bluuebunny/crossref_metadata_2025_split huggingface dataset:
Environmental filtering limits functional diversity during succession in a seasonally wet tropical secondary forest
Authors: Craven Dylan , Hall Jefferson S. , Berlyn Graeme P. , Ashton Mark S. , van Breugel Michiel 
Published: March 2018

AbstractAimsSuccessional shifts in biodiversity are key drivers of the recovery of ecosystem functioning following disturbances. Identifying mechanisms that enhance or limit the ecological processes that drive these successional patterns can strengthen efforts to manage biodiversity‐dependent ecosystem functions across human‐dominated landscapes. Here, we examine successional patterns of multiple aspects of functional diversity in a seasonally wet tropical secondary forest and changes in the strength of environmental filtering during secondary succession.LocationCentral Panama.MethodsWe calculate functional richness (FRic) and dispersion (FDis) across a secondary forest chronosequence (n = 51 0.1‐ha plots) using nine functional traits related to resource acquisition and conservation. Functional diversity indices are calculated using all traits and each trait individually. Using a null model approach, we test the effects of environmental filtering during secondary succession.ResultsFRic and FDis exhibit saturating relationships with time since abandonment, reaching their maxima after 7 and 10 years, respectively. Overall, we find evidence that environmental filtering reduces FDis to a greater extent than FRic and that the strength of environmental filtering on both FDis and FRic increases during succession. The impacts of environmental filtering on functional diversity of individual traits are consistent; the mean standardized effect sizes (SES) of FRic and FDis of at least six of the nine studied traits are lower than expected. Notably, environmental filtering on FRic and FDis of particular traits associated with light and nutrient acquisition increases significantly along the secondary forest chronosequence, suggesting that functional convergence of multiple resource acquisition strategies strengthens in parallel.ConclusionsWe find that successional shifts in environmental conditions limit trait variation in seasonally wet tropical secondary forests. Our results suggest that the increasing strength of environmental filtering shifts abundance of trait combinations towards a subset of functionally convergent species that compete for light and nutrients in similar ways.
Apparent Digestibility of Minerals from Several Ingredients for Tambaqui, Colossoma macropomum, Juveniles
Authors: Araújo Janaína G. , Nebo Caroline , Pádua Delma M. C. , Souto Cristielle N. , Guimarães Igo G. 
Published: March 2018

AbstractBased on the importance of tambaqui, Colossoma macropomum, for Latin American aquaculture and the digestibility of minerals for the production of sustainable aquafeeds, we designed a series of trials to determine the apparent digestibility coefficients (ADCs) of phosphorus, calcium, magnesium, manganese, and zinc from six protein sources: soybean meal (SBM), corn gluten meal 60 (CGM60), cottonseed meal 40, fishmeal (FM), poultry byproduct meal (PBM), and meat and bone meal (MBM); four cereal grain products: corn, wheat middlings, broken rice (BR), and rice bran (RB); and dicalcium phosphate (DCP). Considerable variation in the ADCs of minerals was observed among the feed ingredients. In general, CGM60, PBM, and RB tended to show the highest ADC values, while SBM, MBM, DCP, and BR showed the lowest ADC values. ADC‐P was markedly lower in animal protein sources and the phosphate source (DCP), while high P digestibility was observed for plant protein sources and cereal grain products. Interestingly, tambaqui seems to be able to digest and absorb minerals from plant ingredients more efficiently than animal proteins and DCP. In light of the correlation between nutrient levels and the ADCs of minerals, physiological mechanisms that regulate mineral uptake, and the nutritional ecology of the species, we hypothesize that tambaqui are able to digest minerals from plant proteins with high efficiency.
Effect of continuous and alternating episodes of starvation on behavior and reproduction in the red flour beetle
Authors: Gilad T. , Koren R. , Moalem Y. , Subach A. , Scharf I. 
Published: March 2018

