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Registros recuperados: 11
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A bioeconomic model of carbon trading within an Australian grazing enterprise AgEcon
Gowen, Rebecca; Rolfe, John; Donaghy, Peter.
The Carbon Farming Initiative (CFI) and other carbon trading programs have been promoted as alternative sources of income for agricultural producers, particularly those on marginal land. This paper presents the results of a bioeconomic model developed to compare the relative returns from a beef enterprise against changing regrowth management practices to sequester additional carbon and sell carbon offsets. The model is constructed based on a 1000 hectare parcel of land in Central Queensland and is calculated for two landtypes; Brigalow and Eucalypt. Assuming zero transaction costs and a 20 year contract period, a carbon-cattle enterprise has higher returns that a cattle-only enterprise at relatively low carbon prices for both land types. However, results...
Tipo: Presentation Palavras-chave: Carbon; Bioeconomic modelling; Grazing economics; Environmental Economics and Policy; Livestock Production/Industries.
Ano: 2012 URL: http://purl.umn.edu/124311
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Australasian environmental economics: contributions, conflicts and ‘cop-outs’ AgEcon
Bennett, Jeffrey W..
Australian and New Zealand environmental economists have played a significant role in the development of concepts and their application across three fields within their subdiscipline: non-market valuation, institutional economics and bioeconomic modelling. These contributions have been spurred on by debates within and outside the discipline. Much of the controversy has centred on the validity of valuations generated through the application of stated preference methods such as contingent valuation. Suggestions to overcome some shortcomings in the work of environmental economists include the commissioning of a sequence of non-market valuation studies to fill existing gaps to improve the potential for benefit transfer.
Tipo: Article Palavras-chave: Bioeconomic modelling; Institutional economics; Non-market valuation; Environmental Economics and Policy.
Ano: 2005 URL: http://purl.umn.edu/118501
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Bioeconomic modeling of wetlands and waterfowl in Western Canada: Accounting for amenity values AgEcon
van Kooten, G. Cornelis; Withey, Patrick; Wong, Linda.
This study extends an original bioeconomic model of optimal duck harvest and wetland retention by bringing in amenity values related to the nonmarket (in situ) benefits of waterfowl plsi the ecosystem values of wetlands themselves. The model maximizes benefits to hunters as well as the amenity values of ducks and ecosystem benefits of wetlands, subject to the population dynamics. Results indicate that wetlands and duck harvests need to be increased relative to historical levels. Further, the socially optimal ratio of duck harvest to wetlands is larger than what has been observed historically. Including amenity values leads to a significant increase in the quantity of wetlands and duck harvests relative to models that focus only on hunting values.
Tipo: Conference Paper or Presentation Palavras-chave: Bioeconomic modelling; Wetland protection; Wildlife management; Nonmarket values; Prairie pothole region; Environmental Economics and Policy; Q57; C61; Q25.
Ano: 2010 URL: http://purl.umn.edu/61308
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Bioeconomic modeling of wetlands and waterfowl in Western Canada: Accounting for amenity values AgEcon
van Kooten, G. Cornelis; Withey, Patrick; Wong, Linda.
This study extends an original bioeconomic model of optimal duck harvest and wetland retention by bringing in amenity values related to the nonmarket (in situ) benefits of waterfowl plsi the ecosystem values of wetlands themselves. The model maximizes benefits to hunters as well as the amenity values of ducks and ecosystem benefits of wetlands, subject to the population dynamics. Results indicate that wetlands and duck harvests need to be increased relative to historical levels. Further, the socially optimal ratio of duck harvest to wetlands is larger than what has been observed historically. Including amenity values leads to a significant increase in the quantity of wetlands and duck harvests relative to models that focus only on hunting values.
Tipo: Working or Discussion Paper Palavras-chave: Bioeconomic modelling; Wetland protection; Wildlife management; Nonmarket values; Prairie pothole region; Environmental Economics and Policy; Q57; C61; Q25.
Ano: 2010 URL: http://purl.umn.edu/94936
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Bioeconomic modelling of English Channel fisheries and their technical interactions : presentation of the simulation model BECHAMEL (BioEconomic CHAnnel ModEL) ArchiMer
Ulrich, Clara; Le Gallic, Bertrand; Dunn, Matthew R..
This paper presents the structure and examples of results from a bioeconomic model that stimulates the fisheries of the English Channel. The main purpose of the model is to study the consequences of various management alternatives on the economic situation of UK, French and Belgian fleets fishing in the area, and on exploited resources. Considering the large number of technical interactions, the whole Channel may be regarded as one large multi-country, multi-gear and multi-species fishery. The model describes this feature through the link between three entities : fleets, "métiers", and species caught. The empirical basis of the model is composed of UK, French and Belgian data concerning stocks, fleets and landings, and two economic sample surveys of UK and...
Tipo: Text Palavras-chave: Bioeconomic modelling; English Channel fisheries; Multi species; Multifleet; Simulation.
Ano: 1999 URL: https://archimer.ifremer.fr/doc/00502/61353/64971.pdf
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Economics of Smallholder Rubber Production in Northern Laos AgEcon
Manivong, Vongpaphane; Cramb, Rob A..
In response to demand from China, rubber smallholdings are being established by shifting cultivators in Northern Laos, encouraged by government land-use policy. We examine the economics of smallholder rubber production in an established rubbergrowing village and model the likely expansion of smallholder rubber in Northern Laos. Data were obtained from key informants, group interviews, direct observation, and a farm-household survey. Latex yields were estimated using the Bioeconomic Rubber Agroforestry Support System (BRASS). A financial model was developed to estimate the net present value for a representative rubber smallholding. This model was then combined with spatial data in a Geographical Information System (GIS) to predict the likely expansion of...
