Do Littoral Macrophytes Influence Crustacean Zooplankton Distribution?

In a meso-eutrophic reservoir, cladoceran and copepod assemblages were characterised in two sampling sites: One located in the pelagic zone (site 1) and the other in the shallow littoral zone (site 2), the latter colonised by emergent macrophytes. Samples were collected biweekly from June to July 2001 and from May to July 2002 at the two sites. At site 1, crustacean zooplankton samples were obtained by vertical hauls using a Wisconsin type net of 64 mm mesh size. At site 2 several random samples were obtained using a van Dorn bottle. Those samples were pooled together and the total sample was sieved through a 64 mm mesh size. Macrophyte relative abundance for each species was visually estimated. Macrophyte community was composed of Glyceria declinata, Eleocharis palustris and Carex sp. A Mann-Whitney U-test was carried out to test for statistically significant differences between sites, for environmental parameters and crustacean zooplankton species densities. Alona rectangula, Alona costata, Alona quadrangularis and Chydorus sphaericus were only found in littoral samples. Daphnia longispina, Daphnia pulex, Ceriodaphnia pulchella, Bosmina longirostris, Diaphanosoma brachyurum, Copidodiaptomus numidicus, and Acanthocyclops robustus were found at both sites. However, Daphnia and Bosmina densities did not differ significantly between the pelagic and littoral sites. Ceriodaphnia, Diaphanosoma, and C. numidicus densities were significantly higher in the pelagic site, whereas A. robustus densities showed the opposite pattern.En un embalse meso-eutrofico las comunidades de cladóceros y copépodos fueron caracterizadas en dos estaciones de muestreo. Una localizada en la zona pelágica (estación 1) y la otra en la zona litoral (estación 2). Esta última está colonizada por macrofitos emergidos. Los muestreos fueron efectuados quincenalmente de Junio a Julio de 2001 y de Mayo a Julio de 2002 en las dos estaciones. En la estación 1 los muestreos de crustáceos del zooplancton se obtuvieron mediante arrastre vertical utilizando una red tipo Wisconsin de 64 mm de poro. En la estación 2 se realizaron varias muestras aleatorias con una botella tipo van Dorn. Las muestras obtenidas en la estación 2 se juntaron y la muestra total resultante fue filtrada por una red de 64 mm de poro. La abundancia relativa de cada una de las especies de macrófitos fue estimada visualmente. La comunidad de macrófitos está constituida por Glyceria declinata, Eleocharis palustris y Carex sp. Fue realizado el test de U de Mann-Whitney para detectar las diferencias estadísticamente significativas entre las dos estaciones, para los parámetros ambientales y para las densidades de los crustáceos del zooplancton. Alona rectangula, Alona costata, Alona quadrangularis y Chydorus sphaericus se han observado únicamente en los muestreos obtenidos en el litoral. Daphnia longispina, Daphnia pulex, Ceriodaphnia pulchella, Bosmina longirostris, Diaphanosoma brachyurum, Copidodiaptomus numidicus y Acanthocyclops robustus se han encontrado en ambas estaciones, no obstante las densidades de Daphnia y Bosmina no presentan diferencias estadísticamente significativas entre la zona pelágica y la litoral. Las densidades de Ceriodaphnia, Diaphanosoma y C. numidicus fueran significativamente más elevadas en la zona pelágica, mientras que la densidad de A. robustus presentó un patrón opuesto

Research information management at ISCTE-IUL: the library’s role

ISCTE-IUL is a Portuguese public university with approximately 9000 students enrolled in undergraduate (46%) and postgraduate (54%) programs. The Repository of ISCTE-IUL is running since 2007 sustained by an Open Access Policy approved in the same year. In 2013, the current research information system – Ciência-IUL – became interoperable with the Repository bringing new challenges to SID, and allowing work collaboratively with other services to collect information, improve processes, and reduce duplication of efforts. SID seeks to support researchers throughout the research life cycle aiming to raise awareness of the academic community for Open Science best practices.info:eu-repo/semantics/publishedVersio

