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Ocean currents magnify upwelling and deliver nutritional subsidies to reef-building corals during El Niño heatwaves
Get PDFMarine heatwaves are triggering coral bleaching events and devastating coral populations globally, highlighting the need to identify processes promoting coral survival. Here, we show that acceleration of a major ocean current and shallowing of the surface mixed layer enhanced localized upwelling on a central Pacific coral reef during the three strongest El Niño-associated marine heatwaves of the past half century. These conditions mitigated regional declines in primary production and bolstered local supply of nutritional resources to corals during a bleaching event. The reefs subsequently suffered limited post-bleaching coral mortality. Our results reveal how large-scale ocean-climate interactions affect reef ecosystems thousands of kilometers away and provide a valuable framework for identifying reefs that may benefit from such biophysical linkages during future bleaching events.</p
What makes for effectiveness when starting early -Learning from an integrated school-based violence and abuse prevention programme for children under 12
Get PDFBackground Integrated programmes addressing varying forms of violence and abuse are increasingly delivered to children under 12 but uncertainty remains about what should be delivered to whom, when and in what dose. Objective To examine the impact of Speak Out Stay Safe (SOSS) - an integrated prevention programme for children under 12 - and whether impact varied by age, gender and context. Participants and setting A representative UK sample of primary schools in receipt of SOSS was matched with comparison schools not receiving SOSS. At 6 months follow-up, 1553 children from 36 schools completed the survey. Methods The matched control study incorporated economic and process evaluations. Survey measures included: children's knowledge and understanding of different forms of violence and abuse, readiness to seek help, knowledge of sexual abuse, perceptions of school culture and health and wellbeing. Perceptions of children, teachers, and facilitators were captured. Results At 6 months, children aged 9–10 who received SOSS retained their improved knowledge of neglect and their ability to identify a trusted adult who they would tell about violence or abuse. Children aged 6–7 receiving a shorter version of the programme were less likely to benefit and boys made fewer gains than girls. SOSS improved the knowledge of children with low knowledge of abuse. School culture was closely associated with programme impact. Conclusion School-based prevention programmes deliver benefits at low cost but should acknowledge and engage with the specific school context to achieve school readiness and embed programme messages
Factor structure of the Depression, Anxiety and Stress Scale among caregivers in Southeastern Europe
Get PDFAbstractObjectiveThis study aimed to evaluate the factor structure of the Depression Anxiety and Stress Scale (DASS‐21) among caregivers of young children in Southeastern Europe.BackgroundThe DASS‐21 is a widely used measure in prevention and intervention research with families. Studies regarding the scale's psychometric properties among caregivers, particularly from non‐Western countries, are limited and additional research is required.MethodThe DASS‐21 was administered to N = 835 primary caregivers from North Macedonia, the Republic of Moldova, and Romania. Competing models were tested with confirmatory factor analysis (CFA). Measurement invariance was assessed using multigroup CFA (MGCFA). Bifactor dimensionality and reliability indices were used to evaluate the validity of the composite and subscale scores.ResultsA tripartite bifactor model with two specific factors (depression and anxiety) and one general factor (negative affectivity) represented the data well. This model showed cross‐country configural and partial metric invariance. Dimensionality and reliability indices supported a unidimensional interpretation of the measure, with the general negative affectivity factor accounting for a substantial share of the variance (82%) compared to the specific factors of depression (10%) and anxiety (8%).ConclusionThe tripartite model best represented the data. Configural and partial metric invariance were verified for this model. Dimensionality and reliability indices, however, indicate that the DASS‐21 functions best as a general measure of negative affectivity.ImplicationsFuture intervention studies involving caregivers from Southeastern Europe should consider using the DASS‐21 as an overall measure of negative affectivity and utilize the composite score instead of the subscale scores
Digital Health Literacy and Digital Engagement for people with severe mental ill health across the course of the COVID-19 pandemic in England
Get PDFBackground: An unprecedented acceleration in digital mental health services happened during the COVID-19 pandemic. However, people with severe mental ill health (SMI) might be at risk of digital exclusion, partly because of a lack of digital skills, such as digital health literacy. The study seeks to examine how the use of the Internet has changed during the pandemic for people with SMI, and explore digital exclusion, symptomatic/health related barriers to internet engagement, and digital health literacy. Methods: Over the period from July 2020 to February 2022, n = 177 people with an SMI diagnosis (psychosis-spectrum disorder or bipolar affective disorder) in England completed three surveys providing sociodemographic information and answering questions regarding their health, use of the Internet, and digital health literacy. Results: 42.5% of participants reported experiences of digital exclusion. Cochrane-Q analysis showed that there was significantly more use of the Internet at the last two assessments (80.8%, and 82.2%) compared to that at the beginning of the pandemic (65.8%; ps < 0.001). Although 34.2% of participants reported that their digital skills had improved during the pandemic, 54.4% still rated their Internet knowledge as being fair or worse than fair. Concentration difficulties (62.6%) and depression (56.1%) were among the most frequently reported symptomatic barriers to use the Internet. The sample was found to have generally moderate levels of digital health literacy (M = 26.0, SD = 9.6). Multiple regression analysis showed that higher literacy was associated with having outstanding/good self-reported knowledge of the Internet (ES = 6.00; 95% CI: 3.18–8.82; p < .001), a diagnosis of bipolar disorder (compared to psychosis spectrum disorder – ES = 5.14; 95% CI: 2.47–7.81; p < .001), and being female (ES = 3.18; 95% CI: 0.59–5.76; p = .016). Conclusions: These findings underline the need for training and support among people with SMI to increase digital skills, facilitate digital engagement, and reduce digital engagement, as well as offering non-digital engagement options to service users with SMI
