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Mostrando ítems 63-82 de 212
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Essential Nutrient and Trace Element Foliar Resorption of Two Co-Existing Nothofagus Species Grown Under Different Environmental Conditions in Southern Patagonia
(Frontiers Media, 2019-11)Nutrient resorption is crucial for mineral element conservation and efficiency of forest species, but knowledge on its significance and the mechanisms involved is still limited for most species and habitats. Focusing on ... -
Establecimiento y producción de forraje de cereales de invierno en la patagonia austral
(Asociación Argentina de Producción Animal, 2020-12)Se realizó un ensayo con el objetivo de evaluar el establecimiento y la producción de forraje para henificación de una variedad y líneas de triticale (X Triticosecale Wittmack), variedades de trigo pan (Triticum aestivum ... -
Estimates of soil carbon concentration in tropical and temperate forest and woodland from available GIS data on three continents
(2013-04)Aim: Concern about climate change, with the subsequent emergence of carbonmarkets and policy initiatives such as REDD (reducing carbon emissions bydecreasing deforestation and forest degradation), have focused attention ... -
Evaluación de indicadores de degradación y biomasa radical en mallines de una cuenca hídrica del sur de Santa Cruz
(Asociación Argentina de Ecología, 2020)Se planteó un estudio con el objetivo de analizar la asociación entre indicadores de deterioro del suelo y la vegetación, evaluar los cambios de esas variables entre sectores y condiciones de degradación, y monitorear ... -
Evaluación de la calidad nutricional en pasturas de gramíneas perennes relacionada con el estado fenológico y el ambiente en el Sur de Santa Cruz
(Universidad Nacional de la Patagonia Austral, 2022-09-30)En la Patagonia Austral la introducción de pasturas destinadas al uso estratégico en las áreas de mayor potencial representa una alternativa de manejo que permitiría aumentar la productividadde los sistemas ganaderos ... -
Evaluación de la sustentabilidad de un sistema productivo familiar: aplicación de un set de indicadores adaptados a la provincia de Santa Cruz
(Ediciones INTA, 2022-08)Para que un sistema productivo sea considerado sustentable, este debe ser factible de satisfacer sus necesidades actuales, sin comprometer la posibilidad de satisfacer las necesidades de las generaciones futuras. En la ... -
Evenness mediates the global relationship between forest productivity and richness
(British Ecological Society, 2023-06-07)1. Biodiversity is an important component of natural ecosystems, with higher species richness often correlating with an increase in ecosystem productivity. Yet, this relationship varies substantially across environments, ... -
Extreme drought impacts have been underestimated in grasslands and shrublands globally
(National Academy of Sciences (Estados Unidos), 2024-01-08)Climate change is increasing the frequency and severity of short-term (~1 y) drought events—the most common duration of drought—globally. Yet the impact of this intensification of drought on ecosystem functioning remains ... -
Flowering and seeding patterns in primary, secondary and silvopastoral managed Nothofagus antarctica forests in South Patagonia
(Taylor & Francis, 2010-06-11)The success ofthe reproductive process in trees depends on abiotic and biotic factors that determine the final outcome of natural regeneration. Silviculture alters biotic and abiotic factors and results in secondary forest ... -
Foliar N⁄ P ratio and nutrient limitation to vegetation growth on Keerqin sandy grassland of North-east China.
(Wiley, 2011-02-01)To examine whether the critical leaf N ⁄ P ratios (of 14, 16) are valid to test nutrient limitation in the context of semi-arid sandy grasslands, an experiment was conducted on a Keerqin sandy grassland in North-east China ... -
Forest carbon management strategies influence storage compartmentalization in Nothofagus antarctica forest landscapes
(Canadian Science Publishing, 2023-10)Silvopastoral systems are one of the strategies proposed to manage natural forests in southern Patagonia for livestock and timber purposes. In the context of climate change, it is necessary to design new management proposals ... -
El forraje verde hidropónico como una alternativa productiva en Patagonia Sur: productividad y calidad nutricional de dos variedades de cebada (Hordeum vulgare)
(Gerencia de Comunicación e Imagen Institucional, DNA SICC, INTA, 2018-12)La principal actividad agropecuaria de la provincia de Santa Cruz, en el sur de Argentina, es la cría extensiva de ganado ovino. Las inclemencias climáticas de la zona hacen que el alimento escasee en épocas invernales, o ... -
General destabilizing effects of eutrophication on grassland productivity at multiple spatial scales
(Springer Nature, 2020-10-23)Eutrophication is a widespread environmental change that usually reduces the stabilizing effect of plant diversity on productivity in local communities. Whether this effect is scale dependent remains to be elucidated. Here, ... -
Global patterns and environmental drivers of forest functional composition
(Wiley, 2024-02)To determine the relationships between the functional trait composition of forest communities and environmental gradients across scales and biomes and the role of species relative abundances in these relationships. Location: ... -
Global transpiration data from sap flow measurements: the SAPFLUXNET database
(Copernicus Publications, 2021-06-14)Plant transpiration links physiological responses of vegetation to water supply and demand with hydrological, energy, and carbon budgets at the land–atmosphere interface. However, despite being the main land evaporative ... -
Hepatitis parasitaria por Lamanema chavezi en guanacos (Lama guanicoe) faenados en la Provincia de Santa Cruz, Argentina
(Sociedad de Medicina Veterinaria, 2020-01)Durante la zafra 2017-18 en un frigorífico de la localidad de Río Gallegos, Argentina, se detectaron lesiones en hígados de guanacos (Lama guanicoe) a la faena. Con el fin de caracterizar y determinar la causa de las ... -
Herbivores safeguard plant diversity by reducing variability in dominance
(2018-01)Reductions in community evenness can lead to local extinctions as dominant species exclude subordinate species; however, herbivores can prevent competitive exclusion by consuming otherwise dominant plant species, thus ... -
Herbivory and nutrients shape grassland soil seed banks
(Springer Nature, 2023-07-04)Anthropogenic nutrient enrichment and shifts in herbivory can lead to dramatic changes in the composition and diversity of aboveground plant communities. In turn, this can alter seed banks in the soil, which are cryptic ... -
Holistic versus continuous grazing in Patagonia: A station-scale case study of plant and animal production
(Elsevier, 2021-01)We compared animal and vegetation responses of a 13 600-ha area under holistic grazing management (HGM) with a similar area under continuous grazing (CGM) in a Patagonian station. Limitations were a dry 2012 −2016 experimental ... -
Human appropriation of net primary production related to livestock provisioning ecosystem services in Southern Patagonia
(MDPI, 2022-06-22)Human appropriation of net primary productivity (HANPP) integrates ecological and socioeconomic perspectives on land use by quantifying the amount of net primary production (NPP) appropriated by society through biomass ...