Disparate responses of above- and belowground properties to soil disturbance by an invasive mammal

Introduced mammalian herbivores can negatively affect ecosystem structure and function if they introduce a novel disturbance to an ecosystem. For example, belowground foraging herbivores that bioturbate the soil, may alter process rates and community composition in ecosystems that lack native belowground mammalian foragers. Wild boar (Sus scrofa) disturb the soil system and plant community via their rooting behavior in their native range. Given their size and the numbers in their populations, this disturbance can be significant in forested ecosystems. Recently, wild boar were introduced to Patagonian forests lacking native mammalian herbivores that forage belowground. To explore how introduced wild boar might alter forested ecosystems, we conducted a large-scale wild boar exclusion experiment in three different forest types (Austroducedrus chilensis forest, Nothofagus dombeyi forest, and shrublands). Wild boar presence altered plant composition and structure, reducing plant biomass 3.8-fold and decreasing both grass and herb cover relative to areas where wild boar were excluded. Decomposition rates and soil compaction also declined by 5% in areas where boar had access; however, rooting had no effect on soil nutrient stocks and cycling. Interestingly, there were no differences in wild boar impacts on different forest types. We found that after 3-years of exclusion, belowground foraging by wild boar had a larger impact on plant community structure and biomass than it did on soil nutrient processes.Fil: Barrios Garcia Moar, Maria Noelia. Administración de Parques Nacionales. Delegación Regional Patagonia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Classen, Aimee T.. University of Tennessee; Estados UnidosFil: Simberloff, Daniel. University of Tennessee; Estados Unido

Multi-level impacts of introduced wild boar on Patagonian ecosystems

Biological invasions are a pervasive global change that threatens biodiversity and the functioning of natural ecosystems, yet most studies focus on population impacts. Furthermore, the effects of invasive species on ecosystems are greatest when they introduce a novel disturbance. In this dissertation I reviewed the impact of wild boar (Sus scrofa) on native communities worldwide, identifying research needs. Wild boar overturns extensive areas of vegetation to feed on belowground plant parts, insects and fungi, thus altering native ecosystems integrity. By means of observational and experimental studies I addressed some of the research gaps on the impact of wild boar invasions on native communities and ecosystem functioning in Patagonia, Argentina. I evaluated the impact of wild boar on native plant community composition and structure, on soil properties, and on facilitating further invasion. I found that wild boar significantly alters aboveground ecosystem properties by reducing plant biomass and altering plant community composition. Furthermore, wild boar rooting disturbance significantly reduce litter decomposition rates, while soil properties were influenced by plant community more than by boar rooting disturbance. Lastly, I found that rooting disturbance rather than seed dispersal by wild boar facilitates further invasion by plants. Overall, these findings indicate that wild boar can have profound impacts on native ecosystems

Recidivism and neighborhood institutions: evidence from the rise of the evangelical church in Chile

Rehabilitating convicted criminals is challenging; indeed, an important share of them return to prison only a few years after their release. Thus, finding effective ways of encouraging crime desistance, particularly among young individuals, has become an important policy goal to reduce crime and incarceration rates. This paper provides causal evidence that the local institutions of the neighborhood that receives young individuals after prison matter. Specifically, we show that the opening of an Evangelical church reduces twelve-months re-incarceration rates among property crime offenders by more than 10 percentage points. This effect represents a drop of 16% in the probability of returning to prison for this group of individuals. We find smaller and less precise effects for more severe types of crime. We discuss two classes of mechanisms that could explain our results: religiosity and social support. We provide evidence that the social support provided by evangelical churches is an important driver of our findings. This suggests that non-religious local institutions could also play an important role in the rehabilitation of former inmates

Mismatch between media coverage and research on invasive species: The case of wild boar (Sus scrofa) in Argentina

