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  • Articles  (10)
  • Biodiversity Conservation  (10)
  • 2010-2014  (10)
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (10)
  • 1
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    Estimating Endangered Species Interaction Risk With the Kalman Filter (2014)
    Oxford University Press
    Details
    Publication Date: 2014-03-21
    Description: To address the tradeoff between biodiversity conservation in marine ecosystems and fishing opportunity, it is important to quantify the risk of endangered species interactions in commercial fisheries. We propose a Kalman filter suitable for rare events to estimate the endangered leatherback turtle take risk in the California drift gillnet fishery in the years 1990–2010, conditional on spatiotemporal factors that affect take rates. Results suggest interaction risk has remained stable, but with substantial variation over the spatiotemporal distribution of effort. Our methods might also apply to recreation demand analysis with rare event risk, or to applications involving irregularly spaced observations, like trade-level stock market data.
    Keywords: Q22 - Fishery ; Aquaculture, Q57 - Ecological Economics: Ecosystem Services ; Biodiversity Conservation ; Bioeconomics, Q58 - Government Policy
    Print ISSN: 0002-9092
    Electronic ISSN: 1467-8276
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
    Published by Oxford University Press
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  • 2
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    Crying Wolf? A Spatial Analysis of Wolf Location and Depredations on Calf Weight (2014)
    Oxford University Press
    Details
    Publication Date: 2014-04-05
    Description: Combining a novel panel dataset of 18 Montana ranches with spatial data on known wolf pack locations and satellite-generated climatological data from 1995-2010, we estimate the spatial impact of changing wolf pack locations and confirmed wolf depredations on the weight of beef calves. We find no evidence that wolf packs with home ranges that overlap ranches have any detrimental effects on calf weights. Other non-wolf factors, notably climate and individual ranch-specific husbandry practices, explained the majority of the variation in the weight of calves. However, ranches that experienced a confirmed cattle depredation by wolves had a negative and statistically significant impact of approximately 22 pounds on the average calf weight across their herd, possibly due to inefficient foraging behavior or stress to mother cows. For ranches experiencing confirmed depredation, the costs of these indirect weight losses are shown to potentially be greater than the costs of direct depredation losses that have, in the past, been the only form of compensation for ranchers who have suffered wolf depredations. These results demonstrate a potentially important and understudied aspect of economic conflict arising from the protection and funding of endangered species recovery programs.
    Keywords: Q12 - Micro Analysis of Farm Firms, Farm Households, and Farm Input Markets, Q51 - Valuation of Environmental Effects, Q57 - Ecological Economics: Ecosystem Services ; Biodiversity Conservation ; Bioeconomics
    Print ISSN: 0002-9092
    Electronic ISSN: 1467-8276
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
    Published by Oxford University Press
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  • 3
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    Capitalized Costs of Habitat Conservation Easements (2014)
    Oxford University Press
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    Publication Date: 2014-04-05
    Description: Perpetual conservation easements permanently remove the option to convert existing habitat to more intensive agricultural production. If existing habitat is at threat of conversion, removing the option to convert will reduce land values. In this article, we estimate the land value discount resulting from perpetual habitat conservation easements by using propensity score matching. We find that on the average eased parcel, land values fall by approximately $86 per acre for every acre of eased habitat. On average, our results suggest that landowners have been adequately compensated and conservation agencies have successfully secured habitat at risk of conversion.
    Keywords: Q15 - Land Ownership and Tenure ; Land Reform ; Land Use ; Irrigation, Q24 - Land, Q57 - Ecological Economics: Ecosystem Services ; Biodiversity Conservation ; Bioeconomics
    Print ISSN: 0002-9092
    Electronic ISSN: 1467-8276
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
    Published by Oxford University Press
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  • 4
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    Foreclosures and Invasive Insect Spread: The Case of Asian Citrus Psyllid (2014)
    Oxford University Press
    Details
    Publication Date: 2014-04-05
    Description: Human economic activity is considered to be an important factor in exacerbating the speed of invasive species spread, but may also play an important role in preventing it. In this study, we investigate the role of home foreclosure in the spread of Asian Citrus Psyllid (ACP, Diaphorina citri Kuwayama ) throughout residential areas of Southern California. We find that foreclosures are indeed a significant factor in explaining ACP spread, even after controlling for other human and environmental effects. Our results suggest that human economic activity may be more important in controlling the spread of invasive species than previously realized, and that the external costs of the foreclosure problem may also be underestimated.
    Keywords: C23 - Models with Panel Data, Q57 - Ecological Economics: Ecosystem Services ; Biodiversity Conservation ; Bioeconomics
    Print ISSN: 0002-9092
    Electronic ISSN: 1467-8276
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
    Published by Oxford University Press
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  • 5
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    Agricultural Rodent Control Using Barn Owls: Is It Profitable? (2014)
    Oxford University Press
    Details
    Publication Date: 2014-04-05
    Description: We develop a model to evaluate the profitability of controlling rodent damage by placing barn owl nesting boxes in agricultural areas. The model incorporates the spatial patterns of barn owl predation pressure on rodents, and the impact of this predation pressure on nesting choices and agricultural output. We apply the model to data collected in Israel and find the installation of nesting boxes profitable. While this finding indicates that economic policy instruments to enhance the adoption of this biological control method are redundant, it does support stricter regulations on rodent control using rodenticides.
    Keywords: Q15 - Land Ownership and Tenure ; Land Reform ; Land Use ; Irrigation, Q18 - Agricultural Policy ; Food Policy, Q57 - Ecological Economics: Ecosystem Services ; Biodiversity Conservation ; Bioeconomics
    Print ISSN: 0002-9092
    Electronic ISSN: 1467-8276
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
    Published by Oxford University Press
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  • 6
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    Individual and Cooperative Management of Invasive Species in Human-mediated Landscapes (2014)
    Oxford University Press
    Details
    Publication Date: 2014-12-13
    Description: As a bioinvasion spreads across a landscape from its point of introduction, damages rise roughly with the square of the distance from the original invasion. It is thus generally beneficial, at the landscape scale, to apply eradication or containment controls early if not immediately upon discovery. However, an individual property owner only has incentives to consider the costs and benefits of control on his/her own property rather than potential landscape-scale damages. Bioinvasions will therefore generally be under-controlled in a landscape of independent owners operating under a laissez-faire system. A mechanism is thus needed to induce early cooperative contributions to control costs from beneficiaries who would, without them, be invaded later. We develop a spatially-explicit, integrated model of invasion spread and human behavior to examine how different degrees of spatial cooperation affect patterns of invasion spread and the total costs and damages imposed. We compare individual laissez-faire, cooperative control by adjacent neighbors, and cooperative control by groups including more distant but nearby neighbors. As expected, private laissez-faire control decisions tend to under-control the invasion relative to socially optimal control under most circumstances. But a reasonably high fraction of first best payoffs can be achieved with only a modest geographical reach of cooperation. We also find that less extensive cooperation is needed to control invasions whose costs and damages otherwise lead to the largest externalities (circumstances with costs that are relatively low compared with damages). This suggests that even small amounts of cooperation to control bioinvasions can provide large social benefits.
    Keywords: Q15 - Land Ownership and Tenure ; Land Reform ; Land Use ; Irrigation, Q24 - Land, Q57 - Ecological Economics: Ecosystem Services ; Biodiversity Conservation ; Bioeconomics
    Print ISSN: 0002-9092
    Electronic ISSN: 1467-8276
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
    Published by Oxford University Press
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  • 7
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    Capitalized Amenity Value of Native Vegetation in a Multifunctional Rural Landscape (2014)
    Oxford University Press
    Details
    Publication Date: 2014-12-13
    Description: In many parts of the world, natural vegetation has been cleared to allow agricultural production. To ensure a long-term flow of ecosystem services without compromising agricultural activities, restoring the environment requires a balance between public and private benefits and costs. Information about private benefits generated by environmental assets can be utilized to identify conservation opportunities on private lands, evaluate environmental projects, and design effective policy instruments. We use a spatio-temporal hedonic model to estimate the private benefits of native vegetation on rural properties in the state of Victoria, Australia. Specifically, we estimate the marginal value of native vegetation on private land and examine how it varies with the extent of vegetation on a property and across a range of property types and sizes. Private benefits of native vegetation are greater per unit area on small and medium-sized properties and smaller on large production-oriented farms. Native vegetation exhibits diminishing marginal benefits as its proportion of a property increases. The current extent of native vegetation cover is lower than the extent that would maximize the amenity value to many landowners. There is scope for improved targeting of investment in the study region by incorporating private benefits of environmental projects into environmental planning processes. Landowners with high marginal private benefits from revegetation would be more willing to participate in a revegetation program. Targeting these landowners would likely provide higher value for money because such projects could be implemented at lower public cost.
