Gap-crossing decisions of forest birds in a fragmented landscape

Habitat loss and fragmentation are recognized as primary drivers of biodiversity loss worldwide. To understand the functional effects of habitat fragmentation on bird populations, data on movement across gaps in habitat cover are necessary, although rarely available. In this study, we used call playback to simulate a conspecific territorial intruder to entice birds to move through the landscape in a predictable and directional manner. We then quantified the probability of movement in continuous forest and across cleared gaps for two forest-dependent species, the grey shrike-thrush (Colluricincla harmonica) and the white-throated treecreeper (Cormobates leucophaeus). Fifty-four playback trials were conducted for each species across distances ranging from 25 to 480 m in continuous forest and 15-260 m across gaps in a forest-agricultural landscape in southern Victoria, Australia. The probability of movement was significantly reduced by gaps in forest cover for both species. Shrike-thrushes were six times more likely to move 170 m in continuous forest than to cross 170-m gaps. The mean probability that treecreepers would cross any gap at all was less than 0.5, and they were three times less likely to move 50 m across a gap than through continuous forest. Both species displayed non-linear responses to increasing gap distance: we identified a gap-tolerance threshold of 85 m for the shrike-thrush and 65 m for the treecreeper beyond which individuals were most unlikely to cross. The presence of scattered paddock trees increased functional connectivity for the shrike-thrush, with individuals crossing up to 260 m when scattered trees were present. We conclude that gaps in habitat cover are barriers to movement, and that characteristics of the intervening matrix influence landscape permeability.

Where and when to revegetate : a quantitative method for scheduling landscape reconstruction

Restoration of native vegetation is required in many regions of the world, but determining priority locations for revegetation is a complex problem. We consider the problem of determining spatial and temporal priorities for revegetation to maximize habitat for 62 bird species within a heavily cleared agricultural region, 11 000 km2 in area. We show how a reserve-selection framework can be applied to a complex, large-scale restoration-planning problem to account for multi-species objectives and connectivity requirements at a spatial extent and resolution relevant to management. Our approach explicitly accounts for time lags in planting and development of habitat resources, which is intended to avoid future population bottlenecks caused by delayed provision of critical resources, such as tree hollows. We coupled species-specific models of expected habitat quality and fragmentation effects with the dynamics of habitat suitability following replanting to produce species-specific maps for future times. Spatial priorities for restoration were determined by ranking locations (150-m grid cells) by their expected contribution to species habitat through time using the conservation planning tool, ‘‘Zonation.’’ We evaluated solutions by calculating expected trajectories of habitat availability for each species. We produced a spatially explicit revegetation schedule for the region that resulted in a balanced increase in habitat for all species. Priority areas for revegetation generally were clustered around existing vegetation, although not always. Areas on richer soils and with high rainfall were more highly ranked, reflecting their potential to support high-quality habitats that have been disproportionately cleared for agriculture. Accounting for delayed development of habitat resources altered the rank-order of locations in the derived revegetation plan and led to improved expected outcomes for fragmentation-sensitive species. This work demonstrates the potential for systematic restoration planning at large scales that accounts for multiple objectives, which is urgently needed by land and natural resource managers.

Thresholds, incidence functions, and species-specific cues : responses of woodland birds to landscape structure in south-eastern Australia

Looking out from a vantage point across a large tract of forest gives a superficial impression of uniformity: the crowns of canopy trees follow the folds and contours of the landscape to provide a continuous cover of wooded vegetation. But this visual appearance belies the truth: forested landscapes are far from uniform. On closer examination, they comprise a complex mosaic of different vegetation types and and stands of different age-classes, differing structural features, and modified to a varying extent by human land-uses. Forests have a critical role in the conservation of biodiversity throughout the world (Peterken 1996; Laurance and Bierregard 1997; Lindenmayer and Franklin 2002) and a key feature contributing to their conservation value is the response of forest biota to the heterogeneity inherent in forested landscapes (Lindenmayer et al. 2006). Consequently, an understanding of the implications of landscape structure for the maintainance of species and ecological processes is an important foundation for forest management and biodiversity conservation.

Engaging, exploring, and experiencing multicultural music in Australian music teacher education : the changing landscape of multicultural music education

ln multicultural Australia, the development of positive intercultural attitudes is essential in the creation of a harmonious society. Music education is a powerful medium to address cultural inclusivity. The 2005 National Review of School Music Education challenges Australian higher education institutions to prepare programs that explore multiculturalism to engender tolerance.This research explored how final year teacher education students at Monash University and Deakin University (Victoria, Australia) engage with music of other cultures and how this affects their understanding of cultural diversity in school music. From 2005 to 2008, teacher education students undertaking music methodologies were invited to participate in semi-structured interviews.The data collected from the interviews were transcribed and analyzed using interpretative phenomenological analysis, and from these data, we developed patterns of meaning that are reported thematically; student teachers' beliefs, attitudes, and understandings of multiculturalism and the classroom realities of multiculturalism.The findings contribute to how we, as tertiary educators, evaluate our role and programs.

