Latitudinal patterns of forest ecosystem stability across spatial scales as affected by biodiversity and environmental heterogeneity.

Our planet is facing a variety of serious threats from climate change that are unfolding unevenly across the globe. Uncovering the spatial patterns of ecosystem stability is important for predicting the responses of ecological processes and biodiversity patterns to climate change. However, the understanding of the latitudinal pattern of ecosystem stability across scales and of the underlying ecological drivers is still very limited. Accordingly, this study examines the latitudinal patterns of ecosystem stability at the local and regional spatial scale using a natural assembly of forest metacommunities that are distributed over a large temperate forest region, considering a range of potential environmental drivers. We found that the stability of regional communities (regional stability) and asynchronous dynamics among local communities (spatial asynchrony) both decreased with increasing latitude, whereas the stability of local communities (local stability) did not. We tested a series of hypotheses that potentially drive the spatial patterns of ecosystem stability, and found that although the ecological drivers of biodiversity, climatic history, resource conditions, climatic stability, and environmental heterogeneity varied with latitude, latitudinal patterns of ecosystem stability at multiple scales were affected by biodiversity and environmental heterogeneity. In particular, α diversity is positively associated with local stability, while ß diversity is positively associated with spatial asynchrony, although both relationships are weak. Our study provides the first evidence that latitudinal patterns of the temporal stability of naturally assembled forest metacommunities across scales are driven by biodiversity and environmental heterogeneity. Our findings suggest that the preservation of plant biodiversity within and between forest communities and the maintenance of heterogeneous landscapes can be crucial to buffer forest ecosystems at higher latitudes from the faster and more intense negative impacts of climate change in the future.

Response trait diversity and species asynchrony underlie the diversity-stability relationship in Romanian bird communities.

Biodiversity-stability relationships have frequently been studied in ecology, with the recent integration of traits to explain community stability over time. Classical theory underlying the biodiversity-stability relationship posits that different species' responses to the environment should stabilise community-level properties (e.g. biomass or abundance) through compensatory dynamics. However, functional response traits, which aim to predict how species respond to environmental change, are still rarely integrated into studies of ecological stability. Such traits should mechanistically drive community stability, both in terms of community abundance (functional variability) and composition (compositional variability). In turn, whether and how functional or compositional stability scales to affect temporal variation in functional effect traits (a proxy for ecosystem functioning) remains largely unknown, but is key to consistent ecosystem functioning under environmental change. Here, we explore the diversity-stability relationship in bird communities using annual survey data across 98 sites in central Romania, in combination with global trait databases and structural equation models. We show that higher response trait diversity promotes compositional variability directly, and functional variability indirectly via species asynchrony. In turn, functional variability impacts the temporal stability of effect trait diversity. Multiple facets of diversity and community stability differ between natural forests and agricultural or human-dominated survey sites, and the relationship between response diversity and functional variability is mediated by land cover. Further integration of response-and-effect trait frameworks into studies of community stability will enhance understanding of the drivers of biodiversity change, allowing targeted conservation decision-making with a focus on stable ecosystem functioning in the face of global environmental change.

The global impact of management on soil nematode abundances.

Research Highlight: Li, X., Liu, T., Li, H., Geisen, S., Hu, F., & Liu, M. (2022). Management effects on soil nematode abundance differ among functional groups and land-use types at a global scale. Journal of Animal Ecology, https://doi.org/10.1111/1365-2656.13744. Despite the well-documented decline of aboveground species abundances as a result of land-use intensification, there has been little attention on the effects of human activities on belowground species abundances. Li et al. analyse nematode data, the most abundant animal on the planet, from across the globe to determine whether their abundances vary between managed and unmanaged habitats. The authors show that, unlike aboveground biodiversity, nematode abundance is higher in managed than unmanaged primary and secondary habitats. Furthermore, responses to land management vary between trophic groups and they do not appear to follow the general hypothesis that higher trophic levels are more vulnerable to human activity than those further down the food chain, except in urban habitats. Finally, Li et al. show that the relationships between environmental predictors and species abundance were weakened (and sometimes reversed) in managed habitats. Together, their results reveal how land-use management is impacting the trophic composition of soil nematode communities and their relationships with the environment, which has implications for ecosystem functioning.

