23 research outputs found
Designing a global assessment of climate change on inland fishes and fisheries: knowns and needs
© 2017, Springer International Publishing Switzerland (outside the USA). To date, there are few comprehensive assessments of how climate change affects inland finfish, fisheries, and aquaculture at a global scale, but one is necessary to identify research needs and commonalities across regions and to help guide decision making and funding priorities. Broadly, the consequences of climate change on inland fishes will impact global food security, the livelihoods of people who depend on inland capture and recreational fisheries. However, understanding how climate change will affect inland fishes and fisheries has lagged behