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1.
Illegal foreign fishing for sharks in Northern Australia has increased substantially over the last two decades. This has likely resulted in declines of shark species abundance, with potentially far‐reaching impacts on the ecosystem. This, in turn, could also have indirectly affected the legal prawn, shark, and other fisheries in the region through changed predation patterns and direct removal of targets. The prawn fishery in Northern Australia is currently one of Australia's most valuable fisheries. Sharks themselves are also a major target species by many Queensland and Northern Territory fishers. In this article, an ecosystem model developed in the Ecopath with Ecosim framework is used to estimate the impacts of illegal shark fishing on the remaining system, and the potential economic impacts on commercial fisheries in the region.  相似文献   

2.
Up to 60 per cent of potable water supplied to Perth, Western Australia, is extracted from the groundwater system that lies below the northern part of the metropolitan area. Many of the urban wetlands are groundwater‐dependent and excessive groundwater extraction and climate change have resulted in a decline in water levels in the wetlands. In order to inform decisions on conserving existing urban wetlands, it is beneficial to be able to estimate the economic value of the urban wetlands. Applying the Hedonic Property Price approach to value urban wetlands, we found that distance to the nearest wetland and the number of wetlands within 1.5 km of a property significantly influence house sales price. For a property that is 943 m away from the nearest wetland, which is the average distance to the wetland in this study, reducing the wetland distance by 1 m will increase the property price by AU$42.40. Similarly, the existence of an additional wetland within 1.5 km of the property will increase the sales price by AU$6976. For a randomly selected wetland, assuming a 20 ha isolated circular wetland surrounded by uniform density housing, the total sales premium to surrounding properties was estimated to be around AU$140 million (AU$40 million and AU$230 million).  相似文献   

3.
This paper reviews the literature on economic development as it relates to indigenous people in the United States and Canada, and focuses on how institutions affect economic development of reservation and reserve economies. Evidence shows that strong property rights to reservation and reserve land and natural resources, whether communal or individual, are and always have been important determinants of productivity. Political and legal institutions that are perceived as stable and predictable to tribal members and to non‐Natives also improve economic opportunities for indigenous people living on reservations and reserves. Research reviewed here also shows that culture and acculturation are important in the development process. Although our emphasis is on North America, the findings are applicable to indigenous people in other parts of the world and shed light on growth questions that loom large for developing countries around the world.  相似文献   

4.
Central governments have neither the capacity nor the local knowledge to implement a just, large-scale national land registration system. Support to local institutions to undertake intermediate forms of land registration has been shown to be far more effective in many places—although these need careful checks on abuses by powerful local (and external) interests, measures to limit disputes (too many of which can overwhelm any institution) and measures to ensure that the needs of those with the least power – typically women, migrants, tenants and pastoralists – are given due weight. These locally grounded systems can also provide the foundation for more formal registration systems, as needs and government capacities develop. Even if there are the funds and the institutional capacity to provide formal land title registration to everyone in ways that are fair and that recognize local diversity and complexity, and could manage disputes, this may often not be needed. For the vast majority of people, cheaper, simpler, locally grounded systems of rights registration can better meet their needs for secure tenure.  相似文献   

5.
The efficiency and equity effects of economic policies affecting the quarter of Australians who live in rural and regional Australia (RARA) are reviewed. For the most part it is argued that economy-wide policies, rather than region or industry specific policies, are appropriate. Progressive income taxation, means-tested social security payments and government funded education, health and other services directly and efficiently redistribute to support equity. Subsidies for particular industries in RARA, such as dairy, and input subsidies targeted at RARA, such as community service obligations, misallocate resources and are ineffective in meeting equity goals. Better property rights and procedures for allocating most natural resources, especially water, are necessary.  相似文献   

6.
The increasing prevalence of anthelmintic (drench) resistance in gastrointestinal parasite populations is decreasing the profitability of the Australian sheep industry. Refugia management can delay its development by not exposing a proportion of the worm population to chemical control. A dynamic‐optimisation model is used to assess the economic value of refugia for management of the worm species Teladorsagia circumcincta and macrocyclic lactone drenches in an application to Western Australian sheep flocks. A low rate of refugia (2 per cent) is most profitable under standard circumstances because it slows the development of resistance, but also reduces the proportion of the flock not exposed to chemical control. Frequent drench application should remain the primary method of control. However, its efficacy should be preserved through refugia management, rather than greatly reducing treatment frequency.  相似文献   

7.
Much publicity has been given to the problem of high levels of environmental contaminants, most notably high blood lead concentration levels among children in the city of Mount Isa because of mining and smelting activities. The health impacts from mining‐related pollutants are now well documented. This includes published research being discussed in an editorial of the Medical Journal of Australia (see Munksgaard et al. 2010 ). On the other hand, negative impacts on property prices, although mentioned, have not been examined to date. This study rectifies this research gap. This study uses a hedonic property price approach to examine the impact of mining‐ and smelting‐related pollution on nearby property prices. The hypothesis is that those properties closer to the lead and copper smelters have lower property (house) prices than those farther away. The results of the study show that the marginal willingness to pay to be farther from the pollution source is AUS $13 947 per kilometre within the 4 km radius selected. The study has several policy implications, which are discussed briefly. We used ordinary least squares, geographically weighted regression, spatial error and spatial autoregressive or spatial lag models for this analysis.  相似文献   