Invasive species are a pervasive driver of global change with increasing media coverage. Media coverage and framing can influence both invasive species management and policies, as well as shed light on research needs. Using the wild boar (Sus scrofa) invasion in Argentina as a case study, we conducted a content analysis of media coverage and scientific articles. Specifically, we compared news and scientific articles based on their emphasis: ecological, economic, and health impacts and the overall perception portrayed in the news: “positive” when the articles emphasized benefits from wild boar and “negative” when focused on damage and/or loss. A literature search using Google news, Web of Science, Scielo, and Google Scholar yielded a total of 194 news articles and 37 research papers on wild boar in Argentina. More than half of the news articles focused on economic impacts of wild boar (56%) such as sport hunting, illegal hunting, and road accidents; while 27% focused on ecological impacts, and 10% on health impacts. In contrast, the majority of the scientific articles (65%) focused on ecological impacts of wild boar on native species and ecosystems; while 21% were related to health impacts and only 8.3% of scientific articles were related to economic impacts. This mismatch between media and science reveals a disconnection between social and scientific interests in wild boar and their management in Argentina, and it provides insights to research needs and prevention of management conflicts. Additionally, we found that 66.8% of news articles focused on “negative” aspects of wild boar, while 33.2% of news articles portrayed “positive” perceptions. This finding is very important because the management of invasive species such as wild boar usually requires lethal techniques, and the success of the programs depend on favorable social and political support. Good science communication is therefore key to helping scientists and managers perform more effective management actions.Fil: Ballari, Sebastián A.. Administración de Parques Nacionales. Parque Nacional "Nahuel Huapi"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Barrios Garcia Moar, Maria Noelia. Administración de Parques Nacionales. Parque Nacional "Nahuel Huapi"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentin

La importancia de la escolarización temprana y su influencia en el desarrollo de la habilidad lingüística en niños.

La escolarización temprana de niños de 0 a 2 años ha desempeñado un importante papel debido a que los diferentes planes de estudio y las competencias a adquirir por los niños que acuden a un centro educativo, mejoran la adquisición de diversas habilidades del desarrollo, especialmente las referentes al lenguaje y la comunicación. Por ello, este estudio tiene como objetivo principal comprobar la importancia de este tipo de escolarización y observar su efecto en el lenguaje de 40 niños durante dos momentos de evaluación, los 12 y los 15 meses de edad, a través de la comparación de dos grupos; uno experimental y otro control. El diseño del estudio es longitudinal-transversal, de corte cuasi-experimental, en donde se emplea un análisis estadístico no paramétrico de F de Fisher para comparar las medias obtenidas por ambos grupos. Los resultados muestran como los niños que están escolarizados presentan unas medias mucho mayores que en los niños no escolarizados, con un nivel de significación adecuado en los análisis estadísticos que se llevaron a cabo para comprobar ambos grupos. A modo de conclusión, es posible afirmar que la escolarización temprana, mejore y potencie las habilidades lingüísticas en los 12 y 15 meses de edad.The early schooling of children from 0 to 2 years old has played an important role because the different curricula and the competences to acquire by the children who attend an educational center, improve the acquisition of diverse development skills, especially the referents to language and communication. Therefore, this study has as main objective to verify the importance of this type of schooling and to observe its effect in the language of 40 children during two evaluation moments, 12 and 15 months of age, through the comparison of two groups; one experimental and another control. The design of the study is longitudinal-transversal, of quasi-experimental cut, where a nonparametric statistical analysis of Fisher's F is used to compare the means obtained by both groups. The results show that children who are enrolled in school have a much higher average than in out-of-school children, with an adequate level of significance in the statistical analyzes that were carried out to check both groups. By way of conclusion, it is possible to affirm that early schooling improves and enhances language skills at 12 and 15 months of age

A practice-based randomized controlled trial to improve medication adherence among Latinos with hypertension: study protocol for a randomized controlled trial

BACKGROUND: Latinos experience disproportionately higher rates of uncontrolled hypertension as compared to Blacks and Whites. While poor adherence is a major contributor to disparities in blood pressure control, data in Latino patients are scant. More importantly, translation of interventions to improve medication adherence in community-based primary care practices, where the majority of Latino patients receive their care is non-existent. METHODS: Using a randomized controlled design, this study evaluates the effectiveness of a culturally tailored, practice-based intervention compared to usual care on medication adherence, among 148 Latino patients with uncontrolled hypertension who are non-adherent to their antihypertensive medications. Bilingual medical assistants trained as Health Coaches deliver the intervention using an electronic medical record system-embedded adherence script. Patients randomized to the intervention group receive patient-centered counseling with a Health Coach to develop individualized self-monitoring strategies to overcome barriers and improve adherence behaviors. Health Coach sessions are held biweekly for the first 3 months (6 sessions total) and then monthly for the remaining 3 months (3 sessions total). Patients randomized to the usual care group receive standard hypertension treatment recommendations as determined by their primary care providers. The primary outcome is the rate of medication adherence at 6 months. The secondary outcome is reduction in systolic and diastolic blood pressure at 6 months. DISCUSSION: If successful, findings from this study will provide salient information on the translation of culturally tailored, evidence-based interventions targeted at medication adherence and blood pressure control into practice-based settings for this high-risk population. TRIAL REGISTRATION: NCT01643473 on 16 July 2012

