Diversifying Ethnicity in Australia's Population and Environment Debates   总被引：1，自引：0，他引：1  

Natascha Klocker  Lesley Head 《The Australian geographer》2013,44(1):41-62

Population–environment debates in Australia are at an impasse. While the ability of this continent to sustain more migrants has attracted persistent scrutiny, nuanced explorations of diverse migrant cultures and their engagements with Australian landscapes have scarcely begun. Yet as we face the challenges of a climate changing world we would undoubtedly benefit from the most varied knowledges we can muster. This paper brings together three arenas of environmental debate circulating in Australia—the immigration/carrying capacity debate, comparisons between Indigenous and Anglo-European modes of environmental interaction, and research on household sustainability dilemmas—to demonstrate the exclusionary tendencies of each. We then attempt to reorient them in productive ways, by attending to the complexity of environmental sustainability in a context of immense ethnic diversity. Attentiveness to ethnic diversity offers three important insights: (1) Anglo-European Australian understandings of nature and environmentalism are culturally specific, but other perspectives are possible; (2) tensions can arise when ethnic differences in environmental attitude or practice come into contact; and (3) cultural environmental research offers scope to identify ethnically diverse vernacular sustainability practices that should be supported. Each of these threads requires attention in a context where population–environment debates often overlook cultural complexity, and readily spiral into strident anti-immigration sentiments.  相似文献   

Prehistoric aboriginal impacts on Australian vegetation: an assessment of the evidence     

Lesley Head 《The Australian geographer》1989,20(1):37-46

To what extent were Australian vegetation patterns in 1788 a product of human activity? Pollen and charcoal evidence which addresses this question is reviewed. I discuss the nature of the evidence, particularly the difficulties involved in establishing relationships between charcoal and fire history, and between fire history and human activity. I then address the broader question from the perspectives of both time and space by examining three key periods which might be expected to provide relevant evidence: (i) the time of initial human colonisation of the continent; (ii) the late Holocene, when Aboriginal population densities are thought to have increased substantially; and (iii) the last 200 years, when Aboriginal influences on the landscape have been mostly removed. Impacts are likely to have been different in different environments, with vegetation types vulnerable to fire showing the most marked changes. I conclude with a discussion of ways alternative interpretations have been utilised by competing groups in land management debates.  相似文献   

Comments on a paper by D. Meisel entitled ‘Identification of a solar X-ray source using D-layer ionization behavior during an eclipse’     

A. C. Aikin  J. H. Underwood 《Solar physics》1970,11(2):334-337

  相似文献   

Analysing Product-Specific Behaviour to Support Process Dependent Updates in a Dynamic Spatial Updating Model     

Lesley M Arnold  Graeme L Wright 《Transactions in GIS》2005,9(3):397-419

A scale‐independent database that allows derived maps to be dynamically updated from a centrally maintained data source is an appealing alternative to traditional map revision techniques, which by today's standards are costly and inefficient. This paper presents a dynamic spatial updating model that supports automated updating of non‐standard maps in a scale‐independent database‐centric map production environment. Maps derived from the database are not separate data sets, but rather active views of the database. Each derived map is displayed in a unique way by implementing cartographic operations at the map level. While the operations applied require user involvement for strategic cartographic decisions, and algorithmic initiation and control, the technique allows geographic data to be processed cartographically without affecting the geometric integrity of the database. Each time a derived map is opened it retrieves the spatial data (and updates) from the database and applies the unique cartographic representation methods that persist on the individual derived maps. Database updates are automatically triggered to cartographic products, as process dependent updates, according to their individual product‐specific behaviour. This paper investigates product‐specific behaviour (product multiplicities) and the cartographic processing requirements to support dynamic spatial updating techniques in an object‐oriented map publishing environment. These techniques are implemented in an off‐the‐shelf software environment using ArcGIS.  相似文献   

Adding Human Health Risk Analysis Tools to Geographic Information Systems   总被引：2，自引：0，他引：2  

Ferdi L. Hellweger  Lesley Hay Wilson  Eugenia M. Naranjo  & Paul J. Anid 《Transactions in GIS》2002,6(4):471-484

