Quantitative estimates of fish abundance from boat electrofishing

Multiple removals by boat electro-fishing were used to estimate fish populations in non-wadeable habitats in New Zealand lakes and rivers. Mean capture probability was 0.47±h0.10 (± 95% CI) from 35 population estimates made with 2-7 successive removals. The relationship between the population estimate from the Zippin method (Y)and the number of fish caught in the first removal (X) was significant (adjusted r2=0.84, P<0.001; Figure 2). The least-squares regression was Y = 1.55X 1.23. Mean density ± 95% confidence interval for 13 fishing occasions was 30±27 fish 100 m- 2. Mean biomass of fish for sites was 78±39 g m-2 (range 29 to 245 g m-2). Koi carp comprised the largest proportion of the fish biomass wherever they were present. The high biomasses of koi carp estimated in these results (mean 56±33 g m-2) suggest that they can reach problematic abundances in New Zealand. Bioniass of spawning koi carp can exceed 400 g m-2

Association between Serum 25-Hydroxy Vitamin D Levels and the Prevalence of Adult-Onset Asthma

The major circulating metabolite of vitamin D (25(OH)D) has been implicated in the pathogenesis for atopic dermatitis, asthma and other allergic diseases due to downstream immunomodulatory effects. However, a consistent association between 25(OH)D and asthma during adulthood has yet to be found in observational studies. We aimed to test the association between 25(OH)D and asthma during adulthood and hypothesised that this association would be stronger in non-atopic participants. Using information collected on the participants of the 1958 birth cohort, we developed a novel measure of atopic status using total and specific IgE values and reported history of eczema and allergic rhinitis. We designed a nested case-control analysis, stratified by atopic status, and using logistic regression models investigated the association between 25(OH)D measured at age 46 years with the prevalence of asthma and wheezy bronchitis at age 50 years, excluding participants who reported ever having asthma or wheezy bronchitis before the age of 42. In the fully adjusted models, a 10 nmol/L increase in serum 25(OH)D prevalence had a significant association with asthma (aOR 0.94; 95% CI 0.88&ndash;1.00). There was some evidence of an atopic dependent trend in the association between 25(OH)D levels and asthma. Further analytical work on the operationalisation of atopy status would prove useful to uncover whether there is a role for 25(OH)D and other risk factors for asthma

A multi-species modelling approach to examine the impact of alternative climate change adaptation strategies on range shifting ability in a fragmented landscape

An individual-based model of animal dispersal and population dynamics was used to test the effects of different climate change adaptation strategies on species range shifting ability, namely the improvement of existing habitat, restoration of low quality habitat and creation of new habitat. These strategies were implemented on a landscape typical of fragmentation in the United Kingdom using spatial rules to differentiate between the allocation of strategies adjacent to or away from existing habitat patches. The total area being managed in the landscape was set at realistic levels based on recent habitat management trends. Eight species were parameterised to broadly represent different stage structure, population densities and modes of dispersal. Simulations were initialised with the species occupying 20% of the landscape and run for 100 years. As would be expected for a range of real taxa, range shifting abilities were dramatically different. This translated into large differences in their responses to the adaptation strategies. With conservative (0.5%) estimates of the area prescribed for climate change adaptation, few species display noticeable improvements in their range shifting, demonstrating the need for greater investment in future adaptation. With a larger (1%) prescribed area, greater range shifting improvements were found, although results were still species-specific. It was found that increasing the size of small existing habitat patches was the best way to promote range shifting, and that the creation of new stepping stone features, whilst beneficial to some species, did not have such broad effect across different species

Pollen exposure and hospitalization due to asthma exacerbations: daily time series in a European city.

