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- Author:
- Knoke, Thomas; Ammer, Christian; Stimm, Bernd; Mosandl, Reinhard
- Source:
- European journal of forest research 2008 v.127 no.2 pp. 89-101
- ISSN:
- 1612-4669
- Subject:
- bioeconomic models; coniferous forests; economic valuation; economists; forest economics; forest management; issues and policy; mixed forests; mixed stands; mixing; private forestry; pure stands; risk; trees; Central European region
- Abstract:
- ... For several reasons the conversion of mono-species into mixed-species forests is presently a major concern of forest management and policy in Central Europe. Although it is possible to show a clear trend in favour of mixed-species forests, private forest owners and some forest economists have often not favoured mixed forests, assuming that they are less profitable. The trend towards mixed forests ...
- DOI:
- 10.1007/s10342-007-0186-2
- https://doi.org/10.1007/s10342-007-0186-2
- Author:
- Bell, Lindsay W.; Robertson, Michael J.; Revell, Dean K.; Lilley, Julianne M.; Moore, Andrew D.
- Source:
- Animal production science 2008 v.48 no.6-7 pp. 789-798
- ISSN:
- 0816-1089
- Subject:
- feed grains; bioeconomic models; planning; profitability; risk management; pastures; grazing; livestock; forage; seasonal variation; feed intake; animal feeding; decision making
- Abstract:
- ... Improving the feed-base to better balance livestock demands with the variation in feed supply can improve the sustainability and productivity of livestock enterprises. This paper outlines some approaches and tools that can be applied to the assessment of new feed options and/or potential changes to the feed-base in mixed farming systems. Demonstrations of strategic aspects of designing feed system ...
- DOI:
- 10.1071/EA07421
- https://doi.org/10.1071/EA07421
- Author:
- Engeman, R.M.; Duquesnel, J.A.; Cowan, E.M.; Smith, H.T.; Shwiff, S.A.; Karlin, M.
- Source:
- Journal of coastal research 2008 v.24 no.2 pp. 527-532
- ISSN:
- 1551-5036
- Subject:
- habitat destruction; estimation; bioeconomic models; contingent valuation; habitat conservation; cost benefit analysis; anthropogenic activities; ecological restoration; aquatic habitat; boats; aquatic plants; Florida
- Abstract:
- ... Seagrass bed habitat is an important biotic community in decline worldwide. Boat damage has long been recognized for its negative impacts on shallow-water seagrass beds, with those along the Florida coast particularly vulnerable in the face of a large human population possessing a large number of boats. Boat scars to seagrass beds recover slowly, resulting in new damage that often outpaces recover ...
- Handle:
- 10113/15645
- DOI:
- 10.2112/06-0703.1
- https://doi.org/10.2112/06-0703.1
4. Assessment of Economic and Water Quality Impacts of Land Use Change Using a Simple Bioeconomic Model
- Author:
- Bhattarai, Gandhi; Srivastava, Puneet; Marzen, Luke; Hite, Diane; Hatch, Upton
- Source:
- Environmental management 2008 v.42 no.1 pp. 122-131
- ISSN:
- 0364-152X
- Subject:
- bioeconomic models; costs and returns; decision support systems; farms; land use change; nitrogen; phosphorus; runoff; sediment deposition; timber production; water quality; watersheds; Alabama
- Abstract:
- ... The objective of this study is to assess the economic and water quality impact of land use change in a small watershed in the Wiregrass region of Alabama. The study compares changes in water quality and revenue from agricultural and timber production due to changes in land use between years 1992 and 2001. The study was completed in two stages. In the first stage, a biophysical model was used to es ...
- DOI:
- 10.1007/s00267-008-9111-9
- PubMed:
- 18363053
- https://doi.org/10.1007/s00267-008-9111-9
- Author:
- David Finnoff; Aaron Strong; John Tschirhart
- Source:
- American journal of agricultural economics 2008 v.90 no.4 pp. 1074-1090
- ISSN:
- 0002-9092
- Subject:
- bioeconomic models; cattle; range livestock; rangelands; invasive species; plant competition; nitrogen content; species diversity; ecological succession; stocking rate; simulation models
- Abstract:
- ... Across western North America, invasive plant species and elevated levels of nitrogen are threatening the productivity of rangelands. A bioeconomic model of stocking cattle on these rangelands is used to show that optimal stocking depends on the competition between native grasses and the invaders. However, nitrogen deposition is important in determining the ultimate rangeland species composition. E ...
