A predictive model of avian natal dispersal distance provides prior information for investigating response to landscape change

1. Informative Bayesian priors can improve the precision of estimates in ecological studies or estimate parameters for which little or no information is available. While Bayesian analyses are becoming more popular in ecology, the use of strongly informative priors remains rare, perhaps because examples of informative priors are not readily available in the published literature.

2. Dispersal distance is an important ecological parameter, but is difficult to measure and estimates are scarce. General models that provide informative prior estimates of dispersal distances will therefore be valuable.

3. Using a world-wide data set on birds, we develop a predictive model of median natal dispersal distance that includes body mass, wingspan, sex and feeding guild. This model predicts median dispersal distance well when using the fitted data and an independent test data set, explaining up to 53% of the variation.

4. Using this model, we predict a priori estimates of median dispersal distance for 57 woodland-dependent bird species in northern Victoria, Australia. These estimates are then used to investigate the relationship between dispersal ability and vulnerability to landscape-scale changes in habitat cover and fragmentation.

5. We find evidence that woodland bird species with poor predicted dispersal ability are more vulnerable to habitat fragmentation than those species with longer predicted dispersal distances, thus improving the understanding of this important phenomenon.

6. The value of constructing informative priors from existing information is also demonstrated. When used as informative priors for four example species, predicted dispersal distances reduced the 95% credible intervals of posterior estimates of dispersal distance by 8-19%. Further, should we have wished to collect information on avian dispersal distances and relate it to species' responses to habitat loss and fragmentation, data from 221 individuals across 57 species would have been required to obtain estimates with the same precision as those provided by the general model.

Predicting landscape-genetic consequences of habitat loss, fragmentation and mobility for multiple species of woodland birds

Inference concerning the impact of habitat fragmentation on dispersal and gene flow is a key theme in landscape genetics. Recently, the ability of established approaches to identify reliably the differential effects of landscape structure (e.g. land-cover composition, remnant vegetation configuration and extent) on the mobility of organisms has been questioned. More explicit methods of predicting and testing for such effects must move beyond post hoc explanations for single landscapes and species. Here, we document a process for making a priori predictions, using existing spatial and ecological data and expert opinion, of the effects of landscape structure on genetic structure of multiple species across replicated landscape blocks. We compare the results of two common methods for estimating the influence of landscape structure on effective distance: least-cost path analysis and isolation-by-resistance. We present a series of alternative models of genetic connectivity in the study area, represented by different landscape resistance surfaces for calculating effective distance, and identify appropriate null models. The process is applied to ten species of sympatric woodland-dependant birds. For each species, we rank a priori the expectation of fit of genetic response to the models according to the expected response of birds to loss of structural connectivity and landscape-scale tree-cover. These rankings (our hypotheses) are presented for testing with empirical genetic data in a subsequent contribution. We propose that this replicated landscape, multi-species approach offers a robust method for identifying the likely effects of landscape fragmentation on dispersal.

An Eyre Peninsula report card : adaptation practice and research in the far west of South Australia

The formation of Natural Resource Management Boards in South Australia provided a robust and integrated, and well resourced, regional landscape planning quasi-­‐authority in South Australia that has had major beneficial outcomes to several SA regions in being able to better co-­‐ordinate long term and creative public and private land management strategies, as well as enable several unique research projects to be tackled that would not otherwise under traditional fragmented state government agency configurations and relationships.

Wurdi Youang : re-thinking myths about landscape and Indigenous science

Despite recent political attempts to re-write the terra nullius myth for Australia, additional Indigenous sub-myth layers about landscape stewardship and cultural knowledge have been substantially overlooked. Pre-contact Indigenous scientific knowledge, landscape architecture strategies, and land stewardship histories and practices have received little legitimate credibility or academic discourse in this rewriting. One sub-myth is that Indigenous Australians have no astronomical scientific expertise and knowledge and that there is no physical evidence of this expertise. Thus, Indigenous Australians possess no ability to translate Dreaming story to astrological configuration, nor explore astronomy. Such is increasingly becoming a myth as it belies a suite of landscape architectural installations and cosmological narratives now being documented and researched. This paper addresses this myth by bringing forth a review of Indigenous cosmological knowledge for south-eastern Australia, with a substantive discussion about archaeo-astronomical evidence. The paper explains the cultural importance of the Wurdi Youang landscape installation for the Wathaurong community, and its role in Australian landscape architectural histories and practice.