The development of a module for performing human health risk analysis is presented. This risk module differs from other tools in that it is integrated into a geographic information system (GIS) in a plug–in fashion. The main challenge in the development of the risk module was handling the many different spatial data structures in an open GIS environment. Selection of programming language and other development issues are discussed. The application of the risk module to two mining activities in Bolivia is described.  相似文献   

A strategy for developing scientific sampling tools for fishery-independent surveys of estuarine fish in New South Wales, Australia   总被引：1，自引：0，他引：1  

Rotherham  D.; Underwood  A. J.; Chapman  M. G.; Gray  C. A. 《ICES Journal of Marine Science》2007,64(8):1512-1516

  相似文献   

Transverse infilling of the central Aleutian Trench by unconfined turbidity currents     

Michael B. Underwood 《Geo-Marine Letters》1986,6(1):7-13

Holocene sand layers cored from the central Aleutian Trench are dominated by volcaniclastic debris, and the only likely source is the central Aleutian volcanic arc. This creates something of an enigma because bathymetric obstructions seemingly prevent direct delivery of sediment via transverse canyons or channels. Turbidity currents are funneled through submarine canyons on the upper trench slope, but the flows become unconfined as they cross the midslope Aleutian Terrace. Evidently, the turbid flows maintain high enough velocities to climb over the trench-slope break; acceleration down the lower trench slope then allows forearc bypassing to occur without the aid of through-going channels.  相似文献   

Environmental status of several Shubenacadie River headwater lakes,Nova Scotia,Canada     

A. Mudroch  T. A. Clair  J. K. Underwood  P. Y. Schwarz 《GeoJournal》1987,14(3):311-317

The Shubenacadie River basin is the largest watershed in Nova Scotia, Canada, encompassing an area of approximately 2,800 km² and supporting one of the most rapidly expanding populations in Atlantic Canada. A comprehensive study was carried out to assess the effect of recent development in the basin on the headwater lakes. Information on the environmental status of the lakes can be further used in the development of a management framework for the basin with respect to water quality and quantity objectives.Water and sediment quality were investigated in four of the Shubenacadie River headwater lakes. In addition, trophic status of the lakes was assessed by using dissolved phosphorus and oxygen concentrations. The surface area and mean depth of the lakes ranged from 0.83 to 1.13 km² and 4.3 to 6.6 m, respectively. Three of the studied lakes were thermally stratified during the summer. The concentration of dissolved oxygen decreased significantly in the hypolimnion during the stratification period, although the lakes were generally classified as oligotrophic. The water quality is typical for lakes of the area. The pH of the water ranged between 6.1 and 7.3 during the study period. Major ions were chloride, sodium, and sulphate. A significant increase of As, Hg, Zn, Pb, Cu, Ni and Co was found in surface sediments in all four lakes. However, the concentration of these elements in lake water was lower than recommended guidelines for aquatic life and human consumption.  相似文献   

Seismic and Resistivity Investigations Near Norway, Michigan     

Joan E. Underwood  Katherine J. Laudon  Thomas S. Laudon 《Ground Water Monitoring & Remediation》1984,4(4):86-91

  相似文献   

New investigations of the strewn field of Libyan desert glass and its petrography     

Virgil E. Barnes  James R. Underwood 《Earth and Planetary Science Letters》1976,30(1):117-122

Twenty-six specimens of Libyan Desert glass were collected from the westernmost area of Libyan Desert glass occurrence during a joint expedition, 30 May to 5 June, 1971, of The University of Libya and The University of Texas. The Oasis circular structure, a suspected astrobleme southwest of the glass site, was also visited. In the glass, included minerals are partially altered through shock and temperature effects; microprobe analysis confirms one of these minerals as zircon and indicates that another is the elbaite variety of tourmaline. Tourmaline of the elbaite variety and zircon were also identified in a thin section of an analyzed sample of high-silica (99.6%) Nubian Sandstone collected in the area of glass occurrence. This silica content is higher than that of any Libyan Desert glass yet examined. In a heavy mineral separation of this sandstone, the minerals cordierite; green, brown, and blue tourmaline; and minor amounts of staurolite, zircon, and kyanite were identified. It is concluded, from the mineral and chemical evidence, that Libyan Desert glass was derived from Nubian Sandstone. Whether there is any connection between the origin of Libyan Desert glass and the origin of the nearby impact structures is undetermined.  相似文献