991 resultados para Mediterranean History


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La finalidad de este trabajo es examinar qué rol puede desempeñar la historia comparada en el futuro de la historia antigua. Mi propósito es mostrar por qué la historia comparada es importante, así como explorar las diferentes formas de realizar una historia comparada y las ventajas y desventajas que estas formas implican. Los historiadores antiguos utilizaron la historia comparada para completar la carencia de evidencia antigua, para estudiar las similitudes entre áreas y períodos separados en el tiempo y en el espacio, para "desfamiliarizar lo familiar", o para analizar cómo habían tratado problemas similares los otros historiadores. Este artículo analiza los problemas metodológicos que los diferentes abordajes de la historia comparada implican y provee una revisión de cómo esos abordajes afectaron diversas áreas de la historia antigua. Aunque cada abordaje puede ofrecer su propia y valiosa contribución, existen razones importantes para preferir un abordaje entre otros.

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La finalidad de este trabajo es examinar qué rol puede desempeñar la historia comparada en el futuro de la historia antigua. Mi propósito es mostrar por qué la historia comparada es importante, así como explorar las diferentes formas de realizar una historia comparada y las ventajas y desventajas que estas formas implican. Los historiadores antiguos utilizaron la historia comparada para completar la carencia de evidencia antigua, para estudiar las similitudes entre áreas y períodos separados en el tiempo y en el espacio, para "desfamiliarizar lo familiar", o para analizar cómo habían tratado problemas similares los otros historiadores. Este artículo analiza los problemas metodológicos que los diferentes abordajes de la historia comparada implican y provee una revisión de cómo esos abordajes afectaron diversas áreas de la historia antigua. Aunque cada abordaje puede ofrecer su propia y valiosa contribución, existen razones importantes para preferir un abordaje entre otros.

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La finalidad de este trabajo es examinar qué rol puede desempeñar la historia comparada en el futuro de la historia antigua. Mi propósito es mostrar por qué la historia comparada es importante, así como explorar las diferentes formas de realizar una historia comparada y las ventajas y desventajas que estas formas implican. Los historiadores antiguos utilizaron la historia comparada para completar la carencia de evidencia antigua, para estudiar las similitudes entre áreas y períodos separados en el tiempo y en el espacio, para "desfamiliarizar lo familiar", o para analizar cómo habían tratado problemas similares los otros historiadores. Este artículo analiza los problemas metodológicos que los diferentes abordajes de la historia comparada implican y provee una revisión de cómo esos abordajes afectaron diversas áreas de la historia antigua. Aunque cada abordaje puede ofrecer su propia y valiosa contribución, existen razones importantes para preferir un abordaje entre otros.

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Integrating connectivity patterns into marine ecosystem management is a fundamental step, specially for stock subjected to the combined impacts of human activities (overfishing, habitat degradation, etc.) and climate changes. Thus, management of marine resources must incorporates the spatial scales over which the populations are connected. Notwithstanding, studying these dynamics remains a crucial and hard task and the predictions of the temporal and spatial patterns of these mechanisms are still particularly challenging. This thesis aims to puzzle over the red mullet Mullus barbatus population connectivity in the Western Mediterranean Sea, by implementing a multidisciplinary approach. Otolith sclerochronology, larval dispersal modelling and genetic techniques were gathered in this study. More particularly, this research project focused on early life history stages of red mullet and their role in the characterization of connectivity dynamics. The results show that M. barbatus larval dispersal distances can reach a range of 200 km. The differences in early life traits (i.e. PLD, spawning and settlement dates) observed between various areas of the Western Mediterranean Sea suggest a certain level of larval patchiness, likely due to the occurrence of different spawning pulses during the reproductive period. The dispersal of individuals across distant areas, even not significant in demographic terms, is accountable for the maintenance of the genetic flow among different demes. Fluctuations in the level of exchange among different areas, due to the variability of the source-sink dynamics, could have major implications in the population connectivity patterns. These findings highlight the reliability of combining several approaches and represent a benchmark for the definition of a proper resource management, with considerable engagements in effectively assuring the beneficial effects of the existent and future conservation strategies.

