Results 1 to 10 of about 1,647 (178)

Safety and efficacy of a feed additive consisting of an extract of condensed tannins from Schinopsis balansae Engl. and Schinopsis lorentzii (Griseb.) Engl. (red quebracho extract) for use in all animal species (FEFANA asbl). [PDF]

EFSA J, 2022
Abstract Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of an extract of condensed tannins from Schinopsis balansae Engl. and Schinopsis lorentzii (Griseb.) Engl. (red quebracho extract) when used as a sensory additive in feed and water for drinking for all animal species. The
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP), Bampidis V, Azimonti G, Bastos ML, Christensen H, Fašmon Durjava M, Kouba M, López-Alonso M, López Puente S, Marcon F, Mayo B, Pechová A, Petkova M, Ramos F, Sanz Y, Villa RE, Woutersen R, Brantom P, Chesson A, Westendorf J, Manini P, Pizzo F, Dusemund B.   +22 more
europepmc   +2 more sources

Quantifying the Spatial Footprint of Agriculture-Driven Edge Effects in a Global Deforestation Hotspot. [PDF]

Glob Chang Biol
Tropical dry forests face increasing pressure from agricultural expansion, but how this expansion impacts on remaining forests is unclear. We quantified and mapped agricultural edge effects on tree cover, shrub cover, and above‐ground biomass in the Argentine Chaco, a global deforestation hotspot.
Torrella S, Baumann M, Pratzer M, Aguiar S, Piquer-Rodríguez M, Ginzburg R, Pizarro GG, Kuemmerle T.   +7 more
europepmc   +2 more sources

Seed production in relation to fruit size of quebracho blanco (Aspidosperma quebracho-blanco) in the semiarid Chaco forest [PDF]

Bosque (Valdivia), 2012
Para manejar y conservar una población biológica es necesario conocer las etapas de su ciclo de vida. El quebracho blanco es una especie clave en el ecosistema chaqueño y es necesario emprender estudios relacionados con su producción de semillas.
Cardozo, Silvana, Mohr, Federico, Tálamo, Andrés   +2 more
core   +4 more sources

First report of colonies of sylvatic Triatoma infestans (Hemiptera: Reduviidae) in the Paraguayan Chaco, using a trained dog. [PDF]

PLoS Neglected Tropical Diseases, 2011
In the Gran Chaco region, control of Triatoma infestans has been limited by persistent domestic infestations despite the efforts of the Vector Control Services.
Miriam Rolón, María Celeste Vega, Fabiola Román, Ana Gómez, Antonieta Rojas de Arias   +4 more
doaj   +2 more sources

Anatomia descritiva da madeira de quebracho-branco (Aspidosperma quebracho-blanco Schlecht.) [PDF]

Ciência e Natura, 1985
The gross, macroscopic and microscopic wood structure of Aspidosperma quebracho-blanco Schlecht. are described. The quantitative and histometric secondary xylem data obtained, as well as photomicrographs of the wood, are also furnished.São descritos os ...
Marchiori, José Newton Cardoso
core   +2 more sources

ARBOREAL VEGETATION ASPECTS ON A SEASONAL STEPPE SAVANNA REMAINING, IN BARRA DO QUARAÍ, RS STATE, BRAZIL [PDF]

Ciência Florestal, 2014
http://dx.doi.org/10.5902/1980509813320The purpose of this study was to evaluate the floristic composition, the horizontal and vertical structures, as well as the spatial distribution patterns of the tree component in a Steppe Savanna Park located at ...
Luciano Farinha Watzlawick, Solon Jonas Longhi, Paulo Renato Schneider, César Augusto Guimarães Finger   +3 more
doaj   +4 more sources

EVALUACIÓN DE TRES ADHESIVOS EN LA FABRICACIÓN DE TABLEROS ENLISTONADOS DE Aspidosperma quebracho blanco ESTABILIZADO CON POLIETILENGLICOL

Revista Chapingo: Serie Ciencias Forestales y del Ambiente, 2011
En este trabajo se evaluó que tipo de adhesivo es factible de utilizar en la fabricación de tableros enlistonados de madera de Aspidosperma quebracho-blanco impregnada con polietilengliol (PEG).
Ernesto Osvaldo Sanabria, María Elisa Cayré, Walter Adrián Frank   +2 more
doaj   +2 more sources

Variabilidad radial de algunos caracteres anatómicos de Aspidosperma quebracho blanco

Bosque, 2001
Radial wood variation patterns of Aspidosperma quebracho blanco, one of the most important species of the Dry Chaco Region, and their influence on wood quality are reported in this study. Pattern variations of wood density, frequency and diameter of pore vessels and fiber length were examined using sites, trees and radial distances as sources of ...
Juana Graciela Moglia, Carlos Raul Lopez
exaly   +2 more sources

Crecimiento en plantas jóvenes de Aspidosperma quebracho-blanco Schlecht

Lilloa, 2006
Alzugaray, C.; N. J. Carnevale y A. R. Salinas, 2006. ?Crecimiento en plantas jóvenes de Aspidosperma quebracho-blanco Schlecht?. Lilloa 43 (1-2). A. quebracho-blanco es uno de los árboles característicos de La Provincia Chaqueña.
C. Alzugaray, n. J. Carnevale, A. R. Salinas   +2 more
doaj   +1 more source

Análisis de la diversidad genética en poblaciones fragmentadas y continuas de Aspidosperma quebracho-blanco (Apocynaceae) del Chaco Semiárido

Boletín de la Sociedad Argentina de Botánica
Introducción y objetivos: La pérdida y fragmentación del bosque chaqueño, provocadas por su deforestación, podría tener un impacto significativo en la diversidad genética de las especies que lo habitan. Análisis previos en Aspidosperma quebracho-blanco,
Noelia E. A. Almirón, Viviana Solís Neffa   +1 more
doaj   +3 more sources