- DOI:
- 10.1111/j.1467-8276.2008.01166.x
- https://doi.org/10.1111/j.1467-8276.2008.01166.x
- Author:
- Skinner, R. Howard; Corson, Michael S.; Rotz, C. Alan
- Source:
- Agricultural systems 2008 v.99 no.1 pp. 35-43
- ISSN:
- 0308-521X
- Subject:
- pastures; pasture plants; plant growth; growth models; accuracy; integrated agricultural systems; weather; farm management; soil fertility; nutrient balance; watershed hydrology; forage; crop yield; milk yield; beef cattle; farm income; economic analysis; bioeconomic models; dry matter partitioning; botanical composition; primary productivity; cell respiration; Pennsylvania
- Abstract:
- ... Two pasture growth models that shared many common features but differed in model complexity were refined for incorporation into the Integrated Farm System Model (IFSM), a whole-farm model that predicts effects of weather and management on hydrology, soil nutrient dynamics, forage and crop yields, milk or beef production, and farm economics. Major differences between models included the explicit re ...
- Handle:
- 10113/32436
- DOI:
- 10.1016/j.agsy.2008.09.005
- https://doi.org/10.1016/j.agsy.2008.09.005
- Author:
- Breukers, Annemarie; Mourits, Monique; Werf, Wopke van der; Lansink, Alfons Oude
- Source:
- Agricultural economics 2008 v.38 no.2 pp. 137-149
- ISSN:
- 0169-5150
- Subject:
- bioeconomic models; cost effectiveness; epidemiology; ex ante analysis; exports; fungal diseases of plants; issues and policy; long term effects; monitoring; potatoes; quarantine; Netherlands
- Abstract:
- ... This article describes a bio-economic model to quantify the costs and benefits of controlling plant quarantine diseases. The model integrates the epidemiology and economic consequences of a quarantine disease. It allows for ex ante evaluation of control scenarios for their cost-effectiveness, taking into account potential export losses resulting from presence of the disease. The model is applied t ...
- DOI:
- 10.1111/j.1574-0862.2007.00288.x
- https://doi.org/10.1111/j.1574-0862.2007.00288.x
- Author:
- Cembali, T.; Folwell, R.J.; Clary, C.D.; Mari, M.
- Source:
- International journal of vegetable science 2008 v.14 no.1 pp. 4-22
- ISSN:
- 1931-5260
- Subject:
- bioeconomic models; Asparagus officinalis; profitability; vegetable crops; asparagus spears; crop yield; mechanical harvesting; plant damage
- DOI:
- 10.1080/19315260801890476
- https://doi.org/10.1080/19315260801890476
- Author:
- Manivong, Vongpaphane; Cramb, R. A.
- Source:
- Agroforestry systems 2008 v.74 no.2 pp. 113-125
- ISSN:
- 0167-4366
- Subject:
- rubber; crop production; small farms; land use change; bioeconomic models; latex; yields; spatial data; rural development; rural economics; profitability; Laos
- Abstract:
- ... In Northern Laos, as elsewhere in the Southeast Asian uplands, there is an agricultural transition underway from subsistence production based on shifting cultivation to commercial production based on tree crops. 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 bio-economic ...
- DOI:
- 10.1007/s10457-008-9136-3
- https://doi.org/10.1007/s10457-008-9136-3
- Author:
- Haghdoost, Adeleh; Shadparvar, Abdol Ahad; Nasiri, Mohammad Taghi Beigi; Fayazi, Jamal
- Source:
- Small ruminant research 2008 v.80 no.1-3 pp. 91-94
- ISSN:
- 0921-4488
- Subject:
- growth traits; weight; bioeconomic models; meat production; profitability; small-scale farming; body weight; sheep; dressing percentage; economic costs; prices; reproductive traits; mortality; wool; sheep breeds; litter size; quantitative traits; Iran
- Abstract:
- ... A deterministic bio-economic model was used to estimate the economic values of different traits in Arabic sheep native to the Khuzestan province of Iran. In the studied system, variable costs accounted for about 98.5% of the total costs and among variable costs, feed costs had the highest proportion with 70.7%. Revenue sources included meat, wool, and manure, where meat was the most important one ...
