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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
51

Introducing co-management at Nitinaht Lake, British Columbia

Joseph, Robert 11 1900 (has links)
Conventional fisheries management has appeared to be at odds with the rights of Native people in the Province of British Columbia. At the same time many Native Bands want to focus on the salmon fishery for economic and cultural revival. The combination of these two factors with growing management problems for the Federal Department of Fisheries and Oceans (DFO) has, for some Bands resulted in efforts toward cooperative management (co-management) of the resource. This thesis analyzes the outcomes of efforts towards co-management of one Band (Ditidaht, at Nitinaht Lake), and evaluates its effectiveness in the early stages of implementation. The thesis includes both a literature review and a case study that describes the Band's efforts at local control in light of their developing property rights, made stronger by recent court cases. It also describes how the DFO has responded to these developments, and how both groups attempted to keep the process directed toward improved fisheries management. The literature review reveals that while there are a number of advantages to the practice of co-management over conventional systems, there also a number of challenges that face local groups attempting this practice. The case study focuses particular attention on how the Ditidaht Band has responded to these challenges. Strategies used by the Ditidaht Band and the DFO, in response to increasing property;. . rights of the Band, to better manage the salmon fishery and to overcome barriers to the exercise of co-management are documented and analyzed. These strategies have generally evolved from concern for the conservation of salmon on the part of both parties. For the Ditidaht these strategies also involved a search for economic development opportunities. Outcomes of the efforts of the two parties are also analyzed in terms of propositions about co-management set out in the literature. It is concluded that the DFO has been reluctant to grant the Ditidaht control over fisheries management functions and appear to have done so done so reluctantly, and only as a result of recent court cases. Because of this Ditidaht input has been kept to a minimum and basically only involves enforcement. As for the Ditidaht Band, it has not taken full advantage of alliances with other parties as a mechanism for enhancing its control over the resource. The Band has also generally not responded to the importance of internal cohesion by establishing a forum for solving disputes over allocation. They have also failed to see the importance of using public concern for conservation as a strategic tool. The case study highlights the importance of looking beyond short-term interests, in this case economic development, in order to become self-sufficient in the long-term.
52

Fishing for justice : an ethical framework for fisheries policies in Canada

Power, Melanie Deanne 05 1900 (has links)
Canadian fisheries are in crisis. On both the Pacific and Atlantic coasts, stories abound of fisheries closures or failures and coastal communities in difficulty. A new approach to fisheries policy is required, one which recognises the intrinsic value of all participants in the fisheries ecosystem and is capable of providing guidance on how to make policy decisions. The principles of environmental ethics provide a framework for developing justice-based fisheries policies. The environmental ethics literature is first explored, with special attention to fisheries issues. From this review, a justice-based framework is identified, in which five types of justice are viewed as pertinent to fisheries concerns. This framework is then translated into an assessment tool, based upon the Rapfish method for rapid appraisal of fisheries and using a set of justice-based ethical criteria. These criteria are evaluated and, through a paired comparison survey, further explored. An assessment of a range of Canadian marine fisheries is conducted using these ethical criteria. Subsequently, a modified Rapfish assessment, using the original criteria supplemented with additional customised criteria, is conducted for Aboriginal fisheries for Pacific salmon in British Columbia. Additionally, a study is conducted which explores preferences regarding the abundance and diversity of fisheries ecosystems. Finally, the commercial fishery for Pacific salmon in British Columbia is presented as a case study. The Rapfish assessment results are presented, and considerations as to how to operationalise just policies for this fishery are suggested. Recommendations include: balancing the composition of the commercial fleet, based upon ecological impacts of the various gear types; encouragement of local stewardship and community involvement; and inclusion of various forms of knowledge in fisheries management and decision-making.
53

Optimal management of a transboundary fishery with specific reference to the Pacific salmon

Tian, Huilan, 1964- January 1998 (has links)
Managing a common property resource, especially one jointly owned by two nations, is a formidable problem as it involves both incentives to cooperate and incentives to cheat. Often conflicts flare up, followed by efforts of reconciliation, which are interrupted again by new conflicts. A classic example of this is the Pacific salmon fishery, which is jointly harvested by the U.S.A and Canada. To understand the nature of this conflict, and to make policy recommendations, a game-theoretic approach is developed in this thesis.
54

Changing relationships to marine resources : the commercial salmon fishery in Old Harbor, Alaska

