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

Jindal, Rohit.

This paper determines the demand for a forestry program amongst rural households in western Kenya. It is based on a field survey with 277 households, using a stratified random sampling approach. The study follows attribute based method to elicit farmers’ preferences. Demand is measured in terms of additional number of trees that a household is willing to plant under different price schedules, including direct economic incentive to plant new seedlings. The mean willingness to plant new trees per household increases from 44 trees when farmers have to pay 10ksh/seedling, to 244 trees when farmers receive a payment of 10ksh/seedling. The paper uses fixed effects, random effects and random effect tobit models to estimate relevant parameters. Hausman...

The Origin, Development And Structure Of Demand For Plant Genetic Resources. The Impact Of The In Trust Agreements To The CGIAR Collections Availability

Palavras-chave: Kenya; Lake Victoria; Demand; Tree seedlings; Attribute based method; Demand and Price Analysis; Resource /Energy Economics and Policy; C23; Q23; Q57.

Ano: 2008

URL: http://purl.umn.edu/6347

Caracciolo, Francesco; Gotor, Elisabetta; Holloway, Garth J.; Watts, Jamie.

The objective of this paper is to explore how the demand of germplasm held by CGIAR genebanks changed over time in order to assess the possible influence of the 1994 In Trust Agreements on germplasm demand. The proposed theoretic model motivates the realistic hypothesis that the consequences of the In-Trust Agreements lead to an enhancement of CGIAR germplasm utilization. Therefore the paper firstly examines the classical literature on biodiversity’s valuation and its recent developments and subsequently it investigates the origin of the agricultural biodiversity’s economic value, providing a basic conceptual framework to infer on factors determining the demand for germplasm. Two Bayesian estimation frameworks are applied to the IRRI accessions...

Demand-Side Factors in Optimal Land Conservation Choice

Palavras-chave: Crop genetic resources; Germplasm collection; Search theoretic framework; Count data; Changepoints; O19; Q18; Q57; C11.

Ano: 2008

URL: http://purl.umn.edu/36773

Ando, Amy Whritenour; Shah, Payal.

The dominant paradigm of conservation-reserve planning in economics is to optimize the provision of physical conservation benefits (measured in units like species protected) given a budget constraint. Large-scale biology-based priority setting implies that the value we place on biodiversity and ecosystem function is not affected by human proximity to that natural capital. There is significant evidence, however, that human willingness to pay (WTP) for conservation declines with distance (e.g. Loomis 2000) – a phenomenon we refer to as “spatial value decay”. This paper begins a new strand of the conservation planning literature that takes demand-side factors – the location of people in the landscape and the degree to which their willingness to pay for an...

Combining Supply and Demand Estimates for Ecosystem Services from Cropland

Palavras-chave: Conservation; Endangered species; Optimal reserve-site selection; Spatial; Demand-side; Environmental Economics and Policy; Resource /Energy Economics and Policy; Q24; Q57.

Ano: 2009

URL: http://purl.umn.edu/49209

Ma, Shan; Swinton, Scott M.; Lupi, Frank.

Payment-for-Ecosystem-Services (PES) programs are gaining appeal as flexible approaches to inducing the voluntary provision of ecosystem services (ES). Farmers, who manage agricultural ecosystems, provide important nonmarket ecosystem services to the public by their choice of production inputs and management practices. Although there exist various PES programs in the United States and Europe, we are aware of none that was designed based on a comprehensive understanding of the underlying supply and demand of ecosystem services. Taking advantage of unique, coupled datasets of stated preferences, this paper combines a supply-side cost function of farmers’ willingness to adopt practices that provide increased ES with a demand-side social benefit function of...

Protected areas, tourism and development of the countryside

Palavras-chave: Payment-for-Ecosystem-Services (PES); Contingent valuation; Aggregate supply and demand; Cropland; Eutrophication; Greenhouse gas; Agricultural and Food Policy; Environmental Economics and Policy; Q11; Q51; Q57; Q58.

