Rapid speciation in a newly opened postglacial marine environment, the Baltic Sea

<p>Abstract</p> <p>Background</p> <p>Theory predicts that speciation can be quite rapid. Previous examples comprise a wide range of organisms such as sockeye salmon, polyploid hybrid plants, fruit flies and cichlid fishes. However, few studies have shown natural examples of rapid evolution giving rise to new species in marine environments.</p> <p>Results</p> <p>Using microsatellite markers, we show the evolution of a new species of brown macroalga (<it>Fucus radicans</it>) in the Baltic Sea in the last 400 years, well after the formation of this brackish water body ~8–10 thousand years ago. Sympatric individuals of <it>F. radicans </it>and <it>F. vesiculosus </it>(bladder wrack) show significant reproductive isolation. <it>Fucus radicans</it>, which is endemic to the Baltic, is most closely related to Baltic Sea <it>F. vesiculosus </it>among north Atlantic populations, supporting the hypothesis of a recent divergence. <it>Fucus radicans </it>exhibits considerable clonal reproduction, probably induced by the extreme conditions of the Baltic. This reproductive mode is likely to have facilitated the rapid foundation of the new taxon.</p> <p>Conclusion</p> <p>This study represents an unparalleled example of rapid speciation in a species-poor open marine ecosystem and highlights the importance of increasing our understanding on the role of these habitats in species formation. This observation also challenges presumptions that rapid speciation takes place only in hybrid plants or in relatively confined geographical places such as postglacial or crater lakes, oceanic islands or rivers.</p

Design Science in Action: Developing a Framework for Introducing IT Systems into Operational Practice

The paper presents an example of using design science research for solving a problem arising from local practice. The problem concerns adoption of new technology. The paper aims to integrate existing approaches and theories of technology acceptance and change management in a framework useful for practical purposes. It is based on the idea that the successful introduction of an IT-system requires a number of conditions to be satisfied as well as means for bringing about the satisfaction of these conditions. The level of satisfaction of the conditions can be measured by a set of parameters, such as the level of strategic, tactical and operational understanding of the system by the users. Means include various types of actions, tools and strategies. The introduction process is steered via periodically measuring the parameters, and applying means that help to change the level of satisfaction of the conditions

Many Labs 5:Testing pre-data collection peer review as an intervention to increase replicability

Replication studies in psychological science sometimes fail to reproduce prior findings. If these studies use methods that are unfaithful to the original study or ineffective in eliciting the phenomenon of interest, then a failure to replicate may be a failure of the protocol rather than a challenge to the original finding. Formal pre-data-collection peer review by experts may address shortcomings and increase replicability rates. We selected 10 replication studies from the Reproducibility Project: Psychology (RP:P; Open Science Collaboration, 2015) for which the original authors had expressed concerns about the replication designs before data collection; only one of these studies had yielded a statistically significant effect (p < .05). Commenters suggested that lack of adherence to expert review and low-powered tests were the reasons that most of these RP:P studies failed to replicate the original effects. We revised the replication protocols and received formal peer review prior to conducting new replication studies. We administered the RP:P and revised protocols in multiple laboratories (median number of laboratories per original study = 6.5, range = 3?9; median total sample = 1,279.5, range = 276?3,512) for high-powered tests of each original finding with both protocols. Overall, following the preregistered analysis plan, we found that the revised protocols produced effect sizes similar to those of the RP:P protocols (?r = .002 or .014, depending on analytic approach). The median effect size for the revised protocols (r = .05) was similar to that of the RP:P protocols (r = .04) and the original RP:P replications (r = .11), and smaller than that of the original studies (r = .37). Analysis of the cumulative evidence across the original studies and the corresponding three replication attempts provided very precise estimates of the 10 tested effects and indicated that their effect sizes (median r = .07, range = .00?.15) were 78% smaller, on average, than the original effect sizes (median r = .37, range = .19?.50)

Sjuksköterskans upplevelser av att vårda i en våldsam arbetsmiljö inom akutsjukvården : - en litteraturstudie

Sammanfattning: Bakgrund: Sjuksköterskor inom akutsjukvården har en utsatt position och löper en större risk att utsättas för våld. Våldsproblematiken är ett växande problem världen över och riskfaktorerna till att våldsincidenter uppstår är många. Sjuksköterskor inom akutsjukvården befinner sig i ett komplext beslutsfattande position där risken av att utsättas för våld är större. Syfte: Syftet var att beskriva hur våld inom akutsjukvården påverkar sjuksköterskans omvårdnadsarbete. Metod: Litteraturstudien är baserad på 12 vetenskapliga artiklar av kvalitativ karaktär som är publicerade mellan 2009 – 2020. Artiklar söktes i databaserna Cinahl och PubMed. En induktiv ansats har använts och analysering gjordes utefter Fribergs femstegsanalys. Resultat: Fynden som har identifierats har grupperats och genererat fyra subkategorier; ”att drabbas av fysiska begränsningar”, ”att uppleva emotionella konsekvenser”, ”att uppleva konsekvenser i det patientnära arbetet” samt ”att uppleva bristande teamsamverkan”. Subkategorierna har bildat två kategorier; ”Sjuksköterskans hälsa” och ”Sjuksköterskans arbete”. Slutsats: Litteraturstudien resulterade i att våldet inom akutsjukvården skapade både yrkesmässiga och privata konsekvenser hos sjuksköterskorna som på olika sätt påverkade arbetskvalité och patientsäkerhet och som även skapade sämre förutsättningar för ett personcentrerat arbete.  Nyckelord: Våld, konsekvenser, omvårdnad, akutmottagning, kvalitati

Gender Differences in the Scandinavian Cystic Fibrosis Population

Aims: To explore whether gender differences in the Scandinavian Cystic Fibrosis (CF) patients exist in the areas of key clinical parameters, complications, and medication. Methods: Cross-sectional data on 890 (416 female) pancreatic insufficient CF patients were evaluated regarding chronic infection, body mass index, lung function, medication, and diabetes, as well as data of Pseudomonas infection status, antibiotic treatment and hospitalization from 1-year follow-up. Results: We found no differences in lung function, body mass index, or frequency of diabetes. The adult group consisted of more males than females (208:168). We found no significant difference in prevalence of chronic Pseudomonas aeruginosa infection, but during the follow-up the incidence of new chronic infection was higher in adult females (10/33 vs. 4/56). Females had higher prevalence of Burkholderia infection (21/416 vs. 11/474). Adult females had more days on intravenous antibiotics (median 39 vs. 26 days/year), and days in hospital (median 2 vs. 0 days/year). More adult females received inhaled and oral steroids. In the pediatric cohort, females were treated more often with macrolides as an anti-inflammatory agent. Conclusion: We found no gender difference in key clinical parameters in our CF population. However, our study showed a higher risk of Pseudomonas and Burkholderia infection among the female patients. Additionally, we found that female patients require more intensified treatment regarding antibiotics, macrolides, steroids and days of hospitalization, indicating a true female disadvantage even with modern aggressive treatment. The finding of more males than females in the adult population suggesting a male advantage, warrants a mortality study. Pediatr Pulmonol. 2010; 45:959-965. (C) 2010 Wiley-Liss, Inc