Predicting areas important for ecological connectivity throughout Canada.

Governments around the world have acknowledged that urgent action is needed to conserve and restore ecological connectivity to help reverse the decline of biodiversity. In this study we tested the hypothesis that functional connectivity for multiple species can be estimated across Canada using a single, upstream connectivity model. We developed a movement cost layer with cost values assigned using expert opinion to anthropogenic land cover features and natural features based on their known and assumed effects on the movement of terrestrial, non-volant fauna. We used Circuitscape to conduct an omnidirectional connectivity analysis for terrestrial landscapes, in which the potential contribution of all landscape elements to connectivity were considered and where source and destination nodes were independent of land tenure. Our resulting map of mean current density provided a seamless estimate of movement probability at a 300 m resolution across Canada. We tested predictions in our map using a variety of independently collected wildlife data. We found that GPS data for individual caribou, wolves, moose, and elk that traveled longer distances in western Canada were all significantly correlated with areas of high current densities. The frequency of moose roadkill in New Brunswick was also positively associated with current density, but our map was not able to predict areas of high road mortality for herpetofauna in southern Ontario. The results demonstrate that an upstream modelling approach can be used to characterize functional connectivity for multiple species across a large study area. Our national connectivity map can help governments in Canada prioritize land management decisions to conserve and restore connectivity at both national and regional scales.

High altitude hunting, climate change, and pastoral resilience in eastern Eurasia.

The transition from hunting to herding transformed the cold, arid steppes of Mongolia and Eastern Eurasia into a key social and economic center of the ancient world, but a fragmentary archaeological record limits our understanding of the subsistence base for early pastoral societies in this key region. Organic material preserved in high mountain ice provides rare snapshots into the use of alpine and high altitude zones, which played a central role in the emergence of East Asian pastoralism. Here, we present the results of the first archaeological survey of melting ice margins in the Altai Mountains of western Mongolia, revealing a near-continuous record of more than 3500 years of human activity. Osteology, radiocarbon dating, and collagen fingerprinting analysis of wooden projectiles, animal bone, and other artifacts indicate that big-game hunting and exploitation of alpine ice played a significant role during the emergence of mobile pastoralism in the Altai, and remained a core element of pastoral adaptation into the modern era. Extensive ice melting and loss of wildlife in the study area over recent decades, driven by a warming climate, poaching, and poorly regulated hunting, presents an urgent threat to the future viability of herding lifeways and the archaeological record of hunting in montane zones.

Interventions to support Choosing Wisely for coagulation studies in the emergency department.

OBJECTIVE: To evaluate the effectiveness of two different strategies designed to facilitate implementation of Choosing Wisely Australia guidelines, aiming to reduce unnecessary coagulation study blood tests in patients presenting to a metropolitan hospital ED. METHOD: In this real-world quality improvement study, the first intervention tested was an education strategy. The second intervention was physically removing coagulation pathology tubes from the bedside trolleys in the ED. Data were collected about clinical appropriateness of testing, as per the Choosing Wisely Australia guideline and total volume of coagulation studies ordered. RESULTS: No reduction in inappropriate coagulation testing was observed following the education intervention whereas a significant reduction in inappropriate coagulation testing was seen after the second intervention (inappropriate testing reduced from 73.8% to 53.0%). CONCLUSION: Physically removing coagulation pathology tubes from the trolleys was found to be effective at reducing unnecessary testing.

Over-ordering of ultrasound and pre-operative investigations for inguinal hernia repair at Northern Health: a Choosing Wisely audit.

BACKGROUND: Choosing Wisely Australia is an initiative aimed at reducing the incidence of unnecessary investigations. This study is an audit of Northern Health's adherence to two Choosing Wisely recommendations in the context of inguinal hernia repair. Recommendation 1: Avoid routinely performing pre-operative investigations in patients, but instead order in response to patient factors, signs and symptoms, disease or planned surgery. Recommendation 2: Do not order ultrasound for clinically apparent inguinal hernias. METHODS: Records of 264 patients who underwent elective inguinal hernia repair at Northern Health in 2016 were reviewed. RESULTS: Recommendation 1: Results demonstrated over-ordering of coagulation studies. Thirty-four percent of patients received coagulation studies, 86% of which were unindicated. There was better adherence to Choosing Wisely guidelines for other investigations: 38% of patients received a full blood examination (42% unindicated), 38% received a urea, electrolytes and creatinine (14% unindicated), 7% received a glycated haemaglobin (0% unindicated) and 38% received an electrocardiogram (11% unindicated). Recommendation 2: Seventy percent (n = 186) of patients received an ultrasound of which 25% (n = 46) had a documented indication. Correlation with surgical findings showed a positive predictive value of 95.6% and sensitivity of 97.8% for ultrasound. CONCLUSION: Recommendation 1: Most pre-operative coagulation studies were unindicated, while adherence to Choosing Wisely guidelines was better for pre-operative full blood examination, urea, electrolytes and creatinine, glycated haemaglobin and electrocardiogram. Recommendation 2: The majority of patients received an inguinal hernia ultrasound, most of which had no documented indication.