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Holocene climates and human impact in the Mediterranean basin have received much attention, but the Maltese Islands in the Central Mediterranean, although a pivotal area, have been little researched. Here, sedimentary and palynological data are presented for three cores from the Holocene coastal and shallowmarine
deposits of the Maltese Islands. These show deforestation from Pinus-Cupressaceae woodland in the early Neolithic, and then a long, but relatively stable history of agriculturally degraded environments to the present day. The major climate events which have affected the Italian and Balkan peninsulas to the
north, and Tunisia to the south, are not reflected in the pollen diagrams from the Maltese Islands because of the strong anthropogenic imprint on the Maltese vegetation from early in the Neolithic. Previous suggestions of environmentally-driven agricultural collapse at the end of the Neolithic appear, however,
to be substantiated and may be linked to regional aridification around 4300 cal. BP. Depopulation in early Medieval times is not supported by the current palynological evidence.

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Fil: Piantanida, Fernando Martín. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Instituto de Investigaciones en Humanidades y Ciencias Sociales (UNLP-CONICET); Argentina.

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Fil: Piantanida, Fernando Martín. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Instituto de Investigaciones en Humanidades y Ciencias Sociales (UNLP-CONICET); Argentina.

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We reconstructed vegetation responses to climate oscillations, fire and human activities since the last glacial maximum in inland NW Iberia, where previous paleoecological research is scarce. Extremely sparse and open vegetation composed of steppic grasslands and heathlands with scattered pioneer trees suggests very cold and dry conditions during the Oldest Dryas, unsuitable for tree survival in the surroundings of the study site. Slight woodland expansion during the Bolling/Allerod was interrupted by the Younger Dryas cooling. Pinewoods dominated for most of the early Holocene, when a marked increase in fire activity occurred. Deciduous trees expanded later reaching their maximum representation during the mid-Holocene. Enhanced fire activity and the presence of coprophilous fungi around 6400-6000 cal yr BP suggest an early human occupation around the site. However, extensive deforestation only started at 4500 calyrBP, when fire was used to clear the tree canopy. Final replacement of woodlands with heathlands, grasslands and cereal crops occurred from 2700 cal yr BP onwards due to land-use intensification. Our paleoecological record can help efforts aimed at restoring the natural vegetation by indicating which communities were dominant at the onset of heavy human impact, thus promoting the recovery of currently rare oak and alder stands.

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Shipwrecks constitute a primary source for the study of the ancient economy. In this paper, we will highlight some of those whose cargo contained amphorae of Lusitanian production. These are of the utmost importance for understanding the navigation routes and the Lusitanian fish products export routes in the western Mediterranean.

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The spread of nonindigenous species into new habitats is having a drastic effect on natural ecosystems and represents an increasing threat to global biodiversity. In the marine environment, where data on the movement of invasive species is scarce, the spread of alien seaweeds represents a particular problem. We have employed a combination of plastid microsatellite markers and DNA sequence data from three regions of the plastid genome to trace the invasive history of the green alga Codium fragile ssp. tomentosoides. Extremely low levels of genetic variation were detected, with only four haplotypes present in the species’ native range in Japan and only two of these found in introduced populations. These invasive populations displayed a high level of geographical structuring of haplotypes, with one haplotype localized in the Mediterranean and the other found in Northwest Atlantic, northern European and South Pacific populations. Consequently, we postulate that there have been at least two separate introductions of C. fragile ssp. tomentosoides from its native range in the North Pacific.

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Investigations of geomorphology, geoarchaeology, pollen, palynofacies, and charcoal indicate the comparative scales and significance of palaeoenvironmental changes throughout the Holocene at the junction between the hyper-arid hot Wadi â??Arabah desert and the front of the Mediterranean-belt Mountains of Edom in southern Jordan through a series of climatic changes and episodes of intense mining and smelting of copper ores. Early Holocene alluviation followed the impact of Neolithic grazers but climate drove fluvial geomorphic change in the Late Holocene, with a major arid episode corresponding chronologically with the â??Little Ice Ageâ?? causing widespread alluviation. The harvesting of wood for charcoal may have been sufficiently intense and widespread to affect the capacity of intensively harvested tree species to respond to a period of greater precipitation deduced for the Roman-Byzantine period - a property that affects both taphonomic and biogeographical bases for the interpretation of palynological evidence from arid-lands with substantial industrial histories. Studies of palynofacies have provided a record of human and climatic causes of soil erosion, and the changing intensity of the use of fire over time. The patterns of vegetational, climatic change and geomorphic changes are set out for this area for the last 8000 years.