AbstractStress in general and starvation in particular have various and often contrasting effects on different traits. Previous starvation studies have usually focused on one or two response variables and comprised one starvation treatment versus a control. Here, we used the red flour beetle to study the effects of (1) a starvation gradient of 0–4 days, and (2) alternating starvation over 3 days on multiple response variables: movement activity, food patch discovery, latency to emerge from shelter, body mass, water content, and offspring number and mass. Starvation led to a decline in body mass and water content, as expected. Beetles also became less active, less explorative and less bold, which is in contradiction to the findings from some previous work. Both the number of offspring and their mass at mid‐development diminished, suggesting a non‐adaptive parental effect, from the offspring perspective, due to parental starvation. Recuperation episodes negated starvation effects in most cases, with three exceptions: male body mass, water content and movement activity. The link between starvation duration and the tested response variables was inconsistent between sexes, with movement activity the most prominent example. Females were generally larger and although the rate of their mass loss was steeper, they were more starvation tolerant than males, as evident in their ability to take better advantage of the recuperation episodes. Our results indicate that starvation has a differential effect on the response variables according to sex.
Shifts in gut microbiota composition in an APP/PSS1 transgenic mouse model of Alzheimer's disease during lifespan
Authors: Bäuerl C. , Collado M.C. , Diaz Cuevas A. , Viña J. , Pérez Martínez G. 
Published: March 2018

Abstract
Alzheimer's disease (AD) is the most common form of dementia and one of the major causes of disability and dependency in older people. Accumulating evidences link gut microbiota with different diseases and its relationship with neurodegenerative diseases is becoming most intriguing. This study was aimed to compare the gut microbiota of transgenic APP/PS1 (TG) mice, a well-established deterministic mouse model of AD, with their C57BL/6 wild-type (WT) littermates. Faecal samples were collected from 3-, 6- and 24-month-old mice and analysed by pyrosequencing of the V1–V3 region of the bacterial 16S rRNA genes. Bacterial profiles were similar in all young mice (3 months old), and started to diverge so that 6-month-old WT and TG mice had different and more diverse microbiota. During ageing, Turicibacteriaceae (typical mice bacterial group) and Rikenellaceae increased in all groups, although total Bacteroidetes remained stable. TG mice were characterized by an increase in Proteobacteria after 6 months, particularly the genus Sutterella (Betaproteobacteria), interestingly also increased in autism disorder. Also, the inflammation related family Erysipelotrichaceae was more abundant in TG mice at 24 months compared to wild-type control. In summary, AD pathology in mice shifts the gut microbiota towards profiles that share features with autism and inflammatory disorders.

Significance and Impact of the Study
Alzheimer's disease is a neurodegenerative disease and neuroinflammation in the central nervous system appears to have a pivotal role. Using the transgenic APP/PS1 (TG) mouse model, we successfully characterized how AD pathology shifted gut microbiota composition during ageing towards an inflammation related bacterial profile related to Proteobacteria and Erysipelotrichaceae and suggest that these changes could contribute to disease progression and severity. Microbiota-targeted interventions could therefore represent a strategy to postpone disease symptoms.
Investigating deception in second language speakers: Interviewee and assessor perspectives
Authors: Akehurst Lucy , Arnhold Alina , Figueiredo Isabel , Turtle Sarah , Leach Amy‐May 
Published: March 2018