Ano: 2011

URL: http://purl.umn.edu/103501

Zurc, Jana.

Paper replaced 11/2/10.

Differential Influence of Relative Poverty on Preferences for Ecosystem Services: Evidence from Rural Indonesia

Palavras-chave: Protected areas; Development; Tourism; Slovenia; Community/Rural/Urban Development; Q01; Q56; Q57.

Ano: 2010

URL: http://purl.umn.edu/95306

Glenk, Klaus; Barkmann, Jan; Schwarze, Stefan; Zeller, Manfred; Marggraf, Rainer.

Ecosystem services generate benefits that enter human consumption either directly or indirectly via their contribution to human production activities. In this contribution, we provide evidence that (i) the demand of peasants for ecosystem services in rural Indonesia depends on relative poverty; and that (ii) the type of reaction to poverty depends on the specific relation of the ecosystem services to peasant production and consumption. In early 2005 a representative choice experiment study was conducted in the Lore Lindu area in Central Sulawesi, Indonesia, to quantify regional economic preferences (marginal willingessto- pay: MWTP) for four different ecosystem services (n=249; rattan and water availability, shading in cacao agroforestry, population size...

Optimal Allocation of Land for Conservation: A General Equilibrium Analysis

Palavras-chave: Relative poverty; Choice experiment; Ecosystem services; Environmental valuation; Resource /Energy Economics and Policy; Q21; Q51; Q56; Q57.

Ano: 2006

URL: http://purl.umn.edu/25681

Dissanayake, Sahan T.M.; Nunez, Hector M..

This paper was replaced with a revised version on 7/26/10

Institutional Impediments to Groundwater Trading: the case of the Gnangara groundwater system of Western Australia

Palavras-chave: Conservation; General Equilibrium Modeling; Optimal Land Allocation; Conservation Tax; Environmental Economics and Policy; Land Economics/Use; Q57; C68.

Ano: 2010

URL: http://purl.umn.edu/61820

Skurray, James H.; Pandit, Ram; Pannell, David J..

The development of a market in groundwater usage rights can be inhibited by constraints arising from the institutional context. Such impediments may reduce the potential gains from trade and may generate high transaction costs for prospective traders. We analyse the regulations and policies influencing groundwater transfers in a case-study area -- the Gnangara groundwater system around Perth, Western Australia -- and identify significant impediments to a groundwater market. Property rights are found to be conditional, temporary, and vulnerable to amendment. Regulatory approval is required for all transfers. Facilitating infrastructure is lacking, and price information is unavailable. Management area boundaries reflect land ownership and use rather than...

Land Use Change and Ecosystem Valuation in North Georgia

Palavras-chave: Agricultural and Food Policy; Environmental Economics and Policy; Institutional and Behavioral Economics; Land Economics/Use; Political Economy; Public Economics; Resource /Energy Economics and Policy; Q15; Q25; Q28; Q38; Q56; Q57; Q58; D02; R52; H41; H23; H11; D23; D47; D78; H44.

Ano: 2011

URL: http://purl.umn.edu/117825

Ngugi, Daniel; Mullen, Jeffrey D.; Bergstrom, John C..

This study seeks to forecast land use change in a North Georgia ecosystem, and estimate the economic value of the ecosystem using benefit transfer techniques. We forecast land use change based on a structural time series model and a simple growth rate model. The study suggests a lower bound willingness to pay value of about USD 16,000 per year to ensure compliance with fishing and drinking water quality standards with regard to fecal coliform bacteria and dissolved oxygen. Conservation efforts are likely to cost less than the cost of defensive behavior or ecosystem restoration.

The Influence of Public Attitudes on Policies for Conserving Reptiles

Palavras-chave: Ecosystem; Economic value; North Georgia; Land use; Water quality; Structural time series; Benefit transfer; Forecasting.; Environmental Economics and Policy; Land Economics/Use; Q51; Q53; Q57.

Ano: 2009

URL: http://purl.umn.edu/46853

Tisdell, Clement A..

