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Registros recuperados: 28
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Agricultural Water Security and Instream Flows for Endangered Salmonids in Coastal California's Watersheds AgEcon
Mezzatesta, Mariano; Newburn, David A.; Brozovic, Nicholas.
Many rural landowners within the Western United States do not have access to a secure water supply provided by a major dam or an irrigation district. Such water users must rely instead on groundwater pumping and/or seasonal water flows from tributaries. Some of these agricultural producers choose to store winter stream flows from tributaries within onsite reservoirs to secure their spring/summer water needs. However, regulatory agencies have increased restrictions on surface water storage and diversions to improve instream flows for endangered salmon, thus reducing water security for many landowners not located along the main stem. The majority of salmon habitat is within the tributaries located throughout a watershed. Most research regarding instream...
Tipo: Conference Paper or Presentation Palavras-chave: Instream flow; Salmon; Endangered species; Water; Watershed; Environmental Economics and Policy.
Ano: 2010 URL: http://purl.umn.edu/61485
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Archaeological Evidence for Resilience of Pacific Northwest Salmon Populations and the Socioecological System over the last ~7,500 years Ecology and Society
Campbell, Sarah K.; Department of Anthropology, Western Washington University; Sarah.Campbell@wwu.edu; Butler, Virginia L.; Department of Anthropology, Portland State University; butlerv@pdx.edu.
Archaeological data on the long history of interaction between indigenous people and salmon have rarely been applied to conservation management. When joined with ethnohistoric records, archaeology provides an alternative conceptual view of the potential for sustainable harvests and can suggest possible social mechanisms for managing human behavior. Review of the ~7,500-year-long fish bone record from two subregions of the Pacific Northwest shows remarkable stability in salmon use. As major changes in the ecological and social system occurred over this lengthy period, persistence in the fishery is not due simply to a lack of perturbation, but rather indicates resilience in the ecological–human system. Of several factors possibly...
Tipo: Peer-Reviewed Reports Palavras-chave: Indigenous resource management; Pacific Northwest; Salmon; Sustainable harvests; Zooarchaeology.
Ano: 2010
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Buyer and Seller Response to an Adverse Food Safety Event: The Case of Frozen Salmon in Alberta AgEcon
Maynard, Leigh J.; Saghaian, Sayed H.; Nickoloff, Megan.
Fish is a low-fat protein source high in omega-3 fatty acids, but in 2004 consumers also heard that farmed salmon had high levels of polychlorinated biphenyl (PCBs). This research evaluated how Canadian consumers and processors reacted to the conflicting health messages. Demand estimates and time-series analysis of 2001-2006 frozen meat scanner data in Alberta, Canada show a significant drop in salmon expenditure share following the PCB finding. The industry responded by launching low-priced wild salmon products, which contributed to significant demand expansion. The analysis illustrates how a food safety threat was averted and even served as a catalyst for growth.
Tipo: Report Palavras-chave: Salmon; Scanner data; Food Safety; Demand; Directed acyclic graphs; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; D12; L15; Q11.
Ano: 2007 URL: http://purl.umn.edu/6832
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Buyer and Seller Responses to an Adverse Food Safety Event: The Case of Frozen Salmon in Alberta AgEcon
Maynard, Leigh J.; Saghaian, Sayed H.; Nickoloff, Megan.
Fish is a low-fat protein source high in omega-3 fatty acids, but in 2004 consumers also heard that farmed salmon had high levels of polychlorinated biphenyl (PCBs). This research evaluated how Canadian consumers and processors reacted to the conflicting health messages. Demand estimates and time-series analysis of 2001-2006 frozen meat scanner data in Alberta, Canada show a significant drop in salmon expenditure share following the PCB finding. The industry responded by launching low-priced wild salmon products, which contributed to significant demand expansion. The analysis illustrates how a food safety threat was averted and even served as a catalyst for growth.
Tipo: Journal Article Palavras-chave: Salmon; Scanner data; Food safety; Demand; Directed acyclic graphs; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; Research Methods/ Statistical Methods; Q10; Q11; Q16; Q22.
Ano: 2008 URL: http://purl.umn.edu/53629
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Can Quality Revitalize the Alaskan Salmon Industry? AgEcon
Babcock, Bruce A.; Weninger, Quinn.
