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Mostrando ítems 116-135 de 213
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Mineral elements in grasses growing in contrasting environmental conditions in southern Patagonia
(2016)The importance of grasses and graminoids for sheep nutrition in Argentinean Patagonia is widely recognized. Focusing on sheep nutrition, we assessed the concentration of mineral elements in grasses growing in three ecological ... -
Mineral fertilization impacts microbial activity and endophytic fungi but not microbial biomass in semiarid grasslands
(Elsevier, 2024-01)Applications of mineral fertilizer to grasslands have become more frequent in recent decades to increase forage production. However, the impacts of mineral fertilizer on the soil microbiome is poorly understood in cold ... -
Mistletoes and epiphytic lichens contribute to litter input in Nothofagus antarctica forests
(Elsevier, 2015-10)Litter input is one of the key components that define nutrient cycling in forests and the majority of studies only consider the tree components of litterfall. However, epiphytic species can play a crucial role in litter ... -
Modeling of potential habitat suitability of Hippocamelus bisulcus: effectiveness of a protected areas network in Southern Patagonia
(Springer, 2017)Introduction Huemul (Hippocamelus bisulcus Molina) is the most threatened flag species of Southern Patagonia, where conservation efforts were not effective to avoid the retraction of its distribution area. Habitat quality ... -
Modeling soil nitrogen content in South Patagonia across a climate gradient, vegetation type, and grazing
(MDPI, 2019-05)Soil total nitrogen (N) stock in rangelands, shrublands, and forests support key ecological functions such as the capacity of the land to sustain plant and animal productivity and ecosystem services. The objective of this ... -
Modelling soil carbon content in south Patagonia and evaluating changes according to climate, vegetation, desertification and grazing
(2018)In Southern Patagonia, a long-term monitoring network has been established to assess bio-indicators as an early warning of environmental changes due to climate change and human activities. Soil organic carbon (SOC) content ... -
Modelo de simulación de producción de materia seca y concentración de proteína bruta de gramíneas creciendo en bosques de Nothofagus antarctica (G. Forster) Oerst. bajo uso silvopastoril
(2014)Nothofagus antarctica (ñire) ocupa una importante fracción de los bosques de la Patagonia Austral y suele ser usado en sistemas silvopastoriles. Se carece, sin embargo de información que permita hacer un uso óptimo y ... -
Modelos forzados y no forzados para el cálculo del índice de sitio en bosques de Nothofagus antarctica en Patagonia Sur = Constrained and non-constrained models for site index estimation in Nothofagus antarcticaforests of South Patagonia
(Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile, 2011)El potencial de producción de un rodal puede definirse a través de la calidad de sitio. Una forma de medir dicha calidad es a través de ecuaciones de índice de sitio, existiendo distintos tipos de ecuaciones (forzadas y ... -
Monitoring drylands: The MARAS system
(Elsevier, 2018-11-09)MARAS (Monitoring of Arid and Semiarid Regions) consists of 379 ground monitors in Patagonia, a 624.500 km2 semiarid area of southern Argentina and Chile. The objective of this paper was to describe the system and analyze ... -
Módulo Antártico de Producción Hidropónica: primeros resultados del cultivo en la Antártida Argentina = Antarctic Hydroponic Production module: first results of cultivation in Argentine Antarctica
(Universidad Nacional de la Patagonia Austral, 2023-06-16)Una forma de producir alimentos frescos de manera eficiente e intensiva en ambientes extremos es mediante técnicas hidropónicas. Éstas han sido ampliamente utilizadas en el mundo, sobre todo desde la década de 1960 hasta ... -
Multi-taxon biodiversity assessment of Southern Patagonia: Supporting conservation strategies at different landscapes.
(Elsevier, 2022-04-01)In the last years, different spatial analyses were developed to support multi-taxon biodiversity conservation strategies. In fact, the use of species distribution models as input allowed to create spatial decision-support ... -
Native diversity buffers against severity of non-native tree invasions
(Springer Nature, 2023-09)Determining the drivers of non-native plant invasions is critical for managing native ecosystems and limiting the spread of invasive species1,2. Tree invasions in particular have been relatively overlooked, even though ... -
Natural dynamics and thinning response of young lenga [Nothofagus pumilio] trees in secondary forests of Southern Patagonia = Dinámica natural y respuesta al raleo de árboles juveniles de lenga (Nothofagus pumilio) en bosques secundarios en Patagonia Sur
(2013)For saw-log production, planned thinning in secondary forests may reduce the time to yield products of a desired size and quality. To explore some options, long-term monitoring plots were established in 1996 in two secondary ... -
Neochelanops michaelseni (Pseudoscorpiones: Chernetidae) as potential bioindicator in managed and unmanaged Nothofagus forests of Tierra del Fuego
(BioOne, 2015-11-01)Bioindicators could act as early warning indicators of environmental changes, ecosystem stress or taxonomic diversity. Pseudoscorpions have rarely been used as bioindicators, due to lack of information about their ecology, ... -
Nitrogen but not phosphorus addition affects symbiotic N2 fixation by legumes in natural and semi‑natural grasslands located on four continents
(Springer Nature, 2022-09)The amount of nitrogen (N) derived from symbiotic N2 fixation by legumes in grasslands might be affected by anthropogenic N and phosphorus (P) inputs, but the underlying mechanisms are not known. Methods We evaluated ... -
Nothing lasts forever: Dominant species decline under rapid environmental change in global grasslands
(British Ecological Society, 2023-11)1. Dominance often indicates one or a few species being best suited for resource capture and retention in a given environment. Press perturbations that change availability of limiting resources can restructure competitive ... -
Nueva base de datos reticulada de precipitación para la provincia de Santa Cruz, Argentina.
(Centro Argentino de Meteorólogos (CAM), 2021-06-25)La precipitación es una variable esencial para caracterizar el clima y el ciclo hidrológico de una región. Pero a pesar de su importancia, existen vastas regiones, como Patagonia sur, con redes pluviométricas poco densas ... -
Nueva base de datos reticulada de temperatura para la provincia de Santa Cruz, Argentina
(Centro Argentino de Meteorólogos (CAM), 2022-06)La temperatura del aire es una variable biofísica que incide en la mayoría de los procesos bióticos y abióticos, así como también es una de las variables esenciales en estudios climatológicos, ecológicos e hidrológicos, y ... -
Nuevo registro del gato del pajonal grupo Leopardus colocola para el Chaco Seco de Argentina
(Sociedad Argentina para el Estudio de los Mamíferos (SAREM), 2023-08-04)La distribución real del grupo Leopardus colocola en el Chaco argentino es poco conocida. Este registro surgió como parte de un monitoreo con trampas cámara de mamíferos nativos en el Chaco Seco Argentino en áreas con ... -
Nutrient availability controls the impact of mammalian herbivores on soil carbon and nitrogen pools in grasslands
(Wiley, 2020-02)Grasslands are subject to considerable alteration due to human activities globally, including widespread changes in populations and composition of large mammalian herbivores and elevated supply of nutrients. Grassland soils ...