Thesis (M.Eng.)--Memorial University of Newfoundland, 2003. / Includes bibliographical references.

Thesis (M.S.)--University of Wisconsin--Madison. / Typescript. Title from title screen (viewed Sept. 24, 2007). Includes bibliographical references (leaves 77-78). Online version of the print original.

Thesis (M.S.)--Ohio State University. / Bibliography: leaves 25-27.

Thesis (M.S.)--Boston University

Catch dynamics, fisheries biology and socio-economic dependence are described for the artisanal fishery for Octopus cyanea at three study sites (Kwale. Jibondo, and Mtwara) along the coat of Tanzania. A total of 23,165 octopuses were measured and sexed from 3,514 individual catches. FIShing effort was shown to be 2.9 times greater at Msangamkuu compared to Jibondo and nearly two times more than Kwale. Number of relaxation days between fishing events, when the octopus stock are able to recover through growth and immigration, was shown to be greater at Iibondo than for the other two sites. Marked reductions in catch landings, mean individual weight, catch per unit effort (kg) and size distributions are reported for Msangamkuu and Kwale when compared to Jibondo. Abundance of octopus was however, higher at the former sites most likely in response to predator and competition release. Stock size and biomass (kg) were calculated for Msangamkuu using a De-Lury depletion method and results extrapolated to the other two sites. Despite higher abundance at Msangamkuu and Kwale mean overall biomass (kg) was 36% and 14% respectively lower tban the mean biomass estimate for Jibondo. Spatial comparison of fishing impacts between sites using a surplus production model suggested Jibondo to be more productive and fishing pressure sustainable. In contrast, Msangamkuu was indicated to be seriously overtished and Kwale somewhere in between. Although, Bhattacharya modal progression analyses separated multiple size modes in monthly samples growth analyses were unsuccessful due to the lack of a clear corresponding pattern of modal progression in monthly size distributions. Length weight relationships varied between sites and sexes. All length weight relationships were negative allometric. Size reductions at Kwale and Msangambru may be impacting on reproductive output with a 40% reduction in the number of mature males at Msangamkuu and 24% reduction at Kwale when compared to Jibondo. Fewer mature females were observed at Msangamkuu and Kwale but even at Jibondo mature females accounted for only 2.2% of the catch. Results suggest spawning activity takes place in deeper water ( > 4m) below the fisbed zone. Nonetheless, enough females would have to reach brooding size at each site to contribute to the reproductive stock. Size at first maturity for females was estimated to be 1800g. Only 3.9% of the octopus at Kwale and 1.2% at Msangamkuu weigh more than 1800g compared to 17% at Jibondo. Fecundity was shown to increase with size. Breeding activity is likely to be year round but maturity peaks were evident for June and July and October to November. The den enrichment experiment indicated a clear preference for concrete dens over PVC pipe. Overall density increased by 10% subsequent to den placement but dens were shown in reef areas not to be limiting. The benefit of den enrichment was therefore ambiguous but could be initiated using a phased approach to gauge effectiveness. The artisanal octopus fisheries make an important contnbution to the local economy. population growth and fisher and trader immigrations were noted as the greatest threats to the octopus fishery by fishers. Awareness of relevant marine resource use issues was shown to be high yet enthusiasm for management varied between sites. The first descriptive details of the octopus fauna of Tanzania are provided. Implications for management of the octopus fishery and a series of proposed management actions are provided for discussion between relevant stakeholders.

This thesis has been designed to examine the share system and to study its effects on innovation, employment and income in the British Columbia salmon fishing industry. The approach taken has been that of examining the theoretical basis of the share system and then noting how the system has worked in practice. The share system has demonstrated some notable advantages over a wage system in its approach in providing an incentive for hard work and in the economizing of materials used, Against these advantages must be weighed the heavy burden of risk which is shifted from the capitalist to labour. Share fishermen are not assured that they will earn any income from a particular fishing trip and may, in fact, be forced to bear part of the losses of those ventures which fail. The share system creates a rigidity in the free movement of resources within the fishing industry by requiring that the net proceeds from fishing be divided between the crew and the vessel owner in fixed proportions. The allocation to labour of a fixed percentage of all net income results in the entrepreneur requiring a higher rate of return on his investment than would be the case if he were operating in a freely competitive market, thus in theory the share system would inhibit innovation,, The entrepreneur requires that his investment projects have a sufficient return to repay both his capital and interest after paying a share to labour. The number of licensed fishermen and fishing boats has increased annually since 1951. The opportunity of obtaining a high income which is a feature of the share system is a particular incentive which attracts new recruits into the industry. However, many fishermen fail to remain in the industry due to the low and unstable earnings they experience. The incomes of British Columbia salmon seine fishermen appear, on the average, to be below those offered in alternative occupations, though there are certainly some very high incomes earned by a few fishermen0 The increased employment both of labour and capital can, in the main part, be blamed on the common property feature of sea fisheries. The share system, though playing a part in the total industry, is not the most important variable, A solution to the difficulties that the industry faces can best be sought by changes and adjustments elsewhere. / Arts, Faculty of / Vancouver School of Economics / Graduate