Declining salmon prices, due primarily to expansion of farmed salmon production, have reduced revenues for Alaska's wild salmon fisheries by roughly 62 percent over the past 10 years. One possibility for reversing this trend is to differentiate wild and farmed salmon in consumer markets through quality improvements and marketing. We use a simple conceptual model to highlight the challenges that Alaska's wild salmon industry must overcome before the industry is likely to see significant revenue gains from increased quality. Our tentative conclusion is that product differentiation could increase profits for wild salmon. However, implementation may require significant departures from traditional production and management practices and possibly an amendment to...
Tipo: Working or Discussion Paper Palavras-chave: Product differentiation; Salmon; Quality assurance; Resource /Energy Economics and Policy.
Ano: 2004 URL: http://purl.umn.edu/18469
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Culturally significant fisheries: keystones for management of freshwater social-ecological systems Ecology and Society
Noble, Mae; Fenner School of Environment and Society, The Australian National University; mae.noble@anu.edu.au; Duncan, Phil; Gamilaroi Traditional Owner, NSW Aboriginal Land Council; phil.duncan@alc.org.au; Perry, Darren; Murray Lower Darling Rivers Indigenous Nations; ngintait@gmail.com; Prosper, Kerry; Paq'tnekek Mi'kmaq First Nations; kerryp@paqtnkek.ca; Rose, Denis; Gunditj Mirring Traditional Owners Aboriginal Corporation; Denis@gunditjmirring.com; Schnierer, Stephan; School of Environment, Science and Engineering, Southern Cross University; stephan.schnierer@scu.edu.au; Tipa, Gail; Tipa and Associates Ltd.; gttipa@vodafone.co.nz; Williams, Erica; National Institute of Water and Atmospheric Research; Erica.Williams@niwa.co.nz; Woods, Rene; National Cultural Flows Program; Murray Lower Darling River Indigenous Nations; woodsre83@gmail.com; Pittock, Jamie; Fenner School of Environment and Society, The Australian National University; jamie.pittock@anu.edu.au.
Indigenous peoples of North America, Australia, and New Zealand have a long tradition of harvesting freshwater animals. Over generations of reliance and subsistence harvesting, Indigenous peoples have acquired a profound understanding of these freshwater animals and ecosystems that have become embedded within their cultural identity. We have identified trans-Pacific parallels in the cultural significance of several freshwater animal groups, such as eels, other finfish, bivalves, and crayfish, to Indigenous peoples and their understanding and respect for the freshwater ecosystems on which their community survival depends. In recognizing such cultural connections, we found that non-Indigenous peoples can appreciate the deep significance of freshwater animals...
Tipo: Peer-Reviewed Synthesis Palavras-chave: Adaptive freshwater management; Aquatic resources; Bivalve; Comanagement; Crayfish; Cultural keystone species; Eel; Indigenous ecological knowledge; Indigenous water rights; Lamprey; Salmon; Social-ecological resilience.
Ano: 2016
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DEMAND INTERACTION BETWEEN FARMED SALMON AND WILD CAUGHT FISH IN THE UNITED KINGDOM AgEcon
Fofana, Abdulai; Clayton, Patty.
Demand relationships between salmon and a number of wild-caught whitefish and shellfish species using both single equation models and linearised AIDS system framework. The system is well represented although autocorrelation were found in both approaches but this is less of a problem in the systems approach. A cautious interpretation of the results indicated that salmon had a long-run market relationship with the whitefish species of cod, monkfish, saithe, whiting and plaice and with the shellfish species of mussels, nephrops, scallops and shrimp. These groups contain the main seafood species consumed within the United Kingdom, and therefore should include most potential substitutes for salmon.
Tipo: Working or Discussion Paper Palavras-chave: Demand; Salmon; Whitefish; Shellfish; AIDS; Elasticities; Demand and Price Analysis; Resource /Energy Economics and Policy; C32; C22; D12.
Ano: 2003 URL: http://purl.umn.edu/11828
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Factors in Overcoming Barriers to Implementing Co-management in British Columbia Salmon Fisheries Ecology and Society
Pinkerton, Evelyn; Simon Fraser University; evelyn_pinkerton@sfu.ca.
Ten years of research and efforts to implement co-management in British Columbia fisheries have demonstrated that we lack neither good models nor the political will in communities to design and test local and regional institutions for successful involvement in various aspects of management. The barriers lie rather in the distrust and resistance of management agencies and the lack of broadly organized political support. The nature of the barriers and some of the elements of a successful approach to overcoming them are identified and discussed. The analysis is focused around the barriers encountered by two differently situated fishing communities or regions that have launched conservation initiatives through cooperation between local aboriginal and...