Modelos de desarrollo territorial y conflictos en San Carlos de Bariloche y El Bolsón

Para comenzar podríamos establecer como premisa que el espacio urbano se constituye como el resultado dinámico de la relación dialéctica entre la lógica de estructuración del sistema social y las características ecosistémicas de las áreas donde el proceso se desarrolla. De este modo, la competencia entre los usos del suelo, los efectos en el ambiente como resultados de los ciclos del proceso de producción y las posibilidades de realización del capital determina la emergencia de conflictos por el acceso, mantenimiento o conservación de la tierra...Fil: Barrios Garcia Moar, Gonzalo Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Universidad Nacional de Río Negro. Sede Andina. Centro de Estudios en Ciencia, Tecnología, Cultura y Desarrollo; Argentina. Universidad Nacional de Quilmes. Centro de Investigaciones sobre Economía y Sociedad en la Argentina Contemporánea; Argentin

Cardiovascular Risk in Patients with Dyslipidemia and Their Degree of Control as Perceived by Primary Care Physicians in a Survey—TERESA-Opinion Study

Objective: The aim of this study was to evaluate, through a survey, the opinion of primary care (PC) physicians on the magnitude of dyslipidemia and its degree of control in their clinical practice. Materials and methods: An ecological study was carried out, in which the physicians were invited to participate by means of an online letter. Data were collected at a single timepoint and were based only on the experience, knowledge, and routine clinical practice of the participating physician. Results: A total of 300 physicians answered the questionnaire and estimated the prevalence of dyslipidemia between 2% and 80%. They estimated that 23.5% of their patients were high-risk, 18.2% were very high-risk, and 14.4% had recurrent events in the last 2 years. The PC physicians considered that 61.5% of their patients achieved the targets set. The participants fixed the presence of side-effects to statins at 14%. The statin that was considered safest with regard to side-effects was rosuvastatin (69%). Conclusions: PC physicians in Spain perceive that the CVR of their patients is high. This, together with the overestimation of the degree of control of LDL-C, could justify the inertia in the treatment of lipids. Moreover, they perceive that one-sixth of the patients treated with statins have side-effects

Echinoderms from the Gulf of Venezuela, north-western coast of Venezuela

Echinoderms are a major group of marine invertebrates that often play integral roles within the marine ecosystem. Studies about their occurrence, abundance, and distribution in Venezuela are focused in the central-eastern coasts; hence the aim of this study is to describe the echinoderm community in the north-western coast of the Gulf of Venezuela. Samples were collected from three sites in the Venezuelan Guajira Peninsula (Castilletes, Porshoure, and Kazuzain) where patchy coral reefs and seagrass meadows are abundant. According to the substrate, two methods were performed using quantitative (1 m² quadrates), and qualitative free-diving observations. All organisms were counted and identified to the lowest possible taxonomic level; finally, diversity (Shannon diversity index), richness (number of species), and dominance in the different sampled substrates were recorded. The updated list of echinoderms of the Gulf of Venezuela reported in this research, includes 20 genera, 15 families, 10 orders, four classes, and 28 species. The richest class was Ophiuroidea, with 18 species, followed by Asteroidea, Echinoidea and Holothuroidea, with three species each. Castilletes was the sampling site with the higher number of species (18 species), followed by Porshoure (15 species), and lastly Kazuzain (12 species). Our observations indicate that the number of species and abundance were higher when found in coral reefs (21 species, 80.69% of the total collected individuals) in contrast to the species found in seagrass beds (16 species, 19.31% of the total of individuals collected). This updated list of echinoderms represents 11.54% of the total diversity of the phylum in the marine areas from the coast of Venezuela; it is suggested that this percentage is greatly influenced by the differences of habitats and substrates alongside the north-western coast in the Gulf of Venezuela