An Inventory of Australian Estuaries and Enclosed Marine Waters: An Overview of Results.

The results of a recently completed inventory of Australian estuaries and enclosed marine waters are summarised The inventory was compiled to gain a national perspective on the ecological status of estuaries and to ufentify research and management priorities The database shows that most estuaries in northern and western Australia have been relatively unaffected by human activity. In contrast estuaries in eastern and southern Australia generally have lower water quality and greater catchment clearance and a high percentage face real threats to their conservation values The estuaries in N.S. W. and VicroM have the most ertensive literature available. The results suggest that, given clearly defined management priorities, many representative and important features can still be adequatety conserved in a national system of estuarine reserves Subject areas where more research is needed include individual catchment characteristics, water quality, fihehs and conservation values and more detailed mapping. especially for seagrass beds and intertidal mud banks.     

Justifying exclusion: The politics of public space and the dispute over access to McIvers ladies' baths,Sydney

McIvers Baths is an ocean pool in the Sydney beach of Coogee which is open to women and children only. In December 1992, a male resident of Coogee lodged a formal legal complaint of 'discrimination on the grounds of sex' with the Anti-Discrimination Board of New South Wales. Over the next three years, a coalition of activists and institutions campaigned successfully to oppose this complaint and maintain the exclusion of men from McIvers. In this article, the author considers some of the implications of this dispute for contemporary debates over the meaning of urban public space. Drawing on recent re-theorisations of urban public space and the political public sphere, the author suggests that the problematisation of exclusion in critical urban analysis should not necessarily take the form of opposition to exclusion per se. Rather, exclusions should be interrogated with respect to processes through which they are politically justified, thus enabling critical theorists to distinguish between different kinds of exclusion. The article offers some reflections on the dispute over McIvers as a way of thinking through some of the conditions in which certain forms of exclusion might be compatible with a democratic 'right to the city'.     

Spatial and Temporal Patterns of Recreational Angling Effort in a Warm‐Temperate Australian Estuary

Among the critical issues for the management of estuarine fish resources is the need to adequately identify the extent of use by recreational fishers, and the allocation of the resource between recreational and commercial users. Recreational anglers in estuaries often target a similar range of estuarine fish species to commercial fishers. Prior to the declaration of ‘recreational fishing havens’ (estuarine waters closed to commercial netting but remaining open to recreational angling) in many New South Wales (NSW) estuaries in May 2002, the estuary of the Manning River on the central NSW coast supported the tenth most productive commercial estuarine net fishery in the State. To quantify the recreational angling effort in the Manning River estuary, progressive counts were made of shore‐based and boat‐based anglers from a small power boat from June 2001 to May 2002. Sample days (eight per month) were chosen in a stratified random fashion, taking into account the proportions of weekends, public holidays and school holidays in each month. The total recreational angling effort exerted on the estuary for the 12‐month period was 144 892 ± 3248 angler‐hours, indicating a low to medium effort compared to other NSW estuaries of similar size. Over half of the effort was exerted in the section nearest the northern entrance at Harrington. There was relatively little variation in shore‐based angling effort throughout the year, whereas boat‐based fishing increased markedly in summer. Months that coincided with NSW school holidays were most popular, especially January. More recreational fishing effort was exerted in the afternoons than in the mornings during winter, but this trend was reversed in summer. Although daily effort was much higher on weekends than weekdays, the total cumulative effort was generally similar, due to the greater number of weekdays in the year. Pilot studies of catch per unit effort indicate that the recreational catch in the Manning River estuary is probably small compared to the pre‐closure commercial catch. Therefore management strategies aimed at limiting the recreational catch are likely to have minimal impact on fish stocks in the estuary when compared with regulation of the commercial sector.     

