Now showing items 21-40 of 164

    • Effects of livestock management on carbon stocks and fluxes in grassland ecosystems in the Pyrenees 

      Casals, Pere; Garcia-Pausas, Jordi; Romanyà i Socoró, Joan; Sanz, Maria J.; Camarero, Lluís; Sebastià, Ma. T. (European Grassland Federation, 2004)
      Grassland ecosystems can constitute a source or a sink in the global C balance, and their management affect their position in that balance. We aim to assess soil organic carbon (SOC) content and determine how grazing affects ...
    • Publicacions sobre farratges i pastures a Catalunya (1800-2004) 

      Manent Vivas, Josep; Chocarro, Cristina; Fanlo Domínguez, Rosario; Lloveras Vilamanyà, Jaume; Sebastià, Ma. T. (Institució Catalana d'Estudis Agraris, 2006)
      A causa de la ràpida evolució de la tecnologia, una gran quantitat de publicacions sobre pastures i farratges fetes a Catalunya han quedat oblidades. S’aprofita l’oportunitat de participar en el projecte «Tipificación, ...
    • Nuevas tendencias en la producción de plantas de vivero de frutales 

      Urbina Vallejo, Valero; Dalmases Mestre, Josep; Pascual Roca, Miquel (Eumedia, 2006)
      La producción de planta de vivero de frutales debe adaptarse a los nuevos requisitos legales y a las necesidades de las explotaciones frutales. Los viveros tienen que incorporar rápidamente las nuevas variedades obtenidas, ...
    • Estado actual de las resistencias de malas hierbas a herbicidas 

      Taberner Palou, Andreu (Mapama, 2006)
      En este artículo se describe la situación actual de las resistencias de las malas hierbas a los herbicidas en España. Antes, sin embargo, se hace hincapié en las principales definiciones a tener en cuenta en este ámbito. ...
    • Grazing effects on the species-area relationship: Variation along a climatic gradient in NE Spain 

      de Bello, Francesco; Leps, Jan; Sebastià, Ma. T. (Wiley, 2007)
      Questions: Does grazing have the same effect on plant species richness at different spatial scales? Does the effect of spatial scale vary under different climatic conditions and vegetation types? Does the slope of the ...
    • Plant guilds drive biomass response to global warming and water availability in subalpine grassland 

      Sebastià, Ma. T. (Wiley, 2007)
      1. The consequences of global warming and changes in resource availability were investigated in subalpine grasslands in the Pyrenees. These communities are considered to be especially vulnerable to climate change because ...
    • Soil organic carbon storage in mountain grasslands of the Pyrenees: effects of climate and topography 

      Garcia-Pausas, Jordi; Casals, Pere; Huguet, Carme; Sebastià, Ma. T.; Thompson, Roy; Romanyà i Socoró, Joan; Camarero, Lluís (Springer Verlag, 2007)
      The prediction of soil C stocks across the landscape has been increasingly studied in many areas of the world. Soil organic C storage in mountain areas is highly heterogeneous, mainly as a result of local-scale variability ...
    • Evenness drives consistent diversity effects in intensive grassland systems across 28 European sites 

      Kirwan, Laura; Lüscher, Andreas; Sebastià, Ma. T.; Finn, John A.; Collins, R. P.; Porqueddu, C.; Helgadottir, A.; Baadshaug, Ole H.; Brophy, Caroline; Coran, C.; Dalmannsdóttir, S.; Delgado, Ignacio; Elgersma, Anjo; Fothergill, Michael; Frankow-Lindberg, Bodil E.; Golinski, Piotr; Grieu, Philippe; Gustavsson, Anne-Maj; Höglind, Mats; Huguenin-Elie, Olivier; Iliadis, C.; Jorgensen, M.; Kadziuliene, Zydre; Karyotis, T.; Lunnan, Tor; Malengier, M.; Maltoni, S.; Meyer, V.; Nyfeler, D.; Nykanen-Kurki, P.; Parente, J.; Smit, H.J.; Thumm, Ulrich; Connolly, John (Wiley, 2007)
      Ecological and agronomic research suggests that increased crop diversity in species-poor intensive systems may improve their provision of ecosystem services. Such general predictions can have critical importance for worldwide ...
    • Daños por heladas en frutales. Sintomatología y evaluación 

      Urbina Vallejo, Valero (Generalitat. Departament d'Agricultura, Ramaderia i Pesca, 2007)
    • Daños por granizo en frutales. Sintomatología y evaluación 

