The influence of time since fire and distance from fire boundary on the distribution and abundance of arboreal marsupials in Eucalyptus regnans-dominated forest in the Central Highlands of Victoria

The impact of time since fire after two consecutive wildfires 44 years apart (1939 and 1983) within the same area, and the distance from the fire boundary «100 m or 500-2000 m), were investigated in relation to the distribution and abundance of arboreal marsupials in 1994. Arboreal marsupials were censused by stagwatching and spotlighting in two relatively young age classes of mountain ash (Eucalyptus regnans) dominated forest in the Central Highlands of Victoria. Five species of arboreal marsupial were detected, but only three were detected in sufficient numbers to determine habitat preferences. Petauroides volans (greater glider) was statistically more abundant in 1939 regrowth forests, while Trichosurus caninus (mountain brushtail possum) showed no significant preference for either age class of forest. All but one record of Gymnobelideus leadbeateri (Leadbeater's possum) came from young forest, though the effect of age-class was not statistically significant. Distance from fire boundary explained little or no variation in mammal distribution or abundance. While the actual number of hollow-bearing trees was similar in both age classes of forest, the long-term lifespan of hollow-bearing trees in more recently burnt forest is predicted to be lower than in unburnt or not recently burnt forest. Post-fire salvage logging following the 1983 wildfires appears to have reduced the number of hollow-bearing trees at sites burnt in 1983.

Salvage material logistics management for building demolition project

Building demolition imposes substantial environmental impacts. In particular, large amount of demolition wastes are disposed to landfills. A solution to ease the situation is to maximally reuse and recycle waste building material. Management philosophies such as Just-in-time are applied into demolition project management in order to promote reuse and recycling of demolition wastes. Transportation logistics, widely applied in the manufacturing industry, is ideal to be adopted into demolition projects to optimise waste material production, inventorying, and transportation. In particular, it enables right types and amounts of dismantled building materials to be transferred to right location, and at right time, as required by material demanders. Consequently, waste reuse and recycling can be facilitated. Furthermore, logistics management helps the demolition project team to reduce cost, shorten project duration, and satisfy material demanders. Transportation planning concerns thorough preparation technically and managerially on the demolition site for transportation activities. Information exchange is playing a significant role in delivering and sharing information among project participants, including building owner, demolition project team, potential material demanders, and transporters. This research paper aims to identify the role of transportation logistics in a building demolition project and to analyse inventory control, transportation, and various technical aspects of logistic management for demolition wastes.

Development in Papua New Guinea : various meanings in the context of logging in West New Britain

Development in Papua New Guinea ... is research into village level issues of logging. In New Britain, nationals are offered royalties for cutting their rainforest. Information about ecology and biodiversity is usually late in coming, and such information to them does not appear to advance their development. This thesis offers the most specific method for dealing with small communities in Papua New Guinea, and confronts the issue of self development. It is posited that all other development must encourage self development in Papua New Guinea. Evidence brought here shows the need to make the Melanesian community central to development strategies.

To accomplish such a strategy, there is a need to consider Melanesian cultures. An explanation of world views ensues. The world views of people of the Pasismanua region, of New Britain's south coast, was compared broadly with Melanesian cultures and Melanesian development in a variety of circumstances. Consequently, the suggestions made are broadly applicable to situations where resources must be well monitored. There are many such situations in Pacific nations, which suggests that the thesis will be of usc to a wide research community.

Since research is grounded in ethnographic as well as other research, this kind of study generates many other research questions, and the research is designed to lead to other studies. Certain aspects of the design become disclosed when the research has progressed. As well, the background of an expatriate researcher is intrusive, and must be mitigated by some form of participation in the host culture. This is a central tenet of the thesis. This participation increases sensitivity to culture and yields a circumspect consideration of the colonial issue. Occupied for many years by colonial powers especially Australia, all New Guinea including West New Britain shows the effects of colonisation. It also shows evidence of the new colonialism of cash-cropping, and of the destruction of biodiversity. This becomes a central theme, as does the position of this researcher as a participant in a global economic culture encroaching on and invited by Papua New Guinea.

Implementation salvage experiences from the Melbourne diabetes prevention study

Background Many public health interventions based on apparently sound evidence from randomised controlled trials encounter difficulties when being scaled up within health systems. Even under the best of circumstances, implementation is exceedingly difficult. In this paper we will describe the implementation salvage experiences from the Melbourne Diabetes Prevention Study, which is a randomised controlled trial of the effectiveness and cost-effectiveness nested in the state-wide Life! Taking Action on Diabetes program in Victoria, Australia.

Discussion The Melbourne Diabetes Prevention Study sits within an evolving larger scale implementation project, the Life! program. Changes that occurred during the roll-out of that program had a direct impact on the process of conducting this trial. The issues and methods of recovery the study team encountered were conceptualised using an implementation salvage strategies framework. The specific issues the study team came across included continuity of the state funding for Life! program and structural changes to the Life! program which consisted of adjustments to eligibility criteria, referral processes, structure and content, as well as alternative program delivery for different population groups. Staff turnover, recruitment problems, setting and venue concerns, availability of potential participants and participant characteristics were also identified as evaluation roadblocks. Each issue and corresponding salvage strategy is presented.

