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| Registros recuperados: 10 | |
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| Johnson, Fred A; U.S. Geological Survey; fjohnson@usgs.gov; Eaton, Mitchell J; U.S. Geological Survey; mitchell.eaton@usgs.gov; McMahon, Gerard; U.S. Geological Survey; gmcmahon@usgs.gov; Nilius, Raye; U.S. Fish and Wildlife Service; raye_nilius@fws.gov; Bryant, Michael R.; U.S. Fish and Wildlife Service; mike_bryant@fws.gov; Case, David J.; DJ Case & Associates; dave@djcase.com; Martin, Julien; U.S. Geological Survey; julienmartin@usgs.gov; Wood, Nathan J; U.S. Geological Survey; nwood@usgs.gov; Taylor, Laura; North Carolina State University; lotaylor@ncsu.edu. |
| National Wildlife Refuges (NWRs) in the United States play an important role in the adaptation of social-ecological systems to climate change, land-use change, and other global-change processes. Coastal refuges are already experiencing threats from sea-level rise and other change processes that are largely beyond their ability to influence, while at the same time facing tighter budgets and reduced staff. We engaged in workshops with NWR managers along the U.S. Atlantic coast to understand the problems they face from global-change processes and began a multidisciplinary collaboration to use decision science to help address them. We are applying a values-focused approach to base management decisions on the resource objectives of land managers, as well as... |
| Tipo: Peer-Reviewed Insight |
Palavras-chave: Adaptive management; Allocation; Decision analysis; Ecosystem valuation; Global change; National Wildlife Refuge; Objectives; Policy; Portfolio analysis; Reserve design; Stakeholders. |
| Ano: 2015 |
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| Katchova, Ani L.. |
| This study examines the portfolio allocation of assets for farm and nonfarm households using the Agricultural Resource Management Survey and the Survey of Consumer Finances. The stylized facts of household finance, including limited participation in equity markets and heterogeneity of asset portfolios, are also confirmed for farm households. However, farm households show fewer differences in participation rates and asset allocation across wealth groups. Probit and conditional regression models indicate that fewer demographic factors affect participation rates and portfolio shares of risky assets for farm than nonfarm households. The aggregate statistics seem overwhelmingly influenced by households with large holdings of risky assets as shown by quantile... |
| Tipo: Journal Article |
Palavras-chave: Farm households; Financial management; Nonfarm households; Portfolio analysis; Quantile regression; Agricultural Finance; Financial Economics. |
| Ano: 2008 |
URL: http://purl.umn.edu/48143 |
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| Nalley, Lawton Lanier; Barkley, Andrew P.. |
| This study applies portfolio theory to wheat varietal selection decisions in order to find risk-minimizing outcomes while holding historical yields constant. Potential correlation across wheat cultivar yields increases the complexity of cultivar selection decisions, with gains in one attribute (yield potential) often associated with losses in another (yield stability). Using location-specific empirical data, portfolio theory can provide producers in low-income countries a tool for developing a recommended portfolio of varieties given a desired risk-aversion level. Based on data from Mexico’s Yaqui Valley, results suggest that sowing a portfolio of wheat varieties could have lowered yield variance by 22% to 33% in Northwest Mexico. |
| Tipo: Journal Article |
Palavras-chave: Optimal variety selection; Portfolio analysis; Wheat; Crop Production/Industries. |
| Ano: 2010 |
URL: http://purl.umn.edu/93223 |
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| Van Asseldonk, Marcel A.P.M.; Majewski, Edward; Meuwissen, Miranda P.M.; Was, Adam; Guba, Waldemar; Dalton, Graham E.; Landmesser, Joanna; Berg, Ernst; Huirne, Ruud B.M.. |
| The main objective was to assess the risk of farmers in the European Union and to analyze the impact of agricultural policy changes on the main components of income namely price and production risks. In order to achieve this, qualitative considerations and quantitative analyses covering the period 2004 – 2018 have been made. Future policy scenarios have been defined, taking into account likely Common Agricultural Policy developments, including possible outcomes of the Doha round of the WTO negotiations. Subsequently, the economic impact of policy scenarios in conjunction with a set of prospective risk management instruments for the European Union are determined. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Portfolio analysis; Policy scenarios; Risk Management Instruments. |
| Ano: 2008 |
URL: http://purl.umn.edu/48104 |
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| Registros recuperados: 10 | |
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