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Migrant and refugee parents considering raising their children in their non-mainstream home language often fear that this decision may impact negatively on their children's English language ability and thus affect their academic prospects. The lack of institutional support for home languages in the Australian school system, and the well-intentioned but misguided advice parents may receive to switch to the mainstream language in family interactions reinforce parents' doubts. To assuage parents' concerns and assist them in making an informed decision most appropriate for their family circumstances, we developed and delivered free workshops on bilingual upbringing. We also trained bilingual facilitators who adapted the workshops culturally and linguistically and conducted these in their own communities. This paper discusses these workshops, the feedback received, our observations, and lessons learned.

This article examines how early career teachers, participants in a research project, make sense of their experiences through storytelling. The teachers' stories provide a significant counterpoint to the way standards-based reforms construct their professional development, prompting us as teacher educators to think again about what it means for our students to make the transition from initial teacher education into the institutional setting of a school. We draw on Ricoeur's understanding of narrative to show the complexity of the identity work they perform and how their stories position them as authorities when it comes to the experience of beginning teaching and of negotiating a pathway within existing policy environments. Close attention to the language of these narratives produces rich insights into early career teachers' experiences and raises questions as to how researchers might solicit and respond to such narratives.

Home language literacy education in Australia has been pursued predominantly through Community Language Schools. At present, some 1,000 of these, attended by over 100,000 school-age children, cater for 69 of the over 300 languages spoken in Australia. Despite good intentions, these schools face a number of challenges. For instance, children may lack motivation and perceive after-hours schooling as an unnecessary burden. Trained teachers and suitable teaching materials are often not available. Moreover, not every language can be offered in each city or region. Hence, home language speakers' needs are often not met. This situation has detrimental effects for children, families and communities, and entails a loss of opportunities for the country. Reporting on an alternative approach, this paper presents a pilot study conducted in Australia with English-German bilinguals. We sought to investigate whether primary school-aged children can self-direct their home language literacy acquisition through playing online educational games in the privacy of their homes and with little adult input. Results indicate that the games can be effective in promoting emergent literacy development. Thus, such a grassroots approach could become a viable option for multilingual societies, addressing some of the practical challenges faced by, for instance, Community Language Schools.

Australia is a country of high linguistic diversity, with more than 300 languages spoken. Today, 19% of the population aged over 5 years speak a language other than English at home. Against this background, we examine government policies and prominent initiatives developed at national level in the past 30 years to address the challenge of offering "Literacy for all", in particular focusing on minority language speaking children. Across the examined policies and initiatives, a distinct negative correlation can be observed: the more multilingual Australia has become, the more assimilationist the policies, and the more monolingual the orientation of the society that governments have sought to establish through policy. We argue that to enhance literacy outcomes more generally, this orientation needs to be reversed. We explain why policy understanding and approach need to instead promote the maintenance of home languages and support literacy acquisition in these languages.

In this paper, we challenge the current focus on "best practice", graduate teacher tests, and student test scores as the panacea for ensuring teaching quality and argue for ways of thinking about evidence of quality beginning teaching outside and beyond the current neoliberal accountability discourses circulating in Australia and other countries. We suggest that teacher educators need to reinsert themselves as key players in the debates around quality beginning teaching, rather than being viewed as a source of the problem. To enable teacher educators to assume accountability for quality beginning teachers, we propose the framework of a capstone teacher performance assessment--a structured portfolio called the Authentic Teacher Assessment (ATA)--and examine examples of these assessments through the lens of critical discourse analysis. As a measure of "readiness to teach", the ATA is compared with supervising teachers' assessments of preservice teachers. We argue that structured portfolios that include artefacts derived from preservice teachers' practice in classrooms along with graduate teacher self assessments provide a stronger accountability measure of effective beginning teaching and demonstrably address the current anxiety regarding "evidence". We suggest that such an approach should be reliable enough to be "read" by external assessors (and moderated across other teacher education institutions). Rigorous research on a national basis is called for in order to develop and implement a structured portfolio as rich evidence of graduates' quality and readiness to teach.

