99 research outputs found

    Peopling of Huelva coast in Roman times and its relation to high-energy marine events

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    Las investigaciones geomorfológicas y arqueológicas que actualmente se están desarrollando en el Paraje Natural Marismas del Odiel −reserva de la Biosfera por la UNESCO−, especialmente en el cordón arenoso de La Cascajera, han ofrecido interesantes resultados que permiten retomar los estudios sobre la ocupación del litoral onubense en época romana desde un punto de vista diacrónico en el tránsito del bajo imperio hacia la tardo-antigüedad. A este respecto son numerosas las factorías pesqueras (cetariae) que jalonan la costa más occidental de la antigua Provincia Baetica y en las cuales, ahora tras un proceso de revisión, se pueden intuir o comprobar momentos de ruptura y recuperación en sus explotaciones que habría que poner en relación con eventos marinos catastróficos (Extreme Waves Event - EWE) que, de manera histórica, han afectado a estas costas.The geomorphologic and archaeological research that currently is being developed in the Odiel Marshland Nature Reserve −Biosphere Reserve by UNESCO−, especially in the sand barrier of La Cascajera, have provided interesting results that allow know about the occupation of Huelva coast in Roman times from a diachronic point of view in the transition from Late Empire to the Late Antiquity. In that respect are numerous fish salting plants (cetariae) that dot the western coast of the former province Baetica and which now after a review process, it can sense or see moments of breakdown and recovery in their holdings should be put in relation to extreme wave events (EWE) that historically have affected these shores

    Marine events and coastal settlements in Southwestern Iberia

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    La costa es una de las zonas más dinámicas del sistema terrestre, donde se produce la interacción de los procesos terrestres y marinos. Los cambios en el nivel relativo del mar, la evolución costera y los fenómenos extremos, como tormentas y tsunamis, son de gran interés local y global. La forma en que las culturas pasadas han hecho frente a los cambios ambientales y a los riesgos naturales proporciona importantes lecciones para la respuesta humana a los cambios futuros. Es frecuente que algunos estudio geoarqueológicos actuales, con enfoques geomorfológicos, paleoambientales y sedimentológicos, carezcan de la adecuada integración de datos arqueológicos e históricos. Este número especial de la revista Cuaternario y Geomorfología tiene como objetivo proporcionar una plataforma multidisciplinar que sirva para definir el estado actual de la ciencia geoarqueológica, en relación con los eventos marinos pasados de alta energía registrados en la costa ibérica del golfo de Cádiz. Confiamos que las contribuciones que aquí se presentan estimulen un fructífero debate sobre estos nuevos enfoques interdisciplinares y se mejore el conocimiento sobre la interacción entre los asentamientos humanos costeros y los riesgos geológicos pasadosOne of the most dynamic parts of the earth system is where terrestrial processes interact with marine processes on the coast. Changes in relative sea level, coastal evolution and extreme events such as storms and tsunamis are of local and global interest. Such events hinder individual well-being and intensify/enhance environmental degradation. In a changing world, in which climate and sea-level change impact on human habitats, geoarchaeological research is highly relevant. The way past cultures coped with environmental change and natural hazards provide important lessons for human responses to future environmental changes. Geomorphological, palaeoenvironmental and sedimentological approaches in geoarchaeological studies frequently lack the integration of archaeological and historical data. This special issue of the journal "Cuaternario y Geomorfología" therefore aims to provide a multidisciplinary platform to define the present state of geoarchaeological science throughout the Iberian coast of the Gulf of Cádiz. All the contributions will stimulate the debate on new approaches to study human-environmental interaction and address research themes such as 'palaeo-geohazards' (e.g. tsunami, earthquake and coastal and fluvial flooding

    Medidas de política y acciones del sector agroalimentario frente al COVID-19

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    Presenta gráficos que muestran las medidas tomadas por los países para mitigar los efectos de la pandemia en el sector agroalimentario y las medidas para fomentar la recuperación y actividad agroalimentaria distribuidas en políticas macronómicas y sociales, políticas comerciales, políticas horizontales de apoyo al sector y políticas por cadenas agroalimentaria

    A Bayesian approach to study the risk variables for tuberculosis occurrence in domestic and wild ungulates in South Central Spain

