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Registros recuperados: 26
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Contribución de los escarabajos estercoleros a la productividad ganadera en Veracruz. Colegio de Postgraduados
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...
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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El programa de pago de servicio ambiental hidrológico (PSAH) como una estrategia de conservación de recursos naturales y sensibilización ambiental de la región Izta-Popo Colegio de Postgraduados
Martínez Cruz, Diego Armando.
Los bosques de la región Izta-Popo del estado de Puebla son importantes para mantener los procesos del ciclo hidrológico, del cual depende el abastecimiento de agua para las comunidades locales y para la ciudad de Puebla. Para evitar la pérdida y deterioro de estos bosques en la región, la Comisión Nacional Forestal (CONAFOR) ha ejecutado desde hace 5 años el programa de Pago por Servicios Hidrológicos (PSAH). Si se toma en cuenta que el éxito de cualquier estrategia de conservación depende en gran medida de su aprobación por parte de las comunidades poseedoras de los recursos, el conocer la percepción y actitudes respecto a temas de conservación dará elementos para revisar la pertinencia, limitaciones y efectos positivos del programa en la región. En este...
Tipo: Tesis Palavras-chave: Servicios ambientales; Actitud; Percepción; Conservación; Valoración económica; Maestría; EDAR; Estrategias para el Desarrollo Agrícola Regional; Environmental services; Attitude; Perception; Conservation; Economic valuation..
Ano: 2009 URL: http://hdl.handle.net/10521/1602
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Estudio de mercado del servicio ambiental hidrológico en la cuenca de Tapalpa, Jalisco Colegio de Postgraduados
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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Análisis comparativo de costos del uso de la tierra en la Sierra Norte de Puebla. Colegio de Postgraduados
Rojas López, Odilia.
En México, los mecanismos de pago por servicios ambientales (PSA) son relativamente recientes por lo que todavía existen algunos aspectos a mejorar en su aplicación. Un componente crucial en el PSA Hidrológico (PSAH) es la determinación de los montos de pago adecuados a los productores forestales por la renta de sus terrenos. La presente investigación estimó la renta de la tierra bajo los usos agrícola, pecuario y forestal, a través del método costo de oportunidad, en la Sierra Norte de Puebla. Además, determinó cómo las características físico-químicas de los suelos de aptitud forestal se modifican ante un cambio de uso de la tierra limitando la provisión de servicios ambientales. El estudio se integró y desarrolló en cuatro capítulos: (I) Introducción...
Palavras-chave: Cambios de uso de la tierra; Características químicas; Costo de oportunidad; Servicios ambientales; Renta de la tierra; Land use change; Chemical characteristics; Opportunity cost; Environmental services; Land rent; Maestría; Forestal.
Ano: 2011 URL: http://hdl.handle.net/10521/475
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Análisis comparativo de costos del uso de la tierra en la Sierra Norte de Puebla. Colegio de Postgraduados
Rojas López, Odilia.
En México, los mecanismos de pago por servicios ambientales (PSA) son relativamente recientes por lo que todavía existen algunos aspectos a mejorar en su aplicación. Un componente crucial en el PSA Hidrológico (PSAH) es la determinación de los montos de pago adecuados a los productores forestales por la renta de sus terrenos. La presente investigación estimó la renta de la tierra bajo los usos agrícola, pecuario y forestal, a través del método costo de oportunidad, en la Sierra Norte de Puebla. Además, determinó cómo las características físico-químicas de los suelos de aptitud forestal se modifican ante un cambio de uso de la tierra limitando la provisión de servicios ambientales. El estudio se integró y desarrolló en cuatro capítulos: (I) Introducción...
Palavras-chave: Cambios de uso de la tierra; Características químicas; Costo de oportunidad; Servicios ambientales; Renta de la tierra; Land use change; Chemical characteristics; Opportunity cost; Environmental services; Land rent; Maestría; Forestal.