The aim of this study is to examine the strategies majority language-speaking parents use to support the development of the minority language in families who follow the pattern of exposure known as one-parent-one-language (OPOL). In this particular pattern of raising a child bilingually, each parent speaks only their own native language to their children. Previous studies concerned with language development in children raised under the OPOL pattern primarily focused on how input from the minority language-speaking parent affects minority language development, leaving the role of the majority language-speaking parent largely unexplored. To address this gap, a case study was carried out on three families in Brisbane, Australia, who reported following the OPOL pattern. Video and audio recordings were taken, along with interviews using an elicited recall task based on the recordings to gather data on the families' language practices and motivations. The results of the qualitative analysis suggest that, in these families, the majority language-speaking parent plays an important role that extends beyond the provision of input in the majority language and may contribute to fostering minority language development and maintenance.

This article reports on a pilot study that investigated the beliefs, values, and pedagogies of experienced high school teachers who worked with student populations of non-English speaking and economically disadvantaged immigrants or refugees in Australia. Qualitative research methods, including focus groups and in-depth individual interviews with teachers, produced data that were examined using Critical Discourse Analysis. Close reading of the teachers' comments suggests that there are a number of key discourses that teachers use to make sense of differences among culturally diverse and economically disadvantaged groups of students. Specifically, teachers distinguish between cultural groups on the basis of students' life experiences prior to arrival in Australia; students' collective and individual educational experiences; and the different social class positioning of students within the same ethnic group. In their comments, teachers at times categorised students in generalised and stereotypical ways but also were able to critique and reflect on their personal assumptions. An analysis of the teachers' reflections provides insights into how they made sense of "diversity" and how, as teachers, they try to work productively with ethnically diverse and economically disadvantaged students. (Contains 4 notes.)

While for political, economic and social justice reasons, there is now an emphasis on ensuring that all children achieve educationally, including those whose ethnicity, "race" or socio-economic status are different from the dominant culture, multiple and often contradictory discourses operate concerning how teachers should work with diversity. Within post-structural theories, "race", socio-economic status, gender and ethnicity are theorised as fluid, dynamic and interconnected categories of identity. In this article, working with post-structuralist concepts including notions of "discourse", "subjectivities", and "investments", I briefly review a number of discourses around identities and difference that play out within education, particularly in Australia, but with reference to research in North America, and the United Kingdom as well. I then draw on research data to present a case study of one teacher's perspective on diversity. Using his childhood experiences of being both an "insider" and "outsider" in mainstream culture, I speculate on how his subjectivities shape and are shaped by his professional identity and relations with students. I discuss his understanding of diversity and of socially just pedagogies in light of current discourses and consider some implications for how teacher education might develop richer, more complex understandings of diversity. (Contains 4 notes.)

This article considers Bourdieu's concepts of "social capital" and "social fields", comparing and contrasting his use of these concepts with that of James Coleman and Robert Putnam. It examines how Bourdieu's ideas offer a different way of understanding the lives of economically disadvantaged young women designated as "at risk" of leaving school early. A micro-level analysis is made of "Bluey's story", a narrative derived from data gathered during a three-year research project on young women's negotiations from the margins of education and work in Australia. Deconstructing Bluey's narrative reveals how social capital is deployed (sometimes unsuccessfully) in a range of social fields. Such narratives can thus be used to "speak back" to educational policies, to provide alternative insights into the issues and needs of economically disadvantaged young women and to challenge current constructs of "at risk". (Contains 3 notes.)

"Least‐cost theory" posits that C3 plants should balance rates of photosynthetic water loss and carboxylation in relation to the relative acquisition and maintenance costs of resources required for these activities. Here we investigated the dependency of photosynthetic traits on climate and soil properties using a new Australia‐wide trait dataset spanning 528 species from 67 sites. We tested the hypotheses that plants on relatively cold or dry sites, or on relatively more fertile sites, would typically operate at greater CO2 drawdown (lower ratio of leaf internal to ambient CO2, Ci:Ca) during light‐saturated photosynthesis, and at higher leaf N per area (Narea) and higher carboxylation capacity (Vcmax 25) for a given rate of stomatal conductance to water vapour, gsw. These results would be indicative of plants having relatively higher water costs than nutrient costs. In general, our hypotheses were supported. Soil total phosphorus (P) concentration and (more weakly) soil pH exerted positive effects on the Narea–gsw and Vcmax 25–gsw slopes, and negative effects on Ci:Ca. The P effect strengthened when the effect of climate was removed via partial regression. We observed similar trends with increasing soil cation exchange capacity and clay content, which affect soil nutrient availability, and found that soil properties explained similar amounts of variation in the focal traits as climate did. Although climate typically explained more trait variation than soil did, together they explained up to 52% of variation in the slope relationships and soil properties explained up to 30% of the variation in individual traits. Soils influenced photosynthetic traits as well as their coordination. In particular, the influence of soil P likely reflects the Australia's geologically ancient low‐relief landscapes with highly leached soils. Least‐cost theory provides a valuable framework for understanding trade‐offs between resource costs and use in plants, including limiting soil nutrients. [ABSTRACT FROM AUTHOR]

Nassella neesiana(Chilean needle grass) is a South American grass species that is a serious weed in Australia and New Zealand. The rust fungusUromyces pencanusis a promising biocontrol agent that could be used to control the weed in both countries. Extensive host range testing has been conducted to explore the specificity of the rust. In this paper we discuss the different degrees of invasion by the rust of the tissues of target and non-target species; the plant defences elicited by such invasion at the cellular level; and their relevance to the biological control of Chilean needle grass. [ABSTRACT FROM PUBLISHER]

The Australian Computational and Linguistics Olympiad (OzCLO) started in 2008 in only two locations and has since grown to a nationwide competition with almost 1500 high school students participating in 2013. An Australian team has participated in the International Linguistics Olympiad (IOL) every year since 2009. This paper describes how the competition is run (with a regional first round and a final national round) and the organisation of the competition (a National Steering Committee and Local Organising Committees for each region) and discusses the particular challenges faced by Australia (timing of the competition and distance between the major population centres). One major factor in the growth and success of OzCLO has been the introduction of the online competition, allowing participation of students from rural and remote country areas. The organisation relies on the goodwill and volunteer work of university and school staff but the strong interest amongst students and teachers shows that OzCLO is responding to a demand for linguistic challenges. [ABSTRACT FROM AUTHOR]

Aim We investigated whether faunas of lentic macroinvertebrates differed among two landscape types: (1) those that are largely covered in forests (presumed to be in a more pre-human-impact condition) and (2) those that are completely cleared for agricultural exploitation (massively altered). Location Five pairs of landscapes (each pair referred to as a region) – one of each landscape type – across a 30,000 km2 region of north-central Victoria, Australia. Methods Each individual waterbody was surveyed three times (austral spring 2006, autumn 2007, and spring 2007) for invertebrates. Waterbodies were characterized by measurements of static (e.g. abutting vegetation cover) and labile (e.g. pH) variables. Data were analysed using hierarchical Bayesian models of species richness, α- and β-diversities and functional feeding groups. Assemblage composition was related to landscape and in-waterbody characteristics. Results Neither measured, nor asymptotic estimates of, species richness differed among landscape types, notwithstanding consistent differences in in-waterbody habitat characteristics among waterbodies in the two landscape types. There were no discernible differences in patterns of α- and β-diversities at landscape scales relating to landscape type. Habitat diversity of waterbodies at the landscape scale did not affect β-diversity, although distinct waterbodies within landscapes tended to have more distinct faunas. Main conclusions The lentic macroinvertebrate faunas are relatively homogeneous over the entire region, with little differentiation between wooded and cleared landscapes. The regional fauna may be a homogenized subset of native species, possibly arising from the huge numerical predominance of lentic habitats in agricultural landscapes producing ‘spill-over’ effects into forested landscapes. Of taxa more frequently found in one or other landscape type, trophic group diversity was greater in forested landscapes. [ABSTRACT FROM AUTHOR]

Aim We explored whether the anuran amphibian faunas differed among landscapes that are relatively intact (largely covered in forests and woodlands) and others that are completely converted to agriculture. We also used historical data sets to assess the current condition of the anuran fauna in a region predicted to experience, and experiencing, severe drying and warming. Location Five pairs of landscapes (each of c. 20 km2) – one in each pair being almost completely wooded and the other cleared for agriculture – across a 30,000 km2 region of northern Victoria, Australia. Methods Sites were repeatedly surveyed in the austral winter–spring breeding seasons of 2006 and 2007, with records collected of numbers of calling males and the presence of egg masses and tadpoles. We characterized the sites using static (e.g. dimensions, surrounding physiognomic characteristics such as tree cover) and labile (e.g. pH, dissolved oxygen) variables. Data were analysed using hierarchical Bayesian models. Results For calling males, landscape type did not affect densities or species richness measures. The availability of a grassy verge around water bodies was an important predictor for most species, but other labile and static variables seemed not to be important. Fewer than half of the species historically known from the region were recorded. There were no important predictors of occurrence of egg masses or tadpoles. Reproduction effectively may have failed over the period, with fewer than one in four sites showing evidence of egg masses or tadpoles. Main conclusions The proportion of sites at which some well-studied species (e.g. Crinia signifera, Limnodynastes dumerilii) were recorded has dropped substantially since the 1970s, as have average densities of calling males of Crinia spp. The remnant anuran fauna appears to be dominated by resilient and hardy species with low current diversity. The on-going (12+ years) drought in these landscapes suggests a bleak long-term prognosis for the few remaining species of anuran amphibians. [ABSTRACT FROM AUTHOR]

