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Biokraftstoff-Zertifizierungssysteme ISCC und REDcert: Darstellung, Vergleich und kritische Diskussion Provedor de dados: 31 Autores: Bucheler, Gerolf. Tipo: Working Paper Palavras-chave: Environmental Economics and Policy; Resource /Energy Economics and Policy. Ano: 2011 URL: http://purl.umn.edu/118989 THE ECONOMIC THRESHOLD FOR GRASSHOPPER CONTROL ON PUBLIC RANGELANDS Provedor de dados: 31 Autores: Davis, Robert M.; Skold, Melvin D.; Berry, James S.; Kemp, William P. The U.S. Department of Agriculture's Animal and Plant Health Inspection Service (APHIS) is responsible for controlling grasshopper populations on public rangelands. Under current guidelines, control of grasshoppers on rangeland should occur if grasshopper densities are at least eight per square yard. This article evaluates the concept of an economic threshold relative to the value of forage saved from destruction during a grasshopper outbreak. It is shown that financial justification for treating grasshopper outbreaks depends upon grasshopper density, rangeland productivity, climate factors, livestock cost and return relationships, and the efficacy of treatment options. Tipo: Journal Article Palavras-chave: Resource /Energy Economics and Policy; Land Economics/Use. Ano: 1992 URL: http://purl.umn.edu/30742 Biological Control of Water Hyacinth 2 Provedor de dados: 31 Autores: Julien, Mic H.; Griffiths, M.W.; Stanley, J.N. Tipo: Report Palavras-chave: Resource /Energy Economics and Policy. Ano: 2001 URL: http://purl.umn.edu/117717 Groundwater Management in the Presence of Greenhouse Gas Mitigation Incentives for Agriculture Provedor de dados: 31 Autores: Baker, Justin Scott; Murray, Brian C. This study explores the interactions of groundwater extraction, quality, and greenhouse-gas (GHG) emissions within a productive agricultural region. Two conceptual models are proposed. In the first, GHG emissions are managed at the local level, and an efficient level of abatement is solved for endogenously to the system. Here, regional management of GHG emissions offers an alternative policy tool for managing quantity/quality by internalizing the costs of a common externality associated with both groundwater extraction and nitrogen fertilizer application. A simple numerical simulation is used to illustrate the potential groundwater co-benefits of managing agricultural GHG emissions within the system. The second model reflects the reality that GHG... Tipo: Conference Paper or Presentation Palavras-chave: Groundwater; GHG Mitigation; Environmental Economics and Policy; Resource /Energy Economics and Policy; Q25; Q53; Q54.