Family mealtime emotions and food parenting practices among mothers of young children: Development of the Mealtime Emotions Measure for Parents (MEM-P).

Family mealtimes can be important for supporting children's healthy development, yet the emotional context of mealtimes can vary considerably, likely impacting their overall success and enjoyment. Yet, despite having an important role, little is known about how parents emotionally experience mealtimes with their family. The first aim of the current study was to assess the factor structure of a novel self-report measure to assess parents' emotional responses experienced during family mealtimes (Mealtime Emotions Measure for Parents; MEM-P). The second aim was to examine relationships between maternal mealtime emotions and their food parenting practices. Mothers of children aged between 1.5 and 6 years participated in this study. Mothers were invited to complete an online questionnaire measuring family mealtime emotions, anxiety, depression and food parenting practices. Exploratory factor analysis produced a three-factor solution comprising both positive and negative emotion subscales: MEM-P Efficacy; MEM-P Anxiety; MEM-P Stress and Anger. Mothers' positive mealtime emotions (mealtime efficacy) were related to greater use of practices promoting autonomy, providing a healthy home food environment, and modelling healthy eating. Higher anxiety about mealtimes was related to greater reports of child control over eating, and mealtime stress and anger was associated with greater use of food to regulate emotions. These findings highlight novel relationships between how mothers emotionally experience family mealtimes and the food parenting practices they use with their children. It is important to develop resources to help promote positive maternal experiences of family mealtimes and food-based interactions.

Global effects of land use on local terrestrial biodiversity.

Human activities, especially conversion and degradation of habitats, are causing global biodiversity declines. How local ecological assemblages are responding is less clear--a concern given their importance for many ecosystem functions and services. We analysed a terrestrial assemblage database of unprecedented geographic and taxonomic coverage to quantify local biodiversity responses to land use and related changes. Here we show that in the worst-affected habitats, these pressures reduce within-sample species richness by an average of 76.5%, total abundance by 39.5% and rarefaction-based richness by 40.3%. We estimate that, globally, these pressures have already slightly reduced average within-sample richness (by 13.6%), total abundance (10.7%) and rarefaction-based richness (8.1%), with changes showing marked spatial variation. Rapid further losses are predicted under a business-as-usual land-use scenario; within-sample richness is projected to fall by a further 3.4% globally by 2100, with losses concentrated in biodiverse but economically poor countries. Strong mitigation can deliver much more positive biodiversity changes (up to a 1.9% average increase) that are less strongly related to countries' socioeconomic status.

Contribution of local rarity and climatic suitability to local extinction and colonization varies with species traits.

Changes in species distributions through local extinction and colonization events are a major consequence of climate change. The mechanisms underlying these processes, however, are yet to be fully understood. We investigate the effects of climatic suitability and local rarity on local extinction and colonization of British birds. We test the hypothesis that local extinction and colonization on decadal scales are driven by both climatic suitability and the prevalence of the species within an area and that the balance between these two is affected by species traits. We use spatially explicit conditional autoregressive models to determine the effect size of local rarity and climatic suitability (extracted from climate envelope models) on local extinction and colonization events. We then use phylogenetically constrained, generalized least-square models to estimate the association of extinction and colonization predictors with body mass, clutch size and national range of each species. Both local rarity and climatic suitability of an area contributed to local extinctions and colonizations, but the importance of these predictors varied between species. This interspecific variation was explained, in part, by species traits, in particular national range, which influenced the importance of local rarity and climatic suitability to both local extinction and colonization. These results further our knowledge of the mechanisms underlying changes in species occupancy due to climate change. This can inform predictive models as well as contribute to more focussed avian conservation efforts.

Parental strategies used in the family meal session of family-based treatment for adolescent anorexia nervosa: Links with treatment outcomes.

