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Mostrando ítems 29-42 de 42
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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 ... -
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 ... -
Soil erodibility and quality of volcanic soils as affected by pine plantations in degraded rangelands of NW Patagonia
(2016-08)NW Patagonia in Argentina has high potential for planting fast-growing exotic conifers, supported by its volcanic soils. Nonetheless, many aspects related to the effects of pine plantations on soil are still unknown. We ... -
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 ... -
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 ... -
The contribution of fire damage to restricting high mountain Polylepis australis forests to ravines: Insights from an un-replicated comparison
(2015-04)High mountain forests are often restricted to ravines and much debate has existed on the explanations of this distribution, with arguments ranging from abiotic site conditions being more favorable in ravines to there being ... -
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 ... -
Tree–grass interactions for N in Nothofagus antarctica silvopastoral systems: evidence of facilitation from trees to underneath grasses
(Springer, 2014-10)Nothofagus antarctica forests in south Patagonia are usually used as silvopastoral systems but how grasses and trees compete for specific resources, such as nitrogen in these systems is unknown. To understand interactions ... -
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 ... -
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 ... -
Valeriana gaimanensis (Valerianaceae nom. conserv.), a New Species from the Patagonian Semi-Arid Desert, Argentina
(American Society of Plant Taxonomists, 2016-02)Valeriana gaimanensis, a new species from Argentinean Patagonia, is described and illustrated. The new species belongs to the subgenus Valeriana and is apparently endemic to the Extra-Andean Patagonia region, where it grows ... -
Variabilidad germinativa en semillas de diferentes poblaciones de cuatro especies de gramíneas nativas de patagonia : un estudio de caso en el noroeste de Chubut
(2016)Germinative variability of seeds from different populations of four species of native grasses from Patagonia: a case study in northwestern Chubut. In this study, we analyzed the quality and germination behavior of seeds ... -
Variación altitudinal de caracteres fenológicos y crecimiento inicial en condiciones controladas entre poblaciones de Nothofagus pumilio provenientes del Centro-Oeste de Chubut, Argentina
(Facultad de Ciencias Forestales y Recursos Naturales de la Universidad Austral de Chile, 2019-02-19)Se estudió la diferenciación altitudinal de seis poblaciones naturales argentinas de lenga (Nothofagus pumilio) del Centro Oeste de la Provincia de Chubut (42° 50´ S) distribuidas en un rango altitudinal de 500 m (1.000 ... -
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 ...