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Recurring bleaching events disrupt the spatial properties of coral reef benthic communities across scales
Get PDFAbstractMarine heatwaves are causing recurring coral bleaching events on tropical reefs that are driving ecosystem change. Yet, little is known about how bleaching and subsequent coral mortality impacts the spatial properties of tropical seascapes, such as patterns of organism spatial clustering and heterogeneity across scales. Changes in these spatial properties can offer insight into ecosystem recovery potential following disturbance. Here we repeatedly quantified coral reef benthic spatial properties around the circumference of an uninhabited tropical island in the central Pacific over a 9‐year period that included a minor and subsequent severe marine heatwave. Benthic communities showed increased biotic homogenisation following both minor and mass bleaching, becoming more taxonomically similar with less diverse intra‐island community composition. Hard coral cover, which was highly spatially clustered around the island prior to bleaching, became less spatially clustered following minor bleaching and was indiscernible from a random distribution across all scales (100–2000 m) following mass bleaching. Interestingly, the reduced degree of hard coral cover spatial clustering was already evident by the onset of mass bleaching and before any dramatic wholesale loss in island‐mean coral cover occurred. Reductions in hard coral spatial clustering may therefore offer an early indication of the ecosystem becoming degraded prior to mass coral mortality. In contrast, the spatial clustering of competitive fleshy macroalgae remained unchanged through both bleaching events, while crustose coralline algae and fleshy turf algae became more spatially clustered at larger scales (200–700 m) following mass bleaching. Overall, benthic community spatial patterning became less predictable following bleaching and was no longer reflective of gradients in long‐term environmental drivers that typically structure these remote reefs. Our findings provide novel insights into how climate‐driven marine heatwaves can impact the spatial properties of coral reef communities over multiple scales
On their way to the north: larval performance of Hemigrapsus sanguineus invasive on the European coast—a comparison with the native European population of Carcinus maenas
Get PDFThe Asian shore crab Hemigrapsus sanguineus has become invasive in North Europe and it co-occurs and competes with the native European shore crab Carcinus maenas. Both species develop through a feeding and dispersive larval phase characterised by several zoeal and a settling megalopa stage. Larvae of marine crabs are vulnerable to food limitation and warming has the potential to exacerbate the negative effects of food limitation on survival and growth. We quantified the combined effects of temperature and food limitation on larval performance (survival and growth) of H. sanguineus and we compared our results with those reported on performance of C. maenas larvae, under the same experimental design and methodology. Larvae from four females of H. sanguineus collected on Helgoland (North Sea) were experimentally reared from hatching to megalopa, at four temperatures (range 15–24 °C) and two food conditions (permanent vs. daily limited access to food). Larval survival of H. sanguineus was low at 15 °C and increased with temperature, in contrast to the high survival reported for C. maenas larvae in the range 15–24 °C. Food limitation reduced survival and body mass of H. sanguineus larvae at all temperatures, but without evidence of the exacerbating effect caused by high temperatures and reported for C. maenas. By contrast, high temperature (24 °C) mitigated the negative effect of food limitation on body mass on H. sanguineus larvae. Advantages of H. sanguineus over C. maenas appear especially under the increased temperatures expected from climate change
Screen use: Its association with caregiver mental health, parenting, and children's ADHD symptoms
Get PDFObjectiveThe aim was to examine the relationship between caregiver's mental health (parental psychological distress, and parenting stress), dysfunctional parenting (lax or overreactive parenting), and the screen media use in understanding attention-deficit/hyperactivity disorder (ADHD) symptoms of children within an integrated model framework.BackgroundFamilial factors and screen use have shown to be significantly related to ADHD in children. However, theoretical models of the role of family environment, screen use, and ADHD have rarely been tested jointly, and little is known about these associations in southeastern European middle-income countries (MICs).MethodData from 835 primary caregivers (92% biological mother, 4% biological father, 3% grandmother or grandfather, 1% other) of children (2 to 9 years) from three MICs were analyzed using path analyses, and models were tested for generalizability across education levels and marital status using multigroup analyses. ADHD-related symptoms were assessed with a structured clinical interview (Mini International Neuropsychiatric Interview for Children and Adolescents–Parent Version [MINI-KID-P]) and the Child Behavioral Checklist (CBCL).ResultsWhereas screen use was directly associated with ADHD symptoms across measures, a significant indirect effect of lax parenting on attentional problems via screen use was found only for the CBCL parent report. The final models were tested using multigroup analyses across education levels and marital status with no significant differences.ConclusionInvestments in resource and capacity building for children's primary caregivers that target lax parenting and limiting of screen use may impact children's attentional problems across educational levels and married and nonmarried caregivers
Complementary uses of stable isotope and dietary metabarcoding analyses for trophic web determination in freshwater and estuarine tropical fishes
Get PDFBritish and Irish newspapers implicitly support single-use masks over reusable face coverings
