como un ...
García Verduch, Antonio
core  

High extinction risk of the endemic tree flora in a hyper‐diverse region of the Amazon

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
The rapid global loss of biodiversity, especially in the Neotropics, underscores the need to understand how deforestation impacts endemic plant species' extinction risk and conservation status. Due to limited ranges and habitat specialization, endemics are particularly Vulnerable.
Juan Ernesto Guevara‐Andino   +2 more
wiley   +1 more source

Beneficios de la integración de árboles maderables en sistemas ganaderos convencionales : Caso de estudio - Finca Nápoles, Montenegro Quindío [PDF]

open access: yes, 2017
En este trabajo se evaluaron los beneficios de incorporar árboles maderables en sistemas ganaderos convencionales, en el departamento del Quindío específicamente municipio de Montenegro.
Sánchez Ortíz, Jessica María
core  

Primera Aproximación al polen conservado en un espacio megalítico del cantábrico occidental: El dolmen de corredor de la Cobertoria (3500 a. c.), Salas, Asturias

open access: yesZephyrus, 2023
El presente trabajo es parte de la información obtenida entre 2016 y 2019 en las excavaciones del dolmen de corredor de la Cobertoria: especialmente, en la última de las fases constructivas del megalito, datada por radiocarbono a mediados del cuarto ...
Fernando Rodríguez del Cueto   +3 more
doaj   +1 more source

Developing epidemiological preparedness for a plant disease invasion: Modelling citrus huánglóngbìng in the European Union

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Huánglóngbìng (HLB) is a bacterial disease of citrus that has significantly impacted Brazil and the United States, although citrus production in the Mediterranean Basin remains unaffected. By developing a mathematical model of spread in Spain, we tested surveillance and control strategies before any future HLB entry in the EU.
John Ellis   +9 more
wiley   +1 more source

Evaluación de Ethephon y ABA como defoliantes y sus efectos en la salida de receso, brotación y retorno floral en manzanos cv. Ultra Red Gala [PDF]

open access: yes, 2014
54 p.Se evaluó Ethephon y ABA como defoliantes y sus efectos en el tiempo de salida de receso, brotación y retorno floral en árboles de manzano adultos cv. Ultra Red Gala.
Palma Gutíerrez, Miguel Alexis   +2 more
core  

Design, construction and testing of an apricot tractor-trailed harvester [PDF]

open access: yes, 2008
[ENG]The purpose of this research is to facilitate the mechanical harvesting of apricots (Prunus armeniaca L.) for industry. A tractor-trailed harvester was built to catch the fruits detached from apricot (cv. Búlida) trees by vibratory systems.
Bernad Godina, José Juan   +7 more
core   +5 more sources

Cambios en el banco de semillas por la invasión de Baccharis dracunculifolia y Racosperma melanoxylon en ambientes serranos del Sistema de Tandilia, Buenos Aires

open access: yesEcología Austral
El análisis de los cambios que producen la invasión de especies vegetales sobre la estructura de las comunidades de pastizales y la planificación de la restauración de las especies nativas deben incluir el estudio del banco de semillas.
Osvaldo R. Vignolio   +3 more
doaj   +1 more source

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