Ano: 2011 URL: http://hdl.handle.net/10521/475
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Understanding Public Support for Indigenous Natural Resource Management in Northern Australia Ecology and Society
Zander, Kerstin K; Research Institute for the Environment and Livelihoods, Charles Darwin University; The Northern Institute, Charles Darwin University; kerstin.zander@cdu.edu.au.
Increased interest in indigenous-led natural resource management (NRM) on traditionally owned land in northern Australia has raised important questions in relation to policies that compensate indigenous Australians for providing environmental services. A choice experiment survey was mailed out to respondents across the whole of Australia to assess if and to what extent Australian people think that society benefits from these services and how much they would pay for them. More than half the respondents would in principle support indigenous NRM in northern Australia, with a high willingness to pay for carbon, biodiversity, and recreational services. Social aspects of indigenous NRM, however, were not valued by the society, emphasizing the need for awareness...
Tipo: Peer-Reviewed Reports Palavras-chave: Choice experiment; Conservation marketing; Environmental services; PES; Traditional country; Willingness to pay.
Ano: 2013
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Economic Evaluation of Pollination Services Comparing Coffee Landscapes in Ecuador and Indonesia Ecology and Society
Olschewski, Roland; University of Goettingen; rolsche@uni-forst.gwdg.de; Tscharntke, Teja; University of Goettingen; ttschar@gwdg.de; Schwarze, Stefan; University of Goettingen; sschwar1@gwdg.de; Klein, Alexandra-Maria; University of Goettingen; aklein2@gwdg.de.
Tipo: Peer-Reviewed Reports Palavras-chave: Biodiversity conservation; Certified shaded coffee; Environmental services; Pest management.
Ano: 2006
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Poverty and Environmental Services: Case Study in Way Besai Watershed, Lampung Province, Indonesia Ecology and Society
Suyanto, S.; World Agroforestry Centre (ICRAF); suyanto@cgiar.org; Khususiyah, Noviana; World Agroforestry Centre (ICRAF); Nkhususiyah@cgiar.org; Leimona, Beria; World Agroforestry Centre (ICRAF); lberia@cgiar.org.
Tipo: Peer-Reviewed Reports Palavras-chave: Coffee trees; Agroforestry; Environmental services; Equity; Poverty; Payment for environmental services; Watershed; Lampung Province; Indonesia.
Ano: 2007
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The Conditions for Functional Mechanisms of Compensation and Reward for Environmental Services Ecology and Society
Swallow, Brent M.; University of Alberta; brent.swallow@ualberta.ca; Leimona, Beria; World Agroforestry Centre; L.Beria@cgiar.org; Yatich, Thomas; World Agroforestry Centre; T.Yatich@cgiar.org; Velarde, Sandra J.; World Agroforestry Centre; sjvelarde@gmail.com.
Mechanisms of compensation and reward for environmental services (CRES) are becoming increasingly contemplated as means for managing human–environment interactions. Most of the functional mechanisms in the tropics have been developed within the last 15 years; many developing countries still have had little experience with functional mechanisms. We consider the conditions that foster the origin and implementation of functional mechanisms. Deductive and inductive approaches are combined. Eight hypotheses are derived from theories of institution and policy change. Five case studies, from Latin America, Africa, and Asia, are then reviewed according to a common framework. The results suggest the following to be important conditions for functional CRES...
Tipo: Peer-Reviewed Reports Palavras-chave: Carbon sequestration; Ecosystem services; Ecotourism; Environmental services; Institutional change; Payments for environmental services; Watershed services.
Ano: 2010
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IMPACT OF LAND USE CHANGE ON THE WATER BALANCE IN A REPRESENTATIVE WATERSHED IN THE SEMIARID OF THE STATE OF PERNAMBUCO USING THE SWAT MODEL REA
Fontes Júnior,Robertson; Montenegro,Abelardo.
