Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 39 for “"fishery management"”.
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Policy, practice and perceptions : understanding governance of aquarium fishing in the Philippines
… to understand and strengthen aquarium fishery management. Participatory techniques with aquarium fishers and government officials explore the de-facto practices in an aquarium fishery, and local perceptions of benefits and legitimacy in fishery management. Policy-practice gaps form as …
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Nahrungsnetzbewirtschaftung in Mittelgebirgstalsperren
… to eutrophic. Although changing the fishery management only by repeated fish stocking, in combination with implementating size and bag limits for recreational fisheries, is thought to have only limited success, we decided to put this type of "Biomanipulation" into practice. …
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Integrating traditional ecological knowledge in South Africa's small-scale fisheries: the Olifants Estuary Gillnet Fishery
… the human dimension into small-scale fishery management is knowledge integration. Through pluralising epistemologies, knowledge integration fosters participative dialogue, improves current knowledge bases, and strengthens management...
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Reassessment of the Red Drum Stock in Mississippi Coastal Waters: The Role of Ages 3-5 Year-Class Fish
… second most targeted marine species. The current Fishery Management Plan of the Gulf of Mexico Fishery Management Council, prohibits harvest of Red Drum in federal waters. Monitoring of the stock in Mississippi state waters occurs at sites that are almost exclusively estuarine, using gear types …
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The effects of a marine reserve on galjoen (Dichistius capensis) at Cape Point, South Africa, and implications for the management of the recreational fishery
… because of their duality as a conservation and fishery management tool, but sometimes the actual effects of an MPA fall short of the expected outcomes. Case-by-case studies are needed to understand what works and what doesn’t and this understanding can then be applied to decision making and …
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Spatial modelling of blue whiting population dynamics in the north-east Atlantic
… has become necessary for developing better fishery management strategies. Observations suggest that changes in recruitment and/or population distributions might be explained by environmental factors and spatial processes. However, it is unclear how these drivers directly affect the …
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Three essays on fisheries economics
… themes of efficiency in fisheries economics and management. The first theme is intertemporal efficiency; by examining fishery management problems within a stochastic bioeconomic model, the tradeoffs between current and future consumption are clear. The second theme explored in this essay is the …
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Capitalization of fishing industry thorugh quota markets
… debates about future of the Icelandic system of fishery management. Recommendations made of the basis of this research are believed to be useful in the policy making process as well as for fishermen community in Russia expecting changes due to the end of quota allocation period in 2018 and a …
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Income and harvest effects of alternative management policies on commercial crab potters in Virginia
In recent years, the blue crab fishery has become the main source of income for Virginia's watermen. This fact, along with growing concerns of overharvesting and uncertainty about the amount of effort in the fishery, has led to calls for more complete data on the fishery. This study examined the …
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Bycatch associated with a horseshoe crab (Limulus polyphemus) trawl survey: identifying species composition and distribution
… of the United States since the 1800s, however a Fishery Management Plan (FMP) was only recently created for this species. To date, there have not been any studies that have attempted to identify or quantify bycatch in the horseshoe crab trawl fishery. A horseshoe crab trawl survey was started in …
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Evidence of Multidecadal Recruitment in the Ocean Quahog, <i>Arctica islandica</i> in the Western Atlantic Ocean
… regarding recruitment, making the sustainable management of this valuable fishery a challenge. The objective of this research was to describe the age structure and growth rates for four populations of ocean quahogs from the mid-Atlantic stock to evaluate long-term recruitment trends. Clams were …
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Overfishing in Senegal: A Deep Dive into the Livelihood of Coastal Communities
… of overfishing on the livelihoods of artisanal fishery workers in Senegal, focusing on the intricate relationship between fishery management, unsustainable fishing practices, and the socio-economic conditions of small-scale fishery labourers. To address this, the study explores three key areas: …
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Sea turtle bycatch by the U.S. Atlantic pelagic longline fishery: A simulation modeling analysis of estimation methods
The U.S. pelagic longline fishery catches 98% of domestic swordfish landings but is also one of the three fisheries most affecting federally protected sea turtles (Crowder and Myers 2001, Witherington et al 2009). Bycatch by fisheries is considered the main anthropogenic threat to sea turtles (NRC …
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Exploring spatial heterogeneity of CPUE year trend and nonstationarity in fisheries stock assessment, an example based on Atlantic Weakfish (Cynoscion regalis)
… to evaluate the stock status and fisheries management plans to provide robust model and management strategies. Atlantic Weakfish (Cynoscion regalis), one important commercial and recreational fish species along the west coast of Atlantic Ocean that was found to be declining in recent years, …
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Growth and mortality of buka fish, lates stappersii (boulenger, 1914) in the southern part of lake Tanganyika, Zambia.
… From these results it is recommended that a fishery management strategy should not redistribute or focus on increasing fishing units in Nsumbu area to those in Mpulungu because this will not result in corresponding catch yields but will only increase the current overexploitation of the stock.
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Growth and mortality of buka fish, lates stappersii (boulenger, 1914) in the southern part of lake Tanganyika, Zambia.
… From these results it is recommended that a fishery management strategy should not redistribute or focus on increasing fishing units in Nsumbu area to those in Mpulungu because this will not result in corresponding catch yields but will only increase the current overexploitation of the stock.
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The Emergence of Ecosystems-Based Fisheries Management from the Groundfish Crisis in New England: An Actor-Network Theory Analysis
… the emergence of ecosystems-based fisheries management (EBFM) for New England's marine fisheries in the context of the "crisis" that is escalating in its groundfish fishery. Close observations of the practices of fisheries scientists in coordination with managers at the New England Fisheries …
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Estimates of length-at-50% maturity of two South African demersal species: Monkfish, Lophius vomerinus, and Kingklip, Genypterus capensis
… are elusive and difficult to study, making their management challenging. South African monkfish, Lophius vomerinus, and kingklip, Genypterus capensis, are two demersal species living off the west and south coast of South Africa. These species are exploited as bycatch in the Hake fisheries, and …
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Bridging the divide : incorporating local ecological knowledge into U.S. natural resource management
For the past 100 years, natural resource management in the United States has reflected a belief that the top-down application of science to predict and control the natural world will, in the words of Gifford Pinchot, the Nation's first head of the U.S. Forest Service, "support the wise use of the …
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Modelling the food web in the Irish Sea in the context of a depleted commercial fish community
… Aiming to instigate an Ecosystem Approach to Fishery Management (EAFM) for the Irish Sea, WKIrish advocated the construction of multi-species models to develop an ecosystem understanding of the drivers of commercial stocks. This thesis describes the development of an Ecopath with Ecosim (EwE) …
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