Importance of considering riparian vegetation requirements for the long-term efficiency of environmental flows in aquatic microhabitats

Environmental flows remain biased toward the traditional biological group of fish species. Consequently, these flows ignore the inter-annual flow variability that rules species with longer lifecycles and therefore disregard the long-term perspective of the riverine ecosystem. We analyzed the importance of considering riparian requirements for the long-term efficiency of environmental flows. For that analysis, we modeled the riparian vegetation development for a decade facing different environmental flows in two case studies. Next, we assessed the corresponding fish habitat availability of three common fish species in each of the resulting riparian landscape scenarios. Modeling results demonstrated that the environmental flows disregarding riparian vegetation requirements promoted riparian degradation, particularly vegetation encroachment. Such circumstance altered the hydraulic characteristics of the river channel where flow depths and velocities underwent local changes of up to 10 cm and 40 cm s1, respectively. Accordingly, after a decade of this flow regime, the available habitat area for the considered fish species experienced modifications of up to 110% when compared to the natural habitat. In turn, environmental flows regarding riparian vegetation requirements were able to maintain riparian vegetation near natural standards, thereby preserving the hydraulic characteristics of the river channel and sustaining the fish habitat close to the natural condition. As a result, fish habitat availability never changed more than 17% from the natural habitatinfo:eu-repo/semantics/publishedVersio

Arabidopsis Tetraspanins Are Confined to Discrete Expression Domains and Cell Types in Reproductive Tissues and Form Homo- and Heterodimers When Expressed in Yeast

Tetraspanins are evolutionary conserved transmembrane proteins present in all multicellular organisms. In animals, they are known to act as central organizers of membrane complexes and thought to facilitate diverse biological processes, such as cell proliferation, movement, adhesion, and fusion. The genome of Arabidopsis (Arabidopsis thaliana) encodes 17 members of the tetraspanin family; however, little is known about their functions in plant development. Here, we analyzed their phylogeny, protein topology, and domain structure and surveyed their expression and localization patterns in reproductive tissues. We show that, despite their low sequence identity with metazoan tetraspanins, plant tetraspanins display the typical structural topology and most signature features of tetraspanins in other multicellular organisms. Arabidopsis tetraspanins are expressed in diverse tissue domains or cell types in reproductive tissues, and some accumulate at the highest levels in response to pollination in the transmitting tract and stigma, male and female gametophytes and gametes. Arabidopsis tetraspanins are preferentially targeted to the plasma membrane, and they variously associate with specialized membrane domains, in a polarized fashion, to intercellular contacts or plasmodesmata. A membrane-based yeast (Saccharomyces cerevisiae) two-hybrid system established that tetraspanins can physically interact, forming homo- and heterodimer complexes. These results, together with a likely genetic redundancy, suggest that, similar to their metazoan counterparts, plant tetraspanins might be involved in facilitating intercellular communication, whose functions might be determined by the composition of tetraspanin complexes and their binding partners at the cell surface of specific cell types.Marie Curie International Reintegration grant: (no. IRG–256602), U.S. Department of Agriculture-Agricultural Research Service Current Research Information System grant: (5335–21000–030–00D), Fundação Ciência e Tecnologia Postdoctoral Fellowship: (SFRH/BPD/43584/2008), China Scholarship Council fellowship, UC-Berkeley College of Natural Resources SPUR

Diabetes hinders community-acquired pneumonia outcomes in hospitalized patients

This deposit is composed by the main article, and it hasn't any supplementary materials associated.This study aimed to estimate the prevalence of diabetes mellitus (DM) in hospitalized patients with community-acquired pneumonia (CAP) and its impact on hospital length of stay and in-hospital mortality.Pfizer Grant; Ernesto Roma Foundation grant: (FER2014/01)

Adenoid cystic carcinoma of the palpebral lobe of the lacrimal gland – case report and literature review