OBJECTIVE: Examine relationships between parental mealtime strategies used in the family meal session of family-based treatment (FBT) and adolescent outcomes at EOT (session 20). METHOD: Eighteen families with an adolescent receiving FBT-AN participated. Parental strategies during videoed family meals were assessed using a family mealtime coding system. Change scores were calculated for both adolescent %EBW and EDE scores. RESULTS: Increased use of parental direct and non-direct eating prompts during the family meal was associated with greater adolescent weight gain at EOT. Use of parental mealtime strategies was not associated with any significant change in adolescent eating psychopathology at EOT. DISCUSSION: Parental verbal eating prompts during the family meal may be effective in promoting short-term weight gain. During the family meal session, parents should be encouraged to maintain a direct focus on their adolescent child's eating behaviour which may assist their child with food consumption and potential weight gain. Further research examining food-based interactions among parents and their adolescent child with AN is needed. © 2016 Wiley Periodicals, Inc.(Int J Eat Disord 2017; 50:433-436).

How do Physicians Decide to Refer Their Patients for Psychiatric Genetic Counseling? A Qualitative Study of Physicians' Practice.

Psychiatric genetic counseling (PGC) is an emerging specialty discipline within the genetic counseling profession. A specialist PGC service was founded in 2012 in Vancouver, Canada, and though patient benefits have been demonstrated, many physicians do not regularly refer patients to the service despite awareness of its availability. We conducted a qualitative study involving semi-structured telephone interviews with Vancouver-based physicians who were aware of the PGC service to explore this phenomenon. Interviews were audio-recorded, transcribed verbatim, coded, and analysed for emergent themes. Consistent with a grounded theory approach, constant comparison was employed throughout data collection and analysis. Analyses of interviews conducted with 12 physicians revealed that referral practices were informed by perceptions about the purpose of PGC and interpretation of patient cues. Physicians perceived PGC as an information-focused intervention, and considered referral when patients explicitly expressed desire for information about recurrence risk or etiology that they felt unable to adequately address themselves. Even when physicians identified psychotherapeutic benefits of PGC, patient needs of this nature were not perceived as cues prompting referral to PGC. These data suggest that further work is necessary to position PGC in physicians' minds as a service that could potentially benefit most individuals with psychiatric disorders and their families, and that it encompasses more than information provision. It is important to increase physicians' awareness of the complementary role that genetic counselors can play to that of the physician in providing psychotherapeutically oriented counselling about illness etiology.

How do parents of adolescent patients with anorexia nervosa interact with their child at mealtimes? A study of parental strategies used in the family meal session of family-based treatment.

OBJECTIVE: To examine the range and frequency of parental mealtime strategies used during the family meal session of Family-Based Treatment (FBT) for adolescent anorexia nervosa, and to explore the relationships between parental mealtime strategies, mealtime emotional tone and parental 'success' at encouraging adolescent food consumption. METHOD: Participants were 21 families with a child aged between 12 and 18 years receiving FBT for adolescent anorexia nervosa. Video recordings of the family meal session (FBT session two) were coded using the Family Mealtime Coding System adapted in this study for use with adolescents (FMCS-A) to identify frequency of parental strategies, emotional tone of the meal (measured by adolescent positive and negative vocalisations) and frequency of prompted mouthfuls consumed by the adolescent (measured by the number of mouthfuls consumed by the adolescent immediately following parental interactions). RESULTS: A range of parental mealtime strategies were in use. Those used repeatedly included direct eating prompts, non-direct eating prompts, physical prompts, and providing information or food-related choices. Several parental mealtime strategies (direct and non-direct eating prompts) were found to be consistently associated with the tone of adolescents' vocalisations and the number of mouthfuls consumed in response to a parental prompt. DISCUSSION: Despite associations with negativity from the adolescent, the use of food-related prompts (both verbal and physical) seems to be associated with increased eating. This indicates the potentially important role of parental control of eating. Following replication, these findings might provide a focus for therapists when supporting and coaching parents during the family meal session.

Development of the Mealtime Emotions Measure for adolescents (MEM-A): gender differences in emotional responses to family mealtimes and eating psychopathology.