Get PDFIntroduction: The environmental impact of waste caused by single-use masks or face coverings is an under-considered effect associated with the COVID-19 pandemic. The combination of the protective purpose of face masks and their potential environmental impacts through littering or waste management means the wearing of face masks is simultaneously associated with the health crisis and creation of a new environmental challenge, combining two strands of journalism. Methods: Our study demonstrates how the discourse in British and Irish newspapers in the March 2020-December 2021 time frame relates to this problem. By a combination of quantitative and qualitative discourse analysis, we identify concepts commonly associated with the terms “face-covering” and “mask,” particularly concerning whether they refer to a disposable or reusable item. Results: Results suggest that the newspaper discourse generally favored references to single-use surgical masks. Newspapers reported on the environmental impact of face masks only in very limited ways. Discussion: We propose that the increase in waste caused by face masks can be related to prevailing representations of single-use surgical masks and limited attention paid to environmental concerns
Place attachment and perception of climate change as a threat in rural and urban areas
Get PDFClimate change is a global threat to ecosystems and the people that depend on them. However, the perceived threat of climate change may vary spatially. Previous research suggests that inhabitants in rural areas show higher levels of place attachment (associating meaning with a specific place) than urbanites, possibly because rural people depend more directly on their local environment. This can shape perceptions and behaviours, such as enhanced willingness to engage in landscape preservation. Here we ask if it also makes rural people perceive climate change as a greater threat, using a representative sample of 1,071 survey respondents from across the United Kingdom (UK) to provide first-order insights. We found that, whilst indicators of place attachment were indeed more frequent in rural areas, the perceived threat of climate change in the most rural locations was lower. We discuss possible explanations for this pattern (including lower levels of awareness of the anthropogenic causes of climate change, lessened first-hand experiences of climate change impacts due to higher levels of regulating ecosystem services, and higher levels of resilience in rural areas related to a closer relationship with nature), and call for further research to investigate this
Cognitive and Behavioral Contributions to Depression Severity, Quality of Life, and Functioning Among People Living With HIV in South Africa
Get PDFCognitive-behavioral treatments for depression typically address both behavioral (e.g., activation) and cognitive (e.g., rumination) components, and consequently improve quality of life (QOL) and function in high-resource settings. However, little is known about the cross-cultural applicability and relative contribution of these components to depression symptom severity, QOL, and functional impairment in South Africa and other resource-limited global settings with high HIV prevalence rates. Persons with HIV (N = 274) from a peri-urban community outside Cape Town, South Africa, were administered multiple measures of depression (Hamilton Depression Scale, Centre for Epidemiological Studies Depression Scale, South African Depression Scale), cognitive and behavioral components related to depression (Ruminative Response Scale, Behavioral Activation for Depression Scale), and measures of QOL and functioning (Sheehan Disability Scale, Quality of Life Enjoyment and Satisfaction Scale-Short Form). Multiple linear regression models were fit to assess the relative contribution of behavioral and cognitive components to depression severity, QOL, and functional impairment in this population. Models accounting for age and sex revealed that lower levels of behavioral activation (BA) were significantly associated with all measures of depression, as well as with QOL and functional impairment (all ps
‘Interoceptive Awareness Opportunities’ during Outdoor Education for children with a history of complex trauma.
Get PDFOutdoor activities can benefit children with emotional or behavioural difficulties. Looked After Children frequently have a history of complex trauma and tend to avoid traditional therapies. Early adversity exposes a developing child to toxic stress, often leading to a dysregulated nervous system. Interoception refers to internal bodily processes that sometimes enter conscious awareness, including heart-rate, breathing and emotional sensations. Maladaptive interoception can develop following traumatic life experiences, contributing to mental health symptoms. Interoception is associated with emotional regulation, and mindful body-based activities can improve interoceptive awareness. The physicality of outdoor activities makes them ideal sensory experiences for enhancing the connection between mind and body. This current project developed Interoceptive Awareness Opportunities (IAOs) during outdoor activities. Instructors reported IAOs were feasible to incorporate within 1:1 Outdoor Education sessions at a therapeutic children’s home. Instructors successfully engaged children who were resistant to conventional therapy and reported an apparent increase in bodily awareness
Between- and within-individual sociodemographic and psychological determinants of PrEP adherence among men who have sex with men prescribed a daily PrEP regimen in Wales
Get PDFWe investigated the determinants of daily PrEP use and coverage of condomless anal sex (CAS) by PrEP among men who have sex with men in Wales, UK. We measured PrEP use by electronic monitors and CAS by secure online surveys. We defined PrEP use based on daily medication cap openings and coverage as CAS episodes preceded by ≥ 3 days of PrEP use and followed by ≥ 2 days of PrEP use. We included 57 participants (5463 observations). An STI diagnosis was associated with lower PrEP use but also lower PrEP coverage. Older adults had higher PrEP use. A belief that other PrEP users took PrEP as prescribed was associated with lower PrEP coverage. An STI diagnosis is an important cue for an intervention, reflecting episodes of high-risk sexual behaviour and low PrEP coverage. Other results provide a basis for the development of an evidence-informed intervention for promoting coverage of PrEP.</p