SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Kapfer, Martin; Hübner, Rico; Eckstein, Karin; Ziesel, Sigrid; Kantelhardt, Jochen.

According to the concept of ecosystem services, agriculture not only provides commodities but also cultural and regulating services. While it is easy to value commodity production by market prices, the valuation of cultural and regulating services is complex because of their public good character. Non-parametric approaches such as the Data Envelopment Analysis (DEA) allow for estimating the contribution of agriculture to such services. However, it is not enough to know the extent of ecosystem services provided; it is also necessary to be aware of which farmers provide these services and where they are provided. In this paper, we suggest a plot-specific approach combining GIS analysis and DEA models. This allows a spatially explicit assessment of...

Assessment of Farmer Preferences for Cattle Traits in Cattle Production Systems of Kenya

Palavras-chave: Agricultural land use; Data envelopment; Environment-oriented technical efficiency; Landscape-appearance-oriented technical efficiency; Land Economics/Use; Q12; Q26; Q57.

Ano: 2011

URL: http://purl.umn.edu/108954

Ouma, Emily Awuor; Abdulai, Awudu; Drucker, Adam G..

The urgent need to improve livestock productivity in sub-Saharan Africa in order to keep pace with expected increases in demand for meat and milk is very topical. Breed improvement provides key entry points for increasing productivity in cattle populations. However, there are tendencies for breed improvement programs to focus on single, market driven traits such as milk or meat production in isolation of environmental constraints and broader livestock system functions which cattle assume in developing countries. This potentially leads to genotypes that are not well adapted to the environment and not capable of performing the multiple roles that cattle assume in cattle production systems of developing countries. In developing countries, many important...

MONITORING CHOICE TASK ATTRIBUTE ATTENDANCE IN NON-MARKET VALUATION OF MULTIPLE PARK MANAGEMENT SERVICES: DOES IT MATTER?

Palavras-chave: Cattle production system; Trait preferences; Choice experiment; Kenya; Livestock Production/Industries; D11; C35; Q26.

Ano: 2005

URL: http://purl.umn.edu/24730

Scarpa, Riccardo; Thiene, Mara; Hensher, David A..

Land management in Alpine Parks provides multifunctional services to separate groups of users. Choice experiments can be used to derive estimates of value for different management attributes. However, little research has been conducted on how frequently respondents ignore attributes used to describe policy management scenarios. We fill this gap using an approach that identifies and compares both serial and choice-task attribute non-attendance addressing five different visitor types. Our results indicate that accounting for choice-task non-attendance significantly improves model fit and yield estimates of marginal WTP with a more plausible pattern of signs and greater efficiency.

One-and-One-Half Bound Dichotomous Choice Contingent Valuation

Palavras-chave: Multifunctional land management; Nonmarket valuation; Choice experiments; Preference heterogeneity; Random utility model; Attribute processing rules.; Environmental Economics and Policy; Land Economics/Use; Resource /Energy Economics and Policy; C25; H41; Q26; Q51.

Ano: 2009

URL: http://purl.umn.edu/50830

Cooper, Joseph C.; Hanemann, W. Michael; Signorello, Giovanni.

To reduce the potential for response bias on the follow-up bid in multiple-bound discrete choice CVM questions while maintaining much of the efficiency gains of the multiple-bound approach, we introduce the one-and-one-half-bound (OOHB) approach. Despite the fact that the OOHB model uses less information than the double-bound (DB) approach, efficiency gains in moving from single-bound to OOHB capture a large portion of the gain associated with moving from single-bound to DB. In an analysis of survey data, our OOHB estimates demonstrated higher consistency with respect to the follow-up data than the DB estimates and were more efficient as well.

Carbon Sequestration with Reforestations and Biodiversity-Scenic Values

Palavras-chave: Resource /Energy Economics and Policy; Q20; Q26; C15; C25.

Ano: 2001

URL: http://purl.umn.edu/25003

Caparros, Alejandro; Cerda, Emilio; Ovando, P.; Campos, Pablo.

This paper presents an optimal control model to analyze reforestations with two different species, including commercial values, carbon sequestration and biodiversity or scenic values. We solve the model qualitatively with general functions and discuss the implications of partial or total internalization of environmental values, showing that internalizing only carbon sequestration may have negative impacts on biodiversity-scenic values. To evaluate the practical relevance, we compare reforestations in the South-west of Spain with cork-oaks (a slow growing native species) and with eucalyptus (a fast growing alien species). We do the analysis with two different carbon crediting methods: the Carbon Flow Method and the Ton Year Accounting Method. With the...