This study aimed to examine the factor structure of the Mealtime Emotions Measure for adolescents (MEM-A), a novel measure of emotional responses experienced during family mealtimes. Additionally, it examined gender differences in mealtime emotions and also the relationships between mealtime emotions and levels of eating psychopathology, when controlling for anxiety or depression. Adolescent participants (N = 527; 282 girls, 245 boys) with a mean age of 15.9 years completed the new mealtime measure for adolescents (MEM-A), in addition to questions about family mealtime atmosphere, and measures assessing symptoms of anxiety, depression, and eating psychopathology. Factor analysis produced a three factor solution for the MEM-A with two subscales relating to different types of negative mealtime emotions (Anxiety-related mealtime emotions and Anger-related mealtime emotions) and one subscale relating to Positive mealtime emotions. Generally, girls reported experiencing more Anxiety-related mealtime emotions compared to boys. Having conducted separate analyses controlling for levels of either anxiety or depression, there were several significant associations for both girls and boys between mealtime emotions, particularly Anxiety-related emotions, and eating psychopathology. The findings suggest that some mealtime emotions are associated with increased eating psychopathology. Replication and detailed examination of these emotional responses is required.

Eating disorder examination questionnaire: factor structure for adolescent girls and boys.

OBJECTIVE: To examine the factor structure of the EDE-Q among a sample of adolescents. METHOD: A community-based sample of 917 adolescents (522 girls and 395 boys) aged 14-18 years completed the EDE-Q version 6.0 as part of a larger study. Participants were randomly assigned to one of two subsamples to enable separate analyses. RESULTS: A confirmatory factor analysis on the original four factor model of the EDE-Q produced an inadmissible model with a poor fit. Exploratory factor analysis using principal axis factoring produced an alternative three factor model of the EDE-Q among adolescents. The Shape and Weight Concerns, Restriction and Preoccupation and Eating Concern subscales accounted for 65% of the total variance. Subscale and global scores were significantly higher for girls than for boys. A high proportion of both girls (53.6%) and boys (30.5%) reported participating in at least one key eating disordered behaviour during the previous 28 days. DISCUSSION: The results of this study present three new subscales (Shape and Weight Concerns, Restriction and Preoccupation and Eating Concern) which are suggested for use in future research which uses the EDE-Q with community samples of adolescents.

Family mealtimes and eating psychopathology: the role of anxiety and depression among adolescent girls and boys.

Characteristics of family mealtimes are associated with disordered eating behaviours. However, little is known about the relationships between characteristics of family mealtimes and disordered eating attitudes, or how symptoms of anxiety or depression may contribute to these relationships. This study therefore aimed to examine differences between adolescent girls and boys in the relationship between family mealtime characteristics and eating psychopathology, and to explore the influence of anxiety and depression on this relationship. Adolescents (N=535; 286 girls and 249 boys) aged 14-18years completed self-report measures of family mealtime characteristics, eating psychopathology, anxiety and depression. Reports of more frequent family mealtimes, a more positive mealtime atmosphere and a high level of priority placed on mealtimes were all associated with significantly lower levels of eating-disordered attitudes among girls only. For boys, all four mealtime measures (higher mealtime frequency, more positive mealtime atmosphere, greater priority of mealtimes and higher levels of mealtime structure) were associated with lower levels of depression. Among girls, several of the family mealtime and eating psychopathology relationships were partially or fully mediated by either anxiety or depression. While these findings require longitudinal replication, family mealtimes are likely to be important in promoting psychological well-being among both girls and boys. Families should be encouraged to think beyond the frequency of mealtimes and to foster a positive mealtime environment which may help to promote adolescent psychological wellbeing, and might even protect young females against the development of eating psychopathology.

Family body culture, disordered eating and mental health among young adult females during COVID-19.

