Listar Artículos científicos por fecha de publicación
Mostrando ítems 21-40 de 42
-
El tamaño de los individuos y el microambiente afectan el daño por fuego y la supervivencia en árboles del Chaco Serrano
(Asociación Argentina de Ecología, 2019-08)Los incendios afectan de distinta manera a ejemplares de una misma especie leñosa según el tamaño del individuo y las condiciones del microambiente, entre otros factores. Esto tiene implicancias en la estructuración de los ... -
Vegetative propagation and proposal for sustainable management of Valeriana carnosa Sm., a traditional medicinal plant from Patagonia
(Elsevier, 2019-09)Valeriana carnosa is an important medicinal herb in the Patagonian popular medicine. The underground parts of this native species are used for the preparation of various formulations in the traditional health system for ... -
Modeling the potential distribution of Valeriana carnosa Sm. in Argentinean Patagonia: a proposal for conservation and in situ cultivation considering climate change projections
(Elsevier, 2020-01)Over recent years species distribution models have been used for the identification of suitable cultivation zones for native plant species. Valeriana carnosa is one of the most frequently used native plants in Patagonian ... -
Phytophthora austrocedri in Argentina and co-Inhabiting phytophthoras: roles of anthropogenic and abiotic factors in species distribution and diversity
(MDPI, 2020-11-20)This work reports the first survey of Phytophthora diversity in the forests soils of Andean Patagonia. It also discusses the role of anthropogenic impact on Phytophthora distribution inferred from the findings on Phytophthora ... -
The influence of environmental variations on the phenolic compound profiles and antioxidant activity of two medicinal Patagonian valerians (Valeriana carnosa Sm. and V. clarionifolia Phil.)
(AIMS Press, 2020-12-15)Valeriana carnosa and V. clarionifolia stand out as principal elements in the indigenous pharmacopeias of Patagonia; however, their phytochemical characterization is unknown. This study constitutes the starting point of a ... -
Agrupados es la única forma. La experiencia solidaria y autónoma de la cooperativa chacay mamil
(Universidad Católica del Maule, 2020-12-29)Son escasos los antecedentes de estudios sobre cooperativismo agrario en Patagonia, y más aún en la región sur. Es por ello que el presente trabajo se propone analizar la conformación y trayectoria de la cooperativa “Chacay ... -
Grass recruitment constraints along a grazing gradient in Patagonia: N-limitation x adult competition trade-off
(Elsevier, 2021-03-09)We explored the effect of N addition and adult canopy competition on the recruitment of lost preferred species in the Patagonian steppe, where a decelerated N cycling scenario (sensu Ritchie et al., 1998) had been previously ... -
Role of abiotic factors in nothofagus pumilio forest mortality: the sensitivity of ecotones
(Elsevier, 2021-04-24)The world's forests are being affected by a changing climate. Recently, patches of dead trees have been found in forests of the Patagonian endemic species Nothofagus pumilio, which could not be related to insects or ... -
Estructuras agrarias provinciales con datos censales y fuentes alternativas - Parte V
(Instituto Argentino para el Desarrollo Económico, 2021-05-15)La relevancia que tiene en la economía argentina el sector agropecuario en tanto proveedor de divisas vía exportaciones y fijador de precios de bienes salario, requiere contar con buenos diagnósticos para el diseño de ... -
Changes in soil organic matter associated with afforestation affect erosion processes: the case of erodible volcanic soils from Patagonia
(Elsevier, 2021-06-17)Large areas of the Patagonian Andean Region with high potential for planting fast-growing exotic conifers, based on the volcanic nature of its soils, are affected by erosion processes. This study aimed to analyse the effects ... -
Resilient andisols under silvopastoral systems
(Elsevier, 2022-03-20)Livestock can affect physical and chemical soil properties, depending on both stocking rates, and intrinsic soil properties. This study aimed to analyze changes in physicochemical properties in volcanic soils under ... -
How does grazing affect soil water availability in the Patagonian steppe?
(Elsevier, 2022-06-01)In the Patagonian steppe, grazing may or may not reduce soil water availability: it may increase evaporative losses, because it reduces plant cover, but may decrease transpiration losses because it decreases plant biomass. ... -
Effects of dietary supplementation on vegetation cover and its defoliation by sheep in extensive husbandry
(Elsevier, 2022-06-06)Dietary supplementation is one of the most used strategies to reduce the effect of environmental fluctuations in arid and semi-arid environments. We evaluated changes in vegetation and in patterns of animal defoliation as ... -
Trends in ANPP response to temperature in wetland meadows across a subcontinental gradient in Patagonia
(Multidisciplinary Digital Publishing Institute (MDPI), 2022-06-17)Due to ongoing global warming, seasonal patterns of aboveground net primary production (ANPP) may be altered by temperature trends. Of particular interest is the seasonal association between ANPP and temperature at the ... -
Mapping soil organic carbon content in Patagonian forests based on climate, topography and vegetation metrics from satellite imagery
(Multidisciplinary Digital Publishing Institute (MDPI), 2022-11-11)Soil organic carbon (SOC) content supports several ecosystem services. Quantifying SOC requires: (i) accurate C estimates of forest components, and (ii) soil estimates. However, SOC is difficult to measure, so predictive ... -
Cambios en la diversidad y estructura en bosques de nothofagus antarctica en respuesta a distintos disturbios para tres tipos de rodales en Patagonia sur, Argentina = Changes in diversity and structure in nothofagus antarctica forests in response to different disturbances for three stand types in southern Patagonia, Argentina
(Facultad de Ciencias Forestales, Universidad Austral de Chile, 2023-01-24)En la Patagonia sur, el fuego y la herbivoría doméstica son los principales disturbios que controlan la dinámica de los bosques nativos. La respuesta de la diversidad y estructura de las comunidades vegetales frente a los ... -
Suplementación en estepas patagónicas: ¿oportunidad o riesgo ambiental?
(Facultad de Agronomía, Universidad de Buenos Aires, 2023-03-29)El deterioro de los recursos forrajeros de la Patagonia se evidencia en la reducción de la cobertura vegetal, la producción primaria neta aérea (PPNA) y las existencias ovinas, esto último asociado con la caída de la ... -
Nitrogenous and Phosphorus Soil Contents in Tierra del Fuego Forests: Relationships with Soil Organic Carbon, Climate, Vegetation and Landscape Metrics
(MDPI, 2023-04-28)Soil nitrogen (SN) and soil phosphorus (SP) contents support several ecosystem services and define the forest type distribution at local scale in Southern Patagonia. The quantification of nutrients during forest surveys ... -
Trends of aboveground net primary productivity of Patagonian meadows, the omitted ecosystem in desertification studies
(MDPI, 2023-05-08)The United Nations defines desertification as the loss of productivity in arid and semiarid environments. The extended steppes of Patagonia harbor small meadows whose compounded area is comparatively small, but their ... -
Phenotypic plasticity in leaf traits in response to experimental precipitation increase: wettability, foliar water uptake and gas exchange
(Wiley, 2023-07-12)Water availability is one of the factors affecting plant growth and development, especially in arid and semiarid environments. Changes in precipitation due climate change alter water availability to plants impacting on ...