- DOI:
- 10.1016/j.smallrumres.2008.08.001
- https://doi.org/10.1016/j.smallrumres.2008.08.001
- Author:
- Onwulata, Charles; Flora, Frank L.; Kramer, Wendy
- Source:
- Food technology 2008 v.62 no.11 pp. 40-47
- ISSN:
- 0015-6639
- Subject:
- input output analysis; bioeconomic models; agricultural research; globalization; costs and returns; new products; food industry; food quality; food consumption; economic impact; value added; value-added products; product development; food technology; health foods; food safety; research support
- Abstract:
- ... Innovation and R&D in the complex agriculture-food industry enhance economic competitiveness and foster new food technologies, food safety, and value-added, healthful foods. A agricultural research is expected to integrate attributes such as using modern tools to improve process and product development and delivering nutrition and health by providing probiotics and prebiotics, phytonutrients, and ...
- Handle:
- 10113/42355
- Author:
- van Ittersum, Martin K.; Ewert, Frank; Heckelei, Thomas; Wery, Jacques; Alkan Olsson, Johanna; Andersen, Erling; Bezlepkina, Irina; Brouwer, Floor; Donatelli, Marcello; Flichman, Guillermo; Olsson, Lennart; Rizzoli, Andrea E.; van der Wal, Tamme; Wien, Jan Erik; Wolf, Joost
- Source:
- Agricultural systems 2008 v.96 no.1-3 pp. 150-165
- ISSN:
- 0308-521X
- Subject:
- bioeconomic models; cropping systems; economic indicators; environmental indicators; sustainable development; European Union
- Abstract:
- ... Agricultural systems continuously evolve and are forced to change as a result of a range of global and local driving forces. Agricultural technologies and agricultural, environmental and rural development policies are increasingly designed to contribute to the sustainability of agricultural systems and to enhance contributions of agricultural systems to sustainable development at large. The effect ...
- DOI:
- 10.1016/j.agsy.2007.07.009
- https://doi.org/10.1016/j.agsy.2007.07.009
- Author:
- Horan, Richard D.; Wolf, Christopher A.; Fenichel, Eli P.; Mathews, Kenneth H. Jr.
- Source:
- Environmental and resource economics 2008 v.41 no.1 pp. 47-70
- ISSN:
- 0924-6460
- Subject:
- disease reservoirs; bioeconomic models; Odocoileus virginianus; cattle; disease control; wildlife diseases; wildlife-livestock relations; bovine tuberculosis; deer; Michigan
- Abstract:
- ... We analyze a bioeconomic model of a multiple-host disease problem involving wildlife and livestock. The social planner's choices include targeted (i.e., infectious versus healthy) livestock harvests, non-targeted wildlife harvests, environmental habitat variables, and on-farm biosecurity to prevent cross-species contacts. The model is applied to bovine tuberculosis among Michigan white-tailed deer ...
- Handle:
- 10113/20019
- DOI:
- 10.1007/s10640-007-9180-x
- https://doi.org/10.1007/s10640-007-9180-x
- Author:
- White, Crow; Kendall, Bruce E.; Gaines, Steven; Siegel, David A.; Costello, Christopher
- Source:
- Ecology letters 2008 v.11 no.4 pp. 370-379
- ISSN:
- 1461-023X
- Subject:
- bioeconomic models; economic performance; fisheries; harvesting; profits and margins
- Abstract:
- ... Some studies suggest that fishery yields can be higher with reserves than under conventional management. However, the economic performance of fisheries depends on economic profit, not fish yield. The predictions of higher yields with reserves rely on intensive fishing pressures between reserves; the exorbitant costs of harvesting low-density populations erode profits. We incorporated this effect i ...
- DOI:
- 10.1111/j.1461-0248.2007.01151.x
- PubMed:
- 18205836
- PubMed Central:
- PMC2268951
- https://doi.org/10.1111/j.1461-0248.2007.01151.x
- Author:
- Neufeldt, H.; Schafer, M.