Different family interactions related to body weight and shape may co-occur and represent a broader 'family body culture'. This may be important in the context of COVID-19 due to a heightened focus on body weight/shape, and many young adults living back with their families. This study aimed to, first, explore relationships between different family body-related interactions to assess the presence of a family body culture, and second, explore relationships between aspects of family body culture, disordered eating and mental health among young adult females during the COVID-19 pandemic. Participants were 233 females aged 18-25 years who completed measures of family body culture (family fat talk; family weight concern; family weight teasing), disordered eating, anxiety and depression. Results showed all aspects of family body culture were significantly, positively related. Engaging in fat talk with family members (self fat talk) was a key correlate of disordered eating, anxiety and depression. Family concern with weight was also significantly associated with disordered eating. Findings suggest that among some families there is a more problematic family body culture with a greater importance placed on body weight and shape through various body-related interactions. Additionally, findings highlight two key aspects of family body culture related to disordered eating and wellbeing among young adult females. Specifically, vocalising critical remarks about one's own body when with family and an environment that may indirectly communicate a high importance of body weight and shape (e.g., via dieting). These should be considered in future family interventions to support healthy eating behaviours.

COVID-19 and coping: Absence of previous mental health issues as a potential risk factor for poor wellbeing in females.

COVID-19 has caused unprecedented disruption to everyday life. Unsurprisingly, this has resulted in increased prevalence of poor mental wellbeing. While previous mental health issues have been consistently flagged as a risk factor, the absence of these may also leave individuals vulnerable due to a lack of psychological coping strategies. This study explored the change in symptoms of anxiety, depression, and trauma in 167 females who provided data at four timepoints over the course of the first year of the pandemic. There was a significant effect of time on the extent of the change in depression but, for all wellbeing measures, those with current or previous mental health issues experienced a similar magnitude of change as those with no previous issues. This suggests that low-risk individuals may be faring worse, relatively. Ensuring that this group is not overlooked will be imperative in protecting and re-building the wellbeing of the nation.

Disturbance at the dinner table: Exploring mothers' experiences of mealtimes when caring for their son or daughter with anorexia nervosa.

This study examined mothers' (n = 9) mealtime experiences when caring for their son or daughter with anorexia nervosa through semi-structured interviews. Interpretative Phenomenological Analysis identified three themes: (1) managing mealtime combat through accommodation and acceptance; (2) feeling isolated, inauthentic and ill-equipped and (3) a need for understanding and to be understood. The overarching concepts of 'combat' and 'distortion' also underpin the analysis, uniquely outlining how mothers come to understand this daily situation. Mealtime-related interventions need to be developed which prioritise promoting skills and confidence in managing mealtimes and helping carers to address the emotional challenges of these occasions.

Data quantity is more important than its spatial bias for predictive species distribution modelling.

Biological records are often the data of choice for training predictive species distribution models (SDMs), but spatial sampling bias is pervasive in biological records data at multiple spatial scales and is thought to impair the performance of SDMs. We simulated presences and absences of virtual species as well as the process of recording these species to evaluate the effect on species distribution model prediction performance of (1) spatial bias in training data, (2) sample size (the average number of observations per species), and (3) the choice of species distribution modelling method. Our approach is novel in quantifying and applying real-world spatial sampling biases to simulated data. Spatial bias in training data decreased species distribution model prediction performance, but sample size and the choice of modelling method were more important than spatial bias in determining the prediction performance of species distribution models.

Quantifying large-scale ecosystem stability with remote sensing data.

To fully understand ecosystem functioning under global change, we need to be able to measure the stability of ecosystem functioning at multiple spatial scales. Although a number of stability components have been established at small spatial scales, there has been little progress in scaling these measures up to the landscape. Remote sensing data holds huge potential for studying processes at landscape scales but requires quantitative measures that are comparable from experimental field data to satellite remote sensing. Here we present a methodology to extract four components of ecosystem functioning stability from satellite-derived time series of Enhanced Vegetation Index (EVI) data. The four stability components are as follows: variability, resistance, recovery time and recovery rate in ecosystem functioning. We apply our method to the island of Ireland to demonstrate the use of remotely sensed data to identify large disturbance events in productivity. Our method uses stability measures that have been established at the field-plot scale to quantify the stability of ecosystem functioning. This makes our method consistent with previous small-scale stability research, whilst dealing with the unique challenges of using remotely sensed data including noise. We encourage the use of remotely-sensed data in assessing the stability of ecosystems at a scale that is relevant to conservation and management practices.