Summary The experiences of conducting such a novel trial as the preliminary Melbourne Diabetes Prevention Study have been invaluable. The lessons learnt and knowledge gained will inform the future execution of this trial in the coming years. We anticipate that these results will also be beneficial to other researchers conducting similar trials in the public health field. We recommend that researchers openly share their experiences, barriers and challenges when conducting randomised controlled trials and implementation research. We encourage them to describe the factors that may have inhibited or enhanced the desired outcomes so that the academic community can learn and expand the research foundation of implementation salvage.

Do leatherback turtles Dermochelys coriacea forage during the breeding season? A combination of data-logging devices provide new insights

Animals which undertake migrations from foraging grounds to suitable breeding areas must adopt strategies in these new conditions in order to minimise the rate at which body condition deteriorates (which will occur due to oogenesis or provisioning for young). For some animals this involves continuing foraging, whereas for others the optimal strategy is to fast during the breeding season. The leatherback turtle undertakes long-distance migrations from temperate zones to tropical breeding areas, and in some of these areas it has been shown to exhibit diving behaviour indicative of foraging. We used conventional time–depth recorders and a single novel mouth-opening sensor to investigate the foraging behaviour of leatherback turtles in the southern Caribbean. Diving behaviour suggested attempted foraging on vertically migrating prey with significantly more diving to a more consistent depth occurring during the night. No obvious prey manipulation was detected by the mouth sensor, but rhythmic mouth opening did occur during specific phases of dives, suggesting that the turtle was relying on gustatory cues to sense its immediate environment. Patterns of diving in conjunction with these mouth-opening activities imply that leatherbacks are attempting to forage during the breeding season and that gustatory cues are important to leatherbacks.

Small reptile community responses to rotational logging

Timber harvesting is a common global disturbance that has important effects on the ability of forests to provide ecosystems services and retain biodiversity. Using predictive frameworks to examine biodiversity responses to logging could assist in retaining natural forest values. The intermediate disturbance hypothesis (IDH) and the habitat accommodation model (HAM) potentially offer frameworks for explaining different coarse scale community responses to logging. We used a 60. year post-logging chronosequence to investigate small reptile community responses to age post-logging in temperate forests using three metrics (species richness, evenness and relative abundance). First, we evaluated if variation in these metrics adhered to prior predictions, including the IDH. Second, we evaluated how age post-logging influence community responses through fine scale vegetation elements. Third, we evaluated support for the HAM by measuring compositional change (species turnover) of small reptile community to age post-logging. Reptile relative abundance exhibited a curvilinear relationship to age since logging, contradicting our prior prediction of sustained increase. Species richness and evenness were unrelated to age since logging thus providing no support to IDH and other prior predictions. Relative abundance and richness did not relate to any vegetation characteristic tested. These metrics were also unrelated to logging method. Community composition was marginally significantly influenced by age since logging, thus supporting the HAM. Our results suggest that forest reptiles exposed to logging exhibit variable changes depending on the community metric in question, and that different approaches, including those based on species traits, are needed to improve evaluating disturbance related biodiversity responses.

The impact of grazing by eastern grey kangaroos (macropus giganteus) on vegetation recovery after fire at Reef Hills regional park, Victoria

In southeastern Australia ecological burning is frequently used to maintain a number of plant and animal populations. However, many of these prescribed fires are small, and may focus intense grazing activity on new regrowth. At Reef Hills Regional Park, Victoria shrub species have senesced, presumably due to the absence of fire. Ecological burning may be necessary to promote regeneration, however, the population density of the Eastern Grey Kangaroo (Macropus giganteus) is high (approx 38 per km2), and grazing pressure presents a significant risk to postfire vegetation recovery. An assessment of grazing patterns and their effects on postfire recovery was carried out at Reef Hills Regional Park through grazing exclusion plots. Preferential grazing by Eastern Grey Kangaroos occurred on small burnt plots compared to adjacent unburnt areas as determined by faecal pellet counts. On burnt areas, there was a significant reduction in shrub diversity on grazed plots compared to ungrazed plots. Most observations of kangaroos were of animals grazing on farmland surrounding the Park, and it is likely that any burning might shift grazing from farmland to burnt areas when new growth occurs. This needs to be considered before any ecological burn plan is applied to manage vegetation communities, particularly if the plan requires small areas to be burnt. We recommended that a large area up to 200 ha area be burnt and monitored to determine whether burning larger areas disperses grazing pressure from macropods to a level where impacts on vegetation are reduced and localized plant extinctions do not occur.