Tipo: Peer-Reviewed Reports Palavras-chave: Aboriginal-nonaboriginal partnerships; Adaptive management; Bottom-up approach; British Columbia; Co-management; Community-based management; Fisheries; Institutional barriers; Onorhynchus spp.; Salmon; Selective fishing; Stewardship..
Ano: 1999
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Grizzly bear monitoring by the Heiltsuk people as a crucible for First Nation conservation practice Ecology and Society
Housty, William G.; Coastwatch Director, QQS Projects Society; william.housty@gmail.com; Noson, Anna; Division of Biological Sciences, University of Montana;; Scoville, Gerald W.; Department of Biological Sciences, Central Washington University;; Boulanger, John; Integrated Ecological Research;; Jeo, Richard M.; The Nature Conservancy; rjeo@tnc.org; Darimont, Chris T.; Department of Geography, University of Victoria; Raincoast Conservation Foundation;; Filardi, Christopher E.; Center for Biodiversity and Conservation, American Museum of Natural History ; filardi@amnh.org.
Guided by deeply held cultural values, First Nations in Canada are rapidly regaining legal authority to manage natural resources. We present a research collaboration among academics, tribal government, provincial and federal government, resource managers, conservation practitioners, and community leaders supporting First Nation resource authority and stewardship. First, we present results from a molecular genetics study of grizzly bears inhabiting an important conservation area within the territory of the Heiltsuk First Nation in coastal British Columbia. Noninvasive hair sampling occurred between 2006 and 2009 in the Koeye watershed, a stronghold for grizzly bears, salmon, and Heiltsuk people. Molecular demographic analyses revealed a regionally...
Tipo: Peer-Reviewed Reports Palavras-chave: Bear population monitoring; British Columbia; Conservation; First Nations science; Grizzly bear; Noninvasive mark-recapture; Salmon; Social and ecological resilience; Traditional stewardship; Values.
Ano: 2014
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Has Country of Origin Labeling Influenced Salmon Consumption? AgEcon
Wozniak, Shawn J..
Country-of-Origin Labeling (COOL) legislation for fish and shellfish was passed as part of the Farm Security and Rural Investment Act of 2002. Farm-raised and wild-caught seafood items caught after December 4, 2004, began COOL in April 4, 2005. COOL requires retailers to display the country of origin on seafood. Using a nonlinear AIDS model the demand for 3 salmon products was estimate--precooked, uncooked fresh, and uncooked frozen. COOL had no significant impact on consumer demand for the three products. The 3 salmon products were all found to be inelastic, but uncooked fresh was found to be more price sensitive than precooked and uncooked frozen salmon.
Tipo: Conference Paper or Presentation Palavras-chave: Salmon; COOL; Country of origin; AIDS; Nonlinear; Agricultural and Food Policy; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; International Relations/Trade.
Ano: 2010 URL: http://purl.umn.edu/56460
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HISTOLOGY OF THE JAW DEFORMATION IN SALMON OF SOUTHERN CHILE International Journal of Morphology
Venegas,Felipe; Montiel,Enrique; Forno,Pablo; Rojas,Mariana.
In adult salmon of the sea centres in southern Chile, a jaw deformation (JD) has been identified. It affects the dental and hyomandibular bones, which bend ventrally up to 90° of their normal position. The deformation affects also the dental articular bone. This pathology is related to weight loss and increased mortality of the salmons. It was empirically postulated that a probable cause for this anomaly was food from vegetal origin in the diet of the fishes (which are carnivores) Therefore, the present work aims at comparing the biostructure of jaw bone of salmons fed either with vegetal (soja and gluten) formulation or animal formulation, mostly fish powder. Fifty specimens were analyzed from Puerto Montt, 35 having JD and 15 normal control....
Tipo: Journal article Palavras-chave: Jaw; Jaw deformation; Histology; Salmon; Salmo salar.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000300005
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Institutions for Managing Resilient Salmon (Oncorhynchus Spp.) Ecosystems: the Role of Incentives and Transaction Costs Ecology and Society
Hanna, Susan S; Oregon State University; susan.hanna@oregonstate.edu.
Institutions are the mechanisms that integrate the human and ecological spheres. This paper discusses the institutional challenge of integrating salmon (Oncorhynchus spp.) ecosystems and human systems in ways that effectively promote resilience. Salmon recovery in the Columbia River Basin demonstrates the challenge. Despite the comprehensive scope of Basin salmon management, it has a number of problems that illustrate the difficulties of designing institutions for ecosystem and human system resilience. The critical elements of salmon ecosystem management are incentives and transaction costs, and these comprise a large piece of missing institutional infrastructure. Once the focus is placed on incentives and costs, a number of different management strategies...