Predicting Patient-Centered Outcomes from Spine Surgery Using Risk Assessment Tools: a Systematic Review.

PURPOSE OF REVIEW: The purpose of this systematic review is to evaluate the current literature in patients undergoing spine surgery in the cervical, thoracic, and lumbar spine to determine the available risk assessment tools to predict the patient-centered outcomes of pain, disability, physical function, quality of life, psychological disposition, and return to work after surgery. RECENT FINDINGS: Risk assessment tools can assist surgeons and other healthcare providers in identifying the benefit-risk ratio of surgical candidates. These tools gather demographic, medical history, and other pertinent patient-reported measures to calculate a probability utilizing regression or machine learning statistical foundations. Currently, much is still unknown about the use of these tools to predict quality of life, disability, and other factors following spine surgery. A systematic review was conducted using PRISMA guidelines that identified risk assessment tools that utilized patient-reported outcome measures as part of the calculation. From 8128 identified studies, 13 articles met inclusion criteria and were accepted into this review. The range of c-index values reported in the studies was between 0.63 and 0.84, indicating fair to excellent model performance. Post-surgical patient-reported outcomes were identified in the following categories (n = total number of predictive models): return to work (n = 3), pain (n = 9), physical functioning and disability (n = 5), quality of life (QOL) (n = 6), and psychosocial disposition (n = 2). Our review has synthesized the available evidence on risk assessment tools for predicting patient-centered outcomes in patients undergoing spine surgery and described their findings and clinical utility.

Family mealtime negativity and adolescent binge-eating: A replication and extension study in a community sample.

OBJECTIVE: To explore differences in family mealtime characteristics and family mealtime emotions among adolescents who report engaging in binge-eating in comparison to those who do not. METHOD: Adolescents (N = 495) recruited from UK schools/colleges reported on their family mealtime frequency and atmosphere, family mealtime emotions, anxiety, depression and eating psychopathology. RESULTS: No significant differences were found between adolescents who reported binge-eating (n = 32 boys; n = 82 girls) and those who did not (n = 196 boys; n = 185 girls) on family mealtime frequency or mealtime atmosphere scores. However, boys and girls who binge-eat reported significantly lower levels of positive family mealtime emotions and significantly higher levels of family mealtime anxiety and anger (girls only), compared with their peers who did not report binge-eating. DISCUSSION: Adolescents who binge-eat experience significantly greater negative emotional responses to family mealtimes than their peers. Further research should explore why these experiences are more negative, including broader familial factors and interactions.

The ZtvelB Gene Is Required for Vegetative Growth and Sporulation in the Wheat Pathogen Zymoseptoria tritici.

The ascomycete fungus Zymoseptoria tritici is the causal agent of Septoria Tritici Blotch (STB), a major disease of wheat across Europe. Current understanding of the genetic components and the environmental cues which influence development and pathogenicity of this fungus is limited. The velvet B gene, velB, has conserved roles in development, secondary metabolism, and pathogenicity across fungi. The function of this gene is best characterised in the model ascomycete fungus Aspergillus nidulans, where it is involved in co-ordinating the light response with downstream processes. There is limited knowledge of the role of light in Z. tritici, and of the molecular mechanisms underpinning the light response. We show that Z. tritici is able to detect light, and that the vegetative morphology of this fungus is influenced by light conditions. We also identify and characterise the Z. tritici velB gene, ZtvelB, by gene disruption. The ΔztvelB deletion mutants were fixed in a filamentous growth pattern and are unable to form yeast-like vegetative cells. Their morphology was similar under light and dark conditions, showing an impairment in light-responsive growth. In addition, the ΔztvelB mutants produced abnormal pycnidia that were impaired in macropycnidiospore production but could still produce viable infectious micropycnidiospores. Our results show that ZtvelB is required for yeast-like growth and asexual sporulation in Z. tritici, and we provide evidence for a role of ZtvelB in integrating light perception and developmental regulation in this important plant pathogenic fungus.