68 research outputs found
Valuation of Ecosystem Services Provided by Biodiversity Conservation: An Integrated Hydrological and Economic Model to Value the Enhanced Nitrogen Retention in Renaturated Streams
The importance of ecosystem functions for humankind is well known. But only few attempts have been undertaken to estimate the economic value of these ecosystem services. In particular, indirect methods are rarely used, even though they are most suitable for the task. This discrepancy is because quantitative knowledge of changes in ecosystem functions is scarce. This paper presents a user-friendly procedure to quantify the increased N-retention in a renaturated river using easily available data. In a case study of the renaturated River Jossa (Germany) the benefits of increased nitrogen retention caused by beaver reintroduction are determined by using the replacement cost method. The quantification of chemical processes is discussed in detail, as well as the problems of defining an adequate reference scenario for the substitute costs. Results show that economic benefits from the evaluated ecosystem service (âŹ12,000/annum) equal 12% of the total costs of the corresponding conservation scheme.Biodiversity conservation programmes, Cost-benefit-analysis, Replacement cost method, Ecosystem services, Nutrient retention
CONSUMER WILLINGNESS-TO-PAY FOR FARM ANIMAL WELFARE IN GERMANY - THE CASE OF BROILER
Estimating the value consumers place on farm animal welfare (FAW) can predict the extent to which consumers are ready to support policy changes aimed at improving the welfare of farm animals and developing animal-friendly production systems that can also compete on markets. This study aimed at exploring consumer preferences and willingness-to-pay (WTP) for broiler meat in Germany which is certified as having been produced under a system that caters for FAW. In addition, logistic and linear regression models were estimated to examine the factors affecting consumersâ decision to buy certified FAW products. The data was obtained from a survey of 300 German broiler consumers, which was designed using the contingent valuation methodology. The results showed that 82% of the respondents were ready to buy certified FAW products. A majority of these (95%) were willing to pay an extra sum of about âŹ1.5 for 1 kg of the certified FAW broiler fillets. This represents a price increase of about 27% in comparison with the actual price of conventional broiler fillets. The WTP estimates reveal that there is a potential for improvement of FAW standards in conventional broiler production. The magnitude of these estimates, however, shows that consumer WTP is below the actual price premium demanded by producers for existing animal-friendly programs for broiler production. This explains why the market for certified FAW broilers fails and calls for a policy change towards higher minimum standards of broiler welfare. Ziel dieser Studie ist es, Erkenntnisse ĂŒber die PrĂ€ferenzen der deutschen Verbraucher fĂŒr das Wohlergehen von Nutztieren (farm animal welfare FAW) zu gewinnen. Erforscht wurde die Zahlungsbereitschaft fĂŒr HĂ€hnchenfleisch, welches FAW zertifiziert produziert wird. AuĂerdem wurden logistische und lineare Regressionsmodelle geschĂ€tzt, um die Faktoren zu bestimmen, welche die Verbraucher bei ihrer Kaufentscheidung fĂŒr FAW zertifizierte Produkte beeinflussen. Die Daten wurden durch eine Umfrage bei 300 deutschen HĂ€hnchenfleischverbrauchern ermittelt, wobei die kontingente Bewertungsmethode verwendet wurde. Die Ergebnisse zeigen, daĂ 82 % der Befragten bereit waren, FAW zertifizierte Produkte zu kaufen. Von diesen war die ĂŒberwiegende Mehrheit (95 %) bereit, einen zusĂ€tzlichen Betrag von ca. 1,50 ⏠pro kg fĂŒr FAW zertifizierte HĂ€hnchenfilets zu zahlen. Dies stellt einen Preisanstieg von ca. 27 % dar im Vergleich zu dem aktuellen Preis fĂŒr konventionell produzierte HĂ€hnchenfilets. Die zusĂ€tzliche Zahlungsbereitschaft der Verbraucher liegt jedoch unterhalb der aktuellen PreisprĂ€mie, die die Hersteller bestehender FAW-Programme in der HĂ€hnchenproduktion verlangen. Dies erklĂ€rt, warum der Markt fĂŒr zertifiziertes FAW-GeflĂŒgelfleisch nicht erfolgreich ist.farm animal welfare (FAW), broiler, contingent valuation method (CVM), willingness-to-pay (WTP), Agribusiness,
Verbraucherschutz vor dem Schimmelpilzgift Deoxynivalenol in Getreideprodukten: aktuelle Situation und Verbesserungsmöglichkeiten
Dieses Diskussionspapier beschĂ€ftigt sich mit der Problematik des Mykotoxins Deoxynivalenol (DON) im Getreide und Möglichkeiten des Managements der daraus entstehenden Risiken. DON in Getreide stellt in hiesigen Breiten derzeit kein akutes Gesundheitsrisiko dar. Gleichwohl können die gesetzlichen Regelungen als unbefriedigend angesehen werden, da sie den Verbraucher nicht adĂ€quat vor chronischen Effekten schĂŒtzen. Die zulĂ€ssigen Höchstgehalte (Grenzwerte) lassen DON-Gehalte zu, die zu einer Ăberschreitung der langfristig toxikologisch unbedenklichen MaĂe fĂŒhren können. Derzeit liegt die Aufnahme durch die Mehrzahl der Konsumenten unter diesem MaĂ, da die tatsĂ€chlichen Mykotoxingehalte hĂ€ufig unter den zulĂ€ssigen liegen. Durch den zu erwartenden Anstieg der Mykotoxinproblematik, aufgrund des Klimawandels und starken Wettbewerbdrucks in der Landwirtschaft, Ă€ndert sich die Situation. Der Verzehr von Getreideprodukten kann dann zu nennenswerten gesundheitlichen BeeintrĂ€chtigungen fĂŒhren, verbunden mit negativen Wohlfahrtseffekten. Es kann gezeigt werden, dass sich diese Probleme durch eine adĂ€quate VerbraucheraufklĂ€rung verbessern lassen. --
