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| Registros recuperados: 26 | |
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| Cruz Rosales, Ma. Magdalena. |
| El ganado vacuno produce alimentos y otros bienes, junto con estiércol. Los escarabajos estercoleros al enterrar, desmenuzar y consumir el estiércol, limpian el pasto que será consumido por el ganado; reintegrando nutrientes al suelo, fertilizándolo y eliminando huevos de parásitos y moscas. En la zona ganadera de La Laguna, Veracruz, se midió la acción de los escarabajos en la descomposición del estiércol durante la temporada de lluvias del 2009, ahí se observaron tres especies abundantes de escarabajos durante la primera semana de exposición de las boñigas. Se comprobó mediante un modelo de regresión, que durante la temporada de lluvias, los escarabajos estercoleros reducen 80% del peso de las boñigas en 3 días, pero en su ausencia la misma pérdida de... |
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Palavras-chave: Servicios ambientales; Enterramiento estiércol; Ivermectina; Valoración económica; Environmental services; Burial dung; Ivermectin; Economic assessment; Doctorado; Agroecosistemas tropicales. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/696 |
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| López Paniagua, Cristopher. |
| Se realizó un estudio de mercado de los servicios ambientales hidrológicos (SAH) en la cuenca de Tapalpa, Jalisco, México, cuya superficie es de 21,000 ha, donde el 44% es de uso forestal. Para determinar la oferta hidrológica se utilizó el modelo hidrológico SWAT (soil and water assesment tool, herramienta de valoración de suelo y agua) que presentó un buen ajuste (R2 = 0.85) al ser calibrado con la producción de agua en una de las cinco subcuencas que integran el área de estudio. El análisis de demanda indica que existe un superávit del recurso hídrico (19,792,015 m3/año), ya que solamente se aprovecha el 54% (23,171,885 m3/ha) de la oferta total (42,963,900 m3/ha). De ésta, el 93% seutiliza en el sector agrícola, principalmente en la producción de... |
| Tipo: Tesis |
Palavras-chave: Disponibilidad a pagar; Servicios ambientales; Costo de oportunidad; Uso del suelo; Oferta de agua; Maestría; Forestal; Willingness to paid; Environmental services; Opportunity cost; Land use; Supply of water. |
| Ano: 2007 |
URL: http://hdl.handle.net/10521/1606 |
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| Prado,Rachel Bardy; Fidalgo,Elaine Cristina Cardoso; Monteiro,Joyce Maria Guimarães; Schuler,Azeneth Eufrausino; Vezzani,Fabiane Machado; Garcia,Junior Ruiz; Oliveira,Aline Pacobayba de; Viana,João Herbert Moreira; Pedreira,Bernadete da Conceição Carvalho Gomes; Mendes,Ieda de Carvalho; Reatto,Adriana; Parron,Lucília Maria; Clemente,Eliane de Paula; Donagemma,Guilherme Kangussu; Turetta,Ana Paula Dias; Simões,Margareth. |
| Abstract Human pressure on ecosystems has undesirable impacts on human well-being. After the Millennium Project, much interdisciplinary research has been developed worldwide aiming to understand these impacts on ecosystem flows and processes, and to learn about the costs and the benefits of ecosystem services for production. Soil provides many ecosystem services, since its multi-functionality is the basis for food production, water filtration, nutrient cycling, and other goods essential to life. This article presents the main concepts and classifications of soil ecosystem services and of its functions; the indicators and the methods for assessment, modeling, and valuation of ecosystem services; some recent applications to assess and evaluate impacts of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Economic valuation; Environmental services; Soil function; Soil indicators; Soil management; Public policy; Soil quality. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000901021 |
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| Baumert, Jennifer; Bloodgood, Laura. |
| Countries introduce private sector participation into the water and wastewater utilities sector for a number of reasons. The introduction of a profit motive may increase efficiency as compared to public management of the water system, and private firms have been noted for customer service improvements. Financial considerations, including revenues from the sale of assets and reductions in the direct cost of providing water services, may also motivate governments to introduce private sector participation in this industry. However, because water is a basic human necessity, the introduction of private participation in this industry sector may raise social, economic, and national security concerns. Private participation in the global water and wastewater... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Water; Wastewater; Environmental services; Private sector participation; Public Economics. |
| Ano: 2004 |
URL: http://purl.umn.edu/15876 |
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| Fischer, Anke; Hespelt, Sonja K.; Marggraf, Rainer. |
| 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 Union’s 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... |
| Tipo: Journal Article |
Palavras-chave: Environmental services; Decentralisation; Contingent valuation; Merit goods; Environmental Economics and Policy. |
| Ano: 2003 |
URL: http://purl.umn.edu/98083 |
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| Adekunle, M.F.; Adedokun, M.O.; Adedoja, A.A.. |
| Payments for environmental services (PES) especially of the forests are considered a potential instrument to mitigate environment and development challenges faced in many tropical countries. The success of any PES scheme is highly dependent on reliable economic data and monetary values of the services provided by the forest trees and vegetation. Hence the relevance of this study which adopted the contingent valuation method (CVM) to derive a monetary valuation for the environmental service functions of forest trees in University of Agriculture, Abeokuta (UNAAB) urban environment. Data were obtained from a multistage random sampling of 48 out of the 75 registered students’ Corporate Organisation made of Academic, Religion and Socio-cultural organisations... |
| Tipo: Report |
Palavras-chave: Contingent valuation; Environmental services; Willingness to pay (WTP); Environmental Economics and Policy. |
| Ano: 2006 |
URL: http://purl.umn.edu/54406 |
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| Nordblom, Thomas L.; Hume, Iain H.; Cresswell, Hamish; Glover, Mark; Hean, Robyn L.; Finlayson, John D.; Wang, Enli. |
| Although dryland farming and grazing have been practiced for over 130 years in the 17,000 ha Simmons Creek catchment without surface salinity problems, the area has been identified as a significant source of salt seepage to Billabong Creek in the NSW Murray catchment. Groundwater movement and salinity levels are spatially heterogenous at Simmons Creek. Groundwater of the upper catchment is relatively fresh and seemingly unconnected with the highly saline groundwater of the lower catchment. However, fresh surface water does flow from the upper to the lower catchment. This spatial diversity provokes the question of where high-water-use forest habitats might be placed to achieve different combinations of environmental services (greater water yield, lower... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Optimisation; Opportunity costs; Forest-habitat; Environmental services; Environmental Economics and Policy. |
| Ano: 2007 |
URL: http://purl.umn.edu/10357 |
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| Sakuyama, Takumi. |
| This article evaluates the effectiveness of ex-post targeting of the direct payment program for mountain agriculture in Japan. A regression analysis explaining the entry into the program shows that the farm profitability and the production cost were significant positive and negative factor, respectively, in determining the uptake, while the efforts by local governments were a robust factor in facilitating the enrollment. These findings imply ineffective ex-post targeting and call for the differentiation of the premium, alternative incentives to promote forestation for the un-enrolled fields and additional funds targeted to those prefectures with the low uptake ratio. Lessons drawn from the Japanese experience for effective incentive measures in developing... |
| Tipo: Journal Article |
Palavras-chave: Cost-effectiveness; Direct payment; Environmental services; Mountain farming; Targeting; Transaction costs; Japan; Environmental Economics and Policy. |
| Ano: 2006 |
URL: http://purl.umn.edu/110128 |
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| Registros recuperados: 26 | |
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