Powerline corridors: degraded ecosystems or wildlife havens?

Management of powerline corridors in Australia has traditionally focused on the complete removal of vegetation using short rotation times owing to the perceived hazard of fire associated with corridor vegetation. Because of the intense management associated with fire hazards, little thought has been given to use of powerline corridors by wildlife. This has resulted in corridors traditionally being viewed as a source of fragmentation and habitat loss within forested ecosystems. We investigated the responses of small mammal communities living in a powerline corridor to management-induced vegetation changes at different successional stages, to determine whether a compromise could be reached between managing corridors for fire and biodiversity. Habitat modelling in the corridor and adjacent forest for three native and one introduced small mammal species demonstrated that species responded to changes in vegetation structural complexity, rather than time-since-management per se. Early seral stages of vegetation recovery after corridor management encouraged the introduced house mouse (Mus domesticus) into corridors and contributed little to biodiversity. Mid-seral-stage vegetation, however, provided habitat for native species that were rare in adjacent forest habitats. As the structural complexity of the vegetation increased, the small mammal community became similar to that of the forest so that corridor vegetation contributed fewer biodiversity benefits while posing an unacceptable fire risk. If ecologically sensitive management regimes are implemented to encourage mid-seral vegetation and avoid complete vegetation removal, powerline corridors have the potential to improve biodiversity. This would maintain landscape connectivity and provide habitat for native species uncommon in the forest while still limiting fuel loads in the corridor.

Changes in vegetation sand floristics under a powerline easement and implications for vegetation management

Utility corridors such as powerlines are widespread linear easements of highly modified vegetation which often fragment natural areas of conservation significance. Vegetation management along these easements is aimed at modifying vegetation structure by the removal of all tall shrubs and trees, which may have adverse impacts on flora and fauna diversity. Victoria's Bunyip State Park is bisected by a high voltage powerline easement which is managed by a four year slashing cycle. Repeated slashing has altered plant species composition and structure of the drier slope and ridge vegetation compared to unslashed adjacent Open Forest vegetation, but Wet Heath within the management zone has remained largely unmodified. At a broad level, plant species diversity in the easement is increased, and higher vegetation density has created small mammal habitat. The powerline easement did not appear to facilitate weed invasion. Vegetation management by repeated slashing has altered the vegetation, but does not appear to have had adverse conservation impacts on local plant and small mammal diversity.

Towards ecological management of Australian powerline corridor vegetation

Powerline corridor management in Australia has traditionally focused on the complete removal of vegetation using short rotation times due to the perceived fire hazard associated with corridor vegetation. This study assessed vegetation recovery in a powerline corridor, following management, at three sites spanning corridor and forest habitat. Forest and corridor vegetation communities differed significantly between sites and over time. As vegetation recovered, the corridor community became a mix of plants common in the surrounding forest and open areas, changing within the 3-year study from a grass–fern to shrub–sedge community encroached by midstorey species. The current short rotations between management events unnecessarily maintain the corridor in a cycle of degradation, remove resources for native species and may allow introduced grasses and saplings to proliferate in the corridor. Maintaining a shrub layer would help avoid loss of species richness, encourage native species and limit colonisation opportunities of introduced species. Spot spraying emergent saplings and problem plants and mosaic slashing, would keep fire risk low and maintain biodiversity without increasing biomass to dangerous levels.

Recolonisation of powerline corridor vegetation by small mammals : timing and the influence of vegetation management

Powerline corridors through forested ecosystems have been criticised due their potential to fragment the landscape and facilitate the intrusion of undesirable species into natural areas. This study investigates the effects of vegetation management (slashing), on: (1) timing of small mammal recolonisation; (2) vegetation characteristics that drive small mammal responses; and (3) the point where corridor resources are sufficient to provide functional habitat for native species. Small mammal trapping was undertaken within Bunyip State Park, Australia, across three sites, once a month from January 2001 to May 2002 and every 2 months thereafter until January 2004. Changes in vegetation around each trap station were assessed annually in the forest and bi-annually in the corridor. Principal components analysis on the vegetation structural complexity values produced factors for use in species abundance models. Native small mammal species recolonised the corridor 1.5–3.5 years after management and the corridor supported a breeding population of small mammals around 2.5 years post-management. Males however, generally recolonised the corridor first, resulting in a sex-biased population in these areas. Species corridor habitat models for five native and one introduced species suggested cover and shelter were more important in determining corridor use than plant species per se. Powerline corridors have the potential to create a mixture of different successional stages, enhancing habitat availability for many species. However, the intensity of current management needs to be reduced and an integrated approach to management needs to be undertaken if powerline corridors are to continuously provide habitat for native small mammal species.

The effect of powerline corridor management on small mammal communities

This thesis investigated the ecological impacts of powerline corridor management on small mammals. The study found that powerline corridors provide habitat for native small mammal species, contrary to common belief that Australian powerline corridors are poor in native species. It is important however, that ecological sensitive management regimes are implemented.

Evolution of telecommunications and mobile communications in India: a synthesis in the transition from electronic to mobile business

This books tackles issues of e-business with a vision to the future on how to bridge these gaps and close down the barriers between the different corners of the world"--Provided by publisher.

Judicial responses to the protected confidential communications legislation in Australia

The article examines the background, aims and scope of recent legislation enacted in New South Wales, Victoria and South Australia to protect from disclosure in court of "confidential communications" generated in the context of counselling persons who allege that they were victims of sexual offences. In drafting the "confidential communications" legislation, the legislators undertook a difficult task of balancing the public interest in therapeutic confidentiality that would encourage victims of sexual assaults to report these offences and seek psychological and psychiatric care on the one hand, and the public interest in fairness of the trial, which may be prejudiced by exclusion of evidence pertinent to the forensic process on the other. In South Australia this task was fulfilled with greater success than in New South Wales and Victoria.