An entrenched bill of rights : a protection for the rights of minorities

This paper is concerned with the question of whether Australia would be better served by the inclusion of an entrenched Bill of Rights in the Constitution of the Commonwealth of Australia. In particular, attention will focus on the abuses of minorities that are all but certain to arise in any society that is based on majoritarian rule. This paper will also examine the question of whether an entrenched Bill of Rights would serve as an effective safeguard against such abuses, especially where the rights of unpopular minorities are involved. The analysis to follow is undertaken against the backdrop of the efficacy, or the lack thereof, of the Constitution of the United States in preventing such abuses, and particularly that portion of the American Constitution that is known as the Bill of Rights.

Exporting detention : Australia-funded immigration detention in Indonesia

Since 2000, Australia has provided significant levels of funding and resources to encourage Indonesia to use immigration detention to deter asylum seekers from making the onward journey to Australia. In this way Australia has effectively extended its domestic policy of immigration detention beyond its own national borders. The provision of Australian funding for detention in Indonesia has resulted in an increased propensity of Indonesian officials to detain. This article examines the outcomes and implications of this transfer of immigration detention policy for asylum seekers and refugees in Indonesia. It draws on interviews conducted with individuals who have spent time in Indonesia’s immigration detention centres, and Indonesian immigration officials, to assess the conditions of the detention centres. The particular arrangement between Australia and Indonesia, however, fails adequately to protect the human rights of immigration detainees. Ultimately, the detention of asylum seekers in Indonesia serves as one more barrier to finding effective protection in the Asia-Pacific region.

Learning from sustainable landscapes of death in Bali : landscape planning and Tri Hita Karana

Landscape planning in many countries is predicated upon on fulfilling the functions for human living objectives. Many land use practices have been plotted for living, busines~, trading, industrial, farming as well as providing places for dead people primarily through cemeteries. Research in Palm Beach County, FL, has demonstrated the need to plan for 30 years of demand of land use functions to service death (Coutts, Basmaj ian et al. 20 I I). Coutts et al assert that planners are required and responsible for the planning of funeral necessities. Therefore, the protection of landscapes of death is an important consideration in the planning of landscapes. Bali is popular with its beautiful landscape, hospitality, and traditional architecture as demonstrating the integrity between human, environment and God, as expressed in the Balinese Tri Hita Karana concept. Balinese commemorate life from birth to death through their traditional ceremonies which informs their traditional cultural landscape. One of the most important landscapes, which cannot be separated fi·om Balinese life are graveyards which are used for deceased ceremonies. This landscape is an integral part of traditional village patterns across Bali. Culturally, Balinese people have their own traditional cremation ceremony which is call the Ngaben Ceremony. The Ceremony takes place in graveyards and thereupon ashes are placed in the sea waters surrounding Bali. An interesting point of planning in Bali is how to enable eco-friendly interment extensions to villages. This is occurring because of the increasing number of corpses that require cremation thus necessitating no accretions in land provision of graveyards. This research investigates the landscape of death in Bali expressed in its traditional values in the area of planning which implicate sustainable environments and land conservation topics. Other functions of graveyards, as noted by Strangstad ( 1988), include ceremonial and their role as educational tools for history lessons, art, sociology, geology, English lessons, as well as for scavenger hunts.

Breaking Boundaries : recasting the “local” newspaper as “geo-social” news in a digital landscape

This paper reconceptualises the role of the small “local” newspaper in a new media environment and argues that definitions and concepts currently used to describe and define such publications are becoming increasingly problematic as newspapers shift into both print and online formats. The paper highlights the continued importance of geography for such newspapers at a time when there is wide academic debate on the relevance of territory and boundaries and the impact of time–space compression in a new media world. It argues, however, that a focus on a newspaper’s geographic connection must also acknowledge the increasing boundlessness and openness of the social space in which a newspaper operates. Ultimately this paper suggests the concept of “geo-social” news may be a more appropriate framework for scholars to consider such publications. I draw on the work of geography scholars, and discussions around “space” and “place” to construct the notion of “geo-social” news, highlighting some exemplars of small commercial newsroom practices in Australia, the United Kingdom and Canada and discussions with newspaper editors in Australia to demonstrate the relevance of the “geo-social” concept.