The advantages of a proactive business response to human rights reporting

In a globalizing world, with shifting production, labor and consumer markets and increased competitiveness, human rights are gaining new practical relevance. The UN Global Compact presented by UN Secretary-General Kofi Annan to the World Economic Forum at Davos in 1999, sought to create a voluntary international corporate citizenship network to bring together private-sector and other social actors. Its central aim is to advance responsible corporate citizenship and universal social and environmental principles to meet the challenges of globalization. The business (and ethical) case for corporate engagement in human rights reporting is strengthening, although much still needs to be done. The Danish Human Rights and Business Project launched its 2006 educational project on company codes of conduct aimed at developing models for business in the pharmaceutical, steel, agricultural, logging, lumber, paper and cardboard, and apparel and textile industries, assessing company codes against international human rights standards.

Community development and environmentalism : the dilemmas of being a good ecological citizen

This paper explores some of the dilemmas in operating as both a good community development practitioner and a good ecological citizen. It begins with a brief casestudy of an experience of community development engagement with nongovernment organisations (NGOs) concerned about illegal logging in a South East Asian country. This is followed by a discussion of the different ways of understanding and evaluating the threats to the natural environment today and the various strategies that might be invoked. The paper then considers why operating as a 'good ecological citizen' can be a challenging task for community development practitioners and it discusses some ways forward.

Inhibition of inosine monophosphate dehydrogenase reduces adipogenesis and diet-induced obesity

We previously described a putative role for inosine monophosphate dehydrogenase (IMPDH), a rate-limiting enzyme in de novo guanine nucleotide biosynthesis, in lipid accumulation. Here we present data which demonstrate that IMPDH activity is required for differentiation of preadipocytes into mature, lipid-laden adipocytes and maintenance of adipose tissue mass. In 3T3-L1 preadipocytes inhibition of IMPDH with mycophenolic acid (MPA) reduced intracellular GTP levels by 60% (p < 0.05) and blocked adipogenesis (p < 0.05). Co-treatment with guanosine, a substrate in the salvage pathway of nucleotide biosynthesis, restored GTP levels and adipogenesis demonstrating the specificity of these effects. Treatment of diet-induced obese mice with mycophenolate mofetil (MMF), the prodrug of MPA, for 28 days did not affect food intake or lean body mass but reduced body fat content (by 36%, p = 0.002) and adipocyte size (p = 0.03) and number. These data suggest that inhibition of IMPDH may represent a novel strategy to reduce adipose tissue mass.

Soldier settlement after World War One in south western Victoria

This thesis addresses the physical aspects of farming on soldier settlement blocks in south west Victoria. The undeveloped land, high establishment costs, stock losses through animal diseases and lack of managerial skills all contributed to the settlers' inability to meet their financial commitments. These factors are analysed, as are the effects of declining rural commodities prices during the 1920s and 1930s. In addition, the relationship between the settlers and the successive administrative agencies is examined. The scheme was administered by the Closer Settlement Board from its inception until 1932 and much of the discussion during this period concerns the interaction between settler and inspector. Soldier settlement after World War One represented one of the last attempts to create a large body of 'yeoman' farmers. From the early 1920s there was an increasing dichotomy between the 'yeoman' and the 'managerial' ideologies. This dichotomy placed additional pressure on soldier settlers who were expected to be 'efficient' without adequate finances. In the post C.S.B. era, the focus shifts to the attempts by the Closer Settlement Commission to salvage the scheme and its greater understanding of the problems faced by the settlers. While this part of the thesis necessarily becomes more political, the physical and financial environment in which the soldier settlers worked was still an important factor in their success or failure. Unlike the C.S.B. which tended to blame soldier settlers for their situation, the Commission acknowledged that settlers' ability to succeed was often constrained by circumstances beyond their control. Under the latter administration, instalments were written off, additional land was allocated and finally the blocks were revalued to guarantee the men at least some equity in their farms. Those settlers who had survived until these changes were instituted received a 'successful outcome of their life's work'.

Estimating performance indexes of a baggage handling system using metamodels

In this study, we develop some deterministic metamodels to quickly and precisely predict the future of a technically complex system. The underlying system is essentially a stochastic, discrete event simulation model of a big baggage handling system. The highly detailed simulation model of this is used for conducting some experiments and logging data which are then used for training artificial neural network metamodels. Demonstrated results show that the developed metamodels are well able to predict different performance measures related to the travel time of bags within this system. In contrast to the simulation models which are computationally expensive and expertise extensive to be developed, run, and maintained, the artificial neural network metamodels could serve as real time decision aiding tools which are considerably fast, precise, simple to use, and reliable.

Using web-based mathematical interactive exercises and exploratory investigations : the possibilities and pitfalls

This case study looks at how a teacher used interactive exercises and exploratory investigations to reinforce concepts that have been learnt in a Year 8 Mathematics class. It highlights the practical problems faced by the teacher in terms of technical issues such as slow download times and logging on problems as well as class management issues. The findings are discussed in the light of the teacher’s mediation with the affordances of the Internet.