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Mostrando ítems 388-407 de 562
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Perfiles de diámetro de fibra en lanas preparto de ovejas Merino. 3. Utilización de regresiones P-spline para estudiar el efecto del estado fisiológico
(Asociación Argentina de Producción Animal, 2012)Se estudió el perfil del diámetro de fibras (PDF) de lana de ovejas Merino superfinas (n = 200) en pastoreo en el noroeste de la Patagonia argentina. Las ovejas fueron clasificadas en dos edades (E; Adultas y Viejas) y en ... -
Performance of Angora goats, mohair production, and farmer income in extensive livestock systems of north Patagonia, Argentina
(Frontiers Media, 2023-07)Introduction: In Argentina, mohair production is limited exclusively to the Patagonia region. This activity takes place under different biophysical conditions and with marked seasonality in the climatic conditions and ... -
Perspectives – Academic career in ecology: Effect of gender, caregiving labor, and the working environment
(Elsevier, 2024-05)True meritocracy is only fair when a leveled playing field is guaranteed. Scientists with caregiving responsibilities, often women, carry a heavy burden of unpaid labour, and therefore suffer downfalls in performance. ... -
Pest management of social insects in urban settings
(2017-04)Pest management of social insects in urban environments is a growing global concern, given the problems that these pests generate and the growth of urban areas worldwide. In this special issue, we present studies on the ... -
Phases or regimes? Revisiting NDVI trends as proxies for land degradation
(Wiley, 2018-03)One of the main challenges in land degradation assessment is that a rigorous and systematic approach to addressing its complex dynamics is still missing. The development and application of operative tools at regional and ... -
Phenotypic characterization of the goat population of Santa Elena province (Ecuador)
(UCOPress. Cordoba University Press, 2020)It was proposed to typify phenotypically the goats of the Santa Elena province, Ecuador, and to test if there were different phenotypes. 344 animals were sampled in different types of production systems. The following ... -
Phenotypic plasticity of European larch radial growth and wood density along a-1,000 m elevational gradient
(Wiley, 2021-02)Phenotypic plasticity is a key mechanism for sedentary long-living species to adjust to changing environment. Here, we use mature Larix decidua tree-ring variables collected along an elevational transect in the French Alps ... -
Phenotypic variation of basic wood density in Pinus ponderosa plus trees = Variación fenotípica de la densidad básica de la madera de árboles plus de Pinus ponderosa
(Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile, 2011)Phenotypic selection generally reduces the variability of both the selected trait and other associated characteristics. Some species show a negative strong relationship between growth traits and wood ... -
Phylogenetic relationships and intraspecific diversity of a North Patagonian Fescue: evidence of differentiation and interspecific introgression at peripheral populations
(2018-03)Peripheral sites usually offer suboptimal conditions for species with wide distributions, where expression of phenotypic variability and potential interspecific hybridization might be enhanced. The Patagonian steppe, the ... -
Phylogeography of two hybridizing southern beeches (Nothofagus spp.) with different adaptive abilities
(Springer, 2011-12-17)In phylogenetically related plant species, hybridization can influence their current genetic structure. Long-lasting hybridization may be related to persistence in shared glacial refugia, where the differential abilities ... -
Physiological and molecular mechanisms underlying the integration of light and temperature cues in Arabidopsis thaliana seeds
(Wiley, 2017-09-23)The relief of dormancy and the promotion of seed germination are of extreme importance for a successful seedling establishment. Although alternating temperatures and light are signals promoting the relief of seed dormancy, ... -
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 ...