Tipo: Peer-Reviewed Synthesis Palavras-chave: Columbia River Basin; Ecosystems; Human systems; Incentives; Institutions; Resilience; Salmon; Transaction costs.
Ano: 2008
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Local and regional strategies for rebuilding fisheries management institutions in coastal British Columbia: what components of comanagement are most critical? Ecology and Society
Pinkerton, Evelyn; Simon Fraser University; evelyn_pinkerton@sfu.ca; Angel, Eric; Simon Fraser University; eangel@sfu.ca; Ladell, Neil; Simon Fraser University; nladell@sfu.ca; Williams, Percy; Gwayasdums, BC; gwayasdums@hotmail.com; Nicolson, Midori; Land & Marine Resources Director, Dzawadaenuxw First Nation; midorin@telus.net; Thorkelson, Joy; United Fishermen and Allied Workers Union-UNIFOR; ufawupr@citytel.net; Clifton, Henry; Native Brotherhood of British Columbia; buddy_65@hotmail.com.
Aboriginal and nonaboriginal fishing-dependent communities on the coast of British Columbia, Canada, having lost traditional fisheries management institutions along with significant fishing opportunity, are in the process of rebuilding local and regional institutions to allow their survival. Sometimes, the rebuilding effort involves the creation of largely new institutions. It can also involve the reactivation, reinvention, or repositioning of older ones. We consider the aspirations, strategies, and activities of organizations in two regions of the coast involved in two different fisheries: salmon on the north coast and intertidal clams in the Broughton Archipelago. We analyze what the two regions have in common, as well as their differences, to generate...
Tipo: Peer-Reviewed Reports Palavras-chave: Clams; Fisheries comanagement; Necessary conditions; Regional institutions; Salmon.
Ano: 2014
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Measuring Market Power in the UK Retail Salmon Industry AgEcon
Fofana, Abdulai; Jaffry, Shabbar.
This paper presents an investigation into the market structure for three product types of salmon (smoked, fresh and whole salmon) in the UK retail market. Evidence of the potential for market power and pricing conduct is analysed using structural simultaneous system equations based on the Bresnahan (1982) model. The importance of the retail market is recognised given the dominance of supermarket chains which accounted for £1.6 billion sales of seafood and the share of about 87% of all seafood retail sales in 2004 as compared with only 16% in 1988. The results indicate that the system is well represented by the models and that the market is competitive for fresh fillets and whole salmon but retailers exert some market power for smoked salmon. The hypothesis...
Tipo: Working or Discussion Paper Palavras-chave: Market power; Error correction model; Dynamic demand systems; Salmon; Marketing; JEL-1; JEL-J.
Ano: 2006 URL: http://purl.umn.edu/45873
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Measuring Oligopsony Power of UK Salmon Retailers AgEcon
Fofana, Abdulai; Jaffry, Shabbar.
A significant increase of concentration in the UK salmon retail subsector has heightened concerns about retail firms’ ability to exercise market power in the purchase of supplies (oligopsony power). To assess the extent to which retail firms have exercised oligopsony power, we develop a dynamic error correction translog profit function to model the behaviour of retailers in the input market for smoke, fillet and whole salmon. Initial estimates indicated violations of monotonicity and convexity conditions as implied by economic theory. In order to ameliorate the problem, a Bayesian technique was used to impose inequality restrictions to correct the anomaly. The final estimated indices of market power in the models were low and statistically significant but...
Tipo: Working or Discussion Paper Palavras-chave: Salmon; Market power; Error correction model; Translog profit function; Food Security and Poverty; JEL-I; JEL-J.
Ano: 2008 URL: http://purl.umn.edu/61116
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Microbiological quality of salmon (Salmo salar) sold in cities of the state of São Paulo, Brazil BJM
Nespolo,Natália Maramarque; Martineli,Thaís Mioto; Rossi Jr.,Oswaldo Durival.