PurposeThe first of two experiments investigated the effect that speaking in a non‐native language has on interviewees’ perceptions of their interview experience. A second experiment investigated evaluators’ perceptions of the credibility of interviewees who spoke in their native or non‐native language.MethodFor the first experiment, 52 participants told the truth or lied about their identity during a mock border control interview. All of the participants were interviewed in English, for half of the sample this was their native language, and for the other half of the sample English was not their native tongue. Post‐interview, all participants completed a self‐report questionnaire relating to their perceptions of their interview experience. For the second experiment, 128 participants evaluated the credibility of interviewees from the first experiment. The modality of presentation of interview clips was varied and included ‘Visual and Audio’, ‘Visual Only’, ‘Audio Only’, and ‘Transcript Only’.ResultsNon‐native speakers were more likely than native speakers to report being nervous and cognitively challenged during their interviews and were more likely to monitor their own behaviour. Overall, evaluators were better able to distinguish between truth tellers and liars who were speaking in their native language than between truth tellers and liars who were non‐native speakers. Relative to native speakers, there was a smaller truth bias for evaluations of non‐native speakers. When evaluators were considering the non‐native speakers, they achieved higher discrimination accuracy when they were exposed to ‘Visual Only’ or ‘Transcript Only’ presentations than when they were shown the ‘Visual and Audio’ or ‘Audio Only’ interview clips.ConclusionsSelf‐reported experiences of a mock border control interview differed dependent on whether interviewees were speaking in their native or non‐native language. Discrimination accuracy was better for native speakers than it was for non‐native speakers and was at its worst when evaluators heard the accents of the non‐native speakers.
Relations among psychopathy, moral competence, and moral intuitions in student and community samples
Authors: Gay Jeremy G. , Vitacco Michael J. , Hackney Amy , Beussink Courtney , Lilienfeld Scott O. 
Published: March 2018

PurposeThe nature of moral decision‐making in those with pronounced psychopathic traits has been passionately debated, both in scientific literature and in the public policy arena. Research investigating the relationship between psychopathic traits and moral decision‐making capacities has been largely inconclusive. However, recent research suggests individuals with elevated psychopathic traits may exhibit abnormal moral intuitions regarding the prevention of harm (Harm) and promotion of fairness (Fairness). Although moral intuitions are widely assumed to be related to moral judgement, no research has simultaneously examined the relations among psychopathy, moral intuition, and moral judgement.MethodsWe hypothesized that psychopathic traits would not be directly related to moral judgement outcomes but would be indirectly related by way of Harm and Fairness moral intuitions. To test these hypotheses, 121 undergraduate students and 205 community residents, across two studies, completed measures of psychopathy, moral intuitions, and moral judgement.ResultsHigher psychopathy scores were associated with decreased concerns about preventing harm and promoting justice across both samples. Individuals higher in psychopathic traits did not evidence deficits in moral judgement.ConclusionsOur findings indicate that, although individuals with elevated psychopathic traits may organize their sense of morality differently, they can accurately discern moral from immoral decisions.
Affective encounters: enchantment and the possibility of reading for pleasure
Authors: Burnett Cathy , Merchant Guy 
Published: March 2018

AbstractDiscourses of reading for pleasure have seldom addressed the multiple and complex digital media practices of children and young people or the changing nature of literacy. This article explores the affective encounters that are generated in the relations between readers, digital texts and things by applying Bennett's notion of enchantment. Using examples of everyday literacies, it considers the diversity of ways in which such encounters manifest, noting how such practices are located within intersecting continua ranging from immersive to lightweight, sustained to ephemeral, individual to collective, serious to flippant and from momentary hilarity to deep engagement. The article outlines some implications of enchantment for thinking about reading for pleasure in education focusing on the importance of potentiality and relationality.
How linguistically‐informed are phonics programmes?
Authors: Beard Roger , Brooks Greg , Ampaw‐Farr Jaz 
Published: March 2018

AbstractSuccessive UK government policies have strengthened the phonics element of the National Curriculum for English in England. The policies have included inviting publishers to submit completed self‐assessments of their systematic phonics programmes. The self‐assessment criteria focus on what is deemed to be ‘high‐quality provision’, as defined in the Independent Review of the Teaching of Early Reading chaired by Jim Rose. The programmes whose self‐assessments were judged to be accurate by small panels of independent evaluators have been subsequently listed on a central government website. The authors have acted as independent evaluators in this process and, between them, had the opportunity to inspect the content of over 100 phonics programmes. They have noted that many of these programmes (most of which did not meet the Rose criteria) contained numerous linguistic inaccuracies, particularly in relation to the English spelling system and its grapheme‐phoneme correspondences. The existence, number and range of these errors jeopardise policy implementation and National Curriculum delivery and pose risks for the quality of teaching and learning. The article suggests some reasons for these findings in related published debates and in policy documents, and that phonics programmes need to be more linguistically‐informed. The article concludes with some implications for practice.
Hapke mixture modeling applied to VNIR spectra of mafic mineral mixtures and shergottites: Implications for quantitative analysis of satellite data
Authors: Harris Jennifer K. , M. Grindrod Peter 
Published: March 2018

