45 research outputs found

    Biodiversidad de los LIC Banco de La Concepción y Espacil marino del oriente y sur de Lanzarote-Fuerteventura. Especies protegidas y formadoras de hábitats

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    Two large areas belonging to the Canary Islands marine demarcation are part of the Natura 2000 network as Sites of Community Importance (SCI): “ESZZ15001-Banco de la Concepción” (total area 609,721.92 ha; depth range 158-2,687 m) and “ESZZ15002-Espacio marino del oriente y sur de Lanzarote y Fuerteventura” (total area 1,433,248.92 ha; depth range 0-3,300 m). Within the framework of the LIFE INTEMARES IP project, Action A.2.1, and before the designation of these two SCIs as Special Areas of Conservation, the Spanish Institute of Oceanography (IEO) is responsible for completing information necessary for the development of management plans. In the present study, a general analysis of the biodiversity of the two SCIs is carried out, starting from the updated catalogs, based mainly on previous IEO research and on information from the Canary Islands Biodiversity Data Bank, a comprehensive database of the Regional Government that draws on all current and historical information, backed by documents supervised by specialists. Special emphasis is placed on protected species and habitat forming species, which are considered key elements for management.Dos grandes zonas de la demarcación marina de las islas Canarias forman parte de la Red Natura 2000 como Lugares de Importancia Comunitaria (LIC): “ESZZ15001-Banco de la Concepción” (área total 609.721,92 ha; rango de profundidad 158-2.687 m) y “ESZZ15002-Espacio marino del oriente y sur de Lanzarote y Fuerteventura” (área total 1.433.248,92 ha; rango de profundidad 0-3.300 m). El Instituto Español de Oceanografía (IEO) ha sido encargado de completar la información necesaria para el desarrollo de los planes de gestión, como paso previo a la declaración de estos LIC como Zonas de Especial Conservación, en el marco del proyecto LIFE IP INTEMARES, Acción A.2.1. En el presente trabajo se realiza un análisis general de la biodiversidad de los dos LIC, partiendo de los catálogos actualizados, basados principalmente en investigaciones previas del IEO y en la información del Banco de Datos de Biodiversidad de Canarias, una completa base de datos que recopila toda la información actual e histórica, respaldada por documentos supervisados por especialistas. Se presta una especial atención a las especies protegidas y a las formadoras de hábitats, que son consideradas elementos claves para la gestiónTwo large areas belonging to the Canary Islands marine demarcation are part of the Natura 2000 network as Sites of Community Importance (SCI): “ESZZ15001-Banco de la Concepción” (total area 609,721.92 ha; depth range 158-2,687 m) and “ESZZ15002-Espacio marino del oriente y sur de Lanzarote y Fuerteventura” (total area 1,433,248.92 ha; depth range 0-3,300 m). Within the framework of the LIFE INTEMARES IP project, Action A.2.1, and before the designation of these two SCIs as Special Areas of Conservation, the Spanish Institute of Oceanography (IEO) is responsible for completing information necessary for the development of management plans. In the present study, a general analysis of the biodiversity of the two SCIs is carried out, starting from the updated catalogs, based mainly on previous IEO research and on information from the Canary Islands Biodiversity Data Bank, a comprehensive database of the Regional Government that draws on all current and historical information, backed by documents supervised by specialists. Special emphasis is placed on protected species and habitat forming species, which are considered key elements for management.En prens

    NEXTGENDEM: información genética, geoespacial y supercomputación para mejorar la gestión de especies y espacios en Macaronesia

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    Project NEXTGENDEM (MAC2/4.6d/236, https://lupus.itccanarias.org/nextgendem/es/) complements multiple research disciplines to provide verified and validated scientific data that help managers make more informed conservation decisions. As a result of the mobilization and enrichment of the sample and data banks of the Jardín Botánico Canario “Viera y Clavijo” -UA CSIC and the Instituto Nacional de Investigação e Desenvolvimento Agrário de Cabo Verde, tools will be developed for the estimation of phylogenetic diversity of the terrestrial endemic flora of these islands, the approximation to the molecular taxonomic identification of samples, phylogenetic reconstruction, and territorial analysis merging biotic and abiotic variables. Our main objective is to organise, analyse and apply the most relevant scientific knowledge to guide in situ and ex situ actions to improve the conservation status of the flora of Gran Canaria (Canary Islands) and Santiago (Cape Verde), although we plan to incorporate other Macaronesian territories in future projectsEl proyecto NEXTGENDEM (MAC2/4.6d/236, https://lupus.itccanarias.org/nextgendem/es/) complementa múltiples disciplinas de investigación para proporcionar datos científicos contrastados y validados que faciliten a los gestores la toma de decisiones de conservación más informadas. A consecuencia de la movilización y el enriquecimiento de los bancos de muestras y datos del Jardín Botánico Canario ¿Viera y Clavijo¿ ¿ UA CSIC y del Instituto Nacional de Investigação e Desenvolvimento Agrário de Cabo Verde, se pondrán a punto herramientas para la estimación de la diversidad filogenética de la flora terrestre insular, la aproximación a la identificación taxonómica molecular de muestras, la reconstrucción de filogenias, y el análisis territorial integrado con variables bióticas y abióticas. Nuestro objetivo principal es organizar, analizar y aplicar el conocimiento científico más relevante para guiar actuaciones in situ y ex situ que mejoren el estado de conservación de las floras de Gran Canaria (Islas Canarias) y Santiago (Cabo Verde), aunque prevemos incorporar otros territorios macaronésicos en futuros proyecto

