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Registros recuperados: 29
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Lessons Learned from the First Decade of Adaptive Management in Comprehensive Everglades Restoration Ecology and Society
LoSchiavo, Andrew J.; U.S. Army Corps of Engineers; andrew.j.loschiavo@usace.army.mil; Best, Ronnie G.; United States Geological Survey; Ronnie_Best@usgs.gov; Burns, Rebecca E.; Atkins Global - North America; Rebecca.Burns@atkinsglobal.com; Gray, Susan; South Florida Water Management District; sgray@sfwmd.gov; Harwell, Matthew C.; U.S. Environmental Protection Agency; Harwell.Matthew@epamail.epa.gov; Hines, Eliza B.; U.S. Fish and Wildlife Service; Eliza_Hines@fws.gov; McLean, Agnes R.; Everglades National Park ; Agnes_McLean@nps.gov; St. Clair, Tom; RESPEC; Tom.stclair@respec.com; Traxler, Steve; U.S. Fish and Wildlife Service; Steve_Traxler@fws.gov; Vearil, James W.; U.S. Army Corps of Engineers; James.W.Vearil@usace.army.mil.
Although few successful examples of large-scale adaptive management applications are available to ecosystem restoration scientists and managers, examining where and how the components of an adaptive management program have been successfully implemented yields insight into what approaches have and have not worked. We document five key lessons learned during the decade-long development and implementation of the Comprehensive Everglades Restoration Plan (CERP) Collaborative Adaptive Management Program that might be useful to other adaptive management practitioners. First, legislative and regulatory authorities that require the development of an adaptive management program are necessary to maintain funding and support to set up and implement adaptive...
Tipo: Peer-Reviewed article Palavras-chave: Adaptive management; Decision-making; Everglades; Monitoring; Restoration.
Ano: 2013
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Adaptive Management Fitness of Watersheds Ecology and Society
Porzecanski, Ignacio; School of Natural Resources and Environment, University of Florida.; igna@ufl.edu; Saunders, Lynn V. ; H. T. Odum Center for Wetlands Phelps Lab, University of Florida, Gainesville.; saunderslv@gmail.com; Brown, Mark T.; H. T. Odum Center for Wetlands Phelps Lab, University of Florida; mtb@ufl.edu.
Tipo: Peer-Reviewed Insight Palavras-chave: Adaptive Management; Decision-making; Environmental condition; Indicators; Management prescriptions; Watersheds.
Ano: 2012
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VEGETATION INDICES FOR IRRIGATED CORN MONITORING REA
Alvino,Francisco C. G.; Aleman,Catariny C.; Filgueiras,Roberto; Althoff,Daniel; da Cunha,Fernando F..
ABSTRACT Monitoring of large agricultural lands is often hampered by data collection logistics at field level. To solve such a problem, remote sensing techniques have been used to estimate vegetation indices, which can subsidize crop management decision-making. Therefore, this study aimed to select vegetation indices to detect variability in irrigated corn crops. Data were collected in São Desidério, Bahia State (Brazil), using an OLI sensor (Operational Land Imager) embedded to a Landsat-8 satellite platform. Five corn growing plots under central pivot irrigation were assessed. The following vegetation indices were tested: NDVI (Normalized Difference Vegetation Index), EVI (Enhanced Vegetation Index), SAVI (Soil Adjusted Vegetation Index), GNDVI (Green...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Vegetation cover; Decision-making; Remote sensing.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000300322
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Comment on "Purported flaws in management strategy evaluation: basic problems or misinterpretation?" by Butterworth et al. ArchiMer
Rochet, Marie-joelle; Rice, Jake C..
Simulation-based management strategy evaluation is a valuable tool, when appropriately implemented. Implementation, however, may not always have been appropriate, and some reasons are provided why perhaps there is incomplete faith in certain of its technical aspects, such as knowing the distribution of the parameters of population processes from the information in limited datasets. A management strategy that has been evaluated by simulation should not be used as an "autopilot", because even the most competent of experts can develop autopilots with imperfect and incomplete knowledge of reality, and all information should be incorporated when decisions have to be made.
Tipo: Text Palavras-chave: Decision-making; Distribution models; Management strategy evaluation.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00002/11278/7922.pdf
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The use of ecosystem services valuation in Australian coastal zone management ArchiMer
Marre, Jean-baptiste; Thebaud, Olivier; Pascoe, Sean; Jennings, Sarah; Boncoeur, Jean; Coglan, Louisa.
