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Mostrando ítems 17342-17361 de 17418
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Why are Chloris gayana leaves shorter in salt-affected plants? Analyses in the elongation zone
(Society for Experimental Biology, 2006-11)Reduced hydraulic conductance calculated from growth data was suggested to be the main reason for reduced leaf expansion in salt-stressed Chloris gayana (Rhodes grass). In this work, xylem vessel cross-sections and wall ... -
Why biodiversity increases after variable retention harvesting: A meta-analysis for southern Patagonian forests
(2016-06-01)Effects of forest harvesting on biodiversity can be varied and complex to understand. We provide a meta-analysis of 553 studies plants, insects and birds to identify the general responses to Variable Retention harvesting ... -
Why do Pinus species have different growth dominance patterns than Eucalyptus species? A hypothesis based on differential physiological plasticity
(Elsevier, 2011-03-15)It has been observed that Eucalyptus stands show high growth dominance levels while Pinus stands show null or low growth dominance levels. We hypothesized that this differential behaviour is linked to a higher degree of ... -
Widespread and major losses in multiple ecosystem services as a result of agricultural expansion in the Argentine Chaco
(Wiley, 2020-09-09)1.Where agriculture expands into tropical and subtropical forests, social–ecological impacts are typically strong. However, where and how frontier development impacts on ecosystem functioning and services is often unclear, ... -
Wild and cultivated potato species diversity, taxonomy, and conservation
(Springer, 2021-09-22)In the present chapter, we summarize the knowledge of wild and cultivated potato species, diversity, a taxonomic update including group concept classification and description, species valid names, and a complete synonymy, ... -
Wild halophytic species as forage sources: key aspects for plant breeding
(Wiley; British Grassland Society; European Grassland Federation, 2019-02-20)The use of wild halophytic species as forage resources in saline environments has gained increasing attention. Argentina ranks third in area of saline soils in the world, with a third of its territory showing various degrees ... -
Wild pigs (Sus scrofa) population as reservoirs for deleterious mutations in the RYR1 gene associated with Porcine Stress Syndrome
(Elsevier, 2020-12)Porcine Stress Syndrome (PSS) is a disorder codified by the ryanodine receptor 1 gene (RYR1) and affects both animal welfare and the quality of the meat product. As a consequence, individuals with this syndrome generate ... -
Wild potato genetic reserves in protected areas: prospection notes from Los Cardones National Park, Salta, Argentina
(Facultad de Ciencias Agrarias, Universidad Nacional de Cuyo, 2019-12-09)Wild potato species (WPS) are vital genetic resources to improve the productivity and sustainability of the third most important food crop worldwide. Although in situ conservation of this germplasm has been considered the ... -
Willingness to pay for quality attributes of fresh beef
(IAAE, 2015-08-11)In recent decades, the demand for food worldwide has undergone significant changes that have highlighted the issue of the quality and safety of food consumed. After international food crisis associated with consumption of ... -
Willow seedlings from photooxidized seeds accelerate cotyledon death and anticipate first leaf emergence: a histological and biochemical study following germination
(Wiley, 2013-10)In willow seeds, photooxidative damage is mainly restricted to the outer cotyledonary tissues, significantly reducing normal germination. Here we analyzed the damage generated in cotyledonary tissues and investigated whether ... -
Willows in Patagonia: the challenge of understanding and controlling invasions
(Universidad Autónoma del Estado de México (UAEMEX), 2021)Exotic willows are widely spread throughout Patagonia due to their vegetative multiplication, rapid growth, and ease for establishing themselves in environments with fluctuating hydric regimes, so they most commonly overgrow ... -
Wind disrupts trail pheromone communication in the leaf-cutting ant Acromyrmex lobicornis
(Elsevier, 2022-10)Although wind is a ubiquitous component of ecological systems and might affect pheromone communication, its effects have not been studied in depth. To test whether wind impacts trail pheromone behaviour, we studied the ... -
A wind-tunnel study on saltation and PM10 emission from agricultural soils
(Elsevier, 2016-09)PM10 emission depends on the texture and the aggregation state of a soil. A decisive but less studied factor is the saltation fraction of the soil (fraction between 100 and 500 μm). Six soils of contrasting textures were ... -
Winter cover crops in soybean monoculture: effects on soil organic carbon and its fractions
(2016-08)The current agricultural production systems in the Pampas Region have been significantly simplified by cultivating large land areas under no tillage (NT), where soybean is the predominant crop. These systems with long ... -
Winter injury to grapevine secondary phloem and cambium impairs budbreak, cambium activity, and yield formation
(Springer, 2019-11-11)Vitis vinifera is a species of temperate origin that reactivates the dormant secondary phloem from the previous year at the resumption of growth in spring. Following harsh winters, grapevines may display a set of symptoms ... -
Winter population size estimations of three migratory sheldgeese in the southern pampas, Argentina
(2018-03)Sheldgeese [Upland Goose (Chloephaga picta picta), Ashy-headed Goose (C. poliocephala) and Ruddyheaded Goose (C. rubidiceps)] have similar migratory patterns, breeding in Patagonia (Argentina and Chile) and wintering mainly ... -
Wireless wine: estimación de rendimiento y ubicación de sensores para la predicción de heladas en los viñedos
(Universidad Nacional de la Patagonia Austral, 2020-06)Los productores de viñedos han estado reuniendo información operacional significativa sobre sus campos, y las fincas más avanzadas pueden producir varios años de datos sobre cómo se ha plantado, regado, fertilizado y cómo ... -
Within-population variability in architectural traits and suitability to forestry conditions in Nothofagus nervosa (= N. alpina; Nothofagaceae)
(2013-07)Context: There is evidence that Nothofagus nervosa (= N. alpina) is suitable for timber production in temperate regions due to its wood quality and fast growth. However, high intra-specific variability in the architectural ... -
Wolbachia pipientis associated with tephritid fruit fly pests: from basic research to applications
(Frontiers Media, 2020-06)Members of the true fruit flies (family Tephritidae) are among the most serious agricultural pests worldwide, whose control and management demands large and costly international efforts. The need for cost-effective and ... -
Wood anatomy, fire wounds and dendrochronological potential of Prosopis pugionata Burkart (Fabaceae) in arid Argentine Chaco
(International Association of Wood Anatomists, 2021-02)Prosopis pugionata (Fabaceae) is a halophyte tree species that grows exclusively in Argentina’s arid environments, whose woodlands are mainly affected by fires and overgrazing. Here, we describe the wood anatomy and fire ...