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 19 of 19 for “"Sustainable fisheries"”.
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Analysis of Net Primary Production Models and Observations in the Tropical Pacific Ocean and Their Relationship with Fisheries Yield
<p>Primary production regulates fisheries yield, but testing the degree to which it is so is complicated by our limited ability to measure and model net primary production in the ocean. Herein, I analyze primary production and fisheries yields in the tropical Pacific Ocean, and how uncertainties in …
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Using otolith shape and DNA to identify the stock structure of the spotted wolffish (Anarhichas minor) around Iceland
Proper stock identification is a cornerstone of sustainable fisheries management. The spotted wolffish is overfished in Icelandic waters, primarily due to its capture as bycatch in other fisheries. To determine whether one or more stocks of spotted wolffish (Anarhichas minor) inhabit the waters of …
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Preying on the predator : the shark fin controversy
… to control the shark fin market to building sustainable fisheries to promoting synthetic shark fin soup - efforts to address the issue of shark depletion are seemingly endless. And yet despite these efforts, both the market for shark fins and global catch rates have continued unabated. If the …
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Effects of calendar time, temperature and growing degree-day on Pacific Herring (Clupea pallasii) length-at-age
… population and ecosystem studies in addition to sustainable fisheries management and informing fisheries policy. In this study, herring LaA for north coast BC, south coast BC and California (San Francisco Bay) populations were used to estimate how much of the variation is explained by time (year, …
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Hyperspectral Imaging for Evaluation of Herring Stocks caught around Iceland
… of herring stocks is significant for the sustainable fisheries management and the maintenance of the ecosystem balance in Icelandic waters. Norwegian spring-spawning herring (NSSH) and Icelandic summer-spawning herring (ISSH) are morphological alike and share common feeding grounds, …
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The Effectiveness of Periodically-Harvested Closures in Meeting Ecological and Socioeconomic Objectives
<p>Periodically-harvested fisheries closures (PHCs) are a widespread form of community-based marine spatial management used throughout the Indo-Pacific that also is currently being intensively advocated by conservation organizations for supporting productive fisheries and healthy marine ecosystems. …
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Functional connectivity of coral reef fishes in a tropical seascape assessed by compound-specific stable isotope analyses
… likely necessary to promote ecosystem health and sustainable fisheries on coral reefs. This necessitates quantitative assessment of functional connectivity among essential habitats at the seascape level. This thesis presents the development and first application of a method for tracking fish …
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Spatial and Temporal Variation in Growth Rate of Blue Rockfish (Sebastes mystinus) in Nearshore Central California Determined Using a Physiological Biomarker
… and reproduction and, ultimately, for achieving sustainable fisheries. Historically, evaluations of habitat quality have relied heavily on linking spatial variation in fish abundance to environmental parameters such as substrate category, depth, or bathymetry. That approach, however, assumes that …
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Assessing the implementation efficacy of an ecosystem approach to Fisheries management in the South African sardine fishery
An Ecosystem Approach to Fisheries management (EAF) offers a holistic approach for sustainable fisheries management by extending the traditional target resources-orientated management (TROM) to include wider social-ecological dimensions of fisheries. An EAF requires balancing of multiple, often …
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Functional connectivity of coral reef fishes in a tropical seascape assessed by compound-specific stable isotope analyses
… likely necessary to promote ecosystem health and sustainable fisheries on coral reefs. This necessitates quantitative assessment of functional connectivity among essential habitats at the seascape level. This thesis presents the development and first application of a method for tracking fish …
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In what sense a fisheries problem? : negotiating sustainable growth in New Zealand fisheries
… missing in the international literature on fisheries (the firm, region and communities, and territory, resources and markets). This thesis proposes that we must avoid treating quota management systems, individual transferable quota and associated property rights reforms as monolithic. …
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A spark for collective action: Challenges and opportunities for self-governance in temporary fisher-designed Fish Refuges in Mexico
… decades of study, the question of how to achieve sustainable small-scale fisheries is unresolved. Because small-scale fishing is diverse and hard to control, one management approach places fishers at the center of decision-making. Common-pool resource theory has assembled a large body of evidence …
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Environmental changes and regime shift analysis in the southern Benguela using output from earth system models
… Earth's climate, affecting marine ecosystems and fisheries globally. This study focuses on the southern Benguela, an integral region of the southern African Eastern Boundary Upwelling System (EBUS), investigating the potential impacts of climate change on this biologically productive region. …
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Trophic relevance of gelatinous zooplankton for commercial fisheries in the Irish Sea
… factor in their inclusion in ecosystem and fisheries models. Using a multidisciplinary approach, this thesis aimed to provide a balanced understanding of the net impact of jellyfish on fish communities in the Irish Sea, and to provide a means for researchers to do the same in marine systems …
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Pretty good governance: balancing policy drivers and stakeholder interests in developing fisheries ecosystem plans
… goals implicit in an Ecosystem Approach to Fisheries Management (EAFM). The implications of such a gap for fisheries governance are explored. Furthermore an assessment is made of what may be practically achievable in the implementation of an EAFM in fisheries in general and in a case study …
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Probabilistic regional ocean predictions : stochastic fields and optimal planning
… can be input to a technical decision aide for a sustainable fisheries co-management program in India, which has the potential to provide environment friendly livelihoods to millions of marginal fishermen. The risk-optimal path planning equations can be employed in real-time for efficient ship …
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Status and Contribution of Small-scale Fisheries in Menabe, Southwest Madagascar
Small-scale fisheries are critical for food security, nutrition, and livelihoods in Madagascar, yet remain poorly understood due to chronic data deficiency and underreporting. Madagascar’s dispersed and often mobile coastal communities depend heavily on marine resources particularly the Vezo …
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Staff responses to implementing environmentally sustainable change at federal fish hatcheries in BC
… fish hatchery staff regarding environmentally sustainable infrastructure renewal and hatchery operations. Qualitative research was conducted to investigate this phenomenon, using face-to-face interviews with nine hatchery staff across British Columbia. The interviews were audiotaped and …
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Spatial structuring and patterns of connectivity among Antarctic toothfish (Dissostichus mawsoni) stocks in the Southern Ocean: a view through otolith chemistry
An important prerequisite of sustainable fisheries management is knowledge about the spatial structure of fish populations. Such information provides a basis for understanding population dynamics and connectivity as well as posing questions around a speciesˈ resilience to ongoing fishing pressure. …