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Mostrando ítems 505-524 de 1110
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Genetic diversity and patterns of population structure in Creole goats from the Americas
(Wiley, 2017)Biodiversity studies are more efficient when large numbers of breeds belonging to several countries are involved, as they allow for an in-depth analysis of the within- and between-breed components of genetic diversity. A ... -
Genetic diversity and population structure in Nothofagus pumilio, a foundation species of Patagonian forests: defining priority conservation areas and management
(Springer Nature, 2020-11)Patagonian forests are the southernmost temperate forests in the world, and Nothofagus pumilio is one of their most ecologically important tree species (i.e., a foundation species). It presents great adaptability and a ... -
Genetic progress and economic benefit of community-based breeding programs for sheep out- and upscaling options in Ethiopia
(Elsevier, 2019-08)In this study, expected genetic progress and economic benefits from implementing three community-based breeding programs for sheep (CBBP) out- and upscaling strategies were investigated. Strategy 1 is to replicate average ... -
Genetic Resources: The Base Material for Managing Nature
(Elsevier, 2021)Genetic resources from any biological organism-complete genomes, genes, or even portions of genes that have actual or potential relevance to humans—are a provisioning ecosystem service. They are essential to ensure the ... -
Genetic variation for tolerance to high temperatures in a population of Drosophila melanogaster
(John Wiley & Sons Ltd, 2018-10)The range of thermal tolerance is one of the main factors influencing the geographic distribution of species. Climate change projections predict increases in average and extreme temperatures over the coming decades; hence, ... -
Genetic variation in seedling water-use efficiency of Patagonian Cypress populations from contrasting precipitation regimes assessed through carbon isotope discrimination
(Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), (España), 2012-07-20)Water-use efficiency (WUE) is a physiological parameter that plays a significant role in the evolutionary dynamics of many forest tree species. It can be estimated indirectly through carbon isotope discrimination (Δ). In ... -
Genetic variation of leaf pigment content in a southern beech
(Springer, 2022-07)Leaf pigment concentration varied among populations, watersheds and between two consecutive years. The highest concentration of pigments was found in 2018, but both years showed the same trend among populations. Physiological, ... -
Genetic variation of xylem hydraulic properties shows that wood density is involved in adaptation to drought in Douglas-fir (Pseudotsuga menziesii (Mirb.))
(Springer, 2011-05)Relationships between wood density and hydraulic efficiency and safety (hydraulic specific conductivity and vulnerability to cavitation, respectively) could clarify the physiological process explaining the impact of density ... -
Genetic versus environmental contributions to variation in seedling resprouting in Nothofagus obliqua
(Springer, 2015-04)Resprouting is an almost universal functional trait in temperate angiosperms and confers persistence at an individual level after the loss of above-ground biomass. The importance of genetic versus environmental sources of ... -
Genomic responses to climate: Understanding local adaptation in the Andean tree species Nothofagus pumilio and implications for a changing world
(Wiley, 2024-03)Nothofagus pumilio is a foundation tree species that inhabits a 2000-km-long range in the southern Andes, a region with two perpendicular environmental gradients: temperature and photoperiod (North–South), and precipitation ... -
Germination response to water availability in populations of Festuca pallescens along a Patagonian rainfall gradient based on hydrotime model parameters
(Springer Nature, 2021-05)Sensitivity to water availability is a key physiological trait for grassland species located in arid and semiarid environments, where successful germination is closely related to rainfall dynamics. Festuca pallescens ... -
Gestión de riesgos de desastres agropecuarios : (Argentina, 1975-2020)
(Teseo Press Design, 2020)La gestión de riesgos de desastres agropecuarios concierne la formulación, la adopción y la aplicación de políticas, acciones y estrategias de reducción de riesgos de desastres existentes y nuevos, así como de sus efectos. ... -
Global Invader Impact Network (GIIN): toward standardized evaluation of the ecological impacts of invasive plants
(2015-07)Terrestrial invasive plants are a global problem and are becoming ubiquitous components of most ecosystems. They are implicated in altering disturbance regimes, reducing biodiversity, and changing ecosystem function, ... -
Gobernanza territorial y acciones de desarrollo local en el Valle de Río Chico (Río Chico, Argentina). (2004-2014)
(Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata, 2016-11)El territorio de estudio fue el valle de Río Chico. Ubicado en Suroeste de la Región Sur de la Provincia de Río Negro. Por medio de la revisión teórica y la sistematización de las experiencias de intervención como agente ... -
Going to scale—From community-based to population-wide genetic improvement and commercialized sheep meat supply in Ethiopia
(Frontiers Media, 2023-03)Community-based breeding programs (CBBPs) have shown, at pilot scale, to be effective and beneficial in achieving genetic progress and in improving livelihoods of smallholder communities. In Ethiopia 134 sheep and goat ... -
“Gorgojo de la corteza del pino”. Pissodes castaneus
(EEA Bariloche, 2018-05)El "gorgojo de la corteza del pino" es un insecto que pertenece al orden Coleoptera (escarabajos), familia Curculionidae, y su nombre científico es Pissodes castaneus. Una característica propia de los escarabajos son las ... -
Grazing and ecosystem service delivery in global drylands
(American Association for the Advancement of Science, 2022-11-25)Grazing represents the most extensive use of land worldwide. Yet its impacts on ecosystem services remain uncertain because pervasive interactions between grazing pressure, climate, soil properties, and biodiversity may ... -
Grazing intensity levels influence C reservoirs of wet and mesic meadows along a precipitation gradient in Northern Patagonia
(Springer, 2015-06)Wet meadows are important ecosystems for forage production and as carbon reservoirs in semi-arid areas. In Patagonia, Argentina, large areas of wet meadows have been classified as overgrazed by livestock. The objective of ... -
Growth curve of early-weaned Hereford calves in a semidesert temperate zone (Patagonia, Argentina)
(Elsevier, 2022-05)In semi desert environments, prone to droughts, beef cow performance can be improved by early weaning. This study aimed to evaluate the growth curve of early weaned calves in a semidesert temperate area such as Patagonia, ... -
Growth response of Pinus contorta to the synergy of stress factors: successive extreme drought events and a population outbreak of Sirex noctilio in NW Patagonia
(Springer, 2022-02)The synergy of biotic and abiotic stress factors influences the response in growth, resistance, recovery and resilience of forest systems. This study used a dendrochronological approach to analyze the annual radial increase ...