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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.
31

Studies on freshwater fishery of a city lake

Raji, Aminu January 1989 (has links)
No description available.
32

Fishing strategies of small-scale fishers and their implications for fisheries management

Salas, S. January 2000 (has links) (PDF)
Thesis (Ph.D.)--University of British Columbia, 2000. / Adviser: Tony Pitcher. Includes bibliographical references.
33

Evaluating fish-habitat relations, fish distribution, and effects of dam removal in the Baraboo River, Wisconsin /

Catalano, Matthew J. January 2002 (has links) (PDF)
Thesis (M.S.)--University of Wisconsin--Stevens Point, 2002. / Includes bibliographical references (leaves 99-110).
34

Individual transferable fishery quotas under uncertainty

Kusuda, Hisafumi 11 1900 (has links)
A model of a fishery with an uncertain fish stock is proposed to compare alternative management systems with individual transferable quotas (ITQs). Assumptions of the model include: (1) the fish stock fluctuates randomly year by year; (2) in-season stock depletion is small; (3) the total allowable catch (TAC) set by the quota authorities has a definite relation with the fish stock level; (4) the true value of the stock level is revealed only at the middle of each season, when the authorities revise the TAC; (5) fishers form rational expectations on future quota prices. The principal results are: (a) If fishers are risk-neutral, the share quota (SQ) system and the quantity quota (QQ) system generate the same amount of fishery rent, although the division of the rent between fishers and the authorities under one system is different from the other. If the TAC is proportional to the stock level, the more price-inelastic the demand for fish is, the more likely it is that fishers are better off under the QQ system at the expense of the authorities. (b) A quota tax and a harvest tax that collect the same amount of revenue for the authorities result in the same division of the fishery rent among heterogeneous fishers. The quota tax and the profit tax differ in this respect. Which fishers will prefer a quota tax over a profit tax will depend on fishers' shares of the initial quota endowment and in total inframarginal profits afterward. (c) If fishers are risk-averse, the SQ system and the QQ system are not equivalent in their allocative efficiency. An example shows that the SQ system is potentially better than the QQ system when fishers prefer the latter and the authorities prefer the former. This conclusion has to be modified if risk-neutral traders participate in the quota market
35

What is a narwhal worth? : an analysis of factors driving the narwhal hunt and a critique of tried approaches to hunt management for species conservation

Reeves, Randall R. January 1992 (has links)
The hunting of narwhals (Monodon monoceros) has been an important element in the cultural and economic life of indigenous people in the eastern Canadian Arctic and Greenland for centuries. This dissertation explores factors that have motivated the hunters and ways that non-indigenous forces have intervened to restrict hunting activities. Particular attention is paid to commercial (trade) aspects of the hunt and to how these have developed and changed through time. Concern about narwhal conservation first arose during the late 1960s and early 1970s. This concern has focused on a presumed positive correlation between the monetary value of tusk ivory for export and the intensity of hunting by the Inuit. An idealized model of conflict development and resolution is used to facilitate comparisons among six cases, including bowhead whale (Balaena mysticetus) hunting in Alaska, beluga (Delphinapterus leucas) hunting in southeastern Baffin Island and northern Quebec, dugong (Dugong dugon) hunting in Australia and Papua New Guinea, and narwhal hunting in Canada. These comparisons suggest that the conflict surrounding narwhal-hunt management is in a middle to late phase of development. Also, its commercial dimensions and geographically dispersed markets for products (ivory and maktaq) distinguish the narwhal hunt from the other marine-mammal hunts considered here. The continuing demand for narwhal products necessitates a hunt-management regime that is rooted in scientific knowledge, has legitimacy in Inuit communities, and keeps the kill rate within sustainable bounds.
36

Characteristics and angling desires of western Washington trout anglers, and a simulation of the fishery-management system so as to optimize angler enjoyment.

Braaten, Duane Ole, January 1970 (has links)
Thesis (Ph. D.)--University of Washington. / Bibliography: l. [151]-155.
37

Marine protected areas a tool for fishery management /

Greenville, Jared. January 2007 (has links)
Thesis (Ph. D.)--Faculty of Agriculture, Food & Natural Resources, University of Sydney, 2007. / Title from title screen (viewed on August 9, 2007). Includes graphs, tables. Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the Faculty of Agriculture, Food and Natural Resources. Bibliography: leaves 304-313. Also issued in print.
38

The role of socioeconomic factors in customary coral reef management in Papua New Guinea /

Cinner, Joshua Eli. January 2005 (has links)
Thesis (Ph.D.) - James Cook University, 2005. / Typescript (photocopy). Bibliography: leaves 167-179.
39

Modeling the impacts of area closures on the Hawaii longline fishery a spatial-temporal economic model incorporating fish movement /

Nemoto, Keiichi. January 2002 (has links)
Thesis (Ph. D.)--University of Hawaii at Manoa, 2002. / Includes bibliographical references (leaves 221-228).
40

Economic decisions in quota and lecense fishery management plans /

Freeman, Matthew Alan, January 2009 (has links)
Thesis (Ph.D.) -- University of Rhode Island, 2009. / Typescript. Includes bibliographical references (leaves 105-109).

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