    Are anthropogenic factors affecting nesting habitat of sea turtles? The case of Kanzul beach, Riviera Maya-Tulum (Mexico)

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    Marine coast modification and human pressure affects many species, including sea turtles. In order to study nine anthropogenic impacts that might affect nesting selection of females, incubation and hatching survival of loggerhead (Caretta caretta) and green turtle (Chelonia mydas), building structures were identified along a 5.2 km beach in Kanzul (Mexico). A high number of hotels and houses (88; 818 rooms), with an average density of 16.6 buildings per kilometer were found. These buildings form a barrier which prevents reaching the beach from inland, resulting in habitat fragmentation. Main pressures were detected during nesting selection (14.19% of turtle nesting attempts interrupted), and low impact were found during incubation (0.77%) and hatching (4.7%). There were three impacts defined as high: beach furniture that blocks out the movement of hatchlings or females, direct pressure by tourists, and artificial beachfront lighting that can potentially mislead hatchlings or females. High impacted areas showed lowest values in nesting selection and hatching success. Based on our results, we suggest management strategies to need to be implemented to reduce human pressure and to avoid nesting habitat loss of loggerhead and green turtle in Kanzul, Mexico

    Lung resistance-related protein as a predictor of clinical outcome in advanced testicular germ-cell tumours

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    This study was undertaken to investigate the expression and predictive value for outcome of multidrug resistance-associated (MDR) proteins P-glycoprotein (Pgp), MRP1, BCRP, and LRP, in advanced testicular germ-cell tumours (TGCT). Paraffin-embedded sections from 56 previously untreated patients with metastatic TGCT were immunostained for Pgp, MRP1, BCRP, and LRP. All patients received platinum-based chemotherapy after orchidectomy. Immunostaining was related to clinicopathological parameters, response to chemotherapy, and outcome. Strong and intermediate expressions of the different MDR-related proteins were: 27 and 41% (Pgp), 54 and 37% (MRP1), 86 and 7% (BCRP), and 14 and 29% (LRP). P-glycoprotein and MRP1 associated, respectively, to low AFP (P=0.026) and high LDH levels (P=0.014), whereas LRP expression associated with high beta-hCG levels (P=0.003) and stage IV tumours (P=0.029). No correlation was found between Pgp, MRP1, and BCRP expression and response to chemotherapy and survival. In contrast, patients with LRP-positive tumours (strong or intermediate expression) had shorter progression-free (P=0.0006) and overall survival (P=0.0116) than LRP-negative patients, even after individual log-rank adjustments by statistically associated variables. Our data suggest that a positive LRP immunostaining at the time of diagnosis in metastatic TGCT is associated with an adverse clinical outcome

    Preferential Occupancy of R2 Retroelements on the B Chromosomes of the Grasshopper Eyprepocnemis plorans