General factors are outlined that may influence the support of members of the public for the conservation of different species of reptiles. Survey results are then summarised of the variations in the likeability of different species of reptiles as well as whether or not their survival is supported by those surveyed. The relationship between these two factors is outlined and its consequences for the survival of reptile species compared to birds and mammals is specified, assuming a decision situation like that depicted by the Noah’s Ark problem. Furthermore, the extent to which the results support the similarity principle are considered. A substantial dichotomy in the likeability of different reptile species is observed: turtle species tend to be liked much...

Ecosystem Services and Western U.S. Rangelands

Palavras-chave: Attitudes to survival of species; Biodiversity conservation; Conservation policies; Crocodiles; Dichotomy in the likeability of reptiles; Ecotourism; Phylogenetic similarity principle; Reptiles; Snakes; Turtles.; Environmental Economics and Policy; Institutional and Behavioral Economics; Q2; Q57.

Ano: 2010

URL: http://purl.umn.edu/92771

Paying for Avoided Deforestation - Should We Do It?

Skaggs, Rhonda K..

Tipo: Journal Article

Palavras-chave: Land Economics/Use; Resource /Energy Economics and Policy; Q24; Q28; Q57.

Ano: 2008

URL: http://purl.umn.edu/94652

Dynamic Processes in Contingent Valuation: A Case Study Involving the Mahogany Glider

Sohngen, Brent.

Tipo: Journal Article

Palavras-chave: Environmental Economics and Policy; Resource /Energy Economics and Policy; Q23; Q56; Q57.

Ano: 2008

URL: http://purl.umn.edu/94502

Tisdell, Clement A.; Wilson, Clevo; Swarna Nantha, Hemanath.

This paper reports the results of an experiment involving a sample of 204 members of the public who were assessed on three occasions about their willingness to pay for the conservation of the mahogany glider. They were asked this question prior to information being provided to them about the glider and other focal wildlife species; after such information was provided, and finally after participants had had an opportunity to see live specimens of this glider. The mean willingness to pay of the relevant samples are compared and found to show significant variations. Theories are considered that help explain the dynamics of these variations. Serious concerns are raised about the capacity of information provision to reveal ‘true’ contingent valuations of public...

How integrative modelling can break down disciplinary silos

Palavras-chave: Awareness; Contingent valuation; Dynamic processes; Experiential learning; Information; Wildlife; Willingness to pay; Environmental Economics and Policy; D83; D84; Q51; Q57.

Ano: 2004

URL: http://purl.umn.edu/51414

Kragt, Marit Ellen; Robson, Barbara J.; Macleod, Christopher J.A..

This paper has been published in a peer-reviewed journal as: Kragt, M.E., Robson, B.J. & Macleod, C.J.A. (2013) Modellers’ roles in structuring integrative research projects. Environmental Modelling & Software, 39(1): 322-330. DOI: 10.1016/j.envsoft.2012.06.015

Managing Forests for Sustainable Economic Development: Optimal Use and Conservation of Forests

Palavras-chave: Environmental modelling; Interdisciplinary research; Transdisciplinarity; Integration; Research Methods/ Statistical Methods; Q57; Y80; Z19.

Ano: 2011

URL: http://purl.umn.edu/108768

Tisdell, Clement A..

The conservation of natural forests contributes significantly to the goal of achieving sustainable economic development. There is, however, growing concern that natural forests (which provide tangible and intangible economic benefits to humankind) are being lost at a rate which (combined with other factors) seriously threatens sustainable economic development because of the environmental and social impacts of such loss. There is little doubt that in order to achieve sustainable development, multifunctional forest ecosystems (as well as other important ecosystems) need to be managed appropriately. However, determining the socially optimal level of conservation and use of forests is a challenging task. From a human point of view, it is clearly not optimal to...

Sustainable Agriculture: An Update

Palavras-chave: Discount rates; Ecosystem services; Environmental conservation; Forests; Intergenerational equity; Multifunctionality; Resource economics; Sustainable development; Community/Rural/Urban Development; Environmental Economics and Policy; Q20; Q23; Q56; Q57.

