Later prehistoric woodlands and wood use on the lower Thames floodplain

The thesis seeks to illuminate the character of later prehistoric woodlands on the Thames floodplain and their use by contemporary communities. This is achieved by the application of a two-pronged research agenda which examines both non-cultural and cultural waterlogged wood assemblages from east London. The non-cultural data is obtained from the mapping, recording and species identification of 1679 tree trunks, stumps and root systems preserved on the Thames foreshore at Erith in Kent. This research facilitates the characterisation of four temporally distinct woodlands dating from the Later Neolithic through to the Early Iron Age period. Application of ecological and forest stand dynamics models provides a detailed reconstruction of the prehistoric landscape including the species composition, density, canopy height and maturity of the floodplain woodlands. As such, the three-dimensional woodland reconstructions provide the tangible character of the wooded landscape within which prehistoric activity is contextualised. Bronze Age trackway assemblages from Beckton Nursery in Newham and the Thames foreshore at Erith are simultaneously examined. Morphological and tree-ring analysis illuminates the nature of prehistoric wood use on the Thames floodplain, including evidence for tree species selection, woodland management and various woodworking techniques. This information is then placed within the reconstructed wooded landscape to facilitate comparison of the two datasets. It is suggested that the targeting of specific timber resources on the floodplain and the introduction of woodland management regimes linked to animal husbandry characterised woodland use. Furthermore, the contextualisation of the trackway features within the reconstructed landscape enables wider suggestions pertaining to contemporary cultural perceptions of the wooded landscape and alternative interpretations of later prehistoric activity on the floodplain

Bet- hedging reproduction strategies in the massive Caribbean coral Favia fragum

Bet- hedging has long been recognised as an adaptive mechanism in unpredictable environments, yet is often overlooked as an evolutionary strategy in corals to adapt to environmental conditions associated with climate change. Most environments vary spatially and temporally over the lifespan of corals, and corals use cues from their natal environments as “predictors” of the environment they will release their offspring into and may optimise phenotypes to maximise fitness to changes in the maternal environment. However, when conditions fluctuate in unpredictably or environmental cues are otherwise lost, producing a single phenotype could cause population bottlenecks. Prolonged summer periods of high sea surface temperatures combined with anthropogenic impacts are inhibiting environmental cues that have previously secured reproductive success in tropical scleractinian corals and enabled them to fine-tune their reproductive patterns to time periods that optimize external fertilization success, appropriate larval dispersal and efficient coral recruitment. This study tested the ability of the brooding species Favia fragum to “hedge their bets” on reproductive strategies in the presence/ absence of lunar cues, a cue known to play an important role in synchronizing reproductive output. Results illustrated F. fragum exhibited dynamic bet-hedging, tailoring larval output and producing a range of larval phenotypes and thus exhibiting plasticity dependent on their environment. In the absence of lunar cues, corals varied the timing of planulae release as well as within-clutch size variation promoting dispersal and retention to their natal environment. Lunar stimulated corals concentrated release to 3-6 days, typically produced a single phenotype aiding retention and re-seeding local reef populations. Reproductive flexibility will enable coral to strategize larval/ gamete release that optimise recruitment success within unstable environmental conditions. The use of such strategies in other brooding species and broadcast spawners should be a focus of further investigation to evaluate the potential for corals to populate environments beyond the familiar and persist future unpredictabilit

Trapping of fine-grained sediment on a supply-limited intertidal shore platform at Kaikōura, New Zealand

Shore platforms are generally supply-limited environments and few studies have attempted to measure sediment transport within this rock coast setting. This paper summarises a field-based pilot study that successfully collected fine-grain sediment moving across a sub-horizontal platform at Mudstone Bay, Kaikōura, New Zealand. Two large-aperture and two small-aperture Time-Integrated Mass-sediment Samplers (TIMS) were deployed for 9-days, encompassing 2 days of storm conditions (offshore significant wave heights between 2.0 and 3.6 m, with sediment trapped in both landward and seaward facing directions. The net flux of sediment captured in large aperture samplers was greatest in a seaward-direction (15.2 g), whereas the narrow-mouth samplers, that principally collected suspended sediment had a net onshore flux (5.4 g). The sediment traps yielded sufficient sample to undertake geochemical and textural analysis. Interpretation of these data suggests that the origin of transported material was autochthonous to the platform, being >80 % silt-sized and compositionally consistent with material derived from the shore platform and/or cliff colluvium. This pilot experiment demonstrates that mass-sediment samplers can be used in supply-limited intertidal shore platform settings. Further research involving greater sampling frequency and duration and concomitant detailed hydrodynamic measurements are likely to reveal important insights into the erosion environment