AbstractThe mineralogy of Mars is well understood on a qualitative level at a global scale due to satellite data. Quantitative analysis of visible and near‐infrared (VNIR) satellite data is a desirable but nontrivial task, due partly to the nonlinearity of VNIR reflectance spectra from the mineral mixtures of the Martian surface. In this study, we investigated the use of the Hapke radiative transfer model to generate linearly mixed single scattering albedo data from nonlinearly mixed VNIR reflectance data and then quantitatively analyzed them using the linear spectral mixture model. Simplifications to the Hapke equation were tested accounting for variables that would be unknown when using satellite data. Mineral mixture spectra from the RELAB spectral library were degraded to test the robustness of the unmixing technique in the face of data that mimic some of the complexities of satellite spectral data collected at Mars. A final test was performed on spectra from shergottite meteorites to assess the technique against real Martian mineral mixtures. The simplified Hapke routine produced robust abundance estimates within 5–10% accuracy when applied to laboratory standard spectra from the synthetic mixtures of igneous minerals in agreement with previous studies. The results of tests involving degraded data to mimic the low spectral contrast of the Martian surface and the lack of a priori knowledge of the constituent mineral spectral endmembers, however, were less encouraging, with errors in abundance estimation greater than 25%. These results cast doubt on the utility of Hapke unmixing for the quantitative analysis of VNIR data of the surface of Mars.
Iron meteorite bulk densities determined via 3‐D laser imaging
Authors: Fry C. , Samson C. , McCausland P. J. A. , Ralchenko M. , McLeod T. K. 
Published: March 2018

AbstractThis study tested the feasibility of using 3‐D laser imaging to measure the bulk density of iron meteorites. 3‐D laser imaging is a technique in which a 3‐D model of an object is built after aligning and merging individual detailed images of its surface. Assuming that the mass of the object is known, the volume of the model is calculated by software and an estimate of bulk density can be obtained by dividing mass by volume. The 3‐D laser imaging technique was used to determine the density of 46 fragments from 11 different iron meteorites. The technique proved to be robust and was applied successfully to study samples ranging close to four orders of magnitude in mass (8 g to 156 kg) and exhibiting a variety of surface textures (e.g., cracks, regmaglypts), reflectivities (e.g., polished surfaces, fusion crust, rust), and morphologies (e.g., sharp angular edges, shrapnel tendrils). Three metrics were considered to estimate the error associated with density measurements: the range accuracy of the laser camera, image alignment error, and inter‐operator variability during model building. Inter‐operator variability was the largest source of error and was highest when assembling models of samples which either lacked distinctive features or were very complex in shape. Excluding two anomalous Zagora samples where silicate inclusions might have lowered density, the densities measured using 3‐D laser imaging ranged from 6.98 to 7.93 g cm−3, consistent with previous studies. There is overlap between bulk density and iron meteorite class, and therefore bulk density cannot be used in isolation as a classification criterion. It is a good indicator, however, of weathering effects and of the potential presence of low‐density inclusions.
Fine‐grained volatile components ubiquitous in solar nebula: Corroboration from scoriaceous cosmic spherules
Authors: Rudraswami N. G. , Fernandes D. , Naik A. K. , Shyam Prasad M. , Taylor S. 
Published: March 2018

