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Mostrando ítems 404-423 de 570
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Physiological and morphological short-term responses to light and temperature in two Nothofagus species of Patagonia, South America
(2012-12)The study of plant responses to environmental stress factors is essential for management of plant systems and for anticipating their response to climate change. The main goal of this study was to determine morphological ... -
Physiological status of conifer seedlings treated with radiation, drought and frost stress mitigation techniques: a laboratory assessment
(2016)En la región oriental del noroeste de la Patagonia, se levanta del rápido crecimiento de coníferas exóticas Pinus ponderosa (pino ponderosa) y Pseudotsuga menziesii (Abeto de Douglas) se están estableciendo en lugares que ... -
Physiological stress responses and meat quality traits of kids subjected to different pre-slaughter stressors
(Elsevier, 2011-10)Crossbred Criollo Neuquino castrated male kids, 6 months of age and 24 kg of live weight, were used to investigate the effects of pre-slaughter stressors on physiological characteristics and meat quality attributes. On ... -
Pine plantations and invasion alter fuel structure and potential fire behavior in a patagonian forest-steppe ecotone
(2018-03-03)Planted and invading non-native plant species can alter fire regimes through changes in fuel loads and in the structure and continuity of fuels, potentially modifying the flammability of native plant communities. Such ... -
Plant species richness and shrub cover attenuate drought effects on ecosystem functioning across Patagonian rangelands
(2014-10-22)Drought is an increasingly common phenomenon in drylands as a consequence of climate change. We used 311 sites across a broad range of environmental conditions in Patagonian rangelands to evaluate how drought severity and ... -
Plantación de especies forestales nativas en matorrales de Patagonia norte: respuesta a la apertura inicial de dosel en sitios contrastantes = Planting native forest species in northern Patagonian woodlands: response to canopy opening in contrasting sites
(Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile, 2023-05)Una estrategia de manejo forestal que podría combinar exitosamente la producción y la conservación de la biodiversidad en bosques naturales, es su enriquecimiento con árboles nativos de valor maderero. En ciertos bosques ... -
Point of no return? Rehabilitating desgraded soils for increased crop productivity on samllholder farmas in eastern Zimbabwe
(2015-02)Soil degradation is a major threat to Southern Africa's agricultural production. Crops show generally weak responses to mineral fertilizers on degraded soils. A three-year study was conducted between 2009 and 2012 on ... -
Polistes dominula (Hymenoptera: Vespidae) paper wasps detect native grasshoppers using olfactory cues
(Wiley, 2023-10)Polistes dominula is an invasive social wasp that preys on the grasshopper Dichroplus elongatus, which constitutes a potential agricultural pest in Northwest Patagonia. This grasshopper feeds on a wide variety of plants, ... -
Population ecology and classical biological control of forest insect pests in a changing world
(Elsevier, 2022-09-15)Forests are important for climate regulation and provide wood and fiber to an increasing human population. Forest systems encompass a large part of the world’s land surface area and they are increasingly threatened by ... -
Population genetic structure and historical dispersal patterns in the subterranean rodent Ctenomys “chasiquensis” from the southeastern Pampas region, Argentina
(Elsevier, 2016-05)Gene flow plays an essential role in the evolutionary history of the organisms and helps to identify those historical landscape features that most likely had affected the dispersal patterns. In this work, we assess, using ... -
Potencial toxigénico de Astragalus pehuenches Nierdel en Argentina
(Gerencia de Comunicación e Imagen Institucional, DNA SICC, INTA, 2018-12)El género Astragalus está ampliamente distribuido en el mundo y algunas especies son tóxicas para el ganado. En Argentina, Astragalus pehuenches ha sido incriminado históricamente en casos de intoxicación en ovinos, bovinos ... -
Potencial uso en la evaluación de lanas y fibras de animales de un novedoso caracterizador electrónico
(Universidad Mayor de San Marcos. Facultad de Medicina Veterinaria, 2018)Se desarrolló y validó un novedoso Caracterizador Electrónico de Fibras (CEF). En el desarrollo del CEF se utilizaron y ensamblaron componentes mecánicos, ópticos, electrónicos e informáticos. Para la calibración, validación ... -
Potencial uso en la evaluación de lanas y fibras de animales de un novedoso caracterizador electrónico
(Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos (Perú), 2018)Se desarrolló y validó un novedoso Caracterizador Electrónico de Fibras (CEF). En el desarrollo del CEF se utilizaron y ensamblaron componentes mecánicos, ópticos, electrónicos e informáticos. Para la calibración, validación ... -
Potential impact of the leaf‐cutting ant Acromyrmex lobicornis on conifer plantations in northern Patagonia, Argentina
(Wiley, 2011-05)The economic losses associated with crop damage by invasive pests can be minimized by recognizing their potential impact before they spread into new areas or crops. We experimentally evaluated the preferences of the ... -
Pre-Selection test to identify high responder donor goats
(2016)The aim of the study was to evaluate the feasibility of pre-selection of high or low responder does prior to the superovulatory protocols. Twenty Saanen does received 800 IU of equine chorionic gonadotropin (eCG) at the ... -
Predicting North American Scolytinae invasions in the Southern Hemisphere
(2017-01)Scolytinae species are recognized as one of the most important tree mortality agents in coniferous forests worldwide, and many are known invaders because they are easily transported in wood products. Nonnative trees planted ... -
Predicting poaching hotspots in the largest remnant of the Atlantic Forest by combining passive acoustic monitoring and occupancy models
(Elsevier, 2022-08)Poaching can have major impacts on wild animal populations and is pervasive in tropical regions. The spatial distribution of this furtive activity is particularly difficult to estimate in large natural areas, and this ... -
Predicting the distribution of plant species from southern South America: are the hotspots of genetic diversity threatened by climate change?
(Springer, 2024-01)Biodiversity in all its dimensions is being threatened by climate change and the impact of human activities. Genetic diversity is a key dimension of biodiversity underlying adaptation to global changes. Here we assess the ... -
Prediction of hydraulic conductivity loss from relative water loss: new insights into water storage of tree stems and branches
(Wiley, 2019-04)More frequently occurring, drought waves call for a deeper understanding of tree hydraulics and fast and easily applicable methods to measure drought stress. The aim of this study was to establish empirical relationships ... -
Preselection of high and low ovulatory responders in sheep multiple ovulation and embryo transfer programs
(2015)The present study evaluated the feasibility of carrying out an easy-to-handle and cost-efficient test for the preselection of high– and low–ovulatory responder ewes under superovulatory protocols. The test was based on the ...