The question of the relationship between society and environment was addressed through the study of a remote fishing village of seven hundred and fifty people. An interdisciplinary approach was adopted in which the demographic, economic and social aspects of the community were investigated. . The integration of the disciplinary perspectives was facilitated by simulation modeling. The population of the village had grown gradually in size since its inception, but a decline occurred in the 1960*s. The migration rate was correlated with declining fish harvests and was concomitant with the expansion of communications with urban centers. A turn-around in migration had recently developed supported by an influx of people from the southern cities. Fishing provided the majority of economic opportunity, followed in importance by logging. A survey was conducted to investigate the costs and revenues of the fishermen of the village. Diversification was found to characterize the local fleet and analysis showed that the rates of return on investment in the current year were egualized between vessel types. Social and cultural features were found to be closely linked to environmental variables. Seasonality in birth rates was related to the pattern of work, loads. Attitudes toward locality among high school youth were studied through a regional survey. The analysis confirmed the hypothesis that there was a greater preference among youth of the village for staying than was indicated in other resource towns of the north Vancouver Island district. A diversity of formal and informal organizations facilitated social integration, though factional divisions and attitude differences toward future development were present. In response to developmental pressures, a realignment of the traditional organizations to focus on regional issues concerned with land and marine resources was taking place. The variable levels and rate parameters of the demographic, economic and social components of the model were specified using static and time series data. Sensitivity analysis to assess the effects of uncertainty, and validation tests against known historical changes were conducted. Forecast scenarios identified the development options under several levels of fish abundance and investment. The weight given to ecological versus economic resource management registered disproportionate effects due to the interaction between investment and migration rates and resource stochasticity. This finding argued against a "golden mean" rule for evaluating policy trade-offs and sugggested the importance of using a dynamic, socio-ecological perspective in designing policies for rural communities. / Graduate and Postdoctoral Studies / Graduate

Thesis (M.A.)--Oregon State University, 2010. / Printout. Includes bibliographical references (leaves 59-61). Also available on the World Wide Web.

Characterization of distinct angler fishing styles (e.g., how, where, and with what) allows resource managers the ability to predict how perceived impacts or modifications to fisheries resources (i.e., decline of fish species population) may impact different user groups. Recreation specialization provides a useful framework for understanding participation diversity among recreationists in terms of unique styles of participation. Bryan suggested that within an activity distinct types of participants exist that demonstrate characteristic styles of participation. Fundamental to Bryan's development of specialization were contextual attributes that characterize participant engagement in a recreation activity. However, advancement in specialization has been accompanied by a departure from Bryan's original conceptualization describing activity context. I revisited how specialization is operationalized and developed a contextual style of participation typology and self-classification measure to investigate displacement and substitution behavior among Texas inshore fishing guides. Data were collected in two separate phases. In 2010, I conducted an exploratory investigation that included eighteen face-to-face, in-depth interviews with key informants spanning the entire coast. In 2011, I conducted a quantitative investigation that included mailing a 12 page self-administered survey to all Texas Parks and Wildlife licensed saltwater fishing guides (n=909). Thematic analysis drawing on grounded theory revealed that the salience of six contextual attributes (i.e., bait type, tackle type, fishing method, casting tactic, water depth, and fish species) that characterized four distinct styles of participation (e.g., Bait, All-purpose, Lure, and Sight-casting Guides). A unidimensional self-classification measure was developed based on my guide typology and discriminant analysis revealed it performed as well as a multidimensional measure of specialization. Ultimately, analysis of variance revealed significant differences existed among self-classification categories with respect to substitution behavior (e.g., targeting alternative species of fish, fishing in another location, and using alternative fishing methods or bait types) due to perceived spotted seatrout declines during 2010. In short, my findings suggest that anglers respond differently due to perceived spotted seatrout declines based on their preferred contextual style of participation. A contextual approach to understanding style of participation provides fisheries managers an effective method for understanding and mitigating social and ecological issues.

Thesis (M. Arch.)--University of Hong Kong, 1996. / Includes special report study entitled: Commercial kitchen design. Includes bibliographical references.