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    R2 non-LTR retrotransposons exclusively insert into the 28S rRNA genes of their host, and are expressed by co-transcription with the rDNA unit. The grasshopper Eyprepocnemis plorans contains transcribed rDNA clusters on most of its A chromosomes, as well as non-transcribed rDNA clusters on the parasitic B chromosomes found in many populations. Here the structure of the E. plorans R2 element, its abundance relative to the number of rDNA units and its retrotransposition activity were determined. Animals screened from five populations contained on average over 12,000 rDNA units on their A chromosomes, but surprisingly only about 100 R2 elements. Monitoring the patterns of R2 insertions in individuals from these populations revealed only low levels of retrotransposition. The low rates of R2 insertion observed in E. plorans differ from the high levels of R2 insertion previously observed in insect species that have many fewer rDNA units. It is proposed that high levels of R2 are strongly selected against in E. plorans, because the rDNA transcription machinery in this species is unable to differentiate between R2-inserted and uninserted units. The B chromosomes of E. plorans contain an additional 7,000 to 15,000 rDNA units, but in contrast to the A chromosomes, from 150 to over 1,500 R2 elements. The higher concentration of R2 in the inactive B chromosomes rDNA clusters suggests these chromosomes can act as a sink for R2 insertions thus further reducing the level of insertions on the A chromosomes. These studies suggest an interesting evolutionary relationship between the parasitic B chromosomes and R2 elements.This study was supported by grants from the Spanish Ministerio de Ciencia y Tecnología (CGL2009-11917) and Plan Andaluz de Investigacion (CVI-6649), and was partially performed by FEDER funds and a grant from the National Institutes of Health (GM42790)

    Gas flows, star formation and galaxy evolution

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    In the first part of this article we show how observations of the chemical evolution of the Galaxy: G- and K-dwarf numbers as functions of metallicity, and abundances of the light elements, D, Li, Be and B, in both stars and the interstellar medium (ISM), lead to the conclusion that metal poor HI gas has been accreting to the Galactic disc during the whole of its lifetime, and is accreting today at a measurable rate, ~2 Msun per year across the full disc. Estimates of the local star formation rate (SFR) using methods based on stellar activity, support this picture. The best fits to all these data are for models where the accretion rate is constant, or slowly rising with epoch. We explain here how this conclusion, for a galaxy in a small bound group, is not in conflict with graphs such as the Madau plot, which show that the universal SFR has declined steadily from z=1 to the present day. We also show that a model in which disc galaxies in general evolve by accreting major clouds of low metallicity gas from their surroundings can explain many observations, notably that the SFR for whole galaxies tends to show obvious variability, and fractionally more for early than for late types, and yields lower dark to baryonic matter ratios for large disc galaxies than for dwarfs. In the second part of the article we use NGC 1530 as a template object, showing from Fabry-Perot observations of its Halpha emission how strong shear in this strongly barred galaxy acts to inhibit star formation, while compression acts to stimulate it.Comment: 20 pages, 10 figures, to be presented at the "Penetrating Bars through Masks of Cosmic Dust" conference in South Africa, proceedings published by Kluwer, Eds. D.L. Block, K.C. Freeman, I. Puerari, & R. Groes

    CIBERER : Spanish national network for research on rare diseases: A highly productive collaborative initiative

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    Altres ajuts: Instituto de Salud Carlos III (ISCIII); Ministerio de Ciencia e Innovación.CIBER (Center for Biomedical Network Research; Centro de Investigación Biomédica En Red) is a public national consortium created in 2006 under the umbrella of the Spanish National Institute of Health Carlos III (ISCIII). This innovative research structure comprises 11 different specific areas dedicated to the main public health priorities in the National Health System. CIBERER, the thematic area of CIBER focused on rare diseases (RDs) currently consists of 75 research groups belonging to universities, research centers, and hospitals of the entire country. CIBERER's mission is to be a center prioritizing and favoring collaboration and cooperation between biomedical and clinical research groups, with special emphasis on the aspects of genetic, molecular, biochemical, and cellular research of RDs. This research is the basis for providing new tools for the diagnosis and therapy of low-prevalence diseases, in line with the International Rare Diseases Research Consortium (IRDiRC) objectives, thus favoring translational research between the scientific environment of the laboratory and the clinical setting of health centers. In this article, we intend to review CIBERER's 15-year journey and summarize the main results obtained in terms of internationalization, scientific production, contributions toward the discovery of new therapies and novel genes associated to diseases, cooperation with patients' associations and many other topics related to RD research

    The wide-field, multiplexed, spectroscopic facility WEAVE : survey design, overview, and simulated implementation