Exposure to pollen can contribute to increased hospital admissions for asthma exacerbation. This study applied an ecological time series analysis to examine associations between atmospheric concentrations of different pollen types and the risk of hospitalization for asthma in London from 2005 to 2011. The analysis examined short-term associations between daily pollen counts and hospital admissions in the presence of seasonal and long-term patterns, and allowed for time lags between exposure and admission. Models were adjusted for temperature, precipitation, humidity, day of week, and air pollutants. Analyses revealed an association between daily counts (continuous) of grass pollen and adult hospital admissions for asthma in London, with a 4-5-day lag. When grass pollen concentrations were categorized into Met Office pollen 'alert' levels, 'very high' days (vs. 'low') were associated with increased admissions 2-5 days later, peaking at an incidence rate ratio of 1.46 (95%, CI 1.20-1.78) at 3 days. Increased admissions were also associated with 'high' versus 'low' pollen days at a 3-day lag. Results from tree pollen models were inconclusive and likely to have been affected by the shorter pollen seasons and consequent limited number of observation days with higher tree pollen concentrations. Future reductions in asthma hospitalizations may be achieved by better understanding of environmental risks, informing improved alert systems and supporting patients to take preventive measures

Data mashups: potential contribution to decision support on climate change and health.

notes: PMCID: PMC3945564This is a freely-available open access publication. Please cite the published version which is available via the DOI link in this record.Linking environmental, socioeconomic and health datasets provides new insights into the potential associations between climate change and human health and wellbeing, and underpins the development of decision support tools that will promote resilience to climate change, and thus enable more effective adaptation. This paper outlines the challenges and opportunities presented by advances in data collection, storage, analysis, and access, particularly focusing on "data mashups". These data mashups are integrations of different types and sources of data, frequently using open application programming interfaces and data sources, to produce enriched results that were not necessarily the original reason for assembling the raw source data. As an illustration of this potential, this paper describes a recently funded initiative to create such a facility in the UK for use in decision support around climate change and health, and provides examples of suitable sources of data and the purposes to which they can be directed, particularly for policy makers and public health decision makers.UK Medical Research CouncilUK Natural Environment Research CouncilEuropean Regional Development Fund Programme 2007 to 2013European Social Fund Convergence Programme for Cornwall and the Isles of Scill

Little Capitalists: The Social Economy of Saving in the United States, 1816-1914

In the early nineteenth-century United States, many social reformers, public commentators, and legislators argued that workers must engage in prudent financial planning in order to remain independent in a capitalist economy. Their belief that personal mismanagement was the primary cause of poverty led some of them to create the first financial institutions to help Americans of limited means save and invest their earnings: savings banks. From this modest start rose both a widespread ideology that related personal financial practice to personal virtue and a multibillion dollar industry that used the savings of millions of American workers to finance government, business, and personal debt. "Little Capitalists" charts this evolution from the philanthropic savings banks of the early-nineteenth century to the myriad commercial, cooperative, and public financial institutions for the working classes of the early-twentieth century. It shows how conceptions of individual and civic responsibility interacted with actual savings practices to integrate American workers into the national economy, building the financial apparatus that funded the expansion of wage-labor capitalism by harnessing the capital of wage laborers themselves. American institutional savings pioneers sought to address increased poverty wrought by urban growth and the creation of a wage-earning class in the first half of the nineteenth century. These reformers organized the country's original savings banks on the premise that all workers were capable of saving some of their earnings--no matter how little--so that they could remain financially independent in times of unemployment, injury, or old age. Their institutions tried to teach workers how to save money by providing secure facilities in which they could do so in the small amounts that no other financial institutions would handle. They also offered depositors a chance to earn a small profit from interest paid on deposits. Because this interest derived from investing those deposits in securities, mortgages, and other loans, savings banks brought millions of nineteenth-century wage earners into the American economy as investors. In this way, these institutions promoted the idea that working-class depositors could be their own "capitalists." As more Americans saved growing amounts, legislators, political economists, social reformers, and other observers took it as evidence that any worker who exercised virtues like thrift and self-denial could save money. Because generations of Americans viewed these personal attributes as the bases of moral civilization, they increasingly looked to savings institutions to foster a better citizenry and nation. The US Congress chartered the Freedman's Savings and Trust Company after the Civil War not only to provide financial services to former slaves but also to train them for a life of citizenship grounded in the principles of free labor ideology. Likewise, a nationwide movement beginning in the late-nineteenth century brought together governments, educators, and bankers to create a system of school savings banks to inculcate virtue in children by teaching them how to save pennies and nickels. In both cases, the point was to mold a working class steeped in the social, political, and moral values that would make them amenable to the emerging system of wage-labor capitalism. Even as some savings institutions attempted social indoctrination, workers' growing deposits also demonstrated their financial power. From the 1870s to the 1910s, this motivated entrepreneurs and legislators to design and encourage new institutions to collect savings deposits and invest them widely, including: industrial life insurance firms, employee thrift plans, trust company and commercial bank savings departments, and a postal savings system. Meanwhile, organizations like building and loan associations slowly added the extension of working-class credit to the collection of working-class savings. These new institutions gave many Americans increased discretion over how to save (and spend) money. But as they began to utilize them, workers also became a significant component of the nation's for-profit finance economy as both creditors and debtors. In the process, they assumed new financial risk. "Little Capitalists" outlines this history. It shows how a group of social experiments designed to foster an independent working class in the early-nineteenth century spawned, by the second decade of the twentieth century, both an ideology of saving at the center of popular perceptions about good citizenship and a small finance industry that was indispensable to the American economy