The Supply of Private Acreage for Public Recreational Use in Southern and Central Appalachia

Palavras-chave: Optimal Control; Forests; Carbon; Sequestration; Biodiversity; Scenic; Stated Preferences; Carbon Accounting; Environmental Economics and Policy; Q23; Q26; Q51; Q57.

Ano: 2007

URL: http://purl.umn.edu/9323

Liu, Zheng; Pagoulatos, Angelos; Hu, Wuyang; Fleming, Ronald A..

Public lands in Southern and Central Appalachia (SCA) available for outdoor recreational pursuits are limited relative to the rest of the county. This study identifies factors that encourage private land owners to permit public access to their land for recreational purposes and determines how much acreage would be offered in the Southern and Central Appalachia region. The Tobit and Heckman’s sample selection models suggest that the probability of offering land to the public is correlated with the number of acres offered. Having acreage suited for recreation is a positive determinant of acres leased but attributes developed by the landowner act as a disincentive. Type of recreational activity has no effect on the landowner’s decision and the supply of...

An Economic Assessment of the Amenity Benefits Associated with Alternative Coastal Protection Options

Palavras-chave: Private land lease; Recreational activities; Tobit model; Heckman’s sample selection model; Public recreational use; Environmental Economics and Policy; Land Economics/Use; Resource /Energy Economics and Policy; Q24; Q26.

Ano: 2010

URL: http://purl.umn.edu/61315

Christie, Mike; Colman, Oliver.

Current government guidelines for the appraisal of coastal defence projects in the UK do not require that non-market amenity benefits to be considered . However, a new option in coastal defence, namely multi-purpose reefs, provides an opportunity to integrate coastal defence with significant amenity provision. This paper reports the findings of a choice experiment study that evaluated the amenity benefits of four alternative coastal defence systems currently being considered for Borth in west Wales. The results indicate that traditional coastal defence options such as timber and rock groynes do not generate amenity benefits, while a multipurpose reef would generate significant benefits in terms of improvements in the visual appeal of the beach, safer...

Evidence on the Amenity Value of Wetlands in a Rural Setting

Palavras-chave: Choice experiments; Amenity value; Coastal defence; Multi-purpose reef; Resource /Energy Economics and Policy; Q26; Q51; Q58.

Ano: 2006

URL: http://purl.umn.edu/25541

Bin, Okmyung; Polasky, Stephen.

This study uses a hedonic property price method to estimate how wetlands affect residential property values in a rural area. The study utilizes wetland inventory data coupled with extensive property sales records between January 2000 and September 2004 from Carteret County, NC. Our results indicate that i) a higher wetland percentage within a quarter mile of a property, ii) closer proximity to the nearest wetland, and iii) larger size of the nearest wetland are associated with lower residential property values. These results contrast with previous hedonic studies that use data from urban areas, which found positive associations between wetland and property values. The amenity value of wetlands appears to depend at least as much on the characteristics of...

Tipo: Journal Article

Palavras-chave: Hedonic prices; Housing market; Rural area; Wetlands; D12; Q24; Q26; R21.

Ano: 2005

URL: http://purl.umn.edu/42789

Effects of Great Barrier Reef Degradation on Recreational Demand: A Contingent Behaviour Approach

Kragt, Marit Ellen; Roebeling, Peter C.; Ruijs, Arjan.

Agricultural run-off from the Great Barrier Reef catchment area may cause degradation of coral reefs, affecting the tourism sector that relies on healthy reefs for its income generation. A Contingent Behaviour approach is used to determine the effect of reef degradation on demand for recreational dive and snorkel trips, for a case study of the Great Barrier Reef (GBR) in Australia. We assessed how reef degradation affects GBR tourism and to what extent reef-trip demand depends on the visitors' socio-economic characteristics. A count data model is developed, and results indicate that an average visitor would undertake about 60% less trips to the GBR per year, given a combined 80%, 30% and 70% decrease in coral cover, coral diversity and fish diversity,...

Are Agricultural Measures for Groundwater Protection Beneficial When Compared to Purification of Polluted Groundwater?

Palavras-chave: Coral reef; Recreation; Contingent Behaviour model; Count data models; Resource /Energy Economics and Policy; Q26; Q51; Q57.

Ano: 2006

URL: http://purl.umn.edu/25753

Hasler, Berit; Lundhede, Thomas.

The groundwater resource, the drinking water areas and the surface water quality can be protected by measures, e.g. by reductions of pesticide and nutrient applications, conversion of arable land to grasslands or forests etc. The objective of the paper is to estimate the benefits of groundwater protection by the valuation method choice experiments. This method allows for separate estimation and comparison of the different attributes connected to groundwater protection i.e. the effects on drinking water and surface water quality as compared to the benefits from cleaning and treatment of polluted drinking water to make it suitable for drinking water consumption. The results indicate that the benefits are significant, and that the willingness to pay for...