Improving the utility of multisource feedback for medical consultants in a tertiary hospital: a study of the psychometric properties of a survey tool.

Objective The aim of this study was to investigate the psychometric properties of a multisource review survey tool for medical consultants in an Australian health care setting. Methods Two sets of survey data from a convenience sample of medical consultants were analysed using SPSS, comprising self-assessment data from 73 consultants and data from 734 peer reviewers. The 20-question survey consisted of three subscales, plus an additional global question for reviewers. Analysis included the reliability coefficient (α) of the scale and the three subscales, inter-rater reliability or agreement and validity of the model, correlation between the single global question, the total performance score and the three survey subfactors (Pearson's), interrater agreement (rWG(J)), the optimal number of peer reviewers required and model-based reliability (ρ). Results The global question, total performance score and the three subfactors were strongly correlated (general scale r=0.81, clinical subscale r=0.78, humanistic subscale r =0.74, management subscale r=0.75; two-tailed P<0.01 for all). The scale showed very good internal consistency, except for the five-question management subscale. Model-based reliability was excellent (ρ=0.93). Confirmatory factor analysis showed the model fit using the 20-item scale was not satisfactory (minimum discrepancy/d.f.=7.70; root mean square error of approximation=0.10; comparative fit index=0.79; Tucker-Lewis index=0.76). A modified 13-item model provided a good fit. Using the 20-item scale, a 99% level of agreement could be achieved with eight to 10 peer reviewers; for the same level of agreement, the number of reviewers increased to >10 using a revised 13-item scale. Conclusions Overall, the 20-item multisource review survey tool showed good internal consistency reliability for both self and peer ratings; however, further investigation using a larger dataset is needed to analyse the robustness of the model and to clarify the role that a single global question may play in future multisource review processes. What is known about the topic? Defining and measuring skills and behaviours that reflect competence in the health setting have proven to be complex, and this has resulted in the development of specific multisource feedback surveys for individual medical specialities. Because little literature exists on multisource reviews in an Australian context, a pilot study of a revised survey tool was undertaken at an Australian tertiary hospital. What does this paper add? The aim of this study was to investigate the psychometric properties of a generic tool (used across specialities) by assessing the validity, reliability and interrater reliability of the scale and to consider the contribution of a single global question to the overall multisource feedback process. This study provides evidence of the validity and reliability of the survey tool under investigation. The strong correlation between the global item, the total performance score and the three subfactors suggests that this is an area requiring further investigation to determine the role that a robust single global question like this may play in future multisource review surveys. Our five-question management skills subscale provides answers to questions relevant to the specific organisation surveyed, and we anticipate that it may serve to stimulate further exploration in this area. What are the implications for practitioners? The survey tool may provide a valid and reliable basis for performance review of medical consultants in an Australian healthcare setting.

Seed-caching responses to substrate and rock cover by two Peromyscus species: implications for pinyon pine establishment.

We examined whether pinyon mice ( Peromyscus truei) and brush mice ( P. boylii) could act as directed dispersal agents of pinyon pine ( Pinus edulis) through differential responses to soil particle size and rock cover. In field experiments, we allowed mice to either cache pinyon seeds or recover artificially cached seeds (pilfer) from quadrats containing large- or small-particle soils. Both species placed most (70%) seed caches in small-particle soil. Pilfering was the same from both particle sizes in the first year, while more seeds were pilfered from large-particle soils in the second year. In separate experiments, rock cover interacted with soil particle size, with both species placing over 50% of their caches in small-particle soil with rock cover. Overall, we found greater seed-caching in small-particle soils near rocks, with equal or lower pilfering from small-particle soils, suggesting more seeds would survive in small-particle soils near rock cover. Three lines of evidence supported the hypothesis that mice could act as directed dispersers by moving pinyon seeds to beneficial microsites for germination and establishment. First, in greenhouse experiments, pinyon seed germination was 4 times greater in small-particle soil cores than in large-particle soil cores. Second, soils near rocks had significantly higher water content than areas of open soil at the driest time of the year, a critical factor for seedling survival in the arid southwestern USA. Third, 75% of juvenile pinyon trees were growing in small-particle soils, and 45% were growing near rock nurses.