The rapid expansion of urban areas worldwide is leading to native habitat loss and ecosystem fragmentation and degradation. Although the study of urbanisation’s impact on biodiversity is gaining increasing interest globally, there is still a disconnect between research recommendations and urbanisation strategies. Expansion of the Perth metropolitan area on the Swan Coastal Plain in south-western Australia, one of the world’s thirty-six biodiversity hotspots, continues to affect the Banksia Woodlands (BWs) ecosystem, a federally listed Threatened Ecological Community (TEC). Here, we utilise the framework of a 1989 review of the state of knowledge of BWs ecology and conservation to examine scientific advances made in understanding the composition, processes and functions of BWs and BWs’ species over the last 30 years. We highlight key advances in our understanding of the ecological function and role of mechanisms in BWs that are critical to the management of this ecosystem. The most encouraging change since 1989 is the integration of research between historically disparate ecological disciplines. We outline remaining ecological knowledge gaps and identify key research priorities to improve conservation efforts for this TEC. We promote a holistic consideration of BWs with our review providing a comprehensive document that researchers, planners and managers may reference. To effectively conserve ecosystems threatened by urban expansion, a range of stakeholders must be involved in the development and implementation of best practices to conserve and maintain both biodiversity and human wellbeing.

Introduction The rapid increase in apartment construction in Australia has raised concerns about the impacts of poorly designed and located buildings on resident health and well-being. While apartment design policies exist, their content varies across jurisdictions and evidence on their impact on health and well-being is lacking. This cross-sectional observational study (2017–2021) aims to generate empirical evidence to guide policy decisions on apartment development and help to create healthy, equitable higher-density communities. Objectives include to benchmark the implementation of health-promoting apartment design requirements and to identify associations between requirements and resident health and well-being outcomes. Methods and analysis Eligible buildings in three Australian cities with different apartment design guidelines will be stratified by area disadvantage and randomly selected (~n=99). Building architects, developers and local governments will be approached to provide endorsed development plans from which apartment and building design features will be extracted. Additional data collection includes a resident survey (~n=1000) to assess environmental stressors and health and well-being impacts and outcomes, and geographic information systems measures of the neighbourhood. The study has 85% power to detect a difference of 0.5 SD in the primary outcome of mental well-being (Warwick-Edinburgh Mental Well-being Scale) at a 5% level of significance. Analyses will compare policy compliance and health-promoting design features between cities and area disadvantage groups. Regression models will test whether higher policy compliance (overall and by design theme) is associated with better health and well-being, and the relative contribution of the neighbourhood context. Ethics and dissemination Human Research Ethics Committees of RMIT University (CHEAN B 21146-10/17) and the University of Western Australia (RA/4/1/8735) approved the study protocol. In addition to academic publications, the collaboration will develop specific health-promoting indicators to embed into the monitoring of apartment design policy implementation and impact, and co-design research dissemination materials to facilitate uptake by decision makers.

This paper explores the potential of a strategy for achieving infill development in Australian greyfield suburbs in which redesigned, ecologically enhanced urban parks, in areas with reasonable access to public transport, are employed to encourage, catalyze, and ultimately support, residential densification. This process involves the upzoning of a walkable catchment of selected greyfield urban parks to higher residential densities than the market is currently delivering. To encourage this upzoning in the local community, local parks are redesigned using an ecological-oriented approach that seeks to enhance both their ecological and social values. The parks’ redesign is likely to lead to an increase in land values, which, in turn, is anticipated to catalyze redevelopment. In combination with increased zoning densities, this strategy is hypothesized to lead to greater densification. It is proposed that, as the densification occurs, a needs-based assessment is conducted to determine the park equipment required by the increased park catchment population. The potential of this process is explored in an illustrative planning exercise in the local government area of Bayswater (Perth, Western Australia), which has significant infill targets and a large amount of sports field-dominated parkland. The paper concludes by arguing that a strategy of densification around public open space could potentially aid in greyfield suburbs achieving their infill targets, as well as lead to improved social and ecological outcomes.

By the end of 2020, the COVID-19 pandemic had exceeded 83 million cases worldwide. Given the shared origins of planning and public health, new living and social conditions have prompted an interest in how urban planning could respond to the pandemic’s associated implications. In 2020, a national online survey Plan My Australia was conducted among planning experts (n = 161), in part, to identify new challenges facing urban planning and design due to the pandemic. The findings reported here revealed that many experts identified better planning for future pandemics in Australia could require some reconsideration of city size, urban density, self-sufficiency, public transport use, open space provision and housing design.

With Australia’s population set to triple in the twenty-first century, its federal government is investing in decentralization. This is because Australian states exhibit high urban primacy, where one city is dominantly large. Institutional perspectives of primacy suggest political factors are usually significant drivers. For example, strong localism and decentralized settlement patterns are usually concomitant whilst the same can be said of centralized governance and primacy. It is unclear how institutions might influence primacy in Australia’s large states. To better understand, we contextualize Australian federalism within the primacy debate. Using eighteen measures of intergovernmental power, we determined that the Australian federation is comprised of comparably strong federal and state tiers, underlaid by weak local and regional government. The results suggest primacy in Australian states is reinforced by institutions, contrasting the universality of environmental determinism and suggesting an opportunity to decentralize Australia’s growing population through the devolution of decision making powers.

Increased heat stress and sea-level rise, associated with climate change could threaten the viability of some cities by the latter part of this century. This paper reviews urban development patterns in Dubai and Abu Dhabi, in the United Arab Emirates, and concludes these cities are highly vulnerable to elevated wet-bulb temperatures and sea level rise. This is predominantly due to the focus of development along the Gulf coastline, where these issues are concentrated. In response, this paper ventures regional planning responses to adapt to these threats through decentralising populations to inland areas.