39 research outputs found

    Nota editorial

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    Palaeohispanica nació en 2001 con el objetivo de convertirse en el foro de encuentro de los paleohispanistas con una querencia evidente hacia las inscripciones subrayada por dos de sus secciones fijas: ‘Novedades epigráficas’ y ‘Chronica epigraphica’. Desde luego los estudios paleohispánicos, por definición multidisciplinarios, abarcan otras fuentes y disciplinas, pero los epígrafes constituyen el espacio por excelencia en el que filólogos y lingüistas, historiadores y epigrafistas, numísmatas y arqueólogos terminamos siempre por encontrarnos. Por ello configuran el núcleo duro de la especialidad. A lo largo de las dos últimas décadas la revista ha acudido siempre puntual a su cita anual con sus volúmenes ordinarios, con los consagrados a editar las actas de los coloquios paleohispánicos y con alguno extraordinario, distinguidos cromáticamente por el recurso al verde, al azul y al rojo respectivamente. Pero, más allá del cambio de coloración de las cubiertas, el aspecto exterior de la revista no ha sufrido modificaciones conservando el entrañable diseño creado para el primer número por José Luis Cano. Tampoco se ha modificado apenas la maquetación interior, procurada con celo artesanal por nuestro equipo editorial. Con el número diecinueve, sin embargo, hemos querido dotar a Palaeohispanica de un nuevo aspecto exterior e interior, confiado a Víctor Valdivielso_Estudio creativo, con la finalidad de subrayar el tránsito de Palaeohispanica de revista convencional en papel a revista electrónica. Palaeohispanica nació en 2001 con la vocación de respetar los compromisos básicos con la puntualidad ..

    Massive Consumption of Gelatinous Plankton by Mediterranean Apex Predators

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    Stable isotopes of carbon and nitrogen were used to test the hypothesis that stomach content analysis has systematically overlooked the consumption of gelatinous zooplankton by pelagic mesopredators and apex predators. The results strongly supported a major role of gelatinous plankton in the diet of bluefin tuna (Thunnus thynnus), little tunny (Euthynnus alletteratus), spearfish (Tetrapturus belone) and swordfish (Xiphias gladius). Loggerhead sea turtles (Caretta caretta) in the oceanic stage and ocean sunfish (Mola mola) also primarily relied on gelatinous zooplankton. In contrast, stable isotope ratios ruled out any relevant consumption of gelatinous plankton by bluefish (Pomatomus saltatrix), blue shark (Prionace glauca), leerfish (Lichia amia), bonito (Sarda sarda), striped dolphin (Stenella caerueloalba) and loggerhead sea turtles (Caretta caretta) in the neritic stage, all of which primarily relied on fish and squid. Fin whales (Balaenoptera physalus) were confirmed as crustacean consumers. The ratios of stable isotopes in albacore (Thunnus alalunga), amberjack (Seriola dumerili), blue butterfish (Stromaeus fiatola), bullet tuna (Auxis rochei), dolphinfish (Coryphaena hyppurus), horse mackerel (Trachurus trachurus), mackerel (Scomber scombrus) and pompano (Trachinotus ovatus) were consistent with mixed diets revealed by stomach content analysis, including nekton and crustaceans, but the consumption of gelatinous plankton could not be ruled out completely. In conclusion, the jellyvorous guild in the Mediterranean integrates two specialists (ocean sunfish and loggerhead sea turtles in the oceanic stage) and several opportunists (bluefin tuna, little tunny, spearfish, swordfish and, perhaps, blue butterfish), most of them with shrinking populations due to overfishing

    Back to the future? Late Holocene marine food web structure in a warm climatic phase as a predictor of trophodynamics in a warmer South-Western Atlantic Ocean

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    Stable carbon and nitrogen isotope ratios in the skeletal elements of both ancient and modern marine species from the Beagle Channel were used to compare the structure of Late Holocene and modern food webs, and predict potential changes as a result of a Sea Surface Temperature (SST) increase in the region. Complementary, ancient and modern shells of limpets and mussels were isotopically analysed to explore changes in the isotopic baseline and compare marine food webs through time after an appropriate correction for baseline shifts. Results confirmed a declining pattern of marine primary productivity during the Late Holocene in the Beagle Channel. In general, the isotopic niches overlapped largely in the ancient food web in comparison to the current marine one, with the exception of that of cormorants (Phalacrocorax sp.). Our data suggest that all the species that have undergone intense human exploitation (Arctocephalus australis, Otaria flavescens and Merluccius sp.) significantly increased their trophic levels. The most important finding of this work was the very high isotopic overlap between snoek (Thyrsites atun) and hake (Merluccius sp.) during the Late Holocene. Increasing SST as a result of global warming could favour the recolonization of the southern South-Western Atlantic Ocean by snoek from the South-Eastern Pacific Ocean, with a potential impact on the landings of the economically important Argentine and Austral hake. These findings highlight the relevance of using zooarchaeological remains for providing predictions about marine food webs changes in the near future.Fil: Bas López, Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad de Barcelona; EspañaFil: Briz Godino, Ivan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. University of York; Reino UnidoFil: Alvarez, Myrian Rosa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Vales, Damián Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; ArgentinaFil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; ArgentinaFil: Cardona, Luis. Universidad de Barcelona; Españ
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