Little evidence that condition, stress indicators, sex ratio, or homozygosity are related to landscape or habitat attributes in declining woodland birds

Habitat loss, fragmentation and degradation are drivers of major declines in biodiversity and species extinctions. The actual causes of species population declines following habitat change are more difficult to discern and there is typically high covariation among the measures used to infer the causes of decline. The causes of decline may act directly on individual fitness and survival, or through disruption of population processes. We examined the relationships among configuration, extent and status of native vegetation and three commonly used indicators of individual body condition and chronic stress (haemoglobin level, haematocrit, residual body mass condition index) in 13 species of woodland-dependent birds in south-eastern Australia. We also examined two measures of changes to population processes (sex ratio and individual homozygosity) in ten species and alleic richness in five species. We found little support for relationships between site or landscape characteristics and individual or population response variables, notwithstanding that our simulations showed we had sufficient power to detect relatively small effects. We discuss possible causes of the absence of detectable habitat effects in this system and the implications for the usefulness of individual body condition and easily measured haematological indices as indicators of the response of avian populations to habitat change. © 2012 The Authors.

A journey through places: politics of spatial location in the stories of South Asian diaspora in Australia

In this paper, I analyse the post-colonial and post-modern experiences in the light of questions and issues concerning the spatial identities or locations that the diasporans carry. By politics of spatial location, I mean a migrant's positions within power hierarchies created through geographic, historical, political, economic and other socially stratifying factors in the new homeland. This paper is mainly concerned with the theoretical ways in which a shift is accelerated in Australia's literary landscape by the South Asian diasporic writers who produce and cover the dynamics of politics of location in different contexts. It also focuses on South Asian diaspora's widely agreed ‘ability to recreate their cultures in diverse locations’. I conclude that these stories are not just of spaces but also of a promising future for the South Asian diaspora in Australia.

Lessons from large-scale conservation networks in Australia

Australia has seen a rapid growth in the establishment of networks of lands managed for connectivity conservation across tenures, at landscape and sub-continental scales. Such networks go under a variety of names, including biosphere reserves, biolinks, wildlife corridors and conservation management networks. Their establishment has varied from state government-led initiatives to those initiated by non-government organizations and interested landholders. We surveyed existing major landscape scale conservation initiatives for successes, failures and future directions and synthesized common themes. These themes included scale, importance of social and economic networks, leadership, governance, funding, conservation planning, the role of protected areas and communication. We discuss the emergence of national policy relating to National Wildlife Corridors in Australia and the relationship of this policy to the long standing commitment to build a comprehensive, adequate and representative National Reserve System. Finally we outline areas for further research for connectivity conservation projects in Australia.

Ecological determinism in Australia : tracing the legacy of McHarg downunder and its key precedents

Ecological planning, as advocated by Ian McHarg, filtered extensively through North America following the publication of Design with Nature (1965). The integrated design and planning approach was also advanced by numerous graduates of McHarg's studios at the University of Pennsylvania where this approach was extensively trialled and proven. While a clear synthesis and theoretical framework was articulated and reinforced through a plethora of projects, monographs, and articles, the majority of these perspectives were North American, lacked clarity about the translation of the approach into legal strategic and statutory planning instruments, nor shed light upon what transpired in Australia. This paper reviews the development of the Conservation Plan created for the southern Mornington peninsula in Victoria, Australia, as well as its intent, structure and internal workings as a successful model of ecological statutory planning, in the context of the wider WPRPA activities that draws directly from the McHarg theory. Known as the Conservation Plan for the southern Mornington Peninsula in Victoria, a revolutionary planning structure devised in the early 1970s by several Australian proponents. The Conservation Plan continues in operation today curating a high scenic valued landscape protecting it from intrusion from the growing metropolitan city of Melbourne thus fulfilling its objectives of landscape quality conservation whilst still permitting sympathetic building and land use growth. Contextually, the Conservation Plan appears to be only statutory equivalent translation of the approach internationally other than the Pinelands Commission planning processes in New Jersey.

The potential for measuring ethnicity and health in a multicultural milieu - the case of type 2 diabetes in Australia

Objective
Ethnicity influences health in many ways. For example, type 2 diabetes (T2DM) is disproportionately prevalent among certain ethnic groups. Assessing ethnicity is difficult, and numerous proxy measures are used to capture its various components. Australian guidelines specify a set of variables for measuring ethnicity, and how such parameters should be categorised. Using T2DM data collections as an illustrative example, this study sought to examine how ethnicity is measured in Australian health databases and, by comparing current practice with Australia’s existing benchmark recommendations, to identify potential areas for improvement of the health data landscape.

Community-based efforts to prevent obesity: Australia-wide survey of projects

Issues addressed: