Bivalves and brachiopods in the Carboniferous - Early Permian of Argentine Precordillera: Diversification and faunal turnover in Southwestern Gondwana

Diversification patterns and faunistic turnovers of bivalves and brachiopods through the Carboniferous - Early Permian interval in the central western Argentinian basins are analyzed and compared with the global events proposed in former studies. This study reveals a generalized increase of bivalves, at familiar and generic levels, through three time intervals, i.e., Early Carboniferous (Tournaisian-Visean), Late Carboniferous (Bashkirian-Kasimovian) and Early Permian (Asselian-Sakmarian), while the brachiopod diversity seems to remain stable from the Late Carboniferous to the Early Permian. The trends recognized in the faunistic diversity appear to be closely related to the palaeoclimatic, palaeogeographic and palaeotectonic evolution at the Southwestern Gondwana margin. Highly stressing environmental changes in the Early Carboniferous, resulting fundamentally from the development of glacial conditions, may account for the lowest faunistic diversity recorded. Particular stress conditions, such as the nutrient availability, temperature and oxygen level, would have mainly affected the brachiopod faunas that evidence the lowest diversity recognized in the interval studied. At the Visean-Serpukovian boundary, the Late Palaeozoic marine record of the Precordillera shows a major break linked to a globally recognized glacial maximum, whereas an important faunistic turnover is mainly identified in the brachiopod faunas at the beginning of the Late Carboniferous. The more stable, less stressing environmental situation developed during the Late Carboniferous-Early Permian postorogenic sedimentation is also reflected by the different faunal assemblages studied. The Late Carboniferous was characterized by postglacial transgressions. During this time local rebound, a continuous increase of the diversity and an important faunal turnover, which mainly affected the brachiopod faunas, were recorded. These faunal trends may be related to the Early Permian climatic amelioration that affected the central western Argentinian basins. The subsequent Permian transgressive events, which produced new areas of potential spreading for the benthic fauna, allowed its increase and diversification, much better reflected by the bivalve assemblages

Early seed plants from western Gondwana: Palaeobiogeographical and ecological implications based on Tournaisian (Lower Carboniferous) records from Argentina

The oldest seed occurrences in Western Gondwana have been recognized in a new stratigraphic section locatedin Western Argentina (Precordillera Basin). Palynological evidence indicates an Early Mississippian (probablyTournaisian) age for this new succession. The two identified early seeds generas, Pseudosporogonites cf. halleiand Warsteinia sancheziae n. sp. were up to now considered as restricted to the Devonian of Laurussia. This findingsuggests a dispersal of earliest spermatophytes between Laurussia and Gondwana during Devonian/Tournaisian times, thus accounting for the Rheic Ocean as a surmountable biogeographic barrier for continentalbiotas. Alternatively, contrasting biogeographic hypotheses dealing with early spermatophytes rising inpaleotropics and then displacing herbaceous communities of non-spermatophytes typical from cool high latitudinalregions, are explored for explaining the recognized paleobiogeographical pattern. The new informationsupports a weak impact of the Devonian/Carboniferous biotic crisis on earliest seed plant diversity. Based on preliminaryevidences of niches differentiation and ecological dynamics probably affected by wildfires, TournaisianGondwanan plant communities from high latitudes are interpreted as being more complex than previouslythought, and more similar to those reported from Laurussia. In addition, their discovery in a sedimentary environmentassociated to glacigenic deposits, show that this new record might be linked to the coeval glacial agewidely recorded elsewhere in Gondwana.Fil: Prestiani, C. Royal Belgian Institute Of Natural Sciences; BélgicaFil: Rustán, Juan José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Balseiro, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Vaccari, Norberto Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Sterren, A.F.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Steemans, P.. Université de Liège; BélgicaFil: Rubinstein, C.V.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; ArgentinaFil: Astini R.A.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentin

A pharmacy medication alert system based on renal function in older patients.