Capturing red squirrels (Sciurus vulgaris) on camera: A cost-effective approach for monitoring relative abundance and habitat preference
Get PDFEffective methods for monitoring animal populations are crucial for species conservation and habitat management. Motion-activated cameras provide an affordable method for passively surveying animal presence across the landscape but have mainly been used for studying large-bodied mammals. This paper explores the relative abundance and habitat preferences of red squirrels (Sciurus vulgaris) in coniferous forests using cameras and live trapping. The study was conducted in two forests (Newborough and Pentraeth) on Anglesey, North Wales, with a total of 50 sampling locations across four habitat categories. Detailed woodland structure and composition data were gathered around each sampling location. We found a strong positive correlation between the number of individual red squirrels live trapped over 10 days with the number of camera images of squirrels recorded during a previous 5-day period. The time interval between camera deployment and the first recorded image of a red squirrel showed a significant negative correlation with the number of individuals live trapped. Red squirrel relative abundance was negatively related to forest canopy openness, while the presence of Scots pine and increased tree species diversity were positively associated with the relative abundance of squirrels. There was also a strong site difference with lower relative abundance at Newborough compared with Pentraeth, which likely reflects the heavy thinning of mature forest at Newborough reducing tree crown connectivity. The results show that remotely activated cameras are an effective method for monitoring red squirrel populations across varying animal densities. The cameras also provided crucial information on red squirrel habitat preferences that can aid in woodland management and conservation efforts. Cameras have great potential to collect data on the population status of other small mammals, but it is essential that these methods are validated on a species-by-species basis
Exploring healthcare professionals' experiences of providing care for people with dementia across the lifespan.
Get PDFVascular optimality dictates plant morphology away from Leonardo’s rule
Get PDFMetabolic scaling theory (MST) provides an understanding of scaling in organismal morphology. Empirical data on the apparently universal pattern of tip-to-base conduit widening across vascular plants motivate a set of generalized MST (gMST) relationships allowing for variable rates of conduit coalescence and taper and a transition between transport and diffusive domains. Our model, with coalescence limited to the distalmost part of the conductive system, reconciles previous MST-based models and extends their applicability to the entire plant. We derive an inverse relationship between stem volume taper and conduit widening, which implies that plant morphology is dictated by vascular optimality and not the assumption of constant sapwood area across all branching levels, contradicting Leonardo's rule. Thus, energy efficiency controls conduit coalescence rate, lowering the carbon cost needed to sustain the vascular network. Our model shows that as a plant grows taller, it must increase conduit widening and coalescence, which may make it more vulnerable to drought. We calculated how our gMST model implies a lower carbon cost to sustain a similar network compared to previous MST-based models. We also show that gMST predicts the cross-sectional area of vessels and their frequency along the relative length better than previous MST models for a range of plant types. We encourage further research obtaining data that would allow testing other gMST predictions that remain unconfirmed empirically, such as conduit coalescence rate in stems. The premise of energy efficiency can potentially become instrumental to our understanding of plant carbon allocation.</p
The genome sequence of the Common Pug, Eupithecia vulgata (Haworth, 1809)
Get PDFWe present a genome assembly from an individual male Eupitheciavulgata (the Common Pug; Arthropoda; Insecta; Lepidoptera;Geometridae). The genome sequence is 454.7 megabases in span.Most of the assembly is scaffolded into 31 chromosomalpseudomolecules, including the assembled Z sex chromosome. Themitochondrial genome has also been assembled and is 17.1 kilobasesin lengt
Intraspecific differences in short- and long-term foraging strategies of reef manta ray (Mobula alfredi) in the Chagos Archipelago
Get PDFAssessing the foraging ecology of a threatened species is necessary to understand their movement behaviour and habitat use patterns, which are essential for developing effective protection strategies. Here, the foraging ecology of reef manta rays (Mobula alfredi) in the Chagos Archipelago, a region encompassed by a vast no-take marine protected area (MPA), was investigated using stable isotope analysis of skin and muscle tissue. Enriched δ13C values suggest the population predominantly forages in nearshore environments. Skin δ13C values increased with increased rainfall, likely associated with the boosts in primary production and zooplankton biomass due to the coastal advection of seabird guano. Annual variations in δ13C values of skin and muscle were observed and are consistent with reduced nutrient transport associated with the effects of Indian Ocean Dipole oscillations, including a deepening of the thermocline, a suppression of cold-water upwelling, and reduced rainfall. Short- and long-term foraging strategies and locations were identified by applying hierarchical clustering, isotopic niche analysis, and Bayesian stable isotope mixing models to δ13C and δ15N of paired skin and muscle tissue samples. Two isotopically distinct groups of M. alfredi were identified, employing either local foraging strategies restricted to specific locations or wide-ranging strategies that likely mean they engage in regular migrations throughout the archipelago. Ninety-eight percent of M. alfredi were estimated to switch between strategies utilising and connecting multiple discrete nearshore habitats, emphasising their role in ecosystem functioning by facilitating the transport of nutrients across ecosystem boundaries. However, illegal, unreported, and unregulated fishing and lost or abandoned fishing gear commonly occur within the MPA. Locations of particular concern are Egmont Atoll as it is a highly active aggregation location and Peros Banhos Atoll where IUU frequently occurs and M. alfredi are estimated to be heavily reliant upon for foraging. Frequent migrations between atolls by M. alfredi also raises concern over their vulnerability to these activities along migration corridors. This research bridges current knowledge gaps in this population's foraging ecology and concomitant movement patterns, which should inform conservation strategies in the region