Early emergence of CD19-negative human antibody secreting cells at the plasmablast to plasma cell transition

Long-lived human plasma cells (PCs) play central roles in immunity and autoimmunity and are enriched amongst the subpopulation of CD19-negative human PCs. However, whether human CD19-negative PCs are necessarily ″aged″ cells that have gradually lost CD19 expression is not known. Assessing peripheral blood samples at steady state and during the acute response to influenza vaccination in healthy donors we identify the presence of phenotypic CD19-negative plasmablasts, the proliferative precursor state to mature PCs, and demonstrate by ELISpot that these are antibody-secreting cells (ASCs). During the acute response to influenza vaccination CD19-positive, CD19-low and CD19-negative ASCs secrete vaccine-specific antibody and show linked IGHV repertoires. To address precursor/product relationships we employ in vitro models which mimic both T-dependent and T-independent differentiation finding that the CD19-negative state can be established at the plasmablast to PC transition, that CD19-negative PCs increase as a percentage of surviving PCs in vitro, and that CD19-negative and CD19-positive PCs can be maintained independently. These data provide proof-of-principle for the view that newly generated ASCs can acquire a mature PC phenotype accompanied by loss of CD19 expression at an early stage of differentiation and that ″aging″ is not an obligate requirement for a CD19-negative state to be established

Persistent symptoms are associated with long term effects of COVID-19 among children and young people: Results from a systematic review and meta-analysis of controlled studies

BACKGROUND: Research on the long-term impact on COVID-19 in children and young people (CYP) has been published at pace. We aimed to update and refine an earlier systematic review and meta-analysis to assess the current evidence for Post-COVID-19 Condition in CYP. METHODS: Studies from the previous systematic review were combined with studies from a systematic search from July 2021 to November 2022 (registration PROSPERO CRD42021233153). Eligible studies included CYP aged ≤19 years with confirmed or probable SARS-CoV-2 infection and symptoms persisting at least 12 weeks. FINDINGS: 55 studies (n = 1,139,299 participants) were included. Over two-hundred symptoms were associated with Post COVID-19 Condition. Gastrointestinal problems, headaches, cough and fever were among the most prevalent symptoms with rates of 50.2%, 35.6%, 34.7% and 25.8% respectively. Twenty-one symptoms from 11 studies were suitable for meta-analysis. There were significantly higher pooled estimates of proportions of symptoms for altered / loss of smell or taste, dyspnoea, fatigue, and myalgia in CYP with confirmed SARS-CoV-2 infection. Heterogeneity was high suggesting substantial variation amongst the included studies. CONCLUSIONS: Many CYP continue to experience symptoms after SARS-CoV-2 infection. Efforts to aid early identification and intervention of those most in need is warranted and the consequences of COVID-19 for CYP call for long-term follow-up

Network analysis identifies proinflammatory plasma cell polarization for secretion of ISG15 in human autoimmunity

Plasma cells (PCs) as effectors of humoral immunity produce Igs to match pathogenic insult. Emerging data suggest more diverse roles exist for PCs as regulators of immune and inflammatory responses via secretion of factors other than Igs. The extent to which such responses are preprogrammed in B-lineage cells or can be induced in PCs by the microenvironment is unknown. In this study, we dissect the impact of IFNs on the regulatory networks of human PCs. We show that core PC programs are unaffected, whereas PCs respond to IFNs with distinctive transcriptional responses. The IFN-stimulated gene 15 (ISG15) system emerges as a major transcriptional output induced in a sustained fashion by IFN-α in PCs and linked both to intracellular conjugation and ISG15 secretion. This leads to the identification of ISG15-secreting plasmablasts/PCs in patients with active systemic lupus erythematosus. Thus, ISG15-secreting PCs represent a distinct proinflammatory PC subset providing an Ig-independent mechanism of PC action in human autoimmunity

M.I.C.E-Mental Health Intervention for Children with Epilepsy: a randomised controlled, multi-centre clinical trial evaluating the clinical and cost-effectiveness of MATCH-ADTC in addition to usual care compared to usual care alone for children and young people with common mental health disorders and epilepsy-study protocol.

