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Mostrando ítems 472-491 de 567
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Sex-related difference in susceptibility to cypress mortality in Austrocedrus chilensis from Northwestern Patagonia (Argentina) = Susceptibilidad diferencial al mal del ciprés entre sexos de Austrocedrus chilensis en la Patagonia (Argentina)
(Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile, 2012)Female and male individuals of dioecious species have different reproductive functions and sex-related differences have been reported in growth rate, age at maturity, size, spatial distribution and physiological responses ... -
Shaping forces modelling genetic variation patterns in the naturally fragmented forests of a South-American Beech
(Elsevier, 2009-10)Fourteen natural populations of the South-American Beech Nothofagus obliqua at the Eastern naturally fragmented area of its distribution range were subjected to genetic analysis using genetic markers. The genetic ... -
Short-term energy supplementation before lambing improves maternal behaviour, udder volume, colostrum viscosity and lamb birthweight in ewes under extensive grazing
(Elsevier, 2023-02)The aim of the present experiment was to evaluate the effect of short-term energy supplementation before lambing on maternal and lamb behaviour and colostrum production in a large-scale trial in Merino sheep under extensive ... -
Should tree invasions be used in treeless ecosystems to mitigate climate change?
(The Ecological Society of America, 2021)Intentionally allowing or promoting invasion by non-native trees into areas characterized by treeless vegetation could contribute to climate-change mitigation by increasing carbon (C) sequestration. In some areas of the ... -
Sirex noctilio flight behavior : towards improving current monitoring techniques
(2014-08)Sirex noctilio Fabricius (Hymenoptera: Siricidae), una avispa invasora de España y el Norte de África, tiene una presencia global en expansión en los bosques de pino. A pesar de que sus poblaciones se gestionan en la mayoría ... -
Sisal wool skin disease in Merino sheep in the Argentine Patagonia region: Identification and molecular diagnosis of Corynebacterium bovis from skin lesions
(Wiley, 2022-09)Background: Sisal wool condition is a skin disease affecting Merino sheep in the Argentine Patagonia region. Corynebacterium spp. isolates have previously been isolated from skin swabs from lesions, while specific ... -
A social-ecological network analysis of Argentinean Andes transhumant pastoralism
(2016)Muchas regiones montañosas en todo el mundo se caracterizan por entornos duros, infraestructura escasa y contrastes extremos entre montañas y planicies y llanuras vecinas. La transhumancia es una adaptación social para ... -
Socio-technical networks modulate on-farm technological innovations in wool production of North Patagonia, Argentina
(Elsevier, 2021-03)Socio-technical networks in the agricultural sector are complex and are key in technological innovation processes. Some relevant on-farm management decisions depend on a negotiation process involving different factors, ... -
Socio‑cognitive constraints and opportunities for sustainable intensification in South Asia: insights from fuzzy cognitive mapping in coastal Bangladesh
(Springer, 2021-07)Appreciating and dealing with the plurality of farmers’ perceptions and their contextual knowledge and perspectives of the functioning and performance of their agroecosystems— in other words, their ‘mental models’—is central ... -
Soil bacterial biodiversity characterization by flow cytometry: The bottleneck of cell extraction from soil
(Wiley, 2022-07)The importance of soil biodiversity is increasingly recognized in agriculture and natural resource research and development. Yet, traditional soil biodiversity assessments are costly and time-consuming, limiting the extent ... -
Soil fungal abundance and plant functional traits drive fertile island formation in global drylands
(2018)Dryland vegetation is characterized by discrete plant patches that accumulate and capture soil resources under their canopies. These “fertile islands” are major drivers of dryland ecosystem structure and functioning, yet ... -
Soil variability and crop yield gaps in two village landscapes of Burkina Faso
(Springer, 2016-07)Low crop yields in the savannah zones of West Africa are commonly attributed to rainfall deficits and poor soil fertility. In this study, an assessment was made on how the position of fields belonging to different farm ... -
Sorption characteristics of rosehip, apple and tomato pulp formulations as determined by gravimetric and hygrometric methods
(Elsevier, 2013-06)The sorption characteristics of three formulations based on rosehip, apple and tomato pulp, added with saccharides, and aimed at preparing fruit leathers, were studied. Desorption isotherms were determined at 20 and 40 °C, ... -
Spatial density‐dependent parasitism and specificity in the robber fly Mallophora ruficauda (Diptera: Asilidae)
(Wiley, 2010-02)The density‐dependence in parasitism by the robber fly Mallophora ruficauda (Diptera: Asilidae) on scarab beetle larvae (Coleoptera: Scarabaeidae) populations was studied in the present research. Mallophora ruficauda is a ... -
Spatial distribution of volcanic ash deposits of 2011 Puyehue-Cordón Caulle eruption in Patagonia as measured by a perturbation in NDVI temporal dynamics
(2018-03)Volcanic ash fallout is a recurrent environmental disturbance in forests, arid and semi-arid rangelands of Patagonia, South America. The ash deposits over large areas are responsible for several impacts on ecological ... -
Spatial dynamics of a Sirex noctilio woodwasp population within a pine plantation in Patagonia, Argentina
(Wiley, 2007-12)The woodwasp Sirex noctilio F. (Hymenoptera: Siricidae) is probably the most important pest of pine tree plantations of the southern hemisphere. We studied the spatial arrangement of an endemic population of the woodwasp ... -
Spatial pattern of attacks of the invasive woodwasp Sirex noctilio, at landscape and Stand Scale
(2015-05-18)Invasive insect pests are responsible for important damage to native and plantation forests, when population outbreaks occur. Understanding the spatial pattern of attacks by forest pest populations is essential to improve ... -
Spatiotemporal outbreak dynamics of bark and wood-boring insects
(Elsevier, 2023-02)Bark and wood-boring insects (BWI) can cause important disturbances in forest ecosystems, and their impact depends on their spatiotemporal dynamics. Populations are usually at stable, low densities but can be disrupted by ... -
Spontaneous outbreak of Astragalus pehuenches (Fabaceae) poisoning in cattle in Argentina
(Elsevier, 2018-11)This is the first report of a spontaneous outbreak of Astragalus pehuenches poisoning on a farm in Argentine Patagonia, where 63 out of 70 cattle died. The main clinical signs of affected animals were ataxia, balance loss ... -
Stand density and drought interaction on water relations of Nothofagus antarctica : contribution of forest management to climate change adaptability
(2011-12)Nothofagus antarctica is the most representative species of the native mixed forest occupying ecotone areas between forests and steppe in NW Patagonia, South-America. In this type of environment, vulnerability to climate ...