AbstractThe scoriaceous cosmic spherules (CSs) that make up to a few percent (for sizes >150 μm size) of total micrometeorite flux are ubiquitous and have remained enigmatic. The present work provides in‐depth study of 81 scoriaceous CSs, from observed ~4000 CSs, collected from Antarctica (South Pole water well) and deep‐sea sediments (Indian Ocean) that will allow us to analyze the nature of these particles. The fine‐grained texture and the chemical composition of scoriaceous particles suggest that they are formed from matrix materials that are enriched in volatiles. The volatile components such as water, sulfide, Na, K, etc. have vanished due to partial evaporation and degassing during Earth's atmospheric entry leaving behind the vesicular features, yet largely preserving the elemental composition. The elemental ratios (Ca/Si, Mg/Si, Al/Si, Fe/Si, and Ni/Si) of interplanetary dust particles (IDPs) are compatible with the scoriaceous CSs, which in turn are indistinguishable from the matrices of CI and CM chondrites signifying similarities in the nature of the sources. Furthermore, the texture of cometary particles bears resemblance to the texture of the scoriaceous particles. The compilation of petrographic texture, chemical, and trace element composition of scoriaceous CSs presents a strong case for matrix components from hydrated and volatile‐rich bodies, such as CI and CM chondrites, rather than chondrules. We conclude that the fine‐grained scoriaceous CSs, the matrix materials of hydrated chondrites, IDPs, and cometary particles that overlap compositionally were widespread, indicating a dominant component in the early solar nebula.
Alteration of CAIs as recorded by 36S/34S as a function of 35Cl/34S
Authors: Leya I. , Masarik J. , Lin Y. 
Published: March 2018

AbstractUsing new model calculations, we study the production of chlorine and sulfur isotopes in different irradiation scenarios. We demonstrate that irradiation during meteorite transit from the asteroid belt to Earth has a negligible influence on the sulfur isotopic composition. We analyzed five different physical assemblages: carbonaceous chondrites, carbonaceous chondrites covered with water ice, carbonaceous chondrites covered with water ice that contains silicates and chlorine, precursor CAIs, and water ice that contains chlorine. For each of these five we ran simulations in which they were irradiated by galactic cosmic rays or solar energetic particles. We found that for producing sufficient amounts of 36Cl, the required GCR and SEP flux densities must have been either unreasonably high on absolute terms or must had been high relatively late after the formation of the solar system. This finding casts doubt on the interpretation of the correlation lines in the diagram 36S/34S and 35Cl/34S as isochrons. Alternatively, the correlation may be interpreted as mixing between water that contains chlorine that has been irradiated (likely as ice) either by GCR or SEP particles and sulfur (without any chlorine) with solar isotopic composition. Using this model we can explain the correlation as mixing between components, one of which was exposed to energetic particles; the conditions of this irradiation are not unrealistic.
Effectiveness of the national food supplementary program on children growth and nutritional status in Iran
Authors: Ghodsi Delaram , Omidvar Nasrin , Rashidian Arash , Eini‐Zinab Hassan , Raghfar Hossein , Aghayan Maryam 
Published: March 2018

AbstractThis study aimed to evaluate the effectiveness of the national food distribution program on the growth and nutritional status of malnourished or growth‐retarded children in 2 provinces of Iran. A quasi‐experimental design was used for the effectiveness evaluation. Qualitative data were gathered to explain the results. An intervention group consisted of 362 children aged 6–72 months who were under coverage of the program. These children received monthly food as foodstuff, food vouchers, or cash. A comparison group included 409 children aged 6–72 months who were selected from those covered by the Primary Health Care system. Children anthropometric indices were measured at the baseline and also 6 months later. Twelve focus group discussions were held with mothers who had at least 1 child under the coverage of the program. At the end of the study, the mean weight‐for‐age Z scores, height‐for‐age Z scores, and weight‐for‐height Z scores increased compared with the baselines in both groups (p < .001). The differences between 2 groups in weight‐for‐age Z scores, height‐for‐age Z scores, and weight‐for‐height Z scores were not significant at the end of the study (p = .62, p = .91, and p = .94, respectively). According to the mothers' reports, factors affected the program outcome, that is, children anthropometric indices were low income, intrahousehold food sharing, irregular distribution, quantity and quality of the distributed food, and insufficient training. Providing foods for the malnourished children living in low‐income families helped to prevent a worsening of their nutritional status; however, it has not been effective in solving the problem, probably due to the weak implementation and lack of empowerment strategies.