Temas
Mostrando ítems 1-15 de 15
-
Anchored in 'average thinking' in studies of arid rangeland dynamics - The need for a step forward from traditional measures of variability
(2015-02)There is a wide consensus that arid and semi-arid environments are highly variable in space and time. The most frequent approaches to describe and analyze arid and semi-arid rangelands are based on the usage of averages ... -
Archetypal temporal dynamics of arid and semi-arid rangelands
(Elsevier, 2021-03)The way in which temporal dynamics structure ecological systems under the influence of a changing environment has long interested ecologists. Tackling the hierarchical structure of complex temporal patterns is a necessary ... -
Assessing the magnitude of impact of volcanic ash deposits on Merino wool production and fibre traits in the context of a drought in North-west Patagonia, Argentina
(CSIRO Publishing, 2014-02)Environmental variability is a key feature of arid and semiarid rangelands worldwide. Drought is one of the main sources of variation in most extensive livestock production systems in arid environments, with biophysical ... -
Bases para una ley de pastizales de regiones áridas y semiáridas de la Argentina
(Asociación Argentina de Ecología, 2021-08)Los pastizales proveen múltiples servicios ecosistémicos de alto valor para la sociedad, tanto local como globalmente, pero se encuentran amenazados por procesos de degradación, el impacto del cambio climático y modificaciones ... -
Comportamiento hidrológico de un paisaje con diferentes estados del pastizal en la Patagonia árida
(Asociación Argentina de la Ciencia del Suelo, 2023-12)En Patagonia árida, la forma de uso de la tierra más extendida es el pastoreo por ganado doméstico. A pesar de ello, la región carece de un entendimiento acabado sobre la generación de los flujos de escorrentía en áreas ... -
Convergence between satellite information and farmers’ perception of drought in rangelands of North-West Patagonia, Argentina
(Elsevier, 2020-09)Drought is a complex natural hazard with social and environmental implications. Satellite information is increasingly used to support decision-makers in preventing or coping with the negative impacts of drought. The ... -
Evaluación de pastizales patagónicos con imágenes de satélites y de vehículos aéreos no tripulados
(Asociación Argentina de Ecología, 2019-12)La evaluación de pastizales en regiones áridas y semiáridas es una herramienta clave tanto para planificar el manejo ganadero como para realizar diagnósticos ambientales. Si bien hay un consenso sobre la utilidad de dicha ... -
Germination response to water availability in populations of Festuca pallescens along a Patagonian rainfall gradient based on hydrotime model parameters
(Springer Nature, 2021-05)Sensitivity to water availability is a key physiological trait for grassland species located in arid and semiarid environments, where successful germination is closely related to rainfall dynamics. Festuca pallescens ... -
Local adaptation along a sharp rainfall gradient occurs in a native Patagonian grass, Festuca pallescens, regardless of extensive gene flow
(Elsevier, 2020-03)Increasing global aridity combined with changing environmental conditions might cause irreparable alterations in arid and semiarid ecosystems. Knowledge of within-species genetic diversity and adaptive responses, especially ... -
Plant species richness and shrub cover attenuate drought effects on ecosystem functioning across Patagonian rangelands
(2014-10-22)Drought is an increasingly common phenomenon in drylands as a consequence of climate change. We used 311 sites across a broad range of environmental conditions in Patagonian rangelands to evaluate how drought severity and ... -
Relationship between NDVI of Patches and Cover Area of Grasses, Shrubs and Bare Soil Components of a Semi-Arid Steppe from North-West Patagonia, Argentina
(MDPI, 2023-02)Distinguishing the contributions of different vegetation cover such as shrubs and grasses components into the primary production in arid and semi-arid rangelands is a key step to understanding changes at a landscape scale. ... -
Rhythm of change of trend-cycles of vegetation dynamics as an early warning indicator for land management
(Elsevier, 2021-07)The use of time series of vegetation indices obtained from satellites has become a highly relevant source of data in studies of land degradation assessment and monitoring. However, information about future vegetation ... -
Seasonal diet of Lama guanicoe (Camelidae: Artiodactyla) in a heterogeneous landscape of South Patagonia = Dieta estacional de Lama guanicoe (Camelidae: Artiodactyla) en un paisaje heterogéneo de Patagonia Sur
(Universidad Austral de Chile, Facultad de Ciencias Forestales, 2013)Large diversity of habitat types, plant species assemblages, and silvopastoral activities in Nothofagus spp. forests condition the food availability for native herbivores. This work evaluates the seasonal diet of Lama ... -
The application of ecologically intensive principles to the systemic redesign of livestock farms on native grasslands: A case of co-innovation in Rocha, Uruguay
(Elsevier, 2021-06)CONTEXT: Family-run cow-calf farms based on native grasslands exhibit low economic and social sustainability, as reflected in low family incomes and high workloads. Experimental results have shown that pasture–herd interaction ... -
What do domestic livestock eat in northern Patagonian rangelands?
(CSIRO Publishing, 2013-02)The Patagonian rangelands are dominated by steppes interspersed with meadows (locally called mallines), which are small but permanently humid areas, characterised by high spring–summer quality and productivity of grasses ...