Tipo: Conference Paper or Presentation Palavras-chave: Smallholder rubber; Laos; Commercialisation; Bioeconomic modelling; Land-use change; Crop Production/Industries.
Ano: 2007 URL: http://purl.umn.edu/10380
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IMPACT ASSESSMENT OF THE 2003 CAP REFORM AND THE NITRATE DIRECTIVE ON THE ARABLE FARMING SYSTEM IN THE MIDI-PYRÉNÉES REGION: BIO-ECONOMIC MODELING AT FIELD, FARM AND REGIONAL LEVELS AgEcon
Louhichi, Kamel; Belhouchette, Hatem; Wery, Jacques; Therond, Olivier; Flichman, Guillermo.
This paper analyses the impact of the 2003 CAP reform (the so-called Fischler Reform) and its interaction with the Nitrate Directive on the sustainability of selected arable farming systems in a French region (Midi-Pyrénées). The Nitrate Directive is one of the oldest EU environmental programs designed to reduce water pollution by nitrate from agricultural sources, through a set of measures, defined at regional level, and mandatory for farmers of vulnerable zones. This impact analysis is performed through a bio-economic modelling framework coupling the crop model CropSyst and the farm-based model FSSIM developed, within the EU FP6 SEAMLESS project (Van Ittersum et al., 2008). The 2003 CAP reform was compared first to the continuation of Agenda 2000...
Tipo: Conference Paper or Presentation Palavras-chave: Integrated assessment; Agricultural Policy; Nitrate Directive; Bioeconomic modelling; Multi-scale analysis.; Agricultural and Food Policy; Environmental Economics and Policy; Research Methods/ Statistical Methods; Q18; Q52; Q58.
Ano: 2008 URL: http://purl.umn.edu/44826
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Rent-Maximization versus Competition in the Western and Central Pacific Tuna Fishery AgEcon
Hannesson, Rognvaldur; Kennedy, John O.S..
Where a fish stock straddles or migrates between country A's exclusive economic zone (EEZ) and country B's EEZ, or the high seas, vesting ownership rights in the stock with A does not ensure efficient harvesting of the stock. This problem arises in the case of migratory tuna stocks in the Western and Central Pacific Ocean (WCPO). Four species of tuna reside for only part of the year in the EEZs of coastal states, many of which are Pacific Island Countries (PICs). Most of the harvesting of the stocks is carried out by distant water fishing nations such as the USA, Japan, Taiwan, China and Korea. Problems arise for achieving efficiency and equity in the harvesting of the stocks by disparate countries. The problems are made more difficult by changes in the...
Tipo: Conference Paper or Presentation Palavras-chave: Bioeconomic modelling; Game theory; Optimisation; Migratory tuna; Resource /Energy Economics and Policy.
Ano: 2007 URL: http://purl.umn.edu/9458
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Sustainability, Externalities and Economics: The Case of Temperate Perennial Grazing Systems in NSW AgEcon
Jones, Randall E.; Dowling, Peter.
The replacement of perennial grass species by undesirable annual grass weeds not only results in lower productivity but is also contributes to a range of external costs. In particular, shallow rooted annuals result in greater deep drainage and therefore a greater potential for salinity, and greater volumes of runoff of poor quality water to streams. In this paper an economic framework for examining the sustainability issues of a perennial grazing system on the NSW Central Tablelands is presented. This involves a combination of simulation and dynamic programming models, with the state of the system represented by variables for the perennial grass composition and soil fertility. The paper examines a range of management strategies that increase the perennial...
Tipo: Report Palavras-chave: Perennial pasture; Sustainability; Externalities; Bioeconomic modelling; Dynamic programming; Research and Development/Tech Change/Emerging Technologies; 160.
Ano: 2004 URL: http://purl.umn.edu/42504
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The impact of price and yield risk on the bioeconomics of reservoir aquaculture in north Vietnam AgEcon
Petersen, Elizabeth H.; Hertzler, Greg; Schilizzi, Steven.
A bioeconomic model of reservoir aquaculture in northern Vietnam is used to investigate the impacts of price and yield risk on the level, variability and skewness of expected net revenue and utility. Prices and yields are assumed to follow lognormal and beta distributions, respectively. Net revenue follows a generalized gamma distribution and is found to be very risky compared with similar enterprises elsewhere, mainly due to the relatively high yield risk. This represents the nascent nature of the industry in Vietnam and the opportunity for efficiency improvements. Increasing production capacity (through increasing reservoir size, stocking density, production cycle length and harvest rate) are found to increase profits and decrease the variability of...
Tipo: Conference Paper or Presentation Palavras-chave: Bioeconomic modelling; Price risk; Yield risk; Aquaculture; Vietnam; Resource /Energy Economics and Policy.
Ano: 2007 URL: http://purl.umn.edu/10422
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Unravelling the economic and environmental tradeoffs of reducing sediment movement from grazed pastures AgEcon
Donaghy, Peter; Rolfe, John; Gaffney, James.
An undesirable consequence of grazing activities in eastern Australia is the quantity of sediment emptying into the Great Barrier Reef Lagoon. One of the challenges to reducing sediment loads stems from the lack of private incentives to improve land management practices. There is also a poor understanding of the financial implications resulting from the adoption of sustainable management practices, and, in particular the lack of scientific and economic knowledge linking on-farm management actions to catchment scale impacts. Bio-economic modelling has been used to identify the economic and environmental trade-offs encountered when grazing strategies are altered to reduce off-farm sediment movement from a black spear grass pasture in central Queensland.
Tipo: Conference Paper or Presentation Palavras-chave: Bioeconomic modelling; Grazing; Economic and environmental; Environmental Economics and Policy.
Ano: 2007 URL: http://purl.umn.edu/10417
Registros recuperados: 11
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