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Mostrando ítems 158-177 de 213
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Quality evaluation of Nothofagus pumilio seeds linked to forest management and climatic events
(Springer Nature, 2024-01-23)Forest ecosystems undergo significant transformations due to harvesting and climate fluctuations, emphasizing the critical role of seeding in natural regeneration and long‑term structural preservation. Climate change further ... -
Radial growth response to long-term thinning strategies in Nothofagus pumilio forests of Tierra del Fuego = Respuesta del crecimiento radial a estrategias de raleo de largo plazo en bosques de Nothofagus pumilio de Tierra del Fuego
(Faculty of Forest Sciences and Natural Resources, Austral University of Chile, 2023)New silvicultural proposals based on long-term trials are needed to develop forest management strategies. Radial growth response was the preferred proxy for managers to define thinning levels and best years for intervention. ... -
Rangeland grazing management in Argentine Patagonia
(IJAB. Friends science publishers, 2020-08-31)Stocking rate adjustment in grazing management is recommended as a management tool to sustain productivity and improve soil health of permanent grassland ecosystems. The aim of this project was to assess the effect of ... -
Raspberries and gooseberries in south Patagonia: Production, fruit quality, morphology and phenology in two environmental conditions
(Elsevier, 2019)Fine fruits as raspberry and gooseberries represent the second production with the largest area cultivated in Santa Cruz province (Argentina), and this activity is usually carried out by family farmers in outdoor conditions. ... -
Recent deforestation drove the spike in Amazonian fires
(IOP Publishing, 2020-12-11)Tropical forests are of global importance even though they only cover around 10% of the Earth's land surface. They store large amounts of carbon and host between one-half and two-thirds of the world's species (Lewis 2006). ... -
REDD+ en Latinoamérica: el caso de Perú
(Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile, 2013)La cuestión de cómo los países en vías de desarrollo como el Perú pueden participar efectivamente en el marco REDD+ (reducción de emisiones de la deforestación y degradación de bosques) de las Naciones Unidas ha sido el ... -
Regeneración por semillas en bosques nativos de Nothofagus antarctica bajo uso silvopastoril en Patagonia Sur, Argentina = Seed regeneration in native forests of Nothofagus antarctica under silvopastoral use in Southern Patagonia, Argentina
(2013-03)Los objetivos de este estudio fueron: i) evaluar la regeneración, desde el punto de vista de su producción y calidad de semillas, así como también de la instalación y supervivencia de plántulas, de dos rodales puros de ... -
Relación entre índices de sequía usando datos meteorológicos y satelitales, en la estepa magallánica seca (Patagonia)
(Facultad de Ciencias Económicas, Universidad de Buenos Aires, 2022-04)Los efectos de la sequía impactan en el sector productivo de las distintas regiones, incidiendo en la vegetación, la disponibilidad de agua y las consecuencias que ello ocasiona, por lo que resulta de interés el estudio ... -
Relating water use to morphology and environment of Nothofagus from the world’s most southern forests
(2014-02)A pronounced environmental gradient dictates the dominance of Nothofagus in the foothills on the eastern side of the Andes Mountains in Patagonia, Argentina. Below 50° southern latitude, open forests of Nothofagus antarctica ... -
Remotely‐sensed primary productivity shows that domestic and native herbivores combined are overgrazing Patagonia
(Wiley; British Ecological Society, 2019-04)1.Carrying capacity is the maximum animal density an area can sustain without deterioration of its resources. Overgrazing has degraded Patagonia, but sheep stocks decreased and gave way to mixed systems with cattle, goats ... -
Rendimiento de distintos sistemas de aprovechamiento en la corta de protección de un bosque de Nothofagus pumilio = Stocking and yield potential of three different logging systems in a shelterwood cut of Nothofagus pumilio forest
(2017)Los bosques de Nothofagus pumilio constituyen la masa forestal de mayor importancia económica del sur de Argentina y Chile. Las existencias de volumen total y el rendimiento volumétrico varían de acuerdo a la calidad de ... -
Reply to: Data do not support large-scale oligotrophication of terrestrial ecosystems.
(Springer Nature, 2019-07-22)Hiltbrunner et al. apply a reductionist approach to argue that the evidence for widespread terrestrial oligotrophication2 should be replaced with a two-factor explanation (growth dilution and depositional signatures) that ... -
Respuesta de la vegetación al manejo por corte en fajas en un arbustal de Mulguraea tridens en Patagonia sur
(2016-12)En Santa Cruz, aproximadamente 2.83 millones de hectáreas conforman el matorral de mata negra, una estepa arbustiva dominada por el arbusto Mulguraea tridens, donde la ganadería ovina extensiva es la principal actividad ... -
Restauración por recolonización de especies nativas en pasturas sembradas en ambientes semiáridos en Patagonia
(Facultad de Agronomía, Universidad Nacional de La Pampa, 2023-06-05)En Patagonia austral el sobrepastoreo provoca cambios irreversibles en los pastizales. La sucesión secundaria en pasturas comerciales podría promover parcialmente la recuperación de especies nativas. Se estudiaron lotes ... -
Retention Forestry in Southern Patagonia: Multiple Environmental Impacts and Their Temporal Trends
(Commonwealth Forestry Association, 2015-06)Harvesting with variable retention (VR) applied in Nothofagus forests combines two types of retention: patches of original forest (aggregates) and single isolated homogeneously distributed trees (dispersed). This study ... -
Seed fall and leaf litter relationships in Nothofagus pumilio forests: changes according to retention levels and years after harvesting
(Springer, 2023-04)Seed fall and leaf litter influence forest regeneration, nutrient cycling, and other key ecological processes closely related to forest management. In Patagonian forests, variation of both managed and unmanaged forests ... -
Sensitivity of global soil carbon stocks to combined nutrient enrichment
(Wiley, 2019-06)Soil stores approximately twice as much carbon as the atmosphere and fluctuations in the size of the soil carbon pool directly influence climate conditions. We used the Nutrient Network global change experiment to examine ... -
Sheep faeces decomposition and nutrient release across an environmental gradient in Southern Patagonia
(2017-04)In Southern Patagonia, most of the land ranging from the mountains to the sea in contrasting environmental conditions is devoted to extensive sheep farming. Existing estimations indicate that in ecosystems under livestock ... -
Silvopastoral use of Nothofagus antarctica forests in Patagonia: impact on soil microorganisms
(Springer, 2022-09-06)Soil microorganisms contribute to soil carbon storage, soil respiration and nutrient cycling. In south Patagonia, there are scarce studies on carbon (C) and nitrogen (N) in soil microbial biomass (MB). The aim of this work ... -
Silvopastoral use of Nothofagus antarctica in Southern Patagonian forests, influence over net nitrogen soil mineralization
(2013-04)In most temperate forest, nitrogen (N) is considered a limiting factor. This becomes important in extreme environments, as Nothofagus antarctica forests, where the antecedents are scarce. Thinning practices in N. antarctica ...