- Source:
- Agriculture, ecosystems & environment 2008 v.123 no.4 pp. 305-316
- ISSN:
- 0167-8809
- Subject:
- regional economics; greenhouse gases; bioeconomic models; extensive farming; gas emissions; agriculture; pollution control; farm income; elevated atmospheric gases; social impact; economic impact; simulation models; stocking rate; livestock; policy analysis; environmental policy; animal feeding; nitrogen fertilizers; economic analysis; cropping systems; agricultural policy; Germany
- Abstract:
- ... Environmentally effective and economically efficient strategies and measures to reduce GHG emissions from agricultural systems could significantly contribute to GHG emission abatement. As a case study we therefore estimate the possible environmental and economic impacts of different mitigation policies (emission tax, emission cap, nitrogen tax, and livestock extensification) for typical farming sy ...
- DOI:
- 10.1016/j.agee.2007.07.008
- https://doi.org/10.1016/j.agee.2007.07.008
- Author:
- Jasieniuk Marie; Taper Mark L.; Wagner Nicole C.; Stougaard Robert N.; Brelsford Monica; Maxwell Bruce D.
- Source:
- Weed science 2008 v.56 no.4 pp. 628-636
- ISSN:
- 0043-1745
- Subject:
- estimation; crop models; bioeconomic models; barley; Avena fatua; Hordeum vulgare; equations; Bayesian theory; plant density; crop yield; integrated weed management; crop-weed competition; cost effectiveness; prediction; Montana
- Abstract:
- ... Empirical models of crop––weed competition are integral components of bioeconomic models, which depend on predictions of the impact of weeds on crop yields to make cost-effective weed management recommendations. Selection of the best empirical model for a specific crop––weed system is not straightforward, however. We used information––theoretic criteria to identify the model that best describes ba ...
- Handle:
- 10113/17442
- DOI:
- 10.1614/WS-07-177.1
- https://doi.org/10.1614/WS-07-177.1
- Author:
- Skonhoft, Anders
- Source:
- Agricultural economics 2008 v.38 no.2 pp. 193-200
- ISSN:
- 0169-5150
- Subject:
- adults; assets; bioeconomic models; capital; farmers; farming systems; grazing; income; lambs; managers; meat; slaughter; wool production
- Abstract:
- ... A model analyzing the economics of sheep farming is formulated. The basic idea is simple. Sheep are capital and they are held by farmers as long as their capital value exceeds their slaughter, or meat, value. Farmers are therefore portfolio managers aiming to find the optimal combination of different categories of animals. Yields are compared with the yields from other assets. The model is formula ...
- DOI:
- 10.1111/j.1574-0862.2007.00293.x
- https://doi.org/10.1111/j.1574-0862.2007.00293.x
- Author:
- T.J. Richards; J. Eaves; M. Manfredo; S.E. Naranjo; C.-C. Chu; T.J. Henneberry
- Source:
- American journal of agricultural economics 2008 v.90 no.4 pp. 962-978
- ISSN:
- 0002-9092
- Subject:
- temporal variation; insect growth; bioeconomic models; Bemisia tabaci; simulation models; risk management; prices; population growth; spatial variation; crop management
- Abstract:
- ... Insect derivatives represent an important innovation in specialty crop risk management. An active over‐the‐counter market in insect derivatives will require a transparent pricing method. This paper develops an econometric model of the spatio‐temporal process underlying a particular insect population and develops a pricing model based on this process. We show that insect derivatives can play an imp ...
- Handle:
- 10113/29731
- DOI:
- 10.1111/j.1467-8276.2008.01170.x
- https://doi.org/10.1111/j.1467-8276.2008.01170.x
- Author:
- Paar, Philip; Röhricht, Wieland; Schuler, Johannes
- Source:
- Journal of environmental management 2008 v.89 no.3 pp. 234-244
- ISSN:
- 0301-4797
- Subject:
- annuals; decision support systems; bioeconomic models; intercropping; profitability; farms; fallow; flowers; geographic information systems; landscaping; agricultural subsidies; soil fertility; environmental policy; computer software; biennials; land use planning; environmental protection; habitats
- DOI:
- 10.1016/j.jenvman.2006.12.047
- PubMed:
- 17767997
- https://doi.org/10.1016/j.jenvman.2006.12.047
- Author:
- Bar, D.; Tauer, L.W.; Bennett, G.; González, R.N.; Hertl, J.A.; Schulte, H.F.; Schukken, Y.H.; Welcome, F.L.; Gröhn, Y.T.