An exploratory study on how workplace bullying is conceptualised in the Australasian media

Workplace bullying continues to be a prominent issue in both New Zealand and Australian workplaces. Victims of workplace bullying suffer a multitude of grievances on a personal and working level, reducing their job satisfaction and job performance, whilst increasing levels of absenteeism and likelihood of quitting the organisation. An organisation which enables workplace bullying to remain unresolved is breaching legal statutes in Australasia, which require that employers provide a safe environment for their workers. This paper reports on an analysis of some 200 media articles from Australasia regarding the issue of workplace bullying, with a view to understanding how bullying is represented in the media. From a work-environment hypothesis view, the analysis sought to determine whether bullying was portrayed as predominantly a product of the work environment, or as a largely interpersonal concern. The findings of this paper suggest that although reports of the words “culture” and “environment” are present, particularly in New Zealand articles, there is little evidence from media accounts to indicate that Australasian sources perceive the issue of workplace bullying as one that is derivative from an organisation’s workplace environment. The implications of this finding indicate that Australasian media sources are placing the blame of bullying behaviours on the actions of employees, rather than holding organisations responsible for creating an environment that enables workplace bullying behaviours to occur

Speech and language therapy for aphasia following stroke

Background  Aphasia is an acquired language impairment following brain damage that affects some or all language modalities: expression and understanding of speech, reading, and writing. Approximately one third of people who have a stroke experience aphasia.  Objectives  To assess the effects of speech and language therapy (SLT) for aphasia following stroke.  Search methods  We searched the Cochrane Stroke Group Trials Register (last searched 9 September 2015), CENTRAL (2015, Issue 5) and other Cochrane Library Databases (CDSR, DARE, HTA, to 22 September 2015), MEDLINE (1946 to September 2015), EMBASE (1980 to September 2015), CINAHL (1982 to September 2015), AMED (1985 to September 2015), LLBA (1973 to September 2015), and SpeechBITE (2008 to September 2015). We also searched major trials registers for ongoing trials including ClinicalTrials.gov (to 21 September 2015), the Stroke Trials Registry (to 21 September 2015), Current Controlled Trials (to 22 September 2015), and WHO ICTRP (to 22 September 2015). In an effort to identify further published, unpublished, and ongoing trials we also handsearched theInternational Journal of Language and Communication Disorders(1969 to 2005) and reference lists of relevant articles, and we contacted academic institutions and other researchers. There were no language restrictions.  Selection criteria  Randomised controlled trials (RCTs) comparing SLT (a formal intervention that aims to improve language and communication abilities, activity and participation) versus no SLT; social support or stimulation (an intervention that provides social support and communication stimulation but does not include targeted therapeutic interventions); or another SLT intervention (differing in duration, intensity, frequency, intervention methodology or theoretical approach).  Data collection and analysis  We independently extracted the data and assessed the quality of included trials. We sought missing data from investigators.  Main results  We included 57 RCTs (74 randomised comparisons) involving 3002 participants in this review (some appearing in more than one comparison). Twenty-seven randomised comparisons (1620 participants) assessed SLT versus no SLT; SLT resulted in clinically and statistically significant benefits to patients' functional communication (standardised mean difference (SMD) 0.28, 95% confidence interval (CI) 0.06 to 0.49, P = 0.01), reading, writing, and expressive language, but (based on smaller numbers) benefits were not evident at follow-up. Nine randomised comparisons (447 participants) assessed SLT with social support and stimulation; meta-analyses found no evidence of a difference in functional communication, but more participants withdrew from social support interventions than SLT. Thirty-eight randomised comparisons (1242 participants) assessed two approaches to SLT. Functional communication was significantly better in people with aphasia that received therapy at a high intensity, high dose, or over a long duration compared to those that received therapy at a lower intensity, lower dose, or over a shorter period of time. The benefits of a high intensity or a high dose of SLT were confounded by a significantly higher dropout rate in these intervention groups. Generally, trials randomised small numbers of participants across a range of characteristics (age, time since stroke, and severity profiles), interventions, and outcomes.  Authors' conclusions  Our review provides evidence of the effectiveness of SLT for people with aphasia following stroke in terms of improved functional communication, reading, writing, and expressive language compared with no therapy. There is some indication that therapy at high intensity, high dose or over a longer period may be beneficial. HIgh-intensity and high dose interventions may not be acceptable to all