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    Background: Bovine tuberculosis (bTB) is a chronic infectious disease mainly caused by Mycobacterium bovis. Although eradication is a priority for the European authorities, bTB remains active or even increasing in many countries, causing significant economic losses. The integral consideration of epidemiological factors is crucial to more cost-effectively allocate control measures. The aim of this study was to identify the nature and extent of the association between TB distribution and a list of potential risk factors regarding cattle, wild ungulates and environmental aspects in Ciudad Real, a Spanish province with one of the highest TB herd prevalences. Results: We used a Bayesian mixed effects multivariable logistic regression model to predict TB occurrence in either domestic or wild mammals per municipality in 2007 by using information from the previous year. The municipal TB distribution and endemicity was clustered in the western part of the region and clearly overlapped with the explanatory variables identified in the final model: (1) incident cattle farms, (2) number of years of veterinary inspection of big game hunting events, (3) prevalence in wild boar, (4) number of sampled cattle, (5) persistent bTB-infected cattle farms, (6) prevalence in red deer, (7) proportion of beef farms, and (8) farms devoted to bullfighting cattle. Conclusions: The combination of these eight variables in the final model highlights the importance of the persistence of the infection in the hosts, surveillance efforts and some cattle management choices in the circulation of M. bovis in the region. The spatial distribution of these variables, together with particular Mediterranean features that favour the wildlife-livestock interface may explain the M. bovis persistence in this region. Sanitary authorities should allocate efforts towards specific areas and epidemiological situations where the wildlife-livestock interface seems to critically hamper the definitive bTB eradication success

    A new roman fish-salting workshop in the Saltes Island (Tinto-Odiel Estuary, SW Spain): La Cascajera and its archaeological and geological context

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    The southwestern Atlantic coast of the Iberian Peninsula presents an important Roman heritage that includes numerous fish-salting workshops, with an industrial activity that went on for almost a millennium (1st century BC-7th century AD). Nevertheless, a future broad research is still necessary to determine the geologic substratum on which they are based, their palaeoenvironmental evolution, their main economic objectives and the byproducts derived from their activities. This paper is focused on the geology, dating and the archaeological record of La Cascajera, a new site located in the Tinto-Odiel estuary (SW Spain). This new cetaria occupied the northwestern end of La Cascajera ridge (Saltés Island), constituted by sandy, bioclastic deposits of previous washover fans (1st-2th centuries AD). During the main period of activity (middle of 4th century AD-5th century AD), the existence of a certain typology of amphorae as well as the documentation of a shell deposit formed mostly by Glycymeris suggest that this factory was oriented to the production of mixed fish sauces and the handling of edible bivalves. The main features of this deposit (texture, paleontology, taphonomy) could be used to differentiate middens from natural shelly ridges.La costa suratlántica de la Península Ibérica posee un importante legado romano que incluye numerosos talleres halieúticos, con una actividad que se desarrolló durante casi un milenio (siglo I a.C.-siglo VII d.C.). Sin embargo, se precisan nuevas investigaciones que determinen el contexto geológico en el que se desarrollaron, su evolución paleoambiental, sus principales objetivos económicos y los subproductos derivados de sus actividades. Este trabajo se centra en la geología, datación y registro arqueológico de La Cascajera, un nuevo yacimiento localizado en el estuario de los ríos Tinto y Odiel (S.O. de España). Esta nueva cetaria ocupaba el extremo noroccidental de la cresta de La Cascajera (Isla de Saltés), constituida por depósitos bioclásticos arenosos de abanicos de derrame previos (siglos I-II d.C.). Durante su principal periodo de actividad (mitad del siglo IV d.C.-siglo V d.C.), la existencia de una cierta tipología de ánforas así como la existencia de un conchero formado principalmente por Glycymeris sugieren que esta factoría estaba dedicada a la producción de salsas mixtas de pescado y la extracción de bivalvos comestibles. Las principales características de este conchero (textura, paleontología, tafonomía) podrían ser usadas para diferenciar concheros de acumulaciones naturales de conchas.Ministerio de Innovación, Ciencia y Empresa de España. Plan Nacional de I+D+i DEATLANTIR II-HAR2017-89154-PJunta de Andalucía-HUM-132, RNM-238 y RNM-29

    Late Holocene archaeobotanical evolution of the Canale di Imbocco (Roman imperial port of Portus, Central Italy)