- Source:
- Agricultural systems 2008 v.99 no.1 pp. 6-12
- ISSN:
- 0308-521X
- Subject:
- dairy cows; bioeconomic models; simulation models; calibration; accuracy; vaccines; lactation; disease severity; pregnancy; milk yield; artificial insemination; bovine mastitis; culling (animals); decision making; disease incidence
- Abstract:
- ... This study discusses and demonstrates the construction and application of a specially structured dynamic programming replacement and insemination optimization and simulation model of the dairy cow that includes detailed representation of repeated episodes of clinical mastitis (CM). The application determined optimal individual cow decisions, which were then compared with mastitis culling rules of ...
- DOI:
- 10.1016/j.agsy.2008.09.001
- https://doi.org/10.1016/j.agsy.2008.09.001
- Author:
- Pluske, J.M.; Schlink, A.C.
- Source:
- Animal production science 2008 v.48 no.5 pp. 641-647
- ISSN:
- 0816-1089
- Subject:
- bioeconomic models; simulation models; profitability; food animals; feedlots; sheep; water management; input prices; water requirement; livestock prices; feed intake; water policy; drinking water; prediction; Western Australia
- Abstract:
- ... Improving water management in rural towns such as Wagin, Western Australia, will decrease infrastructure damage caused by water and salinity and produce a 'new water' resource. The aim of this paper is to predict feedlot water demand using a bioeconomic model, H₂0Sheep, to determine if using such a 'new water' resource could be a viable option for this production system. Wagin (-33.3075 S, 117.340 ...
- DOI:
- 10.1071/EA06282
- https://doi.org/10.1071/EA06282
- Author:
- Ling, S.; Milner-Gulland, E.J.
- Source:
- Journal of applied ecology 2008 v.45 no.1 pp. 63-71
- ISSN:
- 0021-8901
- Subject:
- wildlife management; wildlife; wild animals; spatial variation; spatial distribution; population density; mathematical models; bioeconomic models
- Abstract:
- ... 1. The most broadly applied generalizations of bioeconomics derive from simple, non-spatial models. We develop a simple continuous spatial model in which harvesting costs are broken down into travel costs to a location and capture costs at that location within a harvested region. 2. This is used to determine the conditions under which the spatial behaviour of harvesters is important and its implic ...
- DOI:
- 10.1111/j.1365-2664.2007.01391.x
- https://doi.org/10.1111/j.1365-2664.2007.01391.x
- Author:
- Kar, T.K.; Matsuda, H.
- Source:
- Journal of environmental management 2008 v.86 no.1 pp. 171-180
- ISSN:
- 0301-4797
- Subject:
- fisheries management; bioeconomic models; protected species; migratory behavior; habitat conservation; population growth; yields; fisheries; conservation areas
- DOI:
- 10.1016/j.jenvman.2006.12.001
- PubMed:
- 17240520
- https://doi.org/10.1016/j.jenvman.2006.12.001
- Author:
- Cook, D.C.; Matheson, A.C.
- Source:
- Australian forestry 2008 v.71 no.2 pp. 107-112
- ISSN:
- 0004-9158
- Subject:
- forest economics; geographical distribution; bioeconomic models; Monte Carlo method; invasive species; biosecurity; forest trees; Pinus radiata; fungal diseases of plants; costs and returns; stochastic processes; disease prevention; equations; Fusarium circinatum; Fusarium subglutinans; cankers (plants); forest plantations; plant protection; Australia
- DOI:
- 10.1080/00049158.2008.10676277
- https://doi.org/10.1080/00049158.2008.10676277
- Author:
- Kopke, Emma; Young, John; Kingwell, Ross
- Source:
- Agricultural systems 2008 v.96 no.1-3 pp. 85-94
- ISSN:
- 0308-521X
- Subject:
- sheep; wool; bioeconomic models; farm management; profit maximization; environmental impact; Merino; Australia
- Abstract:
- ... The implications of agricultural commodity price scenarios upon the profitability and environmental impacts of various sheep systems in a main agricultural region of southern Australia are assessed using a whole-farm bio-economic model. A range of sensitivity analyses reveals that Merino flocks that specialise in crossbred lamb production are in many situations the most profitable flocks. This fin ...
- DOI:
- 10.1016/j.agsy.2007.06.003
- https://doi.org/10.1016/j.agsy.2007.06.003