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    Funding for the WEAVE facility has been provided by UKRI STFC, the University of Oxford, NOVA, NWO, Instituto de Astrofísica de Canarias (IAC), the Isaac Newton Group partners (STFC, NWO, and Spain, led by the IAC), INAF, CNRS-INSU, the Observatoire de Paris, Région Île-de-France, CONCYT through INAOE, Konkoly Observatory (CSFK), Max-Planck-Institut für Astronomie (MPIA Heidelberg), Lund University, the Leibniz Institute for Astrophysics Potsdam (AIP), the Swedish Research Council, the European Commission, and the University of Pennsylvania.WEAVE, the new wide-field, massively multiplexed spectroscopic survey facility for the William Herschel Telescope, will see first light in late 2022. WEAVE comprises a new 2-degree field-of-view prime-focus corrector system, a nearly 1000-multiplex fibre positioner, 20 individually deployable 'mini' integral field units (IFUs), and a single large IFU. These fibre systems feed a dual-beam spectrograph covering the wavelength range 366-959 nm at R ∼ 5000, or two shorter ranges at R ∼ 20,000. After summarising the design and implementation of WEAVE and its data systems, we present the organisation, science drivers and design of a five- to seven-year programme of eight individual surveys to: (i) study our Galaxy's origins by completing Gaia's phase-space information, providing metallicities to its limiting magnitude for ∼ 3 million stars and detailed abundances for ∼ 1.5 million brighter field and open-cluster stars; (ii) survey ∼ 0.4 million Galactic-plane OBA stars, young stellar objects and nearby gas to understand the evolution of young stars and their environments; (iii) perform an extensive spectral survey of white dwarfs; (iv) survey  ∼ 400 neutral-hydrogen-selected galaxies with the IFUs; (v) study properties and kinematics of stellar populations and ionised gas in z 1 million spectra of LOFAR-selected radio sources; (viii) trace structures using intergalactic/circumgalactic gas at z > 2. Finally, we describe the WEAVE Operational Rehearsals using the WEAVE Simulator.PostprintPeer reviewe

    The wide-field, multiplexed, spectroscopic facility WEAVE: Survey design, overview, and simulated implementation

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    WEAVE, the new wide-field, massively multiplexed spectroscopic survey facility for the William Herschel Telescope, will see first light in late 2022. WEAVE comprises a new 2-degree field-of-view prime-focus corrector system, a nearly 1000-multiplex fibre positioner, 20 individually deployable 'mini' integral field units (IFUs), and a single large IFU. These fibre systems feed a dual-beam spectrograph covering the wavelength range 366-959\,nm at R5000R\sim5000, or two shorter ranges at R20000R\sim20\,000. After summarising the design and implementation of WEAVE and its data systems, we present the organisation, science drivers and design of a five- to seven-year programme of eight individual surveys to: (i) study our Galaxy's origins by completing Gaia's phase-space information, providing metallicities to its limiting magnitude for \sim3 million stars and detailed abundances for 1.5\sim1.5 million brighter field and open-cluster stars; (ii) survey 0.4\sim0.4 million Galactic-plane OBA stars, young stellar objects and nearby gas to understand the evolution of young stars and their environments; (iii) perform an extensive spectral survey of white dwarfs; (iv) survey 400\sim400 neutral-hydrogen-selected galaxies with the IFUs; (v) study properties and kinematics of stellar populations and ionised gas in z<0.5z<0.5 cluster galaxies; (vi) survey stellar populations and kinematics in 25000\sim25\,000 field galaxies at 0.3z0.70.3\lesssim z \lesssim 0.7; (vii) study the cosmic evolution of accretion and star formation using >1>1 million spectra of LOFAR-selected radio sources; (viii) trace structures using intergalactic/circumgalactic gas at z>2z>2. Finally, we describe the WEAVE Operational Rehearsals using the WEAVE Simulator.Comment: 41 pages, 27 figures, accepted for publication by MNRA

    HE-LHC: The High-Energy Large Hadron Collider – Future Circular Collider Conceptual Design Report Volume 4

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    In response to the 2013 Update of the European Strategy for Particle Physics (EPPSU), the Future Circular Collider (FCC) study was launched as a world-wide international collaboration hosted by CERN. The FCC study covered an energy-frontier hadron collider (FCC-hh), a highest-luminosity high-energy lepton collider (FCC-ee), the corresponding 100 km tunnel infrastructure, as well as the physics opportunities of these two colliders, and a high-energy LHC, based on FCC-hh technology. This document constitutes the third volume of the FCC Conceptual Design Report, devoted to the hadron collider FCC-hh. It summarizes the FCC-hh physics discovery opportunities, presents the FCC-hh accelerator design, performance reach, and staged operation plan, discusses the underlying technologies, the civil engineering and technical infrastructure, and also sketches a possible implementation. Combining ingredients from the Large Hadron Collider (LHC), the high-luminosity LHC upgrade and adding novel technologies and approaches, the FCC-hh design aims at significantly extending the energy frontier to 100 TeV. Its unprecedented centre-of-mass collision energy will make the FCC-hh a unique instrument to explore physics beyond the Standard Model, offering great direct sensitivity to new physics and discoveries
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