Títulos
Mostrando ítems 21-40 de 42
-
Impact of ponderosa pine afforestations on soil organic matter (SOM) in semiarid steppes of western Patagonia, Argentina
(2017-10)The western steppe of Patagonia, Argentina, is being afforested with conifers since long ago. However, the effects of this land-use change on some soil parameters are still unknown. We determined soil organic matter (SOM) ... -
Impacto de la redistribución de agua en áreas de estepa: estudio de caso en un arroyo temporario del NO de Chubut = Water redistribution effect in steppe areas: a study case in a temporary stream of the Chubut NW
(Facultad de Agronomía, Universidad Nacional de La Pampa, 2013)Con el objetivo de evaluar el impacto en la vegetación y el suelo de una obra de redistribución de agua en área de estepa, se desarrolló durante 2010 y 2011 un ensayo en el área ecológica de Sierras y Mesetas Occidentales ... -
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 ... -
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 ... -
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 ... -
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 ... -
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 ... -
Primer aislamiento de Herpes Virus Bovino tipo 1 en bovinos de Patagonia, Argentina
(Sociedad de Medicina Veterinaria, 2017-07)Se describe un brote IBR con aislamiento de Herpes Virus Bovino tipo 1 (BoHV1) en la Patagonia argentina. Durante los meses de junio-julio de 2013 tuvo lugar un brote de rinitis y conjutivitis en un lote de terneros ... -
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 ...