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Mostrando ítems 1967-1986 de 2184
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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 ... -
Stand development stages and recruitment patterns influence fine-scale spatial genetic structure in two Patagonian Nothofagus species
(Springer, 2022-05)Key message: Nothofagus alpina (Poepp. et Endl.) Oerst. and Nothofagus obliqua (Mirb.) Oerst forests have strong fine-scale spatial genetic structures. The intensity of genetic structure patterns differed according to ... -
Staying close: short local dispersal distances on a managed forest of two Patagonian Nothofagus species
(Oxford University Press, 2020-05)Understanding the impact of management on the dispersal potential of forest tree species is pivotal in the context of global change, given the implications of gene flow on species evolution. We aimed to determine the effect ... -
Stem canker caused by Phomopsis spp. Induces changes in polyamine levels and chlorophyll fluorescence parameters in pecan leaves
(Elsevier, 2021-09)Pecan plants are attacked by the fungus Phomopsis spp. that causes stem canker, a serious and emerging disease in commercial orchards. Stem canker, which has been reported in several countries, negatively affects tree ... -
Strains in Sustainability Debates: Traditional Ecological Knowledge and Western Science through the Lens of Extension Agents in a Pastoral Region
(Wiley Online Library, 2020-03)Those involved in sustainability debates on developmental pathways concur in the synergistic potential of integrating traditional ecological knowledge (TEK) and Western scientific approaches. Transhumant pastoralism is a ... -
Strategies Steering Intensification Pathways of Farmers in Central Malawi
(Springer, 2023-06)Smallholder farmers face many challenges to improve their livelihoods and food security. Intensification of agricultural production can help to achieve these goals. Yet farmers are highly heterogenous in their strategies ... -
Structural–functional approach to identify post-disturbance recovery indicators in forests from northwestern Patagonia: a tool to prevent state transitions
(Elsevier, 2015-05)The disruption of the natural post-disturbance recovery process, either by changes in disturbance regime or by another disturbance, can trigger transitions to alternative degraded states. In a scenario of high disturbance ... -
Structure and composition of a thrips community in the Chihuahua Desert, New Mexico, U.S.
(Florida Entomological Society, 2012-03)We examined plant used versus plant availability by a thysanopteran community on 13 woody and perennial native plants in the Chihuahua Desert. Individual plants were sampled with sticky-traps on 8 dates from May 1997 to ... -
Studying the post-fire performance of tussock grasses in Patagonia: Survival, biomass production and early competition
(Elsevier, 2011-11)Patagonia grasslands are subjected to two main disturbances, fire and grazing, but little information is available about its effects on vegetation. We studied post-fire survival and resprouting ability of two dominant grass ... -
Substrates Preference for Pupation on Sawfly Notofenusa surosa (Hymenoptera: Tenthredinidae)
(Springer, 2015-05)The choices made by insects at different stages of their life cycle are critical for the individual and progeny success. In the case of leaf-miners, during larval development they are not able to make choices until the ... -
El suelo como soporte y sustrato
(Ediciones INTA, 2021)La selección de especies frutales a plantar en un huerto se basa, en primer lugar, en las características climáticas de la región y/o las posibilidades tecnológicas que logren contrarrestar ciertas adversidades, y luego ... -
Los suelos del Alto Valle : compendio de estudios previos y propuestas de manejo a partir de su análisis
(Ediciones INTA, EEA Alto Valle, 2023)Diversos estudios se han llevado a cabo sobre los suelos del Alto Valle por parte de distintas instituciones, en momentos y escalas diferentes, respondiendo a finalidades específicas. Los diversos suelos del Alto Valle del ... -
Sugar responsiveness could determine foraging patterns in yellowjackets
(Nature, 2023-11)Sympatric-related species often exhibit resource partitioning. This can occur through diferent mechanisms, such as behavioral, morphological, and sensory variations, leading to qualitative, temporal, or spatial diferences ... -
Sujetos sociales agrarios y, desigualdades en el uso y acceso al agua de riego. El caso de en la Colonia Juliá y Echarren, Río Colorado – Río Negro
(Facultad Latinoamericana de Ciencias Sociales (FLACSO) Sede Argentina, 2023-06)En el norte de la Patagonia Argentina, predomina el clima árido. Las escasas precipitaciones hacen que el riego sea indispensable para la agricultura. Desde hace unos 100 años, en los valles de la Provincia de Río Negro, ... -
Superficie cubierta con mallas doble propósito en la Patagonia norte
(EEA Alto Valle, INTA, 2022-06)Estimación de la superficie cubierta con mallas para la prevención de adversidades climáticas, a través de imágenes satelitales. En los valles de la Norpatagonia se determinó un aumento en la ocurrencia de los eventos de ...