Item does not contain fulltextBACKGROUND: Patients with diabetes or cardiovascular disease are at risk of reduced renal function and frequently use drugs that interact with renal function. GPs monitor renal function in these patients. Computerised prescription systems produce alerts in patients labelled as having chronic kidney disease, but alerts are often ignored. If pharmacists use a pharmacy medication alert system (PMAS) based on renal function, they can provide the GP with therapeutic advice to optimise the medication. The extent of this advice and the feasibility in the clinical context are unknown. AIM: To assess the therapeutic advice formulated by pharmacists with help of a PMAS based on the renal function of patients aged >/=70 years with diabetes or cardiovascular disease. DESIGN AND SETTING: Observational study in primary health care in the Netherlands. METHOD: GPs provided pharmacists with the renal function of older patients with diabetes or cardiovascular disease who were using target drugs, that is, drugs requiring therapeutic advice in patients with reduced renal function. With the help of a PMAS, pharmacists assessed the actual medication. The GP weighed the advice in relation to the clinical context of the individual patient. RESULTS: Six hundred and fifty patients were prescribed 1333 target drugs. Pharmacists formulated 143 therapeutic recommendations (11% of target drugs) concerning 89 patients (13.7% of study population). In 71 recommendations in 52 patients (8.0% of study population), the GP agreed immediately. CONCLUSION: The use of a PMAS resulted in therapeutic advice in 11% of the target drugs. After weighing the clinical context, the GP agreed with half of the advice.01 augustus 201

Nuevos registros de Braquiópodos y consideraciones sobre las faunas de Tivertoniastreptorhynchus (Moscoviano) y Costatumulus amosi (Pérmico temprano) del oeste argentino: reexamen de las secciones clave de las Quebradas Agua del Jagüel y Santa Elena

The brachiopod Coolkilella aredesi sp. nov. and Calytrixia piersoni sp. nov. are proposed on the basis of specimens from the Del Salto, Río del Peñón and Agua del Jagüel formations. Their biostratigraphic implications are discussed together with new records of Septosyringothyris (Precosyringothyris) jaguelensis Lech and Streptorhynchus inaequiornatus Leanza at the top of the latter unit. The stratigraphic record, paleontological content and age of both the Tivertonia-Streptorhynchus assemblage (Moscovian) and the younger Costatumulus amosi fauna (Sakmarian–Artinskian) were reviewed and assessed based on outcrops at Quebrada Agua del Jagüel and Quebrada Santa Elena. Faunal content confirms the most recent stratigraphic, biostratigraphic and paleoclimatic frameworks. These a diachronic nature of the Agua del Jagüel and Cordón del Jagüel formations, supporting the absence of an early Permian glacial event in western Argentina.Se proponen las nuevas especies de braquiópodos Coolkilella aredesi sp. nov. y Calytrixia piersoni sp. nov. sobre la base de especímenes provenientes de las formaciones Del Salto, Río del Peñón y Agua del Jagüel. Se analizan sus implicancias bioestratigraficas junto al significado de nuevos registros de Septosyringothyris (Precosyringothyris) jaguelensis Lech y Streptorhynchus inaequiornatus Leanza en el techo de la última unidad mencionada. Se revisan y precisan el registro estratigráfico, contenido paleontológico y edades de la asociación de Tivertonia-Streptorhynchus (Moscoviano) y de la fauna más joven de Costatumulus amosi (Sakmariano—Artinskiano) en los afloramientos de las Quebradas de Agua de Jagüel y Santa Elena. El contenido faunístico permite corroborar los más recientes esquemas estratigráficos, bioestratigráficos y paleoclimáticos, reconociendo las formaciones Agua del Jagüel y Cordón del Jagüel como unidades diacrónicas y desestimando a su vez la existencia de un evento glacial Pérmico en el oeste de Argentina.Fil: Taboada, Arturo Cesar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Esquel. Laboratorio de Investigaciones en Evolución y Biodiversidad; Argentin

Early seed plants from Western Gondwana: Paleobiogeographical and ecological implications based on Tournaisian (Lower Carboniferous) records from Argentina

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