The use and influence of ecosystem services valuation in management decision-making, particularly as it relates to coastal zone management, remains largely unexplored in the academic literature. A recent Australia-wide survey of decision-makers involved in coastal zone management examined if, how and to what extent economic valuation of coastal and marine ecosystem services is used in, and influences, decision-making in Australia. The survey also identified a set of cases where economic valuation of ecosystem services was used for decision-making, and reasons why economic values may or may not be considered in the decision-making process. This paper details the method and results from this survey. Overall, there is strong empirical evidence that economic...
Tipo: Text Palavras-chave: Coastal zone management; Decision-making; Ecosystem services; Economic valuation.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00257/36812/42022.pdf
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Sampling plan for Thrips (Thysanoptera: Thripidae) on cucumber Neotropical Entomology
Bacci,Leandro; Picanço,Marcelo C.; Moura,Marcelo F.; Semeão,Altair A.; Fernandes,Flávio L.; Morais,Elisangela G.F..
This work determines the best technique, sampling unit and the number of samples to compose a sampling plan for Frankliniella schultzei (Trybom) and Thrips palmi (Karny) (Thysanoptera: Thripidae) on cucumber. The efficacy of three sampling techniques: leaf beating on a plastic tray, direct counting of insects on the lower leaf surface, and whole leaf collection in bags were compared in nine commercial cucumber crops using three sampling units (a leaf from a branch located in the apical, median or basal third of the canopy). The number of samples was determined based on the relative variance and the economic precision for the best technique and sampling unit. The direct counting of insects on the apical third of the plant canopy was the best sampling...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cucumis sativus; Frankliniella schultzei; Thrips palmi; Decision-making; Negative binomial distribution.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2008000500014
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MULTIPLE JOB-HOLDING AMONG U.S. FARM WOMEN: OFF-FARM WORK AND ON-FARM DECISION-MAKING USING A BARGAINING APPROACH AgEcon
Findeis, Jill L.; Swaminathan, Hema.
Participation rates for farm women in off-farm labor markets continue to increase, as does their participation in making major farm decisions such as whether to buy or sell land, adopt a new production practice or invest in farm equipment. Data from the Survey of U.S. Farm Women conducted in 2001 by Penn State in collaboration with researchers at the Economic Research Service and in collaboration with NASS are used to examine the multiple work roles of farm women off the farm and in farming. Descriptive statistics for the results of the 2001 survey are compared to those from the last major survey of U.S. farm women conducted by Rosenfeld in 1980. Then, using data limited to farm couples, models of job choice considering jointness in participation are...
Tipo: Conference Paper or Presentation Palavras-chave: Bargaining models; Multiple job-holding; Decision-making; Intergenerational transfer; Farm women; Off-farm employment; Employment; Labor; Labor and Human Capital.
Ano: 2002 URL: http://purl.umn.edu/19736
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Female Participation in Decision-Making in Agricultural Households in Kenya: Empirical Findings AgEcon
Kiriti, Tabitha; Tisdell, Clement A.; Roy, Kartik C..
Survey data on which this paper is based were collected in a rural district in Kenya between December 2000 and January 2001. The main objective was to identify the factors that determine female participation in household decision-making. Our results suggest that bargaining models and resource theory cannot be applied in a society where customarily determined sex and social stratification systems place males higher than females and determines that only men make major decisions. Our results support the hypothesis that cultural theory is more significant than bargaining models or resource theories in determining women's participation in decision-making in Kenya.
Tipo: Working or Discussion Paper Palavras-chave: Resource theory; Bargaining theory; Cultural theory; Unified household model; Decision-making; Empowerment and entitlement.; Community/Rural/Urban Development; Consumer/Household Economics; Institutional and Behavioral Economics.
Ano: 2001 URL: http://purl.umn.edu/100210
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A marketing-finance approach linking contracts in agricultural channels to shareholder value AgEcon
Pennings, Joost M.E.; Wansink, Brian; Hoffmann, Arvid O.I..
A conceptual marketing-finance framework is proposed which links channel contracting in agriculture and the use of financial facilitating services (e.g., financial derivatives) to (shareholder) value creation. The framework complements existing literature by explicitly including channel contract relationships as market-based assets that can be managed to reduce cash flow volatility and hence increase shareholder value. We show how financial facilitating services (e.g., derivatives) can be used to complement the cash flows components of channel contract relationships thereby further reducing the risk adjusted cost of capital and improving shareholder value. In a field study of producers, wholesalers, and processors, in the potato and meat industry the...
Tipo: Conference Paper or Presentation Palavras-chave: Marketing-finance; Agricultural marketing strategy; Decision-making; Channels; Agribusiness; Agricultural Finance.