Small mammals in a fragmented landscape

Small mammals displayed contrasting patterns of occurence in forest fragments. Population studies revealed that key processes responsible for survival in habitat patches include demographic flexibility and the movement of individuals between patches. Combining pattern- and process-based approaches provides a more complete understanding of fauna in modified landscapes.

Landscape pattern, countryside heterogeneity and bird conservation in agricultural environments

This study confirms the valuable contribution that agricultural landscapes make to bird conservation in Australia. While native vegetation is critical to conservation efforts, careful management of production land-use types may provide additional benefits. Results show that productive farm enterprises can make real contributions to the success of broader conservation goals.

Transformations : landscape in recent Australian fiction / Gillian Mary Tyas

Focusing on novels written since 1980 by Australian authors Rodney Hall, Liam Davison, Tim Winton, Elizabeth Jolley and Gerald Murnane, and engaging with responses to the land by visual and performing artists, this thesis explores the idea that the writer and artist are mediators in the multitude of experiences that constitutes landscape.

Poetry, politics and place : black and white perceptions of landscape in modern Australian poetry 1965-1990

Argues that the most influential landscape poetry deals with landscape as an aesthetic concept, and also with the politics of land ownership. Several "landscape poets". Aboriginal and non-Aboriginal, have given voice to some of the most compelling social currents in society, and their work has an important place in contemporary political debate.

Celluloid dreaming : cultural myths and landscape in Australian film 1970-1990

Examines the way in which cultural myths in selected Australian feature films of the 1970s and 1980s reflect changing attitudes towards nationalism, Australian identity, gender roles, mateship and how the Australian settler culture defines (or fails to define) its relationship with indigenous Australians.

Non-linear effects of landscape properties on mistletoe parasitism in fragmented agricultural landscapes

Ecological processes such as plant–animal interactions have a critical role in shaping the structure and function of ecosystems, but little is known of how such processes are modified by changes in landscape structure. We investigated the effect of landscape change on mistletoe parasitism in fragmented agricultural environments by surveying mistletoes on eucalypt host trees in 24 landscapes, each 100 km² in size, in south-eastern Australia. Landscapes were selected to represent a gradient in extent (from 60% to 2% cover) and spatial pattern of remnant wooded vegetation. Mistletoes were surveyed at 15 sites in each landscape, stratified to sample five types of wooded elements in proportion to their relative cover. The incidence per landscape of box mistletoe (Amyema miquelii), the most common species, was best explained by the extent of wooded cover (non-linear relationship) and mean annual rainfall. Higher incidence occurred in landscapes with intermediate levels of cover (15–30%) and higher rainfall (>500 mm). Importantly, a marked non-linear decline in the incidence of A. miquelii in low-cover landscapes implies a disproportionate loss of this species in remaining wooded vegetation, greater than that attributable to decreasing forest cover. The most likely mechanism is the effect of landscape change on the mistletoebird (Dicaeum hirundinaceum), the primary seed-dispersal vector for A. miquelii. Our results are consistent with observations that habitat fragmentation initially enhances mistletoe occurrence in agricultural environments; but in this region, when wooded vegetation fell below a threshold of ~15% landscape cover, the incidence of A. miquelii declined precipitously. Conservation management will benefit from greater understanding of the components of landscape structure that most influence ecological processes, such as mistletoe parasitism and other plant–animal mutualisms, and the critical stages in such relationships. This will facilitate action before critical thresholds are crossed and cascading effects extend to other aspects of ecosystem function.

Visions, illusions and facts : a reflection on the partnerships between academic libraries and vendors in the new information landscape

Is the industry in chaos? How do we to meet the future information needs of the international scholarly community?

The one certainty is that forecasting is never easy. Libraries, vendors and publishers are all working in a rapidly changing environment. It is a fair prediction that there will be fewer participants and less competition in the marketplace. The potential for libraries to be locked into one vendor for access to electronic journals is real. Whether this access will be in perpetuity, no one can give an absolute guarantee. Intellectual property rights, commercial viability and communication standards are all of concern.

We've seen the vision, what's happening now? The Australian academic and research library market has an international reputation for being informed, frank and through necessity, pragmatic. When planning information access and delivery for the next two to five years we are told libraries need a reasonable indication of what is real. Vendors, more than ever, are contributing to a shared understanding amongst libraries, publishers and vendors of the priorities and concerns of different sectors of the industry.

Professional experience in new times: issues and responses to a changing education landscape

This paper discusses policy and practice relevant to teacher education and professional experience programs in Australia, aiming to assist not only reading our past and present, but also offering strategic direction with respect to the challenges and opportunities that are emerging within the Australian context. A meta-analysis of current major trends in Australian educational reform and the implications of an 'education revolution' for professional experience are discussed. The paper maps and examines broadly key education agendas of 'productivity, participation and quality'. In relation to these agendas, significant policy trends are identified under the headings of partnerships, preparation and professional learning, and the implications of each for the field of teacher education and professional experience are explored. Some comparisons with similar reforms that have occurred in Scotland and England are offered to provide insights and alternative directions for those working in the field. Finally, a range of possibilities and suggestions, along with cautionary tales of locally based professional experience practices, are provided.