Pathways for algal recolonization in seasonally-flowing streams

1. In semi-arid climates, seasonally-flowing streams provide most of the water required for human use, but knowledge of how water extraction affects ecological processes is limited. Predicted alterations in stream flows associated with the impacts of climate change further emphasize the need to understand these processes. Benthic algae are an important base for stream food webs, but we have little knowledge of how algae survive dry periods or respond to altered flow regimes.

2. We sampled 19 streams within the Grampians National Park, south-eastern Australia and included four components: a survey of different drought refuges (e.g. permanent pools, dry biofilm on stones and dry leaf packs) and associated algal taxa; a survey of algal regrowth on stones after flows recommenced to determine which refuges contributed to regrowth; reciprocal transplant experiments to determine the relative importance of algal drift and regrowth from dry biofilm in recolonization; direct measurement of algal drift to determine taxonomic composition in relation to benthic assemblage composition.

3. Algae showed little specificity for drought refuges but did depend on them; no species were found that were not present in at least one of the perennial pool, dry biofilm or leaf pack refuges. Perennial pools were most closely correlated with the composition of algal assemblages once flows resumed, but the loss or gain of perennial pools that might arise from stream regulation is unlikely to affect the composition of algal regrowth. However, regulated streams were associated with strong increases in algal density in dry biofilm, including increased densities of Cyanobacteria.

4. A model for algal recolonization in seasonally-flowing streams identified three pathways for algal recolonization (drift-dependent, dry biofilm-dependent and contributions from both), depending on whether streams are diatom-dominated or dominated by filamentous algae. The model predicted the effects of changes to stream flow regimes on benthic algal recolonization and provides a basis for hypotheses testable in streams elsewhere.

Sport development, systems, policies and pathways : an introduction to the special issue

Fundamentally sport development is about participation and promoting the opportunities and benefits of participation. Participation in sport and physical activity spans a wide range of contexts including the wholesomeness associated with the freedom of children’s play to the modification of sport to allow children to be children a little longer. The cycle of participation continues to junior and youth sport, where the rules, regulations and traditions of a sport become the foundation to protecting the “institution” of sport, to participation in senior competitions and ultimately, to elite and professional sport. Sport development research and practice therefore is concerned with all these manifestations of the sport experience. It logically follows that the purview of sport development is quite large and potentially complex. Moreover, it is possible to identify at least five themes that could be used to categorise sport development research. These themes include; policy, development through sport, development of sport, future patterns of sport delivery and marketing in terms of the relationship between professional sport and participation.

Elucidation of defence responses and signalling pathways induced in Arabidopsis thaliana following challenge with Phytophthora cinnamomi

Arabidopsis thaliana (Arabidopsis) Col-0 was inoculated with Phytophthora cinnamomi to assess the interaction and defence responses involved. Pathogen ingress and asexual reproduction occurred on root tissue but not leaf tissue. The colonisation of root tissue did not cause disease symptoms or plant death, indicating that Arabidopsis Col-0 was tolerant of the infection. The induction of several plant defence responses including the expression of defence-related genes were found, with differences displayed between inoculated root and leaf tissue. Arabidopsis defence-related gene mutant/over-expressing lines were also inoculated with P. cinnamomi but none of the lines tested exhibited a marked increase in susceptibility to the pathogen.

Pathways from rural schools : does school VET make a difference?

This paper reports results from an NREC funded study of the medium term outcomes for youth and their communities of VET programs delivered by rural schools. The key findings relate to the outcomes of school VET programs in terms of education and training, employment, and community outcomes such as rural youth retention, and to the features that contribute to successful outcomes. Rural school VET students are less likely to continue with post school education and training in general, but more likely to go onto further vocational education and training than school non-VET students. The study reports strong links between industry area of school VET course, and further education and training, or employment, in the same industry area. It also indicates that school VET students are more likely to live in a rural area at some time during their working life. The features of rural school VET programs that influence outcomes include the purpose of the school VET program and work placements. Student motivation and gender also influence outcomes for individual students. Rural school VET courses represent pathways to related education and training for students who intend to live in a rural area during their working life, and for those who do not.

Pathways from rural schools : does VET make a difference?

This paper reports findings from a survey of former students from six Australian rural school clusters. It compares the experiences and outcomes of students who had participated in a school vocational education and training (VET) program with those who had not. School VET courses intended to provide a pathway to local employment appear to be successful in retaining students who otherwise may have left school before completing Year 12, and in assisting their transition from school to work. For all school VET students, the work placement component of the program aids the transition to local jobs and apprenticeships, and increases youth retention in the community. As the findings indicate that school VET students are predisposed to live in a rural area at some time during their working life, the paper concludes that VET programs in rural areas have special potential to develop skills and pathways for the future workforce of rural Australia.

Positive pathways for couples and families : meeting existing and emerging challenges of relationships

There is a growing need to develop an understanding of the positive pathways that strengthen the relationships of Australian couples and families. The couples and families in contemporary society are faced with many challenges and pressures that can mitigate against maintaining satisfying and enduring couple and family relationships. For example, increasing need for dual income families, longer working hours and demographic shifts that see older people living longer and children staying at home longer mean that couples are often required to provide familial care across two generations – frail ageing parents and children. These highlight just some of the pressures faced which can lead to couples not taking the time to cultivate their relationships. The aim of the workshop was to deal with many of these issues by linking research, policy and practice in ways that would help families meet such challenges. The two-day workshop, held 1-2 November 2008 in Melbourne, brought together leading and emerging Australian and international relationship researchers with practitioners, educators, policy makers and service-delivery organisations. Alongside the Academy, the event was sponsored by Deakin University, the University of Queensland, the Department of Families, Housing and Community Services and Indigenous Affairs (FaCHSIA), the Attorney General's Department (AG Department), the Australian Institute of Family Studies (AIFS) and Lifeworks. The workshop comprised seven sessions and two break-out discussions. A total of 28 participants attended the workshop. Of these participants, there were 19 speakers and 7 delegates from the various sponsor organisations that took part in group discussions.

Workshop synopses : Pathways for public health education

The Commonwealth introduced the Public Health Education and Research Program (PHERP) initiative to support capacity building within the public health workforce, primarily through investment in Master of Public Health programs. Following the 2005 review of PHERP, a national 'Quality Agenda' was proposed to establish minimum standards in public health competencies of graduates; and Master of Public Health (MPH) graduates in particular. This 'agenda' has triggered renewed discussion on public health workforce needs, public health graduate competencies, and the capacity of the tertiary education sector to deliver these.

The Australian Network of Academic Public Health Institutions (ANAPHI) has worked with the Department of Health and Ageing on the 'Quality Agenda'. In 2008, ANAPHI convened a working group to further open up discussion among academic institutions on the public health education context to the Quality Agenda. The group held a lunchtime workshop at the 2008 Population Health Congress in Brisbane, as one of a themed pair of sessions entitled 'Public Health Professionals - Shaping our Future'. A further aim of the workshop was to identify key themes to shape the next ANAPHI Teaching and Learning Forum (September 23rd to 24th 2008, Canberra, www.anaphi.org.au).