Ano: 2011 URL: http://purl.umn.edu/114785
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THE IMPACT OF BOUNDARY ORGANIZATIONS ON DECISION-MAKING UNDER UNCERTAINTY A MULTI-AGENT SIMULATION AgEcon
Boissin, Denis.
Modern environmental issues imply that decision-makers have the capacity to take into account possibly conflicting information from distinct domains, such as science and economics. As the development of technology increases the temporal and spatial scopes of risks, decision-makers can no longer consider economic and scientific information separately but should encourage experts to work together. Boundary organizations, institutions that cross the gap between two different domains, are able to act beyond the boundaries while remaining accountable to each side (Guston, 2001). By encouraging a flow of information across the boundaries, they permit an exchange to take place, while maintaining the authority of each domain (Cash et al., 2003; Clark et al.,...
Tipo: Journal Article Palavras-chave: Decision-making; Opinion; Agent-based simulation; Multi-agent; Boundary organization; Agribusiness; Agricultural and Food Policy; International Development; Production Economics.
Ano: 2009 URL: http://purl.umn.edu/53532
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Constructing a Social Development Network within a Rural Municipal Government in Portugal AgEcon
Koehnen, Timothy; Cristovao, Artur.
In Portugal, an experimental Social Development Network (SDN) programme has been promoted at the national level by the Social Development Institute (SDI). The major operational objective of the SDN is to construct advisory councils and local commis- sions to increase local participation. The advisory council is represented by local de- velopment stakeholders from governmental and non-governmental institutions. These stakeholders define the actions to be taken for the social development agenda in the municipal government. The paper depicts the achievements and inadequacies of this network. In general, the case-study evaluation determines if the network strengthens the social action process in a rural area faced by social constraints,...
Tipo: Journal Article Palavras-chave: Advisory councils; Participation; Empowerment; Decision-making; Governance; Community/Rural/Urban Development.
Ano: 2006 URL: http://purl.umn.edu/44104
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Excluded Losses and the Demand for Insurance (PowerPoint) AgEcon
Meyer, Donald J.; Meyer, Jack.
Tipo: Conference Paper or Presentation Palavras-chave: Risk; Insurance; Decision-making; Risk and Uncertainty; D81.
Ano: 2009 URL: http://purl.umn.edu/48907
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Recap of the 2008 Crop Insurance Year: What Can We Learn from Models? (PowerPoint) AgEcon
Vergara, Oscar; Zuba, Gerhard; Seaquist, Jack.
Tipo: Conference Paper or Presentation Palavras-chave: Crop insurance; Models; Decision-making; Risk and Uncertainty; D81.
Ano: 2009 URL: http://purl.umn.edu/48910
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Controlling Ozone and Fine Particulates: Cost Benefit Analysis with Meteorological Variability AgEcon
Shih, Jhih-Shyang; Bergin, Michelle S.; Krupnick, Alan J.; Russell, Armistead G..
In this paper, we develop an integrated cost-benefit analysis framework for ozone and fine particulate control, accounting for variability and uncertainty. The framework includes air quality simulation, sensitivity analysis, stochastic multi-objective air quality management, and stochastic cost-benefit analysis. This paper has two major contributions. The first is the development of stochastic source-receptor (S-R) coefficient matrices for ozone and fine particulate matter using an advanced air quality simulation model (URM-1ATM) and an efficient sensitivity algorithm (DDM-3D). The second is a demonstration of this framework for alternative ozone and PM2.5 reduction policies. Alternative objectives of the stochastic air quality management model include...
Tipo: Working or Discussion Paper Palavras-chave: Ambient air; Ozone; Particulate matter; Risk management; Public policy; Cost-benefit analysis; Variability and uncertainty; Stochastic simulation; Stochastic multi-objective programming; Decision-making; National Ambient Air Quality Standards; Environmental Economics and Policy; C6; Q2; Q25; Q28.
Ano: 2003 URL: http://purl.umn.edu/10735
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To Trade or Not to Trade? Non-Separable Farm Household Models in Partial and General Equilibrium AgEcon
Lofgren, Hans; Robinson, Sherman.
"January 1999." Includes bibliographical references (p. 11-12). Published as Lofgren, Hans and Sherman Robinson. 1999. Non-separable farm household models in a computable general equilibrium model. American Journal of Agricultural Economics. 81(3): 663-670.
Tipo: Working or Discussion Paper Palavras-chave: Africa; Sub-Saharan -- Economic policy; Microeconomics -- Africa; Sub-Saharan; Decision-making; Households -- Africa; Sub-Saharan; Equilibrium (Economics) -- Models; Consumer/Household Economics.