Epithelial tumors of the lacrimal gland are rare and usually develop in the orbital lobe. We report the exceedingly rare occurrence of a primary adenoid cystic carcinoma in the palpebral lobe of the lacrimal gland. A 26-year-old female was referred for evaluation of a gradually enlarging mass in the lateral upper eyelid, previously diagnosed as a chalazion. Computed tomography revealed a heterogeneous round lesion anterior to the orbital rim. Excisional biopsy was compatible with an adenoid cystic carcinoma. After excluding distant metastasis, and as the patient refused adjuvant radiotherapy, a second surgical procedure, with wide local excision, was indicated. Follow-up showed no recurrence. This case highlights the importance of performing a thorough clinical examination when diagnosing any lateral upper eyelid mass. A high index of suspicion for malignant tumors of the lacrimal gland should always be maintained, and a complete excision with histological analysis should be preferred whenever possible.info:eu-repo/semantics/publishedVersio

Anatomic Variotions of the Paranasal Sinuses

Devido à grande proximidade dos seios perinasais (SPN) com a órbita, sistema nervoso central e outras estruturas, o cirurgião deve estar bem familiarizado com a anatomia nasossinusal. Foi efectuado um estudo retrospectivo de 150 TC-SPN realizadas no nosso centro, durante 2015. 75 exames preencheram os critérios de inclusão. Foi realizada análise de variáveis demográficas e anatómicas. A idade média foi 48 anos. Observámos agenésia em 6% dos seios frontais e hipoplasia em 15%, defeito da lâmina papirácea (LP) em 11%, deiscência da artéria etmoidal anterior em 29%, célula Onodi em 16%, exposição do nervo óptico em 28% e exposição da artéria carótida interna em 19%, entre outras variáveis avaliadas. A altura média da lamela lateral foi maior no sexo masculino. O sexo feminino correlacionou-se com hipoplasia do seio maxilar e LP medializada. Uma avaliação cuidada da TC-SPN é essencial para alcançar melhores resultados cirúrgicos e menor taxa de complicações.info:eu-repo/semantics/publishedVersio

As Bibliotecas de Ensino Superior e a gestão de ciência

As Bibliotecas de Ensino Superior (BES) com sistemas CRIS e repositórios institucionais a seu cargo têm vindo a adaptar-se no sentido de responder às necessidades dos seus utilizadores. Passaram a incluir funções de gestão de ciência com benefícios para a comunidade científica e para a instituição. Com a proliferação de plataformas digitais dedicadas à disseminação e comunicação de ciência surgiu a necessidade de apoiar os docentes e investigadores na atualização da sua produção científica e proceder à validação de metadados, ajudando a manter a qualidade e veracidade da informação e contribuir para a simplificação e transparência dos processos de avaliação da instituição. Pretende-se, com este trabalho, descrever a atividade de uma Biblioteca de Ensino Superior com funções de gestão de ciência, enfatizando a interação CRIS-repositório institucional, o processo de validação de metadados e a atualização de perfil de investigador e respetivos currículos dos docentes e investigadores.info:eu-repo/semantics/publishedVersio

As Bibliotecas de Ensino Superior e a Gestão de Ciência

As Bibliotecas de Ensino Superior (BES) com sistemas CRIS e repositórios institucionais a seu cargo têm vindo a adaptar-se no sentido de responder às necessidades dos seus utilizadores. Passaram a incluir funções de gestão de ciência com benefícios para a comunidade científica e para a instituição. Com a proliferação de plataformas digitais dedicadas à disseminação e comunicação de ciência surgiu a necessidade de apoiar os docentes e investigadores na atualização da sua produção científica e proceder à validação de metadados, ajudando a manter a qualidade e veracidade da informação e contribuir para a simplificação e transparência dos processos de avaliação da instituição. Pretende-se, com este trabalho, descrever a atividade de uma Biblioteca de Ensino Superior com funções de gestão de ciência, enfatizando a interação CRIS-repositório institucional, o processo de validação de metadados e a atualização de perfil de investigador e respetivos currículos dos docentes e investigadores.info:eu-repo/semantics/publishedVersio