8.
The demand for education is partly revealed by a higher demand for properties around good schools, which has been the basis for a number of empirical studies. This research attempts to explore the nexus of school quality and the property market when school ranking is clearly available to the public. The spatial hedonic property valuation method was employed to analyze selected Brisbane public (state) and private schools consisting of those with high, middle and low ranking in terms of average student academic school performance. The results imply the capitalization of school values in both property and rental prices. The research also demonstrates the spillover impacts of school development. Such impacts are higher in comparison to previous studies, which are supported by the average school performance considered in individual assessments. The results of this study can be a valuable input into school policy reforms. (JEL: H23, I20, I28, R21)  相似文献   

9.
Governments in Australia are purchasing water entitlements to secure water for environmental benefit, but entitlements generate an allocation profile that does not correspond fully to environmental flow requirements. Therefore, how environmental managers will operate to deliver small and medium‐sized inundation environmental flows remains uncertain. To assist environmental managers with the supply of inundation flows at variable times, it has been suggested that allocation trade be incorporated into efforts aimed at securing water. This paper provides some qualitative and quantitative perspective on what influences southern Murray–Darling Basin irrigators to trade allocation water at specific times across and within seasons using a market transaction framework. The results suggest that while irrigators now have access to greater risk‐management options, environmental managers should consider the possible impact of institutional change before intervening in traditional market activity. The findings may help improve the design of intervention strategies to minimise possible market intervention impacts and strategic behaviour.  相似文献   

10.
How much might the potential economic benefit from enhanced farm productivity associated with crop biotechnology adoption by Australia and New Zealand (ANZ) be offset by a loss of market access abroad for crops that may contain genetically modified (GM) organisms? This paper uses the Global Trade Analysis Project (GTAP) model to estimate effects of other countries' GM policies without and with ANZ farmers adopting GM varieties of various grains and oilseeds. The gross economic benefits to ANZ from adopting GM crops under a variety of scenarios could be positive even if the strict controls on imports from GM‐adopting countries by the European Union are maintained, but not if North‐East Asia also applied such trade restaints. From those gross economic effects would need to be subtracted society's evaluation of any new food safety concerns and negative environmental externalities (net of any new environmental and occupational health benefits), as well as any extra costs of segregation, identity preservation and consumer search.  相似文献   

11.
The peri-urban fringes of large metropolitan areas of Australia continue to experience major changes as natural and semi-natural landscapes are converted to built-up areas largely through increased residential development. These irreversible conversions are producing significant challenges for ecological and environmental protection. Yet, there has been little attempt to systematically analyse and model some of the key spatial features of these peri-urban fringes, especially in terms of examining factors underpinning new residential development. This paper attempts to fill this information gap using Adelaide, South Australia, as an exploratory case study. Using parcel-level data, we quantified spatial patterns of residential development during four consecutive periods (ten-year intervals between 1971 and 2010), revealing a gradual slow-down in the rate of new housing development after the 1980s. The effects of major roads and services, residents’ attraction to areas of high natural amenity, and previous residential development were estimated using logistic regression models and geographically weighted logistic regression models, respectively. Variation partitioning was used to examine the relative importance of three groups of predictors of residential development. Roads and services had the greatest impact on the pattern of residential development in the 1970s, while previous residential development ranked first among the three groups of forces in the last three time-periods. Influences relating to the attraction of natural amenities were of the least importance to peri-urban residential development during all four periods. These findings can help understand change mechanisms within peri-urban fringes and to develop corresponding policy responses to improve their management.  相似文献   

12.
This study uses a dynamic multi‐regional Computable General Equilibrium model of the Australian economy to examine the impacts of developing irrigated agriculture in remote North West Queensland. A potential investment and operational scenario is implemented using three alternative forecast baselines. In the first run using a business‐as‐usual baseline, there is a welfare loss from irrigation development, even with an optimistic shift in farm productivity and factor endowments in North West Queensland. In the second run, baseline demand for Australia's exports is assumed to grow at a faster rate and there is a small welfare gain. Simulating climate change impacts on crop yields, the forecast baseline of the third run includes a gradual reduction in farmland productivity in southern Australia. The simulations show the impacts of both supply and demand shifts on the welfare outcome, but on balance, clear welfare gains do not arise from the potential irrigation development.  相似文献   