A Dynamic Bioeconomic Model of Ivory Trade: Details and Extended Results

Palavras-chave: Groundwater; Pollution; Drinking water; Valuation; Choice experiments; Environmental Economics and Policy; Resource /Energy Economics and Policy; Q25; Q26; Q28; C42; D62.

Ano: 2005

URL: http://purl.umn.edu/24587

van Kooten, G. Cornelis.

Trade in ivory is banned under CITES in an effort to protect the African elephant. The trade ban is supported by some range states, most notably Kenya, because they see the ban as an effective means for protecting a ‘flagship’ species, one that attracts tourists and foreign aid. It is opposed by some states, mainly in southern Africa, because their elephant populations are exceeding the capacity of local ecosystems with culling and other sources have resulted in the accumulation of large stocks of ivory. They argue that ivory trade will benefit elephant populations. The question of whether an ivory trade ban will protect elephant populations is addressed in this paper using a dynamic partial-equilibrium model that consists of four ivory exporting regions...

Estimating the Value of Invasive Aquatic Plant Control: A Bioeconomic Analysis of 13 Public Lakes in Florida

Palavras-chave: Economics of elephant conservation; Economics of ivory trade; Trade bans; Cartels and quota; International Relations/Trade; F10; O55; Q26; Q27.

Ano: 2006

URL: http://purl.umn.edu/37030

Adams, Damian C.; Lee, Donna J..

We present a bioeconomic model of three invasive aquatic plants (hydrilla, water hyacinth, and water lettuce) in 13 large Florida lakes, and simulate one-year and steady-state impacts of three control scenarios. We estimate that the steady-state annual net benefit of invasive plant control is $59.95 million. A one-year increase in control yields steady-state gains of $6.55 million per year, and a one-year lapse causes steady-state annual losses of $18.71 million. This model shows that increased control of hydrilla, water hyacinth, and water lettuce is optimal.

Tipo: Journal Article

Palavras-chave: Aquatic plants; Bioeconomics; Invasive species; Lakes; Maintenance control; Q57; Q26; Q28; Q51; Q25.

Ano: 2007

URL: http://purl.umn.edu/37139

The Structure of Rural Landscape in Monetary Evaluation Studies: Main Analytical Approaches in Literature

Idda, Lorenzo; Benedetto, Graziella; Madau, Fabio A.; Orru, Elia; Pulina, Pietro.

Over recent years considerable research has been devoted to the assessment of the rural landscape value. These studies have concerned both use and non-use value estimation. An important issue in monetary evaluations is about taking (or not) into account the structural complexity of landscape. Three analytical approaches may be recognized on the basis of whether landscape structural attributes are involved (global, mono-attribute and multi-attribute approach). The present work is part of a research aimed to seek out rational instruments for guidance policies on rural landscape. It consists in a survey of the main studies appeared in literature. The specific purpose is to classify these empirical analyses in accordance both to the approaches mentioned above...

Private Options to Use Public Goods: Exploiting Revealed Preferences to Estimate Environmental Benefits

Palavras-chave: Rural landscape; Structural attributes; Landscape demand; Contingent valuation models; Choice experiment; Land Economics/Use; Q26.

Ano: 2005

URL: http://purl.umn.edu/24549

Snyder, Lori D.; Stavins, Robert N.; Wagner, Alexander F..

We develop and apply a new method for estimating the economic benefits of an environmental amenity. The method fits within the household production framework (Becker 1965), and is based upon the notion of estimating the derived demand for a privately traded option to utilize a freely-available public good. In particular, the demand for state fishing licenses is used to infer the benefits of recreational fishing. Using panel data on state fishing license sales and prices for the continental United States over a fifteen-year period, combined with data on substitute prices and demographic variables, a license demand function is estimated with instrumental variable procedures to allow for the potential endogeneity of administered prices. The econometric...

Educational Function of Agriculture and Farm Diversification: Evidence from Dairy Farming Experience Services in Japan

Palavras-chave: Environmental Economics and Policy; Q26; Q21; Q22; H41.

Ano: 2003

URL: http://purl.umn.edu/10908

Ohe, Yasuo.

To promote multifunctional activity, it is crucial to clarify how jointness is formed in connection with farm structure. This paper examines the relationship between multifunctional activity and farm structure by focusing on the educational function of dairy farming, i.e., farming experience services, in Japan. The main findings were as follows. First, from our conceptual consideration we can say that the educational function is determined by technical and institutional jointness and there is a U-shaped relationship between farm diversification and provision of farming experience services. In addition, the national program aimed at promoting this educational function was effective in enhancing this function. Second, however, from the empirical evaluation...

