Títulos
Mostrando ítems 127-146 de 216
-
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 ... -
Nutrient enrichment increases invertebrate herbivory and pathogen damage in grasslands
(British Ecological Society, 2022-02)1- Plant damage by invertebrate herbivores and pathogens influences the dynamics of grassland ecosystems, but anthropogenic changes in nitrogen and phosphorus availability can modify these relationships. 2- Using a globally ... -
Ojos que no ven… ¿Qué podemos hacer para incluir más a la fracción subterránea en estudios de vegetación?
(Asociación Argentina de Ecología, 2020-06)Conocer la estructura y el funcionamiento de la fracción subterránea de la vegetación es fundamental para comprender numerosos procesos que ocurren en distintos niveles de organización. Sin embargo, dicha fracción fue menos ... -
Opposing community assembly patterns for dominant and non-dominant plant species in herbaceous ecosystems globally
(Wiley Ecology and evolution, 2021-11-22)Biotic and abiotic factors interact with dominant plants—the locally most frequent or with the largest coverage—and nondominant plants differently, partially because dominant plants modify the environment where nondominant ... -
Partición diferencial de nutrientes en arboles de Nothofagus antarctica creciendo en un gradiente de calidades de sitio en Patagonia Sur = Different nutrient allocation in Nothofagus antarctica trees growing over a site quality gradient in South Patagonia
(2013)Nothofagus antarctica (ñire) es una especie nativa caducifolia que crece al sur de Argentina y Chile. Estudiar la distribución de nutrientes en árboles es importante como base para el entendimiento de la dinámica de los ... -
Pastoreo estratégico de ambientes para mejorar la producción ovina en campos del ecotono Bosque-Estepa en Patagonia Sur = Strategic grazing management for better sheep production at the forest-grass steppe ecotone in southern Patagonia
(Asociación Argentina de Producción Animal, 2014-06)El manejo del pastoreo en sistemas ganaderos extensivos con múltiples ambientes se presenta como un desafío dadas las condiciones climáticas y la configuración de los ambientes en los grandes potreros (300-5000 ha) propios ... -
Pasture and grassland productivity and foliar elongation of wheatgrass in Southern Patagonia = Productividad de pastura y pastizal y elongación foliar de agropiros en la Patagonia austral = Produtividade pastagem e pasto natural e alongamento foliar de agropyros no Sul da Patagônia
(INIA Uruguay y Facultad de Agronomía, Universidad de la República, 2023-07-28)The aim of this work was to show the relationship of the productivity of a pasture and grassland, the living and dead material, and the foliar elongation of wheatgrass with the soil moisture and the thermal sum in Southern ... -
Photosynthetic response to different light intensities, water status and leaf age of two Berberis species (Berberidaceae) of Patagonia steppe, Argentina.
(Elsevier, 2011-11)Net photosynthetic rate (A) and stomatal conductance (gs) from leaves of Berberis buxifolia and Berberis heterophylla saplings were measured under different conditions of radiation and water availability and for leaves of ... -
Photosynthetic response to water stress of the main grass species of southern patagonian steppe, Argentina
(Elsevier, 2024-10)Comparative studies of basic physiological performance are needed to give insight of how grass species survive and grow under current and more severe drought predicted in the framework of climate change in arid steppe ... -
Physico-chemical properties of plant cuticles and their functional and ecological significance
(2017-11)Most aerial plant surfaces are covered with a lipid-rich cuticle, which is a barrier for the bidirectional transport of substances between the plant and the surrounding environment. This review article provides an overview ... -
Plasticidad ecofisiológica de plántulas de Nothofagus pumilio frente a combinaciones de niveles de luz y humedad en el suelo
(Asociación Argentina de Ecología, 2011)Las propuestas silvícolas para el manejo de los bosques de Nothofagus pumilio se basan sobre la apertura del canopeo para estimular el crecimiento de la regeneración natural; de esta manera se incrementa la disponibilidad ... -
Positive biodiversity-productivity relationship predominant in global forests
(American Association for the Advancement of Science, 2016-10-14)The biodiversity-productivity relationship (BPR) is foundational to our understanding of the global extinction crisis and its impacts on ecosystem functioning. Understanding BPR is critical for the accurate valuation and ...