Ano: 2010

URL: http://purl.umn.edu/90465

Assessing the impact of rural policy on biodiversity: High Nature Value Farming in Italy

Tisdell, Clement A..

Provides some background on concerns about the sustainability of agriculture, outlines and discusses views about what constitutes sustainable agriculture and contrasts the sustainability of modern industrialised agriculture with that of traditional agriculture. Then the question is considered (taking into account the available evidence) whether organic agriculture is more sustainable than non-organic agriculture. Barriers to switching from non-organic to organic agriculture are mentioned. The development of agriculture usually has a serious negative impact on wild biodiversity. Whether or not more intensive agriculture would reduce the negative ecological footprint is unclear but many scientists believe it will do this. Globally, there has been a rapid...

Tipo: Working Paper

Palavras-chave: Biodiversity loss; Genetically modified crops; Industrialised modern agriculture; Organic agriculture; Sustainable agriculture; Sustainable development; Agricultural and Food Policy; Crop Production/Industries; Environmental Economics and Policy; Q01; Q16; Q57.

Ano: 2012

URL: http://purl.umn.edu/140549

Trisorio, Antonella; Borlizzi, Andrea.

Farming practices and the conservation value of farmland are intimately interconnected. The recent policy debate has shed light on the need to address farming activities towards a more sustainable path, and has advocated for a reallocation of payments towards farming systems that provide public goods. This paper aims to explore likely HNV farms policy needs through the use of HNV farming system indicators.

THE MARGINAL COST OF AGRI-ENVIRONMENTAL SERVICES

Palavras-chave: High Nature Value; Monitoring and evaluation; Biodiversity indicator; Farming systems.; Agricultural and Food Policy; Q18; Q57.

Ano: 2011

URL: http://purl.umn.edu/100042

Sauer, Johannes; Wossink, Ada.

A3_2

Need, Greed or Customary Rights - Which Factors Explain the Encroachment of Protected Areas? Empirical Evidence from a Protected Area in Sulawesi, Indonesia

Palavras-chave: Agri-environmental services; Bio-economic modelling; Economies of scale and scope; Environmental Economics and Policy; Land Economics/Use; Research Methods/ Statistical Methods; Q18; Q57; Q58.

Ano: 2010

URL: http://purl.umn.edu/93939

Birner, Regina; Maertens, Miet; Zeller, Manfred.

The encroachment of protected areas for agricultural and livestock production is an important challenge for nature conservation in developing countries. The driving forces of encroachment are debated - major arguments focus on (1) the need of local people to cultivate land inside protected areas due to poverty, (2) commercial interests of cultivating inside protected areas, which indicates free-riding ("greed"), and (3) resistance against protected areas caused by disregard of customary rights. Understanding the role of these factors is important for designing appropriate conservation and development strategies. The paper contributes to this understanding by analyzing the encroachment of a National Park in Sulawesi, Indonesia. The analysis is guided by a...

Marketed Outputs and Non-Marketed Outputs: The Marginal Costs of Producing Ecosystem Services

Palavras-chave: Land use change; Nature conservation; Household decision-making; Regulation; Indonesia; Resource /Energy Economics and Policy; O13; Q12; Q57.

Ano: 2006

URL: http://purl.umn.edu/25706

Wossink, Ada; Sauer, Johannes.

We provide a new approach for assessing the cost of marginal ecosystem changes and the effectiveness of green payment schemes. The approach is based on a theoretical and empirical analysis of the bio-economic production interactions between marketed outputs and non-marketed ecosystem services at the micro level. To frame the economic nature of the problem, we employ a generalized joint production model in combination with cost minimization. The generalized joint production framework allows for the consideration of complementary, supplementary and competitive relationships between agricultural production and non-marketed ecosystem services generation and avoids double counting. From this theoretical model we distinguish three theoretical cases depending on...