The present paper evaluated the microbiology of salmon by quantifying mesophilic heterotrophic microorganisms, total and thermotolerant coliforms, and the presence of Vibrio parahaemolyticus, Staphylococcus aureus, Salmonella sp., Escherichia coli and Aeromonas sp. in the meat. This study can provide technical support for the suggestion of a new regulation of a Brazilian legislation through specific microbiological standards concerning the consumption of raw fish. A number of 31 (16 cooled and 15 frozen) samples of salmon were collected in the retail market network of a few cities in the State of São Paulo, Brazil. Results presented populations of mesophilic heterotrophic microorganisms ranging from 1.0 x 10 and 3.9 x 10(6) CFU/g, total and thermotolerant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish; Salmon; Microbiology; Pathogenic bacteria.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000400021
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Modelling Risks in the Salmon Industry and Markets AgEcon
Asheim, Leif Jarle; Lien, Gudbrand D.; Richardson, James W.; Tveteras, Ragnar; Veggeland, Frode.
The paper proposes developing a trade model for salmon to assist in discussions and negotiations of current international salmon trade issues and major risk problems facing the salmon industry. Two modeling approaches are discussed: 1) developing a traditional equilibrium trade programming model designed to maximize total welfare across all model regions by solving for a medium-term price that balances the amount of salmon supplied by the world region to the among processed and consumed by this region; and 2) developing an econometric stochastic simulation model based on linear or non-linear equations. Some disadvantages and weaknesses of the programming model are discussed, whereas the econometric model needs further exploration and consideration. The...
Tipo: Conference Paper or Presentation Palavras-chave: Risks; Salmon; Programming model; Econometric model; International trade; Livestock Production/Industries; C60; C50.
Ano: 2005 URL: http://purl.umn.edu/56000
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None-of-These Bias in Stated Choice Experiments AgEcon
Alfnes, Frode; Steine, Gro.
We conduct a within-sample test of hypothetical bias and parameter equality between a hypothetical stated choice (SC) experiment using pictures and a real choice (RC) experiments using products. With exception of the none-of-these alternative-specific dummy, we cannot reject parameter equality between the two datasets. However, when we estimate the models separately with no parameter restrictions, the SC experiment gave WTP estimates that were approximately 50 percent higher and marginal WTP estimates that were almost two times as high as the corresponding estimates from the RC experiment. However, even though the monetary value of the WTP disparity was large, the disparity between the WTP estimates from the two data sets was not statistically significant.
Tipo: Conference Paper or Presentation Palavras-chave: Choice experiment; Hypothetical bias; Color; Mixed logit; Salmon; Willingness to pay; Consumer/Household Economics; C81; C93; D12; Q22.
Ano: 2005 URL: http://purl.umn.edu/24761
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POST - the Pacific Ocean salmon tracking project ArchiMer
Welch, Dw; Boehlert, Gw; Ward, Br.
For most of history, the ocean has remained nearly opaque to study, and it has been difficult to understand where salmon or other marine animals go or how they use the ocean. This greatly limits the ability of oceanographers and fisheries biologists to improve the management of many marine resources. The technical and scientific basis now exists to track the ocean movements of individual marine fish for months or years at a time. In this article, we review how new technologies might be applied to salmon in particular. Our conclusion is that animals as small as juvenile Pacific salmon can be followed for months to years at sea, and thus over great distances. By identifying the migration pathways for individual salmon and specific populations of Pacific...
Tipo: Text Palavras-chave: Salmon; Archival tags; Acoustic tags; Biotelemetry; Migration.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/00322/43307/42967.pdf
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Respect for Grizzly Bears: an Aboriginal Approach for Co-existence and Resilience Ecology and Society
Clark, Douglas A; Wilfrid Laurier University; University of Alberta; Yukon College; Yale School of Forestry and Environmental Studies; dclark@yukoncollege.yk.ca; Slocombe, D. Scott; Wilfrid Laurier University; sslocomb@wlu.ca.
Aboriginal peoples’ respect for grizzly bear (Ursus arctos) is widely acknowledged, but rarely explored, in wildlife management discourse in northern Canada. Practices of respect expressed toward bears were observed and grouped into four categories: terminology, stories, reciprocity, and ritual. In the southwest Yukon, practices in all four categories form a coherent qualitative resource management system that may enhance the resilience of the bear-human system as a whole. This system also demonstrates the possibility of a previously unrecognized human role in maintaining productive riparian ecosystems and salmon runs, potentially providing a range of valued social-ecological outcomes. Practices of respect hold promise for new strategies to...
Tipo: Peer-Reviewed Reports Palavras-chave: Bear ceremonialism; Champagne and Aishihik First Nations; Inuit; Inuvialuit; Northwest Territories; Nunavut; Resilience; Salmon; Social-ecological system; Southern Tutchone; Traditional ecological knowledge; Ursus arctos; Yukon.
Ano: 2009
Registros recuperados: 28
Primeira ... 12 ... Última
 

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