    Keywords: Q15 - Land Ownership and Tenure ; Land Reform ; Land Use ; Irrigation, Q57 - Ecological Economics: Ecosystem Services ; Biodiversity Conservation ; Bioeconomics
    Print ISSN: 0002-9092
    Electronic ISSN: 1467-8276
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
    Published by Oxford University Press
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  • 8
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    LUMINATE: linking agricultural land use, local water quality and Gulf of Mexico hypoxia (2014)
    Oxford University Press
    Details
    Publication Date: 2014-07-03
    Description: In this paper, we discuss the importance of developing integrated assessment models to support the design and implementation of policies to address water quality problems associated with agricultural pollution. We describe a new modelling system, LUMINATE, which links land use decisions made at the field scale in the Upper Mississippi, Ohio and Tennessee Basins through both environmental and hydrological components to downstream water quality effects and hypoxia in the Gulf of Mexico. This modelling system can be used to analyse detailed policy scenarios identifying the costs of the policies and their resulting benefits for improved local and regional water quality. We demonstrate the model's capabilities with a simple scenario where cover crops are incentivised with green payments over a large expanse of the watershed.
    Keywords: Q51 - Valuation of Environmental Effects, Q52 - Pollution Control Costs ; Distributional Effects ; Employment Effects, Q57 - Ecological Economics: Ecosystem Services ; Biodiversity Conservation ; Bioeconomics
    Print ISSN: 0165-1587
    Electronic ISSN: 1464-3618
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
    Published by Oxford University Press
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  • 9
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    The Impact of Information Provision on Agglomeration Bonus Performance: An Experimental Study on Local Networks (2014)
    Oxford University Press
    Details
    Publication Date: 2014-07-23
    Description: The agglomeration bonus is an incentive mechanism to induce adjacent landowners to spatially coordinate their land use for the delivery of ecosystem services from farmland. This paper uses laboratory experiments to explore the performance of the agglomeration bonus in achieving the socially optimal land management configuration in a local network environment where the information available to subjects varies and the strategic setting is unfavorable for efficient coordination. The experiments indicate that if subjects are informed about both their direct and indirect neighbors’ actions, they are more likely to produce the socially optimal configuration. Thus effectiveness of the policy can be improved by implementing information dissemination exercises among landowners. However given the adverse strategic setting, increased game experience leads to coordination failure and optimal land choices only at the localized level independent of the information available to subjects. Thus success of the agglomeration bonus scheme on real landscapes will have to take account of the roles of both information and experience on participant behavior.
    Keywords: C72 - Noncooperative Games, C91 - Laboratory, Individual Behavior, C92 - Laboratory, Group Behavior, D83 - Search ; Learning ; Information and Knowledge ; Communication ; Belief, D85 - Network Formation and Analysis: Theory, Q25 - Water, Q57 - Ecological Economics: Ecosystem Services ; Biodiversity Conservation ; Bioeconomics
    Print ISSN: 0002-9092
    Electronic ISSN: 1467-8276
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
    Published by Oxford University Press
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  • 10
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    Marketed outputs and non-marketed ecosystem services: the evaluation of marginal costs (2013)
    Oxford University Press
    Details
    Publication Date: 2013-07-31
    Description: We provide a new approach for assessing the cost effectiveness of green payment schemes. We allow for complementary, supplementary and competitive relationships between agricultural production and non-marketed ecosystem services generation. Our theoretical model distinguishes three theoretical cases depending on the minimum level of the non-marketed ecosystem services. These cases are empirically investigated using a flexible transformation function and farm-level panel data from the UK. We find that the biophysical connections between the non-marketed ecosystem services and market activities have important implications for marginal costs.
    Keywords: Q18 - Agricultural Policy ; Food Policy, Q57 - Ecological Economics: Ecosystem Services ; Biodiversity Conservation ; Bioeconomics, Q58 - Government Policy
    Print ISSN: 0165-1587
    Electronic ISSN: 1464-3618
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
    Published by Oxford University Press
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