ABSTRACT The Brazilian semiarid region present high rainfall variability and long dry periods. Thus, the main springs and streams are generally intermittent, and both native vegetation and human activities have a strong influence on hydrological processes and the water yield in the watershed. The aim of this study was to investigate the impacts of reforestation of the arboreal Caatinga on the availability of water in a representative basin of the Northeast semiarid with strong anthropic influence, considering a period of severe water scarcity from 2012 to 2015, using the SWAT model as a management tool. The SWAT model successfully simulated the flow hydrograph for the period from 2000 to 2015, with Nash-Sutcliffe (NS) efficiency coefficient of 0.77 and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Environmental services; Water resources management; Hydrological modeling.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000100110
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Current overview and potential applications of the soil ecosystem services approach in Brazil PAB
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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Direct Payments for Environmental Services from Mountain Agriculture in Japan: Evaluating its Effectiveness and Drawing Lessons for Developing Countries AgEcon
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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Agricultural Land Tenure and Carbon Offsets AgEcon
Claassen, Roger; Morehart, Mitchell J..
Agricultural Land Tenure and Carbon Offsets examines the potential role that land ownership might play in determining the agricultural sector’s involvement in carbon sequestration programs. By estimating the carbon sequestration potential of agricultural producers who own most of the land they operate, this report finds that land ownership should not be a constraining factor in agriculture’s ability to provide carbon offsets.
Tipo: Report Palavras-chave: Keywords: Climate change; Carbon sequestration; Carbon offsets; Cap and trade programs; Farmland ownership; Tenure; Farming practices; Conservation practices; Conservation Reserve Program; Crops; Livestock; Environmental services; ERS; USDA; Environmental Economics and Policy; Land Economics/Use.
Ano: 2009 URL: http://purl.umn.edu/58994
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Valuation of Externalities in Water, Forests and Environment for Sustainable Development AgEcon
Varghese, Shalet K.; Manjunatha, A.V.; Poornima, K.N.; Akarsha, B.M.; Rashmi, N.; Tejaswi, Pillenahalli Basavarajappa; Saikumar, B.C.; Jeevarani, A.K.; Accavva, M.S.; Amjath Babu, T.S.; Suneetha, M.S.; Unnikrishnan, P.M.; Deshpande, R.S.; Nagaraj, N.; Chandrashekar, H.; Mahadev, G. Bhat; Chengappa, P.G.; Mundinamani, S.M.; Shanmugam, T.R.; Chandrakanth, Mysore G..
Conceptual development in the theory of externalities have opened up several policy options for their internalization including payment towards environmental services. Hence as externalities are social costs, accountability is crucial in increasing environmental awareness and for collective action through education and extension more so in developing countries. Here a modest attempt has been made to estimate externalities in water, forests and environment with field data from peninsular India to reflect on the economic perception of externalities by farmers and users of environment for the consideration of policy makers to devise institutions for payment towards environmental services. The methodology largely used here in estimation / valuation of...
Tipo: Conference Paper or Presentation Palavras-chave: Externalities; Environmental services; Sustainable development; Resource /Energy Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/44413
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Do Environmental Services Buyers Prefer Differentiated Rates? A Case Study from the Colombian Andes AgEcon
Moreno-Sanchez, Rocio del Pilar; Maldonado, Jorge Higinio; Wunder, Sven; Borda, Carlos Andres.
Flat user fees in payment for environmental services (PES) schemes promote administrative ease, and are sometimes perceived as egalitarian. However, when environmental service (ES) buyers are heterogeneous in their income and water consumption levels, this may not be optimal, as total payments become too low and services are under-supplied. This paper identifies ES buyer preferences and estimates their willingness to pay (WTP) differentiated fees in an ongoing PES initiative in an Andean watershed in Colombia. Small, flat user payments have recently been introduced to implement incipient watershed protection upstream. Environmental service users fall into two highly heterogeneous categories: smallholder peasants and owners of recreational houses. We...
