11 research outputs found

    Negative responses of highland pines to anthropogenic activities in inland Spain: a palaeoecological perspective

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    Palaeoecological evidence indicates that highland pines were dominant in extensive areas of the mountains of Central and Northern Iberia during the first half of the Holocene. However, following several millennia of anthropogenic pressure, their natural ranges are now severely reduced. Although pines have been frequently viewed as first-stage successional species responding positively to human disturbance, some recent palaeobotanical work has proposed fire disturbance and human deforestation as the main drivers of this vegetation turnover. To assess the strength of the evidence for this hypothesis and to identify other possible explanations for this scenario, we review the available information on past vegetation change in the mountains of northern inland Iberia. We have chosen data from several sites that offer good chronological control, including palynological records with microscopic charcoal data and sites with plant macro- and megafossil occurrence. We conclude that although the available long-term data are still fragmentary and that new methods are needed for a better understanding of the ecological history of Iberia, fire events and human activities (probably modulated by climate) have triggered the pine demise at different locations and different temporal scales. In addition, all palaeoxylological, palynological and charcoal results obtained so far are fully compatible with a rapid human-induced ecological change that could have caused a range contraction of highland pines in western Iberia

    A sensory and nutritional validation of open ocean mussels (Mytilus galloprovincialis Lmk.) cultured in SE Bay of Biscay (Basque Country) compared to their commercial counterparts from Galician Rías (Spain)

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    Thickness and (%) CaCO3 variations in the couplets marl-limestone of the lower Maastrichtian at the Sopelana section (Basque Arc)

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    The Sopelana sea-cliff section exposes, in very good conditions, a continuous marl-limestone alternation from the Lower Maastrichtian in the deep Basque Arc domain. The 55 rhythms studied represent ~1100 ka and correspond to ~60cm/20ka. The marls are thicker than limestone layers and the Fischer diagram detects several shifts of high sedimentation and a well-marked minimum. The spectral analysis of the (%) CaCO3 content of the 30 selected rhythms (179 analysis, 18.74 m), confirms the rhythm with two frequency peaks, which correspond to the precession and eccentricity periods. The high-resolution analysis of four rhythms (<2cm/sample; 117 analysis, 2.04 m) shows a lack of symmetry and a different behaviour among them. The weathering surfaces point out an (%, CaCO3 ) enrichment tendenc

    Actividades para la enseñanza de inglés a través de contenidos en secundaria : (Curso PALE de Secundaria 2007, C.P.R. de Oviedo)

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    El Programa PALE (programa de apoyo al aprendizaje de lenguas extranjeras), cofinanciado por el Ministerio de Educación y Ciencia y las Comunidades Autónomas, pretende dar respuesta, desde el Sistema Educativo, a las necesidades derivadas de la mejora de la enseñanza y el aprendizaje de lenguas extranjeras en una sociedad como la actual, donde las lenguas se consideran conocimientos básicos que precisa la ciudadanía europea para su formación, para mejorar sus posibilidades de empleo, para la promoción del intercambio cultural y para la realización personal. Esta publicación es el fruto del grupo de trabajo constituido en la tercera fase del curso PALE 2007 para Secundaria del C.P.R. de Oviedo, tras la formación recibida en Asturias y en el extranjero. Se presentan una serie actividades para llevar a cabo en el aula a partir de los contenidos en Secundaria en las áreas de: Arte, Biología, Ciudadanía, Ciencias Sociales, Matemáticas, Música, Educación Física, Física y Química, y Tecnología. Las unidades trabajadas son respectivamente: Observation; Vertebrate animals; Human rights; 3-d shapes; Sound and its properties; Outdoor activities; Work and energy; Electricity; Technical materials. El libro está acompañado por 1 CD-ROM que muestra los contenidos en versión PDF y PowerPoint.AsturiasUniversidad de Oviedo. Facultad de Ciencias de la Educación; Calle Aniceto Sela s. n.; 33005 Oviedo; +34985103215; +34985103214;ES

    Reviewing the Lateglacial–Holocene transition in NW Iberia: A palaeoecological approach based on the comparison between dissimilar regions

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    Novel Technologies for the Preservation of Chilled Aquatic Food Products

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    24 pagesMost fish and other aquatic species give rise to products of great economic importance in many countries. The demand for such products has been increasing steadily over the last century and shows no signs of lessening, as fishing and farming actually constitute a basic source of food for all populations of the worldN

    The native status of Pinus pinaster on serpentine soils: charcoal analysis and palaeoenvironmental history in Sierra Bermeja (southern Iberian Peninsula, Spain)

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