Ecological factors are important drivers of phenotypic divergence, which may lead to incipient speciation. A variety of habitats should be preserved to maintain evolutionary potential. We used the marsupial, the yellow-footed antechinus ( Antechinus flavipes) as a model species for investigating phenotypic differentiation between animals inhabiting two habitat types in south-eastern Australia: flood-plain river red gum and box–ironbark forests. All tested phenotypic characteristics varied between years at the same sites and therefore were not useful for investigating morphological specialization that may lead to speciation. Males generally were significantly heavier when antechinus densities were lower, but exceptions were found, possibly related to food availability. Teat-number variation recently has been shown to be associated with habitat specialization and incipient speciation within Antechinus agilis. We investigated genetic differentiation associated with this trait in A. flavipes. Population genetic analyses of microsatellite genotypes and mitochondrial DNA haplotypes revealed that sympatric 12-, 13- and 14-teat females in Chiltern forest were part of one freely interbreeding population. Our parentage analyses found two cases where 13-teat mothers produced 12-teat daughters. This suggests either plasticity or paternal genetic influence on the offspring's teat-number phenotype. Laboratory matings may be required to resolve the extent to which teat number is heritable in A. flavipes. © 2008 The Linnean Society of London, Biological Journal of the Linnean Society, 2008, 94, 303–314. [ABSTRACT FROM AUTHOR]

Forest clearance results in a marked change in the dispersion of resources such as food and shelter: from a relatively continuous distribution, to patches and strips of remnant habitat set in a more or less inhospitable matrix. Such changes in the patterns of resource dispersion have the potential to strongly influence the dynamics of social and mating systems of resident animal populations. We studied the den-use patterns, home range characteristics and mating system of a population of bobucks, Trichosurus cunninghami (Marsupialia: Phalangeridae), permanently resident in linear roadside strips of vegetation in north-eastern Victoria, Australia in order to gain a greater understanding of the impacts of occupying linear roadside habitats on the behavioural ecology of arboreal marsupials. We radio-tracked 11 adult females and six adult males and collected 2126 diurnal fixes (mean 125/individual) and 1044 nocturnal fixes (mean 61/individual). Males used significantly more den-trees (mean 16.5 ± 1.5 den-trees/individual) than females (mean 7.4 ± 0.6 den-trees/individual) and had home ranges more than twice the size of those of females (male mean 5.1 ± 0.8 ha, female mean 2.1 ± 0.3 ha). On average, each male's home range overlapped with those of three females; there was little intrasexual home range overlap in either sex. Genetic parentage analysis of all young sampled during the study ( n = 22) established that only males that overlapped in home range with females had sired those females' young. All but one male in the study sired multiple young in each of the years they were recorded breeding. These behavioural and genetic data indicate that the roadside population was polygynous, in contrast to the socially monogamous bobuck population we studied in a neighbouring forest patch. These differences in behaviour may reflect patterns of resource distribution in the two habitats. [ABSTRACT FROM AUTHOR]

Human activities such as regulating river flows, logging and removing fallen timber adversely affect floodplain ecosystems around the world. Studies of the dynamics of floodplain-dwelling populations will help to understand the effects of altered flood regimes and to manage and restore floodplains. The yellow-footed antechinus ( Antechinus flavipes) is the only small, native, carnivorous mammal (Marsupialia) on many degraded floodplains in south-eastern Australia, where its abundance appears to increase with proximity to floods, which is partly due to enhanced survival (as inferred from increased abundance of second-year females). We analysed population genetic patterns and maternity among samples collected following the period of postnatal dispersal, in the years preceding and following planned floods, at different distances from flood locations along the Murray River. Our genic and genotypic analyses of mitochondrial DNA (mtDNA) control region haplotypes and 11 microsatellite loci demonstrated high immigration rates into sites in close proximity to floods. All sampled males emigrated from their natal sites to points of capture, while some females were philopatric. There were high rates of dispersal of males among all sites within a partially flooded forest, while females dispersed more to locations closest to inundations rather than to distant places. These results suggest that environmental flows are beneficial to antechinus both by enhancing adult survival and promoting dispersal of females. [ABSTRACT FROM AUTHOR]

