Sustainability and health : supporting global ecological integrity in public health

Radical changes in the biosphere and human interaction with the environment are increasingly impacting on the health of populations across the world. Diseases are crossing the species barrier, and spreading rapidly through globalized transport systems. From new patterns of cancer to the threat of global pandemics, it is imperative that public health practitioners acknowledge the interdependence between the sustainability of the environment and the sustainability of the human species.* Why are issues of global and local sustainability of increasing importance to the public's health?* Why do issues of sustainability require new practices within the professions of public health?* How can future and current public health practitioners develop those new practices?Drawing on scientific evidence of global and local environmental changes, Sustainability and Health offers a thorough background and practical solutions to the overlapping issues in environment and health. It examines potential and existing responses to global and local environment and health issues, involving individuals, community, industry and government. The authors introduce a range of emerging conceptual frameworks and theoretical perspectives, link IT and epidemiology and explain how scoping can link program design, delivery, data collection and evaluation in projects from their very beginning. Public health practitioners need to be able to manage health issues that cut across environmental, economic and social systems and to develop the capacity for leadership in facilitating change. Incorporating learning activities, readings, international case studies and an open learning approach, this is a valuable resource for students of public and environmental health, as well as medical, environmental and health science professionals.

Ecological fire regimes for the recovery and management of threatened small mammals in southern Australia

The application of fire to fauna management, particularly for endangered species, is a significant issue for wildlife managers. Mammals respond to fire regimes including intensity, frequency and season of occurrence, and changes in fire-regimes are implicated in detrimental effects on mammal communities. For many species temporal habitat change is a key factor affecting the persistence of populations. These species require the option of colonising the shifting habitat mosaic. There is substantial evidence that species such as the native rodents New Holland Mouse (Pseudomys novaehollandiae) and Heath Rat (Pseudomys shortridgei) are early successional species dependent on such temporal habitat changes. In conrast species such as the dasyurid marsupial, Swamp Antechinus (Antechinus minimus) are late successional species, which may take up to 20 years to recolonise. In many situations ecological fire regimes need to be implemented to increase areas of suitable habitat for population expansion and reintroductions. This paper assesses research findings and the development of management actions incorporating ecological fire regimes for the recovery of Pseudomyine rodents and the Swamp Antechinus. Spatially explicit models are required to determine changes and patterns at the landscape level. The prospect of global climate change also is of significance and needs to be assessed.

Immunology-based subspace detectors for anomaly detection

A key problem in high dimensional anomaly detection is that the time spent in constructing detectors by the means of generateand-test is tolerable. In fact, due to the high sparsity. of the data, it is ineffective to construct detectors in the whole data space. Previous investigations have shown that most essentIal patterns can be discovered in different subspaces. This inspires us to construct detectors in signIficant subspaces only for anomaly detection. We first use ENCLUS-based method to discover all significant subspaces and .then use a greedy-growth algorithm to construct detectors in each subspace. The elements used to constItute a detector are gods Instead of data points, which makes the time-consumption irrelevant to the size of the nonnal data. We test the effectiveness and efficiency of our method on both synthetic and benchmark datasets. The results reveal that our method is particularly useful in anomaly detection in high dimensional data spaces.

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.

A checklist for ecological management of landscapes for conservation

The management of landscapes for biological conservation and ecologically sustainable natural resource use are crucial global issues. Research for over two decades has resulted in a large literature, yet there is little consensus on the applicability or even the existence of general principles or broad considerations that could guide landscape conservation. We assess six major themes in the ecology and conservation of landscapes. We identify 13 important issues that need to be considered in developing approaches to landscape conservation. They include recognizing the importance of landscape mosaics (including the integration of terrestrial and aquatic areas), recognizing interactions between vegetation cover and vegetation configuration, using an appropriate landscape conceptual model, maintaining the capacity to recover from disturbance and managing landscapes in an adaptive framework. These considerations are influenced by landscape context, species assemblages and management goals and do not translate directly into on-the-ground management guidelines but they should be recognized by researchers and resource managers when developing guidelines for specific cases. Two crucial overarching issues are: (i) a clearly articulated vision for landscape conservation and (ii) quantifiable objectives that offer unambiguous signposts for measuring progress.

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.

Community development and ecology : engaging ecological sustainability through community development : selected papers from a conference held in Melbourne, 26-28 March 2008

The papers consider such questions as how to build community resilience in the context of profound environmental threat, how to ensure sustainability through community processes and how to assess community progress in responding to threats to the ecosystem.

Why do young women drop out of sport and physical activity? A social ecological approach

This study explored significant individual, social, and environmental factors and how they interact to influence participation in physical activity for adolescent young women. These factors were explored at two transitional life stages: from primary to secondary school and from middle to upper years at secondary school. Ten focus groups with young women and 10 interviews with teachers were conducted and multiple, interrelated themes emerged. Our findings indicated that there are a number of strategies that could be undertaken to increase the participation of young women in physical activity. These include: (1) enhancing intrinsic motivation for sport and physical activity; (2) appealing to young women’s need for socialising through opportunities for informal physical activity; (3) educating parents about the benefits of sport and physical activity; (4) overcoming gender stereotypes about what is acceptable behaviour for young women; (5) improving physical education teachers’ understanding of gender issues and motivating less physically active students; (6) the provision of accessible sport and physical activity facilities, programs, and services in schools; and (7) prioritorisation of sport and physical activity in the school curriculum. These strategies are not ‘quick fixes’, but rather require a whole-ofcommunity approach and, in some cases, a reorientation of societal values.