A novel approach to understanding the role of plasma-molecular kinetics in detachment in the MAST-U and TCV tokamak divertors, and its impact on power exhaust.

This work investigates the role of plasma-molecule collisions in the divertors of the MAST-U and TCV tokamaks during detachment across a wide range of conditions (divertor shape, baffling, fuelling location, isotope species and power). Experimental data is obtained from both devices and, in particular, high resolution Fulcher band spectroscopy is used to examine the evolution of the rotational and vibrational distributions of the molecules during detachment. The rotational temperature achieved by the D2 (and H2) molecules is related to the length of time during which they undergo collisions (particularly with the ions) in the plasma. In “hot” ionising plasma conditions (Te >∼ 5eV), this is limited by their lifetime before dissociation and, in "cold” conditions (Te <∼ 3−5eV), their transit time through the plasma. As such, the temperatures reached by the molecules may increase significantly, by ∼1000s of K during detachment, and decay again in the most deeply detached (cold) conditions. It is found to be possible to use this rotational temperature, along with measurements of the ionisation front position (volume of the neutral cloud below the front) and measurements of the divertor neutral pressure (molecular density), to estimate power losses from the plasma due to elastic collisions between the ions and the molecules. These losses are significant (∼ 10% of PSOL) in long-legged, strongly baffled, detached, MAST-U Super-X divertors. Momentum losses can also be inferred from these measurements, and may account for highly significant (majority) pressure loss in strongly detached plasmas. These estimates are also found to be consistent with SOLPS-ITER simulations. The measured vibrational distribution is found to be non-Boltzmann in the ground state. It has the same characteristic shape under all conditions on MAST-U and TCV, and undergoes a similar elevation of the ν = 2,3 bands (in the upper Fulcher state) at, or soon after, detachment. Attempts to reconstruct the vibrational distribution using an Eirene-like collisional-radiative model setup shows some agreement with the data, but also some disagreements indicating possible gaps in the model and the need for further research. In magnetic confinement fusion, the power exhaust problem, and the necessity to be able to achieve and maintain reliable plasma detachment in the running of future reactors in order to resolve this, remains a significant issue. Predicting power and momentum loss will be crucial in this endeavour. It is known that the role of molecules in detachment is likely to be highly significant in these devices, especially those with long-legged and/or strongly baffled divertors such as SPARC, ARC and STEP. This work shows this experimentally and provides a much clearer understanding of this role, highlighting the importance of molecules as energy and momentum sinks in the detachment process