Populations of feral house mice ( Mus domesticus L.) in Australia undergo multiannual fluctuations in density, and these outbreaks may be partly driven by some change in behavioural self-regulation. In other vertebrate populations with multiannual fluctuations, changes in kin structure have been proposed as a causal mechanism for changes in spacing behaviour, which consequently result in density fluctuations. We tested the predictions of two alternative conceptual models based on kin selection in a population of house mice during such an outbreak. Both published models ( ; ) propose that the level of relatedness between interacting individuals affects their behavioural response and that this changes with population density, though the nature of this relationship differs between the two models. Neither of the models was consistent with all observed changes in relatedness between interacting female mice; however, our results suggested that changes in kin structure still have potential for explaining why mouse outbreaks begin. Therefore, we have developed a variant of one of these conceptual models suggesting that the maintenance of female kin groups through the preceding winter significantly improves recruitment during the subsequent breeding season, and is therefore necessary for mouse outbreaks. We provide six testable predictions to falsify this hypothesis. [ABSTRACT FROM AUTHOR]

This paper reports on an aspect of a small, empirical study that explored how cross-category friendships were constructed among an ethnically diverse cohort of Year 10 students in an Australian school. The students, who self-identified as having friendships across gender and ethnic boundaries, were interviewed in focus groups. Young men and young women, in speaking of their cross-cultural friendships, generally stressed commonalities among rather than differences between groups of friends. Nevertheless, students identified two predominant peer groups and used the terms 'aussie' and 'wog' to name them. Some of the male students appeared to be more keen than many of the females to mark themselves out as belonging to one or the other of these groups. This paper will discuss how these terms are utilised among these students to construct particular identities. On one level, this naming signified differences of choice, with reference to styles of music, clothing, jewellery, hair and entertainment. Is this an attempt to reclaim and rework previously racist descriptors into more egalitarian terms by young people? The meanings and sense that students make of such traditionally racist terms and how their use reflects and challenges wider cultural discourses of difference are discussed. How 'sameness' is constituted around shared experiences rather than common cultural backgrounds is also considered. [ABSTRACT FROM AUTHOR]

• Short-term educational sojourning is an unreported language management strategy. • Taiwanese-background mothers engage in it as part of their family language policy. • Parents aim to enhance children's home language proficiency and Taiwanese identity. • Young children's sense of identity may divert from parental expectations though. This study investigates the transnational experiences of young Taiwanese-background children living in Australia, who sojourn to their parents' homeland during the school holidays to improve their linguistic and cultural skills, as reported by their mothers. Although this appears to be a frequent practice in the Taiwanese diaspora, showcasing the agency of this community, little research has systematically investigated this practice, and in particular its impact on the children and their families. Data for this study were obtained through online questionnaires and semi-structured interviews with mothers who engage in this practice, to gather information on family histories and participants' backgrounds, family language policies, and parents' perceptions of children's experiences and challenges. The data show that parents aim to enhance their children's proficiency levels in the home language as well as their Taiwanese identity. Children, however, take an agentive role with regard to identity choices, so parents' aims are not always fulfilled. Sojourning is presented as a clear example not only of enacted family language policy, but also as an explicit management practice, positioning the Taiwanese diaspora within both their new as well as their old homeland. [ABSTRACT FROM AUTHOR]

In Australia, aquatic macroinvertebrates have faced massive changes to their habitats because of human actions. Here, we have developed nuclear, polymorphic markers for the waterboatmen Micronecta gracilis (Hemiptera), a backswimmer Anisops hackeri (Hemiptera), and a diving beetle Necterosoma wollastoni (Coleoptera). These markers will allow us to study gene flow and genetic diversity in these species in massively altered forested and agricultural landscapes. [ABSTRACT FROM AUTHOR]