Ano: 1999 URL: http://purl.umn.edu/97557
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How can Farmer Managerial Capacity Contribute to Improved Farm Performance? A Study of Dairy Farms in Sweden AgEcon
Johansson, Helena.
This paper investigates how managerial capacity aspects influence efficiency of dairy farms in Sweden. Based on non-parametric methods, Tobit and logistic regressions, several managerial capacity aspects are found to influence long and short run input efficiency scores, but to influence output efficiency less. Examples of important aspects are: internal locus of control, positive profitability attitude, profitability perception and participation in study circles. Based on this, a way of supporting dairy farms to become more profitable is to organize educational and discussion clubs where the farmers learn from each other and form professional dairy farm advisors.
Tipo: Conference Paper or Presentation Palavras-chave: Dairy farms; Data envelopment analysis; Decision-making; Efficiency; Logistic regression; Managerial capacity; Tobit Regression; Farm Management; Productivity Analysis.
Ano: 2007 URL: http://purl.umn.edu/9874
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Coordination Strategy Decisions in Sao Paulo's Fresh Produce Markets: An Empirical Validation of the Peterson, Wysocki & Harsh Framework AgEcon
Mainville, Denise Y.; Peterson, H. Christopher.
This paper provides an empirical validation of the Peterson, Wysocki & Harsh (PWH) framework for coordination strategy decisions, drawing evidence from four firms' procurement strategies in São Paulo's fresh produce markets. The results support the hypothesis that the PWH framework provides empirical and theoretical insight into firm managers' coordination decisions. The cases show how asset specificity and complementarity affect the costliness of coordination decisions, how this costliness drives the decision to change coordination strategies, and how feasibility and risk/return criteria also apply. Additional insights into coordination strategy decisions that were generated in applying the framework and their potential relevance to the framework are...
Tipo: Journal Article Palavras-chave: Coordination strategy; Decision-making; Fresh produce; Transaction cost economics; Strategic management; Livestock Production/Industries; Marketing.
Ano: 2006 URL: http://purl.umn.edu/8142
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On the (Mis)Use of Wealth as a Proxy for Risk Aversion (PowerPoint) AgEcon
Bellemare, Marc F.; Brown, Zachary S..
Tipo: Conference Paper or Presentation Palavras-chave: Risk aversion; Risk; Decision-making; Risk and Uncertainty; D81.
Ano: 2009 URL: http://purl.umn.edu/48913
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Indigenous Social Capital in Traditional Agro-Food Marketing Systems: The Role of Trust in Governance Structure Selection in the Philippine Highlands AgEcon
Milagrosa, Aimee; Slangen, Louis H.G..
The decision-making of indigenous Ibaloi and Kankanaey growers in seven highland communities of Benguet, Cordillera region Philippines was captured in three models. The models explain factors affecting their selection of primary transacting partners. The farmers’ three main primary marketing links are commissioners, wholesalers and contractors. Commissioner-led governance structures are market-based and the relationship is motivated by profit. Wholesaler-led governance structures are partly-market and partly-hybrid-based and are characterized by the motivations of profit, relationship and safeguard benefits. Contractor-led transactions are hybrid modes of organization that are motivated strongly by trust. In governance structure selection, farmers attempt...
Tipo: Conference Paper or Presentation Palavras-chave: Social capital; Governance structure; Decision-making; Vegetable marketing; Philippines; Agribusiness; Agricultural and Food Policy.
Ano: 2006 URL: http://purl.umn.edu/7734
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Comparative Performance of Selected Mathematical Programming Models AgEcon
Arriaza Balmón, Manuel; Gomez-Limon, Jose Antonio.
This study compares the predictive performance of several mathematical programming models. Using the cropping patterns, yields and crop gross margins of eighteen farms over a period of five years we compare the models' optimum solutions with observed crop distributions after the Reform of the EU Common Agricultural Policy of 1992. The results show that the best prediction corresponds to a model that includes expected profit and a qualitative measure of crop riskiness. The results suggest that, in order to obtain reliable predictions, the modelling of farmers' responses to policy changes must consider the risk associated with any given cropping pattern. Finally, we test the ability of the proposed model to reproduce the farmers' observed behaviour with...
Tipo: Conference Paper or Presentation Palavras-chave: Model performance; Mathematical programming; Modelling; Decision-making; Resource /Energy Economics and Policy.
Ano: 2002 URL: http://purl.umn.edu/24792
Registros recuperados: 29
Primeira ... 12 ... Última
 

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