      Urbina Vallejo, Valero (Catalunya. Departament d'Agricultura, Ramaderia i Pesca, 2007)
    • Control de Oxalis latifolia: revisión y propuestas para su mejoramiento 

      Royo-Esnal, Aritz; López, María Luisa (Pontificia Universidad Católica de Chile, 2008)
      Oxalis latifolia is a weed with a tropical, temperate and mediterranean distribution. It invades orchards, plant nurseries, gardens and corn fi elds. Although some mechanical and cultural methods and some herbicides may ...
    • Soil carbon and plant diversity distribution at the farm level in the savannah region of Northern Togo (West Africa) 

      Sebastià, Ma. T.; Marks, E.; Poch, Rosa M. (European Geosciences Union, 2008)
      In western Africa, soil organic matter is a source of fertility for food provision and a tool for climate mitigation. In the Savannah region, strong soil degradation linked to an increase in population threatens organic ...
    • Grazing as a factor structuring grasslands in the Pyrenees 

      Sebastià, Ma. T.; de Bello, Francesco; Puig, Laura; Taull, Marc (Wiley, 2008)
      Questions: What are the relative roles of abiotic and grazing management factors on plant community distribution in landscapes? How are livestock type and stocking rate related to changes in vegetation structure and ...
    • Complex vegetation responses to soil disturbances in mountain grassland 

      Sebastià, Ma. T.; Puig, Laura (Springer Verlag, 2008)
      We studied vegetation responses to disturbances originated by ants and voles in subalpine grasslands in the Eastern Pyrenees. We compared the effects of these small-scale disturbances with those of a large-scale disturbance ...
    • Strong shifts in plant diversity and vegetation composition in grassland shortly after climatic change 

      Sebastià, Ma. T.; Kirwan, Laura; Connolly, John (Wiley, 2008)
      Questions: Is plant diversity in mesic grassland ecosystems vulnerable in the short-term to extreme climate change events? How rapidly can responses in vegetation composition occur in perennial grasslands? Are the ...
    • Stakeholder perceptions of the impacts of rural funding scenarios on mountain landscapes across Europe 

      Bayfield, Neil; Barancok, Peter; Furger, Markus; Sebastià, Ma. T.; Domínguez, Gloria; Lapka, Miloslav; Cudlinova, Eva; Vescovo, Loris; Ganielle, Damiano; Cernusca, Alexander; Tappeiner, Ulrike; Drösler, Matthias (Springer Verlag, 2008)
      This article examines how alternative rural funding scenarios might influence the pattern of functional land types in mountain areas. The study aims were to explore the use of stakeholders to predict landscape change and ...
    • Factors regulating carbon mineralization in the surface and subsurface soils of Pyrenean mountain grasslands 

      García-Pausas, Jordi; Casals, Pere; Camarero, Lluís; Huguet, Carme; Thompson, Roy; Sebastià, Ma. T.; Romanyà i Socoró, Joan (Elsevier, 2008)
      Although a large amount of soil carbon (C) is stored in subsurface soils, most studies on soil C dynamics focus on the upper layers. The aim of this study is to assess the factors that regulate C mineralization in mountain ...
    • Una visión actual del control de malas hierbas en cultivos extensivos 

      Taberner Palou, Andreu (Eumedia, 2008)
      En los cultivos extensivos el control de las malas hierbas es un aspecto de gran importancia para obtener la máxima producción posible y facilitar su manejo y cosecha. Sin embargo, en la actualidad hay una demanda ...
    • A germination study of herbicide-resistant field poppies in Spain 

      Cirujeda Ranzenberger, Alicia; Recasens i Guinjuan, Jordi; Torra Farré, Joel; Taberner Palou, Andreu (EDP SciencesInstitut national de la recherche agronomique (França), 2008)
      Field poppy, Papaver rhoeas L., is a very common weed in winter cereals in North-Eastern Spain. Its control is becoming difficult due to expanding herbicide resistance. To control field poppies there are alternative ...
    • Effect of temperature and moisture on the dormancy and activation pattern of Oxalis latifolia bulbs 

      Royo-Esnal, Aritz; López Fernández, María Luisa (Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (Espanya), 2008)
      Con objeto de buscar información para un mejor control de Oxalis latifolia Kunth, se ha estudiado el efecto que presentan la temperatura y la humedad sobre la activación de sus bulbos, tanto en la forma común como en la ...