Abstract: Regulation of river flows has altered floodplain ecosystems around the world. Floods are less frequent, which leads to reduction of favourable environmental conditions for many terrestrial and aquatic organisms adapted to natural flooding regimes. In Australia, the Murray River floodplains have been subjected to decline in inundations, to extensive logging and to removal of fallen timber. The yellow-footed antechinus (Antechinus flavipes) is the only small, native, ground-dwelling/semi-arboreal mammal on most floodplains of south-eastern Australia, yet the effects of floods on its population dynamics largely are unknown. Here, we found positive effects of proximity to flooding, higher woodloads and of abundance of large, hollow-bearing trees on antechinus numbers. Mean trapping rates of antechinuses were lowest in 2003 following a 3-year period with no inundation, higher in 2004 following the first breeding season during a small, controlled flood in 2003, and higher again in 2005, following a small, controlled flood in 2004. In 2004 and 2005, trapping rates declined with distance from floodwaters. This study provides evidence for the benefits of using management flows to inundate floodplains, conserving large trees and ensuring high woodloads in floodplains for sustaining populations of the yellow-footed antechinus. [Copyright &y& Elsevier]

Introduction: The COVID-19 pandemic has significantly impacted the clinical presentations of burns and the provision of services. This study aims to describe and analyse patterns and trends in adult burns across New South Wales (NSW) and the Australian Capital Territory., Methods: A NSW statewide retrospective review was conducted from 2017 to 2022 for adult patients with burns. A comparative analysis was performed for the COVID-19 group (2020-2022) and control group between 2017 and 2019., Results: We found a total of 11,433 patients (7102 non-COVID vs 4331 COVID-19). The average age in the COVID-19 group was 1.4 years older than counterparts (40.6 vs 42.0, p < 0.001). The 18 - 25 and 36 - 45 age groups experienced significantly lower proportions of presentations, whereas, the 76-85 years experienced significantly higher proportions. There was a significantly higher proportion of pressure injuries (0.1% vs 0.4%, p < 0.001) and contact burns (17.2% vs 18.7%), but lower explosions (1.3% vs 0.2%) for the COVID-19 group compared to their counterparts. The mean TBSA% was 0.4% greater in the COVID-19 group compared to their counterparts (2.4 vs 2.8, p < 0.001). There were significantly more operating sessions (0.2 vs 0.3, p < 0.001). The mean length of stay was significantly greater by 0.8 days for the COVID-19 group compared to their counterparts (1.5 vs 2.3, p < 0.001)., Conclusions: Epidemiological changes were not greatly different to previous years from the impact of COVID-19. The shift in elderly presentations and operative interventions reflects the holistic care of burns units working in a new landscape with an invigorated focus on telehealth and outpatient care., Competing Interests: Declaration of Competing Interest No authors have any competing interests. This project has been approved by the Human Research Ethics Committee with no restrictions. There is no source of financial or other support and no financial or professional relationships which may pose a competing interest. Patient consent has been obtained. The data is deemed confidential and under ethics cannot be disseminated openly due to confidentiality and privacy. Photo consent has been obtained for patients., (Crown Copyright © 2023. Published by Elsevier Ltd. All rights reserved.)

Background and Aims: Despite the critical role of woody tissues in determining net carbon exchange of terrestrial ecosystems, relatively little is known regarding the drivers of sapwood and bark respiration., Methods: Using one of the most comprehensive wood respiration datasets to date (82 species from Australian rainforest, savanna and temperate forest), we quantified relationships between tissue respiration rates (Rd) measured in vitro (i.e. 'respiration potential') and physical properties of bark and sapwood, and nitrogen concentration (Nmass) of leaves, sapwood and bark., Key Results: Across all sites, tissue density and thickness explained similar, and in some cases more, variation in bark and sapwood Rd than did Nmass. Higher density bark and sapwood tissues had lower Rd for a given Nmass than lower density tissues. Rd-Nmass slopes were less steep in thicker compared with thinner-barked species and less steep in sapwood than in bark. Including the interactive effects of Nmass, density and thickness significantly increased the explanatory power for bark and sapwood respiration in branches. Among these models, Nmass contributed more to explanatory power in trunks than in branches, and in sapwood than in bark. Our findings were largely consistent across sites, which varied in their climate, soils and dominant vegetation type, suggesting generality in the observed trait relationships. Compared with a global compilation of leaf, stem and root data, Australian species showed generally lower Rd and Nmass, and less steep Rd-Nmass relationships., Conclusions: To the best of our knowledge, this is the first study to report control of respiration-nitrogen relationships by physical properties of tissues, and one of few to report respiration-nitrogen relationships in bark and sapwood. Together, our findings indicate a potential path towards improving current estimates of autotrophic respiration by integrating variation across distinct plant tissues., (© The Author(s) 2022. Published by Oxford University Press on behalf of the Annals of Botany Company. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)