13.
ABSTRACT

How do remittances affect the choice of exchange rate regimes? Previous research shows that remittances, by easing the ‘impossible trinity’, increase the probability of governments adopting fixed exchange rates. However, that research overlooks the conditioning effect of monetary and political institutions. We argue that remittances, by altering recipient governments’ incentives to use monetary policy counter-cyclically, make central bank independence a credible anti-inflationary tool in less credible regimes; that is, autocracies. Thus, autocracies that receive remittances do not need to rely on fixed exchange rates. In this way, remittances open policy alternatives for developing autocracies. Statistical tests on a sample of 87 developing and transitional countries between 1980 and 2010 support our argument.  相似文献   

14.
《Land use policy》1986,3(1):21-30
Agriculture and upland afforestation have caused major changes to the landscapes of the UK as well as severe damage to nature conservation interests since the second world war. The major task now is to secure greater influence over the activities of farmers and foresters. This article reviews the calls that have been made over the last 25 years by national environmental bodies for the extension of planning controls to agricultural operations and to afforestation. The advocacy of controls is now a party political issue and the implications of this are considered.  相似文献   

15.
This paper uses suburb‐level quarterly data to model residential water demand in Brisbane, Australia, from 1998 to 2003. In this system, residential consumption is charged using a fixed annual service fee with no water entitlement followed by a fixed volumetric charge per kilolitre. Water demand is specified as average quarterly household water consumption and the demand characteristics include the marginal price of water, household income and size, and the number of rainy and warm days. The findings not only confirm residential water as price and income inelastic, but also that the price and income elasticity of demand in owner‐occupied households is higher than in rented households. The results also show that weather, particularly summer months and the number of rainy days, exerts a strong influence on residential water consumption.  相似文献   

16.
The nature of the seasonal water market is examined using a theoretical model and empirical evidence from the Victorian market. Drivers of the seasonal opportunity cost of water include the underlying nature of investment in the industry made in the context of risky entitlement yields; and the timing and nature of information regarding seasonal water availability and rainfall. Seasonal water markets facilitate the re‐allocation of water availability according to this short‐run opportunity cost. Evidence from the market suggests that transactions costs are low and most of the existing constraints to trade in seasonal allocations are the result of hydrological conditions. Analysis of market data suggests that the price response of the market to water availability is much more pronounced in years of low rainfall. The implications of the paper for wider policy reform are that attention should be paid to improving property rights for the management of intertemporal risk before other reforms, such as broadening of permanent water markets and institutionalising environmental flows, are implemented. This is because these other reforms will change the spatial and temporal pattern of water use and thus affect reliability, which underpins the value of water in irrigated agriculture.  相似文献   

17.
‘Clean and green’ has been used as a marketing tool by Australian governments to promote agricultural products overseas. But how valid are these claims? Is the ‘clean and green’ image campaign effective? And should government be involved? We conclude that Australia may have had a ‘clean and green’ image in some markets, but in the future, concrete proof of environmental and quality credentials will be required to satisfy increasingly better‐informed and more demanding customers. We argue that governments cannot, and should not, continue to promote Australian products based on an undefined ‘clean and green’ image. Rather, more resources should be directed to the development, promotion and wide adoption of integrated, credible and well‐defined environmental management and quality assurance systems if Australia is to compete effectively in export markets, especially in the longer term.  相似文献   

18.
Urban development in China is based on two types of land ownership, namely, state land owned by states and collective land owned by village collectives. Legally speaking, urban development must be based on state land. In practice, informal development based on collective land has played important roles in the rapid urbanization process over the past decades. Nonetheless, the vague property rights over collective land have led to inferior and suboptimal development outcomes in expansive urban areas. The redevelopment of collective land has become an important means to sustain urban development in an ongoing urbanization process. By adopting theoretical perspectives from New Institutional Economics, this study presents an integrated conceptual framework on the institutional arrangements of land property rights and transaction costs to understand the changes in land policies and their institutional implications for the redevelopment of collective land in Shenzhen, China. The findings reveal that the new policies have redefined the relationship among the government, village collectives, and real estate developers as well as their property rights over collective land. The change of institutional arrangements in land property rights has significantly reduced the transaction costs in the redevelopment process and effectively promoted land redevelopment activities.  相似文献   

19.
The significance of informal land registration in property transactions and development has been discussed at length, but there are few examples of in-depth case studies of how this information accessing and collection institution relates to them and how it may create property rights. This paper examines the nature and operation of non-governmental and voluntary land transaction registration practices in Kowloon Walled City, an ideal example of a privately-planned and developed habitat under unclear property rights due to jurisdictional disputes between China and Britain and no state protection of property rights or intervention in building control existed. Based on documentary evidence interpreted from a Coasian and Hayekian stance, it advances the proposition that the contracts the Kowloon Walled City Kaifong Welfare Promotion Association (hereafter the Kaifong Association) sought to represent as a witness built up its political credibility as a representative body. Such a role not only reduced transaction costs of contract enforcement and, hence, facilitated redevelopment, but also became that of a quasi-government land registrar due to the popularity of its witnessing service, which, under specific circumstances, served as the basis for the assignment of de jure private property rights by the state.  相似文献   

20.
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