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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.
81

Rainbow trout production and wellbeing in a warm, monomictic impoundment

Glucksman, Joseph, 1941- January 1965 (has links)
No description available.
82

History and evolution of salmon aquaculture siting policy in British Columbia

Galland, Daniel 11 1900 (has links)
Salmon aquaculture is the rearing of salmonids for commercial purposes. These practices are typically carried out in saltwater farms located in coastal waters. The process of siting these facilities requires identifying and selecting areas that are economically, socially and environmentally suitable to locate them. Siting salmon aquaculture facilities has become a controversial resource management issue in British Columbia (B.C.), where distance-based criteria ultimately determine the location of these facilities. This thesis focuses on providing insights and concepts to inform and examine the salmon aquaculture facility siting process in B.C. It is argued that regulatory processes and outcomes in the context of a new industry could respond to mechanisms and factors that shape governmental agendas, illustrating how policy can behave reactively rather than in a precautionary manner. In this case, the outcomes of such reactive policies are reflected in siting criteria that yield implicit environmental and socio-economic disadvantages and tradeoffs. This way, siting criteria derive from expert judgements based on best available information while their associated uncertainties may lead to consider less-desirable sites while underestimating or overestimating risks, and overlooking important regional objectives, cumulative impacts and stakeholder values. The thesis further suggests that the future evolution of the salmon aquaculture facility siting process in B.C. could benefit from siting processes that have already been developed and implemented by other sectors. Different lines of reasoning that deal with processes of public negotiation, analytical decision-making and a systems' approach are explored as ways by which the salmon aquaculture facility siting process could evolve in the future toward creating more comprehensive policy.
83

An analysis of the policy framework for the development of BC salmon farming

Zamluk, Rita Margaret 05 1900 (has links)
Between 1985 and 1995, government agencies and interest groups interacted in a recurring cycle of moratoria and reviews in attempts to resolve a wide variety of environmental, economic and social concerns about salmon farming while making policies to manage the development of the new industry in British Columbia. Using policy community theory, this thesis analyzes how the community members developed the salmon farming policy framework. Then, drawing on the recommendations that were already advanced by aquaculture planners from the early 1980s, the thesis evaluates the policy framework that exists today. Depending upon their power resources and their position within the policy community, the members of the community used different methods to influence the policy process. The members of the sub-government maintained the status quo by using methods such as restricting the access for interest groups to the policy process and limiting the flow of information to the attentive public. The members of the attentive public increased their power by forming coalitions and putting forward a common policy statement to the public and government. Maintaining the status quo became difficult when the New Democratic Party (NDP) government came to power. In revising provincial environmental policies , the NDP changed the relative influence of the government agencies in the sub government. These changes increased conflict among agencies which the government addressed by undertaking an environmental assessment and a public policy review. The B.C. salmon farming policy community is identified as a pressure pluralist community which emerges when jurisdictional responsibility is fragmented among a number of agencies and no mediating mechanism exists to bring together the members of the community. As a result , the community tends to make short term policy and functions without a long term strategy. The thesis concludes with six recommendations designed to increase the access and input of all those who want to participate in the policy process, to address the diversity of issues raised within the policy community, to insure social accountability when interest groups implement policy , and to fill the gaps in the existing policy framework.
84

A design and management approach for horizontally integrated aquaculture systems

Bunting, Stuart W. January 2001 (has links)
This thesis presents an assessment concerning the potential of horizontally integrated aquaculture, with outcomes assessed from a systems-based perspective. A literature review concerning the negative impacts and the limitations of current wastewater management approaches demonstrated that improved strategies are required. Horizontally integrated aquaculture was proposed, where the productive reuse of aquaculture wastewater ameliorates associated negative impacts. A definition for horizontally integrated aquaculture is presented and management strategies that conform to this definition reviewed. The development and application of the ADEPT bioeconornic model to assess the potential of a constructed wetland and trout fishery to treat wastewater from a commercial smolt unit in Scotland is described. The model outputs were tested against observations from commercial facilities operating under comparable conditions to those envisaged for horizontally integrated systems. Findings demonstrated that the modelling approach adopted was generally effective in predicting the composition of wastewater outputs from the farm and the effect of the selected treatment strategies. The model was applied to two further case studies. One assessed the potential of treating wastewater from shrimp farms in Thailand using a constructed mangrove wetland; the second evaluated the possible advantages of a rational design approach to lagoon-based wastewater treatment and reuse, as opposed to a conventional design and traditional practices developed in peri-urban Calcutta.
85

The effects of fishing-induced selection on physiological and life-history traits in Largemouth bass (Micropterus salmoides): a recreational angling perspective /

Redpath, Tara Dawn, January 1900 (has links)
Thesis (M.Sc.) - Carleton University, 2008. / Includes bibliographical references (p. 81-104). Also available in electronic format on the Internet.
86

Analysis of a niche market for farm-raised black sea bass Centropristis striata in North Carolina

Wilde, James D. January 2008 (has links) (PDF)
Thesis (M.S.)--University of North Carolina Wilmington, 2008 / Title from PDF title page (viewed May 26, 2009) Includes bibliographical references (p. 31-33)
87

A nutritional approach to reduce phosphorus pollution in hatchery effluent /

Skonberg, Denise. January 1997 (has links)
Thesis (Ph. D.)--University of Washington, 1997. / Vita. Includes bibliographical references (leaves [164]-176).
88

Étude de la dynamique et de l'efficience d'un système d'élevage mixte de larves d'Hétérobranchus longifilis et de proies dominées par les rotifères (Station d'aquaculture d'Anna, Côte d'Ivoire, Afrique) /

Barro, Malado, January 1995 (has links)
Mémoire (M.Res.Renouv.)--Université du Québec à Chicoutimi, 1995. / Document électronique également accessible en format PDF. CaQCU
89

Relative abundance of farmed Atlantic salmon (Salmo salar L. 1758) juveniles in wild samples from three southwestern New Brunswick rivers /

Stokesbury, Michael J. W. January 1900 (has links) (PDF)
Thesis (M.Sc.)--Acadia University, 2000. / Includes bibliographical references (leaves 38-51). Also available on the Internet via the World Wide Web.
90

Effects of salinity on eggs and yolk-sac larvae of Atlantic cod, Atlantic halibut, haddock and winter flounder /

Powell, Frank, January 1998 (has links)
Thesis (M. Sc.), Memorial University of Newfoundland, 1999. / Bibliography: p. 93-104.

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