The case for selective ICT outsourcing : it`s easier for "green field" sites

This paper examines published research on Information and Communications Technology (ICT) Outsourcing and uses this as a framework through which to examine the delivery of ICT services at the South West Alliance of Rural Hospitals, an environment not without challenges. Right from the beginning the CIO appointed to the Alliance decided to address these challenges by implementing a high speed telecommunications network to reduce the costs of data, voice and video communications within the Alliance. The emergence of the truly virtual health care network in Victoria’s South West supported by external service providers but managed by a small yet powerful central ICT team holds a number of useful lessons for the delivery of services in start up cooperative organizations, particularly regional, rural and remote (R3) organizations.

Inclusion and accountability: communications research with consumers with disabilities

Over the past two decades there has been an increasing focus on doing research with and for consumers rather than on consumers. Research that is collaborative and inclusive has been called for by people with disabilities. People with disabilities are a group of telecommunications consumers who are disadvantaged because of social barriers and access issues with equipment, services and information. In this paper, the benefits and challenges of collaborative (e.g. participatory, participatory action, emancipatory) research with these consumers and the processes that can facilitate inclusive and accountable research outcomes are addressed. Throughout the paper, four questions will be explored: Who determines which research issues are explored and the methods that are used? What is the level of consumer involvement in the research process? How can academics and government ensure that consumer-focused research is inclusive and participatory? How, and to whom, should research results be made available?

In the first part of the paper, the perspectives on consumer research by people with disabilities are presented. Respect for and appreciation of consumers' views underpins the philosophical stance needed by researchers and funding bodies before serious engagement in empowering, person-centred research can be successful.

In the second part of the paper, there is a focus on defining the features of collaborative research approaches. Participatory research, participatory action research, and emancipatory research are variations that incorporate differing levels of consumer involvement. Each of these, however, embrace shifts in philosophy and methods away from more traditional 'scientific' research. Such changes result in a greater sense of inclusion and project ownership by consumers.

The third part of the paper addresses some of the issues associated with collaborative research for consumers with disabilities, for academic researchers, and for government funding bodies. Differing understandings of the social nature of disablement influence attitudes toward consumer involvement and are demonstrated in the choice of research questions, project aims, and the methodologies used. Differing agendas are reflected in reactions to the traditional project requirements and processes of government, the preferred research methodologies of researchers, and the perceived accountability of researchers or government for the dissemination and sharing of research results. The challenges to successful engagement with consumers in collaborative research have been identified in the literature and a number of strategies recommended (Barnes, 2003; Clear, 1999; Mercer, 2002; Oliver, 1992, 1997; Zarb, 1997). Application of inclusive strategies by researchers and funding bodies is essential for positive change and inclusive, empowering outcomes.

The paper concludes with a case study of a DCITA-funded research project. The project is evaluated using participatory/emancipatory research criteria modified from Zarb (1992) and addresses consumer, researcher, and funding body participation. The four questions used in the discussion of the paper are applied to this particular project. In addition, the benefits and learnings from the project will be compared with the outcomes desired by consumers who espouse collaborative research approaches.

The impact of communications and understanding on the success of business/IT alignment

This article reports on an investigation of IS stakeholders communication and mutual understanding, and their impact on the success of business / IT alignment. In particular, by following a hermeneutic study of transcripts of two focus groups and several interviews conducted with senior business and IT executives, the paper explores the issues of modern business context and practices, project scope and structure, trust, language and nomenclature, and the barriers to the effective stakeholder communication and  understanding. The study results are finally compared against the standard model of business and IT alignment. The main unexpected finding being executives' pre-occupation with issues of "marginal" value to the alignment model, such as day-to-day management of communicative and understanding effectiveness, as opposed to the fundamental issues of strategy and infrastructure fit.

Comments on "A blind signal separation method for multiuser communications"

This correspondence first shows that the global convergence analysis of the method proposed in the above paper is incomplete. Then we provide a counter example to show that the sufficient condition for global convergence is incorrect.

Relational ethics, global business and information and communications technology: interconnections explored

This paper explores, through practitioner experience and literature review, the impact of increased use of information technology in a global business environment on relational ethics. These three variables interact in a dynamic field that supports and challenges global managers in entrepreneurial endeavors. While information and communication technology (ICT) is rapidly expanding, the opportunities for global business and relational ethics affects, and is affected by, the interconnections. Drawing on experiences from daily practice, current literature, and insights gained from a relational approach to ethics, readers are invited to reflect on the ways that relationships influence ethical actions—and outcomes—and how they can be improved. This analysis exposes the critical issues, develops a general framework and makes recommendations for ways to work with and further develop the interconnections between global business, ICT and relational ethics.

Online self-and-peer-assessment for teamwork in architecture and business communications

There is considerable evidence of general student scepticism regarding the purpose of team assignments and high levels of concern for the fairness of assessment procedures when all members of a team receive the same grade. Some educators are similarly anxious about not only the validity of team grades, but also the need to assess ongoing team processes in addition to the final assignment product. This paper offers self-andpeer-assessment (SAPA) as a fair, valid and reliable method of producing information about ongoing team processes. The paper examines a pilot study investigating an online SAPA tool originally developed for a small class of architecture students. This tool is adapted for use for by students completing team assignment in two further architecture design units and for a very large class of 800 business communication students. The sample students studied on four campuses, as well as in off campus and offshore modes. The paper focuses on the initial stages of the study to demonstrate how researchers from very different backgrounds collaborated to adapt the online tool and implement a pilot study whilst maintaining both comparability of assessment and integrity of research design.