Analyse der deutschen globalen Waldpolitik im Kontext der Klimarahmenkonvention und des Ăbereinkommens ĂŒber die biologische Vielfalt
Die Verminderung des Klimawandels und der Erhalt der biologischen Vielfalt zĂ€hlen zu den dringendsten politischen Herausforderungen des 21. Jahrhunderts. Zwischen den beiden Zielsetzungen bestehen starke Interdependenzen. Eine nachhaltige Waldpolitik ist in diesem Zusammenhang von enormer Bedeutung, da WĂ€lder - vor allem TropenwĂ€lder - gleichzeitig eine hohe BiodiversitĂ€tsrate aufweisen und groĂe Mengen Kohlenstoff speichern. Sie stellen auĂerdem die Lebensgrundlage fĂŒr Millionen von Menschen dar. Ihr Schutz ist deshalb Bestandteil sowohl der Convention on Biological Diversity (CBD) als auch der Framework Convention on Climate Change (FCCC) der Vereinten Nationen (UN), die 1992 im Rahmen der Konferenz fĂŒr Umwelt und Entwicklung in Rio de Janeiro verabschiedet wurden. In der internationalen Klima? und BiodiversitĂ€tspolitik stehen entscheidende Weichenstellungen an, welche Auswirkungen auf die globale Waldpolitik haben werden. Es bestehen jedoch auf unterschiedlichen Ebenen Konflikte zwischen den Konventionen... --
Ăkonomische Bewertung von Kindergesundheit in der Umweltpolitik: Aktuelle AnsĂ€tze und ihre Grenzen
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Differential Influence of Relative Poverty on Preferences for Ecosystem Services: Evidence from Rural Indonesia
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 of the endemic forest dwelling dwarf buffalo "anoa"). Relative poverty was calculated with the 2005 data using a 0,1-normally distributed relative poverty index developed from a socio-demographic household survey administered to the same sample in 2004. For shading in cocoa, a linearly decreasing trend is observed indicating a stronger preference for "sun-grown" cocoa in the less poor farmers indicating a constant poverty elasticity of WTP. The empirical poverty elasticity for anoa supports its luxury good characteristic only in part. For rattan and water, we find an inverted U-shape relation between MWTP for ecosystem services and relative poverty - probably due to serious restrictions in the ability to pay in the poorest households and a smaller resource dependency in the less poor households. In sum, the relationship between relative poverty and MWTP for ecosystem services appears more complex than classical micro-economic theory admits.Relative poverty, Choice experiment, ecosystem services, environmental valuation, Resource /Energy Economics and Policy, Q21, Q51, Q56, Q57,
Potential of Opuntia seed oil for livelihood improvement in semi-arid Madagascar
The coastal area of the Mahafaly Plateau in southwestern Madagascar is prone to droughts, as well as to other environmental risks, resulting in frequent crop failures, famines, and extreme poverty. Thus, the identification of potential complementary livelihood sources has been identified as a crucial step for the sustainable development of the region. In this contribution, we assess the potential of prickly pear seed oil production as an income alternative for local communities. The prickly pears are cacti in the genus Opuntia Mill. and they are highly abundant in the region, particularly as living fences on farmland. From the seeds of its fruit, high-priced seed oil can be extracted. To investigate its economic potential, we inventoried prickly pears in field hedgerows through vegetation inventories and estimated the amount of seed oil that could be produced per household based on field sampling and laboratory analysis. To assess the socioeconomic impact of a potential large-scale project of regional Opuntia seed oil production, we conducted interviews with 51 farming households on human Opuntia consumption, the utilization of its cladodes as fodder, and other livelihood functions.Five different prickly pears occur in the research region. We found that two out of these five species are highly important socioeconomically (Opuntia monacantha and O. streptacantha) and contribute >50% to total food intake during periods of food shortage. Likewise, these species are consumed as a key water source and used as livestock fodder. In contrast, the other three Opuntia species are barely eaten by local residents or by livestock (O. dillenii, O. stricta and O. phaeacantha). These species are more spiny, and their fruits are virtually inedible due to a much higher seed content. The combination of low nutritional value and high seed content suggests promising seed oil production potential for these types of Opuntia. To avoid competition between human nutrition and the commercialization of local Opuntia seeds, sourcing strategies should exclusively target the fruit of the two high seed species. However, investments for oil mills, skilled staff, and adequate logistics would be needed to create local value from this underrated resource in the Mahafaly region
Ermittlung der Nachfrage nach ökologischen GĂÂŒtern der Landwirtschaft â Das Northeim-Projekt