Background: MRSA is an on-going problem for burn patients., Aim: To analyze risk factors for, and the effect of MRSA colonization on burn patients' outcome., Methods: During 21 months burn patients' details and MRSA isolates were analyzed, and a case-control study performed., Results: Of 357 burn patients, 57 (16%) tested positive for MRSA. Compared to the MRSA negative group, MRSA positive patients had a higher median total burn surface area (15%[IQR 5-17%] vs. 5%[IQR 2-8%]; p<0.001), more admissions to ICU (54% vs. 26%; p<0.001), longer ICU length of stay (4.3 vs. 1.0 days; p<0.001), required more operations (1.6 vs. 0.8; p<0.001), and had longer total hospital length of stay (25.5 vs. 8.0 days; p<0.001). MRSA positivity was a significant independent predictor of increased length of stay (6.0 days, 95%CI 2.39-9.6 days; p=0.001) in a multivariable regression model correcting for patients TBSA and co-morbidities. Cardiac comorbidities (OR 5.14, 95%CI 1.76-15.62; p<0.001) and a longer exposure to the hospital environment (OR 1.05, 95%CI 1.02-1.09, p=0.005) increased the likelihood for MRSA positivity., Conclusion: The negative impact of MRSA positivity on burn patients outcome indicates the need for improved screening procedures for early identification and further efforts toward MRSA infection control to prevent cross-infection as this may significantly impair patients' outcome., (Copyright © 2015 Elsevier Ltd and ISBI. All rights reserved.)

Background: The purpose of this study was to compare burn size estimation between referring centres and Burn Units in adult patients transferred to Burn Units in Sydney, Australia., Methods: A review of all adults transferred to Burn Units in Sydney, Australia between January 2009 and August 2013 was performed. The TBSA estimated by the referring institution was compared with the TBSA measured at the Burns Unit., Results: There were 698 adults transferred to a Burns Unit. Equivalent TBSA estimation between the referring hospital and Burns Unit occurred in 30% of patients. Overestimation occurred at a ratio exceeding 3:1 with respect to underestimation, with the difference between the referring institutions and Burns Unit estimation being statistically significant (P<0.001). Significant overestimation occurs in the early transfer of burn-injured patients as well as in patients transferred more than 48h after the burn (P<0.005). Underestimation occurs with less frequency but rises with increasing time after the burn (P<0.005) and with increasing TBSA. Throughout the temporal spectrum of transferred patients, severe burns (≥20% TBSA) were found to have more satisfactory burn size estimations compared with less severe injuries (<20% TBSA; P<0.005)., Conclusions: There are significant inaccuracies in burn size assessment by referring centres. The systemic tendency for overestimation occurs throughout the entire TBSA spectrum, and persists with increasing time after the burn. Underestimation occurs less frequently but rises with increasing time after the burn and with increasing TBSA. Severe burns (≥20% TBSA) are more accurately estimated by the referring hospital. The inaccuracies in burn size assessment have the potential to result in suboptimal treatment and inappropriate referral to specialised Burn Units., (Copyright © 2014 Elsevier Ltd and ISBI. All rights reserved.)

Demographic and genetic replenishment of populations through the exchange of individuals is essential for their persistence. Habitat loss and fragmentation can reduce the permeability of landscapes, hinder dispersal and compromise the genetic integrity of populations over time. We examined ecological connectivity in an arboreal marsupial, the common ringtail possum (Pseudocheirus peregrinus) in fragmented forests of southeastern Australia. This species is potentially robust to fragmentation based on its presence in degraded landscapes and known use of plantations for foraging and nesting. Using 312 individuals screened at 15 microsatellites, we measured dispersal and gene flow across seven native Eucalyptus forest remnants surrounded by exotic Pinus radiata plantations and three sites within a large continuous forest. The permeability of the pine matrix to dispersing possums was significantly lower than that of the native forest. Small, isolated patches exhibited signatures of genetic drift, having lower heterozygosity and allelic richness than possums in large patches. Most (87%) possums were born in their sampled patch or dispersed only short distances into neighbouring remnants. The continuous forest was identified as an important source of immigrants only for proximate patches (within 2.5 km), thus emphasizing for the common ringtail possum and more specialized arboreal mammals the need to conserve large, proximate forest remnants. Our findings highlight the importance of using genetic tools to understand the long-term biological consequences of fragmentation for effective management., (© 2011 Blackwell Publishing Ltd.)

