Juvenile salmon density on marsh surfaces versus within tidal channels

Use of tidal marsh surfaces by juvenile salmon in Pacific Northwest estuaries has generally been ignored by ecologists, engineers and planners involved in salmon habitat restoration. In contrast, fish use of marsh plains has been documented in many other parts of the world. Are Pacific Northwest marshes an exception to the pattern of fish use that is so common elsewhere? For three consecutive years, fish were sampled bi-monthly in tidal channels and on tidal marsh plains of the Skagit Delta to answer this question. Juvenile Chinook and chum salmon, as well as sticklebacks were the most consistently caught and abundant fish in channels and on the marsh surface, but eight other fish species were also found on the marsh surface. While fish densities were much higher in tidal channels than on marsh surfaces, marsh surface area was much greater than channel area, so sticklebacks and juvenile chum were potentially 50% more numerous on the marsh surface than in channels. However, due to their high channel densities, juvenile Chinook were nevertheless more abundant in tidal channels than on the marsh surface; those on the marsh surface amounted to 40% of those in tidal channels. The ratio of marsh surface to channel fish density peaks late in the season for all three fish species, which may be a response to increased prey production over the marsh plain. The substantial use of the marsh surface by juvenile salmon that we observed suggests estuarine habitat restoration for salmon recovery should not neglect the direct value of vegetated marsh plains to juvenile salmon. Tidal marsh habitat for juvenile salmon is more than just tidal channels. Partial habitat restoration that only restores tidal flow to channels and not to adjacent marshes, e.g., using self-regulating tide gates (SRTs), has a direct impact on juvenile salmon habitat use

Health and Housing Trends of Single Homeless Adults in Chittenden County, Vermont

Introduction. Homeless individuals are at an increased risk for both physical and mental health comorbidities compared to those with stable housing. Prior studies have demonstrated that many of these individuals do not seek or receive proper medical care. This study provides a landscape analysis of health characteristics in the single adult homeless population in Chittenden County, Vermont. Methods. Interviews were conducted using a modified version of the Vulnerability Index – Service Prioritization Decision Assistance Tool to determine vulnerability indices across a range of different health and social wellness domains. Single home- less adults were sampled from community self-help clinics and transitional living and homeless shelters from September to November 2017. Results. 56 in-person surveys were conducted. Mean age of participants was 45.3 years and over half were male (63%). Extended periods or multiple episodes of homelessness were experienced most by those who reported sleeping outdoors (89%); this group also reported the highest use of emergency services (47%). The highest incidence of abuse/trauma as a contributing factor for homelessness was reported most in the 18-30 age group (71%) and least in the above 51 age group (35%). Nearly all participants owned a cell phone (86%). Conclusions. Single homeless adults self-reported a variety of health and social is- sues, including substance abuse, increased emergency department use, and in- creased abuse, trauma, and deteriorated social relationships. This study highlights different risk factors that contribute to homelessness in this select population. Future research should evaluate how to individually address these vulnerabilities to optimize health care and well-being.https://scholarworks.uvm.edu/comphp_gallery/1255/thumbnail.jp

Assessing tidal marsh vulnerability to sea-level rise in the Skagit Delta

Historical aerial photos, from 1937 to the present, show Skagit Delta tidal marshes prograding into Skagit Bay throughout most of the record, but the progradation rates have been steadily declining and become negative in recent decades, i.e., the marshes have begun to erode. If past trends continue, the marshes will continue eroding despite the large suspended sediment load provided by the river. Within the bay-fringe region between the North and South Fork Skagit River distributaries, an area isolated from direct riverine sediment supply by anthropogenic blockage of historical distributaries, 0.5-m tall marsh cliffs along with concave marsh profiles indicate wave erosion is contributing to marsh retreat. This is further supported by a “natural experiment” provided by rocky outcrops that shelter high marsh in their lee, while being bounded by 0.5-m lower eroded marsh to windward and on either side. GIS analysis of the bay-fringe marsh indicates that relative to modern LIDAR data the seaward edge of the 1972 marsh (its maximal extent) was 15 cm lower in elevation than the 2012 marsh edge; this comparison assumes no change in marsh slope during the last 40 years. Tide gauge data show sea level rose 7.9 ± 4.6 cm during this time, suggesting sea level rise accounts for a substantial portion of the elevation difference, while erosion may have contributed to the rest. Coastal wetlands with high sediment supply are considered resilient to sea level rise, but the Skagit Delta shows this is not necessarily true. A combination of sea level rise and wave-generated erosion may overwhelm sediment supply. Additionally, constructed levees intensify river jet momentum thereby delivering most suspended sediment far offshore where it is unavailable for marsh accretion. Adaptive response to the threat of sea level rise should consider the efficacy of restoring historical distributaries and managed retreat of constrictive river levees to maximize sediment delivery to delta marshes

Introduction

Introduction to the assessing, planning and adapting to climate change Impacts in Skagit River watershed session of the Salish Sea Conference

Health professionals’ perspectives on delivering home and hospital management at diagnosis for children with type 1 diabetes: a qualitative study from the Delivering Early Care in Diabetes Evaluation (DECIDE) trial