The upper continental crust, an aquifer and its fluid: hydaulic and chemical data from 4 km depth in fractured crystalline basement rocks at the KTB test site

Detailed information on the hydrogeologic and hydraulic properties of the deeper parts of the upper continental crust is scarce. The pilot hole of the deep research drillhole (KTB) in crystalline basement of central Germany provided access to the crust for an exceptional pumping experiment of 1‐year duration. The hydraulic properties of fractured crystalline rocks at 4 km depth were derived from the well test and a total of 23100 m³ of saline fluid was pumped from the crustal reservoir. The experiment shows that the water‐saturated fracture pore space of the brittle upper crust is highly connected, hence, the continental upper crust is an aquifer. The pressure–time data from the well tests showed three distinct flow periods: the first period relates to wellbore storage and skin effects, the second flow period shows the typical characteristics of the homogeneous isotropic basement rock aquifer and the third flow period relates to the influence of a distant hydraulic border, probably an effect of the Franconian lineament, a steep dipping major thrust fault known from surface geology. The data analysis provided a transmissivity of the pumped aquifer T = 6.1 × 10^?6 m² sec^?1, the corresponding hydraulic conductivity (permeability) is K = 4.07 × 10^?8 m sec^?1 and the computed storage coefficient (storativity) of the aquifer of about S = 5 × 10^?6. This unexpected high permeability of the continental upper crust is well within the conditions of possible advective flow. The average flow porosity of the fractured basement aquifer is 0.6–0.7% and this range can be taken as a representative and characteristic values for the continental upper crust in general. The chemical composition of the pumped fluid was nearly constant during the 1‐year test. The total of dissolved solids amounts to 62 g l^?1 and comprise mainly a mixture of CaCl₂ and NaCl; all other dissolved components amount to about 2 g l^?1. The cation proportions of the fluid (X_Ca approximately 0.6) reflects the mineralogical composition of the reservoir rock and the high salinity results from desiccation (H₂O‐loss) due to the formation of abundant hydrate minerals during water–rock interaction. The constant fluid composition suggests that the fluid has been pumped from a rather homogeneous reservoir lithology dominated by metagabbros and amphibolites containing abundant Ca‐rich plagioclase.     

Justice and Injustice in the City

Following a recent growth of interest in questions of justice and the city, this paper considers how the work of contemporary critical urbanists compares with earlier accounts of urban justice and injustice. Our purpose in making this comparison is to consider how scholars concerned with justice and injustice in the city might better articulate the conceptual relationship between justice‐thinking and (in)justice‐documenting in their writings about the contemporary planned city. Using a selection of influential texts as evidence, our comparative commentary on past and present approaches focuses on three issues we think are crucial to this relationship. First, with the rise of analyses of the politics of difference, concepts of justice stressing procedure, process, and the hearing of multiple voices have come to the fore recently, especially in urban planning. Second, contemporary writers about geographies of justice have queried the value of using pre‐formulated, philosophical justice norms to judge outcomes and processes in particular contexts, seeing justice, rather, as intuited in the enactment of social conflicts and practices in those actual situations. Third, questions about the spatiality of justice and injustice have been aired recently asking whether justice and injustice have primarily a social rather than a spatial ontology. The conclusion of our evaluative review is that similar issues are being named and investigated now as were four decades ago, in investigations of justice and injustice in cities, but that concerted debates about theory and epistemology have elaborated the conceptual focus of discussion. We call for grounded investigations of enactments of justice as well as of injustice.     

Air Services at Australian Cities: Change and Inertia 2005–2010

This research analyses international and domestic air services in Australia during a six year period, 2005–2010. We place air services into their urban context by relating them to city‐based measures such as population, tourism, and producer services employment among other measures. The research takes a supply‐side approach in an assessment of international and domestic capacity at major Australian airports from the perspective of the number of seats, the nature of links, and competition. Multiple linkage analysis and the concept of effective competitors allow us to explore this perspective at greater depth. Our findings show substantial changes in international patterns, specifically favouring Melbourne, Perth, and Gold Coast. In contrast, the domestic scene is characterised by little change, an outcome we link to the underlying stability in the settlement system and the location of some major economic activities. While the results are related to our measures of urban characteristics, some special region‐specific aspects are also at work. Finally, in both the international and domestic cases we find evidence of greater airline diversity which may benefit consumers.