Forests and woodlands are under continuing pressure from urban and agricultural development. Tree-dependent mammals that rarely venture to the ground are likely to be highly sensitive to forest fragmentation. The Australian squirrel glider (Petaurus norfolcensis) provides an excellent case study to examine genetic (functional) connectivity among populations. It has an extensive range that occurs in a wide band along the east coast. However, its forest and woodland habitat has become greatly reduced in area and is severely fragmented within the southern inland part of the species' range, where it is recognised as threatened. Within central and northern coastal regions, habitat is much more intact and we thus hypothesise that genetic connectivity will be greater in this region than in the south. To test this we employed microsatellite analysis in a molecular population biology approach. Most sampling locations in the highly modified south showed signatures of genetic isolation. In contrast, a high level of genetic connectivity was inferred among most sampled populations in the more intact habitat of the coastal region, with samples collected 1400 km apart having similar genetic cluster membership. Nonetheless, some coastal populations associated with urbanisation and agriculture are genetically isolated, suggesting the historic pattern observed in the south is emerging on the coast. Our study demonstrates that massive landscape changes following European settlement have had substantial impacts on levels of connectivity among squirrel glider populations, as predicted on the basis of the species' ecology. This suggests that landscape planning and management in the south should be focused on restoring habitat connectivity where feasible, while along the coast, existing habitat connectivity must be maintained and recent losses restored. Molecular population biology approaches provide a ready means for identifying fragmentation effects on a species at multiple scales. Such studies are required to examine the generality of our findings for other tree-dependent species.

Several factors contribute to the extinction of populations in fragmented habitat but key ones include habitat loss and disruptions to connectivity. Aspects of the ecology of greater gliders (Petauroides volans), along with observations of their response to native forest clearance at a site in southeastern Australia, lead to the prediction in the 1960s that the species would not persist in the replacement exotic pine plantation. However, 35 years later, the species was observed in many remnant native vegetation patches retained within the plantation boundary, albeit at a lower occupancy rate than at matched continuous forest control sites. To determine the role of patch connectivity in persistence of P. volans in remnants, we employed 12 microsatellite markers to genotype individuals from 11 remnants, three contemporary nearby continuous native eucalypt forest sites and a sample collected during native vegetation clearance at the site in the 1960s. Patch samples retained substantially more genetic diversity than expected under an isolation model, suggesting that patches have experienced some immigration. Five putative patch immigrants--two from sampled sites 1- and 7-km distant, and three from unresolved or unsampled localities--were identified via genetic parentage and population assignment analyses. Patch populations displayed varying levels of admixture in Bayesian genetic structure analyses, with the oldest and most geographically isolated ones showing the least admixture, suggesting they have experienced relatively little immigration. Evidence of at least some immigration into patches may explain why P. volans has persisted contrary to expectation in heavily fragmented habitat.

In September and October 2000, the remains of a number of apparently predated northern hairy-nosed wombats (Lasiorhinus krefftii) were discovered in Epping Forest National Park, the site of the only known population of this highly endangered species. Analysis of DNA recovered from six carcasses and a section of intestine found nearby was carried out using microsatellite and Y-specific primers. This identified seven individual wombats, the identity of three of which was inferred from a genotype database prepared from animals sampled during trapping programmes. Six victims were male and one female, suggesting that female-biased predation rates are unlikely to be the cause of the current male-biased population sex ratio. DNA isolated from four canid faeces found in the vicinity revealed three distinct canid microsatellite genotypes with very high probabilities of belonging to dingoes (Canis familiaris dingo). A wombat genotype matching that of one of the dead individuals was identified from scats of two of the dingoes. In addition, two macropod microsatellites were amplified from two dingo scats. These observations provided vital information regarding predation on northern hairy-nosed wombats, and prompted the permanent exclusion of dingoes from the park by the erection of a dingo-proof fence.