Tipo: Working or Discussion Paper Palavras-chave: PES; WTP; Environmental services; Colombia; Watershed protection; Community/Rural/Urban Development; Demand and Price Analysis; Resource /Energy Economics and Policy; Q56; Q25; Q5; Q51; C25; D10; D12; D61; D63.
Ano: 2009 URL: http://purl.umn.edu/91171
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Private Sector Participation in the Water and Wastewater Services Industry AgEcon
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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Disposition of precipitation: Supply and Demand for Water Use by New Tree Plantations AgEcon
Nordblom, Thomas L.; Finlayson, John D.; Hume, Iain H..
As the greatest rainwater users among all vegetative land covers, tree plantations have been employed strategically to mitigate salinity and water-logging problems. However, large-scale commercial tree plantations in high rainfall areas reduce fresh water inflows to river systems supporting downstream communities, agricultural industries and wetland environmental assets. A bio-economic model was used to estimate economic demand for water by future upstream plantations in a sub-catchment (the 2.8 million ha Macquarie valley in NSW) of the Murray-Darling Basin, Australia. Given four tree-product values, impacts were simulated under two settings: without and with the requirement that permanent water entitlements be purchased from downstream entitlement...
Tipo: Conference Paper or Presentation Palavras-chave: Environmental Economics and Policy; Forest; Environmental services; Catchment; Water sources; Interception; Entitlement; Supply; Demand; Market; Economic surplus; Evapo-transpiration; Urban water; Irrigation; Wetlands..
Ano: 2011 URL: http://purl.umn.edu/101225
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Minimising costs of environmental service provision: water-yield, salt-load and biodiversity targets with new tree planting in Simmons Creek Catchment, NSW, a dryland farming/grazing area. AgEcon
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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VALUATION OF EXTERNALITIES IN WATER, FORESTS AND ENVIRONMENT FOR SUSTAINABLE DEVELOPMENT AgEcon
Verghese, Shalet K.; Manjunatha, A.V.; Poornima, K.N.; Akarsha, B.M.; Rashmi, N.; Tejaswi, Pillenahalli Basavarajappa; Saikumar, B.C.; Jeevarani, A.K.; Accavva, M.S.; Amjath Babu, T.S.; Suneetha, M.S.; Unnikrishnan, P.M.; Deshpande, R.S.; Nagaraj, N.; Chandrashekar, H.; Bhat, Mahadev G.; Chengappa, P.G.; Mundinamani, S.M.; Shanmugam, T.R.; Chandrakanth, Mysore G..
Paper presented at EAAE 2008 Congress
Tipo: Conference Paper or Presentation Palavras-chave: Consumer/Household Economics; Demand and Price Analysis; Environmental Economics and Policy; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Externalities; Environmental services; Sustainable development.
Ano: 2008 URL: http://purl.umn.edu/43617
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Green Technologies for a More Sustainable Agriculture AgEcon
Hrubovcak, James; Vasavada, Utpal; Aldy, Joseph E..
For U.S. agriculture to continue along a sustainable path of economic development, further production increases must be generated by technologies that are both profitable and more environmentally benign. In this context, we assess the role of these green or sustainable technologies in steering agriculture along a more sustainable path. However, the lack of markets for the environmental attributes associated with green technologies can limit their development. In addition, simply making a technology available does not mean it will be adopted. Experience with green technologies such as conservation tillage, integrated pest management, enhanced nutrient management, and precision agriculture demonstrates that even when technologies are profitable, barriers to...
Tipo: Report Palavras-chave: Sustainable agriculture; Natural capital; Nonrenewable resources; Renewable resources; Environmental services; Green technology; Integrated pest management; Conservation tillage; Enhanced nutrient management; Precision agriculture; Environmental Economics and Policy; Farm Management.
Ano: 1999 URL: http://purl.umn.edu/33721
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