Listar Dpto. Ciencias del Medio Natural - Natura Ingurunearen Zientziak Saila por título
Mostrando ítems 68-87 de 130
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Isotopic composition of maize as related to N-fertilization and irrigation in the Mediterranean region
(Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, 2011) Artículo / ArtikuluaNitrate leaching as a result of excessive application of N-fertilizers and water use is a major problem of vulnerable regions. The farming of maize requires high N fertilization and water inputs in Spain. Isotopic ... -
Land use change effects on carbon and nitrogen stocks in the Pyrenees during the last 150 years: a modelling approach
In the southern Pyrenees, human population and therefore land uses have changed from forests to pastures, then crops, and back to pastures and secondary forests during the last two centuries. To understand what such rapid ... -
Leaf δ15N as a physiological indicator of the responsiveness of N2-fixing alfalfa plants to elevated CO2, temperature and low water availability
The natural 15N/14N isotope composition (δ15N) of a tissue is a consequence of its N source and N physiological mechanisms in response to the environment. It could potentially be used as a tracer of N metabolism in plants ... -
Leaves play a central role in the adaptation of nitrogen and sulfur metabolism to ammonium nutrition in oilseed rape (Brassica napus)
Background: The coordination between nitrogen (N) and sulfur (S) assimilation is required to suitably provide plants with organic compounds essential for their development and growth. The N source induces the adaptation of ... -
Libro de resúmenes de comunicaciones del XI Congreso Nacional de la Asociación Española de Ecología Terrestre: Invitación a la ecología, estrechando lazos con la sociedad. Pamplona-Iruña, 6-10 de mayo de 2013.
(Asociación Española de Ecología Terrestre (AEET), 2013) Contribución a congreso / Biltzarrerako ekarpenaEl lema del XI Congreso de la AEET, “Invitación a la Ecología: estrechando lazos con la Sociedad” enfatiza el necesario reconocimiento mutuo entre los ecólogos y el resto de la sociedad. La sociedad evoluciona más ... -
Linkages between climate, seasonal wood formation and mycorrhizal mushroom yields
Fungi provide important forest ecosystem services worldwide. In Mediterranean pine forests, predicted warmer and drier conditions could lead to a decline in mushroom yields. Climate is a key factor regulating both tree ... -
Local (gut) and systemic metabolism of rats is altered by consumption of raw bean (Phaseolus vulgaris L. var. athropurpurea)
The composition of the raw legume Phaseolus vulgaris L. var. athropurpurea (PhVa) and its effects on the metabolism of young growing rats have been evaluated. The levels of protein, unsaturated fatty acids, carbohydrate, ... -
Local inhibition of nitrogen fixation and nodule metabolism in drought-stressed soybean
Drought stress is a major factor limiting symbiotic nitrogen fixation (NF) in soybean crop production. However, the regulatory mechanisms involved in this inhibition are still controversial. Soybean plants were symbiotically ... -
Long-term mannitol-induced osmotic stress leads to stomatal closure, carbohydrate accumulation and changes in leaf elasticity in Phaselous vulgaris leaves
The effect of long-term osmotic stress was investigated in leaves of two common bean lines, with contrasting tolerance: Flamingo (tolerant) and coco blanc (sensitive). Water relations, organic solute, ion accumulation ... -
Maintaining ecosystem function by restoring forest biodiversity: reviewing decision-support tools that link biology, hydrology and geochemistry
Not all forest models are applicable to a meta-modelling approach. Hence, the objective of the research presented here was to identify and compare the available forest models already being used in research, and to evaluate ... -
Más allá de los modelos de crecimiento: modelos ecológicos híbridos en el contexto del manejo forestal sostenible
El desafío actual en el manejo forestal es la planificación de suministros sostenibles de madera y otros valores forestales, a la vez que se preserva la integridad del ecosistema forestal. En conse- cuencia, el uso de ... -
Meat waste as feedstock for home composting: effects on the process and quality of compost
Home composting is a powerful tool, which is spreading in different parts of the world, to reduce the generation of municipal waste. However, there is debate concerning the appropriateness, in terms of domestic hygiene and ... -
Metabolismo del azufre en la simbiosis guisante - rhizobium
Las leguminosas constituyen un cultivo importante para la agricultura sostenible, debido en parte a su capacidad para fijar el N atmosférico en simbiosis con bacterias del suelo mediante la fijación biológica de nitrógeno ... -
Modelling the management of forest ecosystems: importance of wood decomposition
Scarce and uncertain data on woody debris decomposition rates are available for calibrating forest ecosystem models, owing to the difficulty of their empirical estimations. Using field data from three experimental sites which ... -
Modelos ecológicos: descripción, explicación y predición
Los ecosistemas son, por definición, complejos sistemas en los que factores biológicos, climáticos y geológicos se combinan con factores sociales, políticos y económicos para producir una serie de procesos ambientales que ... -
Multi-scale approach to forest functioning of Pinus sylvestris L. and Fagus sylvatica L. mixtures of the Pyrenees under global change
Hoy en día, los bosques mixtos son cada vez más reconocidos como superiores a los bosques puros en cuanto a la provisión de una completa gama de bienes y servicios ecosistémicos. La gestión de los bosques en una condición ... -
Multimodel simulations of forest harvesting effects on long-term productivity and CN cycling in aspen forests
The effects of forest management on soil carbon (C) and nitrogen (N) dynamics vary by harvest type and species. We simulated long‐term effects of bole‐only harvesting of aspen (Populus tremuloides) on stand productivity ... -
Multiple pathway succession in coastal Tsuga heterophylla, Thuja plicata and Abies amabilis forests on northeastern Vancouver Island, British Columbia
Sustainable forest practices are often designed to mimic natural disturbance and successional processes, yet succession is poorly understood in many ecosystems. On northeastern Vancouver Island, the ‘disturbance hypothesis’ ... -
Nitrogen source as key factor conditioning responsiveness of Arabidopsis plants to elevated CO2 conditions
The amount of carbon dioxide (CO2) in Earth's atmosphere has exceeded 400 parts per million (ppm) during three continuous months of observations in 2014, which is an absolute record for the last 800,000 years. As a ... -
Nodule carbohydrate catabolism is enhanced in the Medicago truncatula A17-Sinorhizobium medicae WSM419 symbiosis
The symbiotic association between Medicago truncatula and Sinorhizobium meliloti is a well-established model system in the legume–Rhizobium community. Despite its wide use, the symbiotic efficiency of this model has been ...