Danish Street Trees. Image: Thami Croeser
First it was the hopeful-but-questionable ‘One Trillion Trees’ initiative, announced at the World Economic Forum in Davos, with supporters as diverse as Jane Goodall and Donald Trump. At the same time, large areas of Australia were on fire – in total, estimates are that we lost 20% of our forest cover in the climate-change-driven ‘Black Summer’ fires that only recently subsided.
Recent collaborative research from our lab brings the focus back onto our urban trees. While a few billion hectares of new forest may slightly slow climate change at a macro level, we also need immediate solutions in our cities. In the places that most of us live and work, trees have an important role to play in helping us adapt to the warming (and flooding) that’s already locked in.
The thing is, we’re losing quite a lot of trees to construction, and even well-resourced teams are working hard to keep ahead of losses. In a new paper, Thami Croeser (ICON Science) led a team which found that The City of Melbourne has lost over 10,000 street trees in the decade of 2008-2017; 2000 of these were within 10m of a major development.
The good news is most of these were small trees, possibly reflecting the city’s tough controls on tree removal. The original research was published in Sustainable Cities and Society; we also had media pickup from The Conversation and Domain, where we talk a bit about how improvements in tree planting, tree protection and building greening can all play a role in keeping our cities green as they grow.
– Thami Croeser
by Laura Mumaw
Eastern spinebill in a Victorian garden (Photo by Patrick Kavanagh)
In this article we explore how the Knox Gardens for Wildlife program, a collaboration between a municipality (Knox City Council) and community group (Knox Environment Society) in greater Melbourne involves residents in gardening to help conserve indigenous biodiversity. We used semi-structured interviews and Council survey data to identify key program features that engaged and supported members to modify their gardening: on site garden assessment; community nursery; communication hubs; a framework that fosters experiential learning and community linkages; and endorsement of each garden’s potential contribution. We discuss the implications for managing urban landscapes for biodiversity conservation.
Click here for the full article or feel free to email me at email@example.com for a copy.
Mumaw L, Bekessy S. (Online) Wildlife gardening for collaborative public–private biodiversity conservation. Australasian Journal of Environmental Management.
By Florence Damiens
Politics and context matter for conservation policy. That is why our research group, in collaboration with Brian Coffey and Lauren Rickards from RMIT University’s Centre for Urban Research, has just published a collective reply to Peter Kareiva and Emma Fuller’s article in Global Policy.
In brief, we argue that Kareiva’s and Fuller’s proposal does not sufficiently consider the core challenges faced by biodiversity conservation researchers and practitioners in this time of dramatic change, for people and nature. Conservation issues are context-dependent: ecological, economic, social, ethical and political. Embracing and responding to this complexity is a necessity when conceiving potential solutions for the future of conservation, humans and the biosphere.
While some of the approaches the authors promote may work in particular situations, we believe their proposal risks unintended and detrimental social and ecological consequences by presenting them as global solutions to complex problems that are context-dependent. In particular, their proposal does not address some of the key causes of biodiversity loss, i.e. over-exploitation of natural resources, intensive agricultural activity, urban development, and pollution. These causes are accepted as fait accompli and their mitigation as potential conservation strategies is not considered. New technologies and ‘managing for evolution’ are presented as guiding principles for any context, which is problematic. Moreover, the questions around what should be conserved, the processes by which biodiversity is valued, and who has the legitimacy to value it are not addressed. Lastly, we argue that a one-size-fits-all utilitarian approach and a neoliberal governance model, as proposed by Kareiva and Fuller, risks poor involvement or opposition from communities and societies and may undermine their traditional structures and relationships with nature.
See our full reply here: Damiens et al. (Online, 13 March 2017)
If you can’t access the paper using this link please send me an e-mail (firstname.lastname@example.org) and I will send you the pdf directly – thanks!
The health and well-being of urban residents is intrinsically linked to green spaces and their biodiversity. Yet little is known about the mechanisms through which green space design delivers biodiversity and human well-being benefits. Through our recently funded Australian Research Council – Linkage Project ‘Designing green spaces for biodiversity and human well-being’ (LP160100324) we aim to discover those mechanisms, contributing to theoretical knowledge about socio-ecological interactions, and to practical knowledge about effective urban design. We aim to:
1. Investigate the mechanisms linking green space design to biodiversity outcomes;
2. Investigate the mechanisms linking green space to human well-being; and
3. Develop best practice urban design guidelines that reflect these mechanisms and supports biodiversity and human well-being.
The involvement of a major city council (The City of Melbourne), an international consulting agency (Arup), a landscape design firm (Phillip Johnson Landscapes) and an environmental NGO (Greening Australia) as Partner Organisations provides a unique opportunity to ensure the results of our project will have an impact on urban greening practice.
The Chief Investigators in this ARC-Linkage Project are: A/Prof Sarah Bekessy (RMIT University), A/Prof Richard Fuller (University of Queensland), A/Prof Dieter Hochuli (University of Sydney), Dr Fiona Fidler (University of Melbourne), Dr Cecily Maller (RMIT University), Dr Ascelin Gordon (RMIT University), Dr Georgia Garrard (RMIT University), Dr Christopher Ives (University of Nottingham), Dr Luis Mata (RMIT University) and A/Prof Adrian Dyer (RMIT University).