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    The Roman port of Portus was the most important in the Mediterranean during the imperial period (27 BC–476 AD). It wasmade up of an outer port or Claudius basin and an inner hexagon or Trajan's port, joined by the Canale di Imbocco. The archaeobotanical record obtained in a continuos sediment core taken in this channel ismade up of 19 types of plant macroremains, with a predominance of fibers of the seagrass Posidonia oceanica L., replaced by fluvial sediments in the upper part of the core. Seeds, fruits and thorns of aquatic species frommarine or brackish waters, halophyte species, edible species, freshwater riparian vegetation and remains of charcoal and wood also appear regularly. According to the inferred palaeoenviromental evolution of this core, Portus was an area of fluvial-marine interaction during the Roman Empire, with brackish water conditions interrupted by stormy periods deduced from the record of P. oceanica. The archaeobotanical and sedimentary evolution points to a restriction of marine contributions and a final implantation of a fluvial environment. In this evolution, a specific interval with abundant charcoal and caryopses of Triticum could correspond to a fire, which was followed by a possible period of greater construction activity linked with large fragments of wood.This paper was jointly supported by the following projects: a) project DGYCIT CTM2006-06722/MAR; b) DGYCIT project CGL2006-01412; c) “From the Atlantic to the Mediterranean (DEATLANTIR): Research in the infrastructures of Portus-Ostia Antica: the Lanterna wharf” (Programme of Archeology Projects Abroad, Ministry of Culture and Sports); d) From the Atlantic to the Tyrrhenian. Hispanic ports and their commercial relations with Ostia Antica (DEATLANTIR II - HAR2017-89154-P - (National R&D Plan)); and e) FEDER project 2014-2020 UHU-1260298. Other funds come from the research groups HUM-132, RNM-238 and RNM-293 (P.A.I.D.I). It is a contribution to the Center for Research in Historical, Cultural and Natural Heritage of the University of Huelva. The archaeobotanical record is deposited in the Laboratory of Paleontology and Applied Ecology of the University of Huelva

    Modelling the mid-late Holocene evolution of the Huelva Estuary and its human colonization, South-Western Spain

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    The major changes that occurred in the southwestern estuaries of the Spanish Atlantic coast during the last 6500 yr BP were simultaneous to human settlement and therefore the understanding of their coastal evolution will help interpreting human patterns in these areas. The study of the morpho-sedimentary features of new outcrops appearing in the middle sector of Saltés Island (Huelva Estuary, Spain) has been used to develop a model to understand the complex evolution of sand barriers than can be applied to similar inlets along the Atlantic Iberian coast. The first human settlements (6000–4000 yr BP) in the early Huelva Estuary (Tinto and Odiel rivers) were located in the ancient coastal banks or in the nearby hills. From 4000 yr BP onwards, the estuarine sediments started to emerge as sand barriers and chenier plains, prograding towards the mouth. As the littoral strands stabilized morphologically, they were colonized by human settlements in successive periods, the oldest inland (Almendral) and more recent outward (Cascajera). The study of the upper sedimentary layers of La Cascajera barrier display a tempestitic sequence of landward progradational washover-fans. The calibrated and modelled AMS dates in marine shells provide a storminess time range between the second half of first century BCE and the entire first century CE. Sedimentary records are useful to evaluate environmental changes, either from natural or anthropogenic causes, such as global and climate change. The interrelationship between the archaeological findings (mainly salting fish factories and old ports) and the morpho sedimentary evolution at the mouth of the Tinto and Odiel rivers allows us to highlight not only the Huelva Estuary's dynamics evolution, but also the possible regional patterns of human habitation from the beginning of the present sea-level highstand (middle Holocene).Ministerio de Economía y Competitividad CGL2010-15810/BTEEuropean Union (UE) EU Excellence Project of the Andalusia Board SEJ-477

    Association of High Serum Levels of Growth Factors with Good Outcome in Ischemic Stroke : a Multicenter Study

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    Altres ajuts: This project was partially supported by grants from Xunta de Galicia (Consellería Educación: GRC2014/027 and IN607A2018/3), Spanish Research Network on Cerebrovascular Diseases RETICS-INVICTUS PLUS (RD16/0019), and by the European Union FEDER program.The main objective of this research work was to study the association of serum levels of growth factors (GF) and SDF-1α with the functional outcome and reduction of lesion volume in ischemic stroke patients. In this multicenter study, 552 patients with non-lacunar stroke (male, 62.1%; mean age, 68.2 ± 11.4) were included within 24 h from symptom onset. The main outcome variable was good functional outcome (modified Rankin Scale [mRS] ≤ 2) at 12 months. Secondary outcome variable was infarct volume (in mL) after 6 ± 3 months. Serum levels of VEGF, Ang-1, G-CSF, BDNF, and SDF-1α were measured by ELISA at admission, 7 ± 1 days, at 3 ± 1 months, and 12 ± 3 months. Except for BDNF, all GF and SDF-1α serum levels showed a peak value at day 7 and remained elevated during the first 3 months (all p < 0.01). High serum levels at day 7 of VEGF (OR, 19.3), Ang-1 (OR, 14.7), G-CSF (OR, 9.6), and SDF-1α (OR, 28.5) were independently associated with good outcome at 12 months (all p < 0.0001). On the other hand, serum levels of VEGF (B, − 21.4), G-CSF (B, − 14.0), Ang-1 (B, − 13.3), and SDF-1α (B, − 44.6) measured at day 7 were independently associated with lesion volume at 6 months (p < 0.01). In summary, high serum levels of VEGF, Ang-1, G-CSF, and SDF-1α at day 7 and 3 months after ischemic stroke are associated with good functional outcome and smaller residual lesion at 1 year of follow-up
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