BACKGROUND: Mental health disorders in the context of long-term conditions in children and young people are currently overlooked and undertreated. Evidence-based psychological treatments for common childhood mental health disorders (anxiety, depression and disruptive behaviour disorders) have not been systematically evaluated in young people with epilepsy despite their high prevalence in this population. The aim of this multi-site randomised controlled trial is to determine the clinical and cost-effectiveness of adding a modular psychological intervention to usual care for the mental health disorders in comparison to assessment-enhanced usual care alone. METHODS: In total, 334 participants aged 3-18 years attending epilepsy services will be screened for mental health disorders with the Strengths and Difficulties Questionnaire (SDQ) and the diagnostic Development and Wellbeing Assessment (DAWBA). Those identified as having a mental health disorder and consenting to the trial will be randomised to either receive up to 22 sessions of the modular psychological intervention (MATCH-ADTC) delivered over the telephone over 6 months by non-mental health professionals in addition to usual care or to assessment-enhanced usual care alone. Outcomes will be measured at baseline, 6 months and 12 months post-randomisation. It is hypothesised that MATCH-ADTC plus usual care will be superior to assessment-enhanced usual care in improving emotional and behavioural symptoms. The primary outcome is the SDQ reported by parents at 6 months. Secondary outcomes include parent-reported mental health measures such as the Revised Children's Anxiety and Depression Scale, quality of life measures such as the Paediatric Quality of Life Inventory and physical health measures such as the Hague Seizure Severity Scale. Outcome assessors will be blinded to group assignment. Qualitative process evaluations and a health economic evaluation will also be completed. DISCUSSION: This trial aims to determine whether a systematic and integrated approach to the identification and treatment of mental health disorders in children and young people with epilepsy is clinically and cost-effective. The findings will contribute to policies and practice with regard to addressing mental health needs in children and young people with other long-term conditions. TRIAL REGISTRATION: ISRCTN ISRCTN57823197 . Registered on 25 February 2019

Addressing marine and coastal governance conflicts at the interface of multiple sectors and jurisdictions

Marine and coastal activities are closely interrelated, and conflicts among different sectors can undermine management and conservation objectives. Governance systems for fisheries, power generation, irrigation, aquaculture, marine biodiversity conservation, and other coastal and maritime activities are typically organized to manage conflicts within sectors, rather than across them. Based on the discussions around eight case studies presented at a workshop held in Brest in June 2019, this paper explores institutional approaches to move beyond managing conflicts within a sector. We primarily focus on cases where the groups and sectors involved are heterogeneous in terms of: the jurisdiction they fall under; their objectives; and the way they value ecosystem services. The paper first presents a synthesis of frameworks for understanding and managing cross-sectoral governance conflicts, drawing from social and natural sciences. We highlight commonalities but also conceptual differences across disciplines to address these issues. We then propose a novel analytical framework which we used to evaluate the eight case studies. Based on the main lessons learned from case studies, we then discuss the feasibility and key determinants of stakeholder collaboration as well as compensation and incentive schemes. The discussion concludes with future research needs to support policy development and inform integrated institutional regimes that consider the diversity of stakeholder interests and the potential benefits of cross-sectoral coordination

Community Development for Adaptation

Council-community engagement for a climate-impacted future – research brief. Many of New Zealand’s urban settlements are likely to be impacted by climate-induced hazards such as coastal erosion, flooding and rising groundwater levels. Affected communities will face physical, social, financial and emotional challenges. To ensure successful adaptation, local authorities will need to adopt new approaches to engagement with communities that are exposed to these hazards. This summary forms part of the research findings of the Climate-Adaptive Communities project of the Deep South National Science Challenge. We have drawn from the stories and insights shared with the research team by community members, iwi members and council staff