Testing Construct Validity of River Recreation Use Values: A Comparison of Direct Elicitation of Use Values to Use Values Inferred Indirectly from WTP for Total Economic Value

Palavras-chave: Multifunctionality; Educational function; Farm diversification; Environmental Economics and Policy; Farm Management; Livestock Production/Industries; Q12; Q26; Q57; C24.

Ano: 2009

URL: http://purl.umn.edu/51557

Loomis, John B..

Instream Flow, Colorado

Heterogeneity among agent types and second-best management for non-market ecological services

Palavras-chave: Contingent valuation; Instream flow; Recreation benefits; Total economic value; Colorado; Environmental Economics and Policy; Public Economics; Resource /Energy Economics and Policy; Q26; Q51; Q25.

Ano: 2010

URL: http://purl.umn.edu/60410

Fenichel, Eli P..

Second-best management affects different agent types differently, and heterogeneity among agents may create instances when only second best management is feasible. Capital-theoretic bioeconomic modeling often has imposed representative agent assumptions that may not capture this heterogeneity. Interactions between agent heterogeneity and second-best management have received little attention. Such heterogeneity is particularly important when management actions do not directly affect extensive margin decisions. We employ a microparameter model in a dynamic bioeconomic model to incorporate agent heterogeneity and intensive and extensive margin decisions for a nonmarket good, recreational fishing. The model yields qualitatively different management...

What is the Value of Hazardous Weather Forecasts? Evidence from a Survey of Backcountry Skiers

Palavras-chave: Entry-exit; Microparameter; Bioeconomics; Recreational fishing; Landing limits; Optimal control; Resource /Energy Economics and Policy; Q20; Q22; Q26.

Ano: 2009

URL: http://purl.umn.edu/48995

Alberini, Anna; Rheinberger, Christoph M.; Leiter, Andrea M.; McCormick, Charles A.; Mizrahi, Andrew.

What is the value of hazardous weather warnings? To answer this question, we focus on the avalanche bulletin for Switzerland issued by the WSL Institute for Snow and Avalanche Research (SLF). We take a survey-based, non-market valuation approach to estimating the value of hypothetical improvements in avalanche forecasting. We focus on backcountry skiers because (i) safety is arguably the most important type of benefit associated with the avalanche bulletin, (ii) they voluntarily undertake risks, and (iii) they perceive themselves and are generally perceived by others as skilled in avoiding risks. The respondents’ willingness to pay (WTP) for the improved services ranges between CHF 42 to 46, implying a mean value of statistical life (VSL) of CHF 1.75...

Incorporating Uncertainty and Cero Values into the Valuation of Protected Areas and Species

Palavras-chave: Avalanche Risk; Mortality; Value of Hazardous Weather Forecasts; Contingent Valuation; Value of a Statistical Life; Research Methods/ Statistical Methods; D81; J17; Q26.

Ano: 2010

URL: http://purl.umn.edu/92712

Hurle, Jesus Barreiro; Garcia, Jose Maria Casada; Perez y Perez, Luis.

Under the Spanish conservation law, compensation is envisaged for the damage associated with all actions that reduce the quantity or quality of protected areas and species. This paper provides a tool to evaluate the monetary equivalent of this damage. We conduct a contingent valuation exercise to estimate the existence value related to protected areas and species in Aragon. This estimate is then reconsidered including the possibility of zero bids and also the possibility of uncertain preferences for non-familiar goods. Considering these two effects, mean values are reduced significantly giving support to previous recommendations of dividing by two contingent valuation estimates from dichotomous choice question formats.

Sharing Nature's Wealth through Wildlife Tourism: Its Economic, Sustainability and Conservation Benefits

Palavras-chave: Natural heritage; Contingent valuation; Spike model; Uncertainty; Land Economics/Use; B23; C24; C42; C52; D62; Q26.

Ano: 2005

URL: http://purl.umn.edu/24745

Tisdell, Clement A..

This essay classifies different types of wildlife tourism on the basis of whether they rely on captive or non-captive wildlife and whether they involve consumptive or non-consumptive use of wildlife. It is argued that depending upon how they are managed, all these forms of wildlife tourism can be supportive of the conservation of wildlife. Different mechanisms for sharing the benefits of wildlife tourism are considered and it is argued that from several different perspectives, there can be too much or too little sharing of the economic benefits from wildlife tourism. Diverse stakeholders with an interest in wildlife tourism are identified and different ways (direct and indirect) in which they can benefit from wildlife tourism are specified. The...