This paper presents a case study on the development and implementation of a decentralised and outcome-based agri-environmental payment scheme in a project region in central Germany. A research group from Goettingen University together with local actors designed the scheme which complies with the European Unionâs Common Agricultural Policy. The core of the programme is the creation of a market for ecological goods, in this case: of plant diversity standards in agriculture. Supply is provided by the local farmers, who, in an open competitive bidding, offer to produce as much as they are willing to of the commodity in question. The local population has to be seen as the beneficiary of these environmental goods. In the project, it is represented by a Regional Advisory Board which expresses the demand for plant diversity (i) by defining the goods and (ii) by allocating the funds to the respective goods. Hence, these plant diversity goods are treated as merit goods. To justify this approach, results from a contingent valuation study that focused on the respondentsâ decision behaviour are applied. These results show that the utility expected from the provision of these goods is substantial and that ecological goods are considered as personally relevant. Based on these findings, the paper discusses the provision of ecological goods as merit â as opposed to private â goods.environmental services, decentralisation, contingent valuation, merit goods, Environmental Economics and Policy,
Effects of a rural poverty alleviation project on production system and farming income
129 p.The study was carried out in the Secano Coastal area, a coastal dryland of Central Chile, geographically located in the community of Curepto, belonging to the Talca province in the Maule region (VII region) from October to November 2003. It used an ex-post fact investigation design with a historic control group (reflexive comparison). Small farmers who participated in the poverty alleviation project Prodecop-Secano (performed from 1997 to 2003) composed the target population. The sample consisted on 90 small farmers selected from 11 localities (characterized in Low, Middle and High land area). The data were collected from the sampled farmers by face-to-face interviews.
Mainly, the study investigated if the on-farm income of participating households increased by the comparison of gross margins. It also examined effects on the production system of the farmers, the adoption of more sustainable resource conservation agricultural practices designed to manage drought and erosion risks, which constituted an additional aim of Prodecop-Secano. It explored the risk perception and coping strategies with Lickert-type attitude scales and open questions.
Land availability and land tenure did not change since the start of the project. The farm capital increased, mainly because the facilities improved (durable assets). The production system showed some changes as the farmers introduced more labour intensive crops, such as fruit trees and vegetables. Also, some small forest plantations were added. There was no significant improvement on-farm income of the farmers (total sample) between the time before and after the project intervention. As well, there was no unanimous trend in on-farm income among areas. In the Low land-area income decreased, while in Middle and High land areas it increased. The variability of on-farm income also increased strongly. The farmers fear environmental risks -particularly severe droughts- more strongly than economic risks. The adoption of resource conservation agricultural practices -including terraces, irrigation techniques- was highly variable and it found high percentage of farmers that stopped the use of these practices.
Keywords: Dry land, income, gross margin, poverty, risk, adoptio
Willingness to buy and preferences of german citizens concerning protected ornamental plants from Bolivia
107 p.Mega-biodiverse but poor countries, like Bolivia, have the challenge to find a way of
development that allows the conservation of their particular nature heritage.
Commercialization of protected biodiversity (a component of Biotrade initiatives) may
open new income sources, but there is little information about potential markets and the
attitude of the potential consumers towards this possibility. Thus, this study analyzes the
German citizensÂŽ attitudes towards a possible trade of protected ornamental plants. State
preferences techniques: contingent valuation and choice experiment methods were used
for the evaluation and the results were interpreted from the perspective of the neoclassical
demand theory and the theory of random utility (consumer behavior model). 206
inhabitants from Göttingen, Germany, older than 16 years were interviewed. The results
reveal that Göttingenâs inhabitants express a positive response to the offer of ornamental
plants. They show a high willingness to buy and even to pay more for ornamental
protected plants from Bolivia. This behavior is mainly influenced by factors such as the
type of management, origin of plants, price, knowledge about protection in plants, relation
with nature issues, type of plants, educational level and income per month. These results
would suggest a positive scenario to promote protected plant trade. However, under the
conditions of a real market, the âprotection statusâ -as an attribute- of the offered
ornamental plants would be less decisive for purchasing plants according to a choice
experiment method. This has shown that among other alternatives, price and
management are also determinant factors. Hence, to evaluate the potential of
commercialization, protected plants must also be analyzed according to standard
marketing characteristics looking at attributes such as color of flowers and leaves, size of
plants, etc. The results of this pioneer study instigate more investigation about Biotrade
and specific and detailed market analysis for protected plants
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