Objective: To explore the delivery of home and hospital management at diagnosis of Type 1 diabetes in childhood and any impact this had on health professionals delivering care. Methods: This qualitative study was undertaken as part of the DECIDE randomised controlled trial where participants were individually randomised to receive initiation of management at diagnosis, to home or hospital. Semi-structured telephone interviews were planned with a purposive sample of health professionals involved with the delivery of home and hospital management, to include consultants, diabetes and research nurses, and dietitians from the eight UK centres taking part. The interview schedule focused on their experiences of delivering the two models of care; preferences, impact and future plans. Data were subject to Thematic Analysis. Results: Twenty two health professionals participated, represented by consultants, diabetes and research nurses, and dietitians. Overall, nurses preferred home management and perceived it to be beneficial in terms of facilitating a unique opportunity to understand family life and provide education to extended family members. Nurses described a special bond and lasting relationship that they developed with the home managed children and families. Consultants expressed concern that it jeopardised their relationship with families. Dietitians reported being unable to deliver short bursts of education to families in the home managed arm. All health professionals were equally divided over which was logistically easier to deliver. Conclusions: A hybrid approach, of a brief stay in hospital and early home management, offers a pragmatic solution to the advantages and challenges presented by both systems

Elite science and the BBC: a 1950s contest of ownership

In the late 1950s and early 1960s, the elite world of institutional British science attempted to take control of the BBC’s management of science broadcasting. Delegations of scientists met BBC managers to propose an increased role for scientists in planning science broadcasts to a degree that threatened to compromise the BBC’s authority and autonomy. The culmination was a set of proposals to the Pilkington Committee in 1960, principally from the Royal Society and the British Association for the Advancement of Science, under which a scientist-manager was to be appointed head of a unified science division in the BBC. BBC managers resisted these proposals. The outcome, in 1964, was a compromise giving the scientists little of what they wanted, and proving practically and strategically useful for the BBC. The article frames the story as a contest of jurisdiction between elite science and the BBC, and draws on scholarship relating to the social nature of authority and professions, and to the popularization of science. It shows the fundamentally different beliefs held by the scientists and the BBC about the purpose of science broadcasts and about the nature of the audience. The historical narrative is based on unpublished archive documents, and it contributes to the small but growing body of work on the historical background to the presentation of science in the broadcast media

Massively Parallel Signature Sequencing and Bioinformatics Analysis Identifies Up-Regulation of TGFBI and SOX4 in Human Glioblastoma

BACKGROUND: A comprehensive network-based understanding of molecular pathways abnormally altered in glioblastoma multiforme (GBM) is essential for developing effective therapeutic approaches for this deadly disease. METHODOLOGY/PRINCIPAL FINDINGS: Applying a next generation sequencing technology, massively parallel signature sequencing (MPSS), we identified a total of 4535 genes that are differentially expressed between normal brain and GBM tissue. The expression changes of three up-regulated genes, CHI3L1, CHI3L2, and FOXM1, and two down-regulated genes, neurogranin and L1CAM, were confirmed by quantitative PCR. Pathway analysis revealed that TGF- beta pathway related genes were significantly up-regulated in GBM tumor samples. An integrative pathway analysis of the TGF beta signaling network identified two alternative TGF-beta signaling pathways mediated by SOX4 (sex determining region Y-box 4) and TGFBI (Transforming growth factor beta induced). Quantitative RT-PCR and immunohistochemistry staining demonstrated that SOX4 and TGFBI expression is elevated in GBM tissues compared with normal brain tissues at both the RNA and protein levels. In vitro functional studies confirmed that TGFBI and SOX4 expression is increased by TGF-beta stimulation and decreased by a specific inhibitor of TGF-beta receptor 1 kinase. CONCLUSIONS/SIGNIFICANCE: Our MPSS database for GBM and normal brain tissues provides a useful resource for the scientific community. The identification of non-SMAD mediated TGF-beta signaling pathways acting through SOX4 and TGFBI (GENE ID:7045) in GBM indicates that these alternative pathways should be considered, in addition to the canonical SMAD mediated pathway, in the development of new therapeutic strategies targeting TGF-beta signaling in GBM. Finally, the construction of an extended TGF-beta signaling network with overlaid gene expression changes between GBM and normal brain extends our understanding of the biology of GBM

Constructing the 'child at risk' in social work reports: a way of seeing is a way of not seeing

In the context of the changing relationship between children, parents and the welfare state, professionals have to deal with notions of the “child at risk”. In child welfare and protection, the issue of normative judgement in (risk) assessment and documentation is an essential area for exploration for social workers. We examine the practice of report writing in which future professionals exercise power while assessing, documenting, and judging the child as “at risk”. We report on a study about a fictional social work case conducted with 152 students in Belgium, in which we developed a rhetorical analysis of the “terministic screens” used in writing reports

Experimental evidence of genome-wide impact of ecological selection during early stages of speciation-with-gene-flow

Theory predicts that speciation-with-gene-flow is more likely when the consequences of selection for population divergence transitions from mainly direct effects of selection acting on individual genes to a collective property of all selected genes in the genome. Thus, understanding the direct impacts of ecologically based selection, as well as the indirect effects due to correlations among loci, is critical to understanding speciation. Here, we measure the genome-wide impacts of host-associated selection between hawthorn and apple host races of Rhagoletis pomonella (Diptera: Tephritidae), a model for contemporary speciation-with-gene-flow. Allele frequency shifts of 32 455 SNPs induced in a selection experiment based on host phenology were genome wide and highly concordant with genetic divergence between co-occurring apple and hawthorn flies in nature. This striking genome-wide similarity between experimental and natural populations of R. pomonella underscores the importance of ecological selection at early stages of divergence and calls for further integration of studies of eco-evolutionary dynamics and genome divergence

The effect of the Talking Diabetes consulting skills intervention on glycaemic control and quality of life in children with type 1 diabetes: cluster randomised controlled trial (DEPICTED study)

Objective To evaluate the effectiveness on glycaemic control of a training programme in consultation skills for paediatric diabetes teams