Robinson, Deborah Butterworth January 1996 (has links)
This thesis presents a case study conducted in 1994 concerning the effects of fishery management regulations on the Native village of Old Harbor, Alaska. Access to the traditional livelihood of harvesting marine resources has profound implications for the sustainability of the economy of Alaska's rural Native villages. The institution of the limited entry system in 1975 caused the transfer of commercial salmon fishing rights away from some Native fishermen and a reduction in local fishing jobs. Although the alternatives may have had similar or worse effects on the village, limited entry is perceived as a major cause of economic and social dysfunction. One of many factors that has integrated remote villages into the global market economy, it has exacerbated the uneven distribution of wealth in the community and contributed to a growing gulf between fishing as a business and a lifestyle.
55

Cost-benefit analysis and valuation uncertainty : empirical contributions and methodological developments of a study on trade-offs between hydropower and wild salmon /

Håkansson, Cecilia, January 2007 (has links)
Thesis (doctoral)--Swedish University of Agricultural Sciences, 2007. / Includes an appendix of three papers and manuscripts, one co-authored with Per-Olov Johansson and Bengt Kriström. A second appendix reprints questionnaire used to elicit data for the three papers. Also issued electronically via World Wide Web in PDF format; online version lacks appendix.
56

Release-recapture models for migration juvenile and adult salmon in the Columbia and Snake Rivers using PIT tag and radiotelemetry data /

Buchanan, Rebecca A. January 2005 (has links)
Thesis (Ph. D.)--University of Washington, 2005. / Vita. Includes bibliographical references (p. 310-318).
57

Introducing co-management at Nitinaht Lake, British Columbia

Joseph, Robert 11 1900 (has links)
Conventional fisheries management has appeared to be at odds with the rights of Native people in the Province of British Columbia. At the same time many Native Bands want to focus on the salmon fishery for economic and cultural revival. The combination of these two factors with growing management problems for the Federal Department of Fisheries and Oceans (DFO) has, for some Bands resulted in efforts toward cooperative management (co-management) of the resource. This thesis analyzes the outcomes of efforts towards co-management of one Band (Ditidaht, at Nitinaht Lake), and evaluates its effectiveness in the early stages of implementation. The thesis includes both a literature review and a case study that describes the Band's efforts at local control in light of their developing property rights, made stronger by recent court cases. It also describes how the DFO has responded to these developments, and how both groups attempted to keep the process directed toward improved fisheries management. The literature review reveals that while there are a number of advantages to the practice of co-management over conventional systems, there also a number of challenges that face local groups attempting this practice. The case study focuses particular attention on how the Ditidaht Band has responded to these challenges. Strategies used by the Ditidaht Band and the DFO, in response to increasing property;. . rights of the Band, to better manage the salmon fishery and to overcome barriers to the exercise of co-management are documented and analyzed. These strategies have generally evolved from concern for the conservation of salmon on the part of both parties. For the Ditidaht these strategies also involved a search for economic development opportunities. Outcomes of the efforts of the two parties are also analyzed in terms of propositions about co-management set out in the literature. It is concluded that the DFO has been reluctant to grant the Ditidaht control over fisheries management functions and appear to have done so done so reluctantly, and only as a result of recent court cases. Because of this Ditidaht input has been kept to a minimum and basically only involves enforcement. As for the Ditidaht Band, it has not taken full advantage of alliances with other parties as a mechanism for enhancing its control over the resource. The Band has also generally not responded to the importance of internal cohesion by establishing a forum for solving disputes over allocation. They have also failed to see the importance of using public concern for conservation as a strategic tool. The case study highlights the importance of looking beyond short-term interests, in this case economic development, in order to become self-sufficient in the long-term. / Applied Science, Faculty of / Community and Regional Planning (SCARP), School of / Graduate
58

Physiological response to challenge tests in six stocks of coho salmon Oncorhynchus kisutch

McGeer, James C. January 1990 (has links)
Coho salmon (Oncorhynchus kisutch) from six hatcheries operated by the Canadian Department of Fisheries and Oceans Salmonid Enhancement Project, were reared in a common facility and then subjected to a series of standardized challenge tests. Results suggest that there are genetically based differences in the response to stressful challenges among stocks of coho salmon from southern British Columbia. The challenge tests were: saltwater (30ppt); saltwater and an increase in temperature (30ppt and 4°C); high pH (9.4 and 10.0); low pH (3.55, 3.65, 3.75 and 4.1); thermal tolerance (1°C/h); and handling (30s netting). The measured parameters were plasma sodium and chloride ion concentrations for the saline and pH challenges, time to dysfunction in the thermal tolerance challenge and plasma glucose concentration in the handling challenge. No differences among stocks were found in responses to the high pH and thermal tolerance challenges. The Chehalis River stock had the smallest plasma ion increase in salt water but showed the largest plasma ion decrease in acidic waters. In some of the low pH challenges the Tenderfoot Creek stock showed less plasma ion loss than other stocks. The stock from Eagle River had the lowest plasma glucose concentration increase during handling challenges. The combined saltwater and temperature increase challenge demonstrated the cumulative effect that stressors can have. Sampling associated with the handling challenges revealed a diurnal fluctuation in resting plasma glucose concentrations. The low pH and handling challenges showed that stock performance and the magnitude of the response observed varied with rearing conditions. Although there was some variation in the magnitude of the stock response to challenges between the two rearing conditions used, differences among stocks were consistent. When the response to all challenges were assembled into a relative challenge response profile (or performance profile), each stock was unique. / Land and Food Systems, Faculty of / Graduate
59

Fishing for justice : an ethical framework for fisheries policies in Canada

Power, Melanie Deanne 05 1900 (has links)
Canadian fisheries are in crisis. On both the Pacific and Atlantic coasts, stories abound of fisheries closures or failures and coastal communities in difficulty. A new approach to fisheries policy is required, one which recognises the intrinsic value of all participants in the fisheries ecosystem and is capable of providing guidance on how to make policy decisions. The principles of environmental ethics provide a framework for developing justice-based fisheries policies. The environmental ethics literature is first explored, with special attention to fisheries issues. From this review, a justice-based framework is identified, in which five types of justice are viewed as pertinent to fisheries concerns. This framework is then translated into an assessment tool, based upon the Rapfish method for rapid appraisal of fisheries and using a set of justice-based ethical criteria. These criteria are evaluated and, through a paired comparison survey, further explored. An assessment of a range of Canadian marine fisheries is conducted using these ethical criteria. Subsequently, a modified Rapfish assessment, using the original criteria supplemented with additional customised criteria, is conducted for Aboriginal fisheries for Pacific salmon in British Columbia. Additionally, a study is conducted which explores preferences regarding the abundance and diversity of fisheries ecosystems. Finally, the commercial fishery for Pacific salmon in British Columbia is presented as a case study. The Rapfish assessment results are presented, and considerations as to how to operationalise just policies for this fishery are suggested. Recommendations include: balancing the composition of the commercial fleet, based upon ecological impacts of the various gear types; encouragement of local stewardship and community involvement; and inclusion of various forms of knowledge in fisheries management and decision-making. / Science, Faculty of / Resources, Environment and Sustainability (IRES), Institute for / Graduate
60

Water quality in the lower Fraser River Basin : a method to estimate the effect of pollution on the size of a salmon run

Brox, Gunter Herbert January 1976 (has links)
Water quality studies conducted in the recent past in the Lower Fraser River Basin indicated that locally some high pollution levels exist. With further urbanization and industrialization of the Vancouver region an increase in waste loadings and a degradation of water quality can be expected if no strict pollution control is applied. Of particular concern are biologically undegradable substances such as heavy metals and poly-chlorinated hydrocarbons. They accumulate in the sediments of the river and the estuary and become concentrated in organisms of the food chain. Pollution is a gradually occurring process. Anticipation of potential problems is important for the decision maker responsible for water quality management. The Fraser River supports one of the largest salmon runs of the world and is abundant with other commercially and recreationally valuable fish. Salmon are very sensitive to pollution and could disappear from the Fraser river system as they already have from many other major rivers if pollution levels become too high. The Fraser River estuary has the function of a bottleneck. Adult salmon enter the river to migrate upstream to their spawning grounds, and juvenile salmon stay in the estuary for a while to acclimatize themselves to the saline environment. In this thesis a method is presented to simulate the effects of potential pollution on the size of a salmon stock. A model which uses data from various life stages of a particular sockeye salmon run in the Fraser system is developed. Uncertainties due to environmental fluctuations are accounted for. Using this model the effects of an increase in mortality rate in two stages of the sockeye salmon life cycle on adult return numbers are studied. The analysis showed that at a certain mortality rate chances are that the stock might not be able to recover. In light of a planned salmon enhancement program to increase salmon stocks in various Pacific rivers, the fact that decreasing water quality could counteract all enhancement efforts should be a warning signal to the decision makers. The development of a water quality index to predict future conditions is recommended and a possible procedure to relate water quality parameters to an increase in mortality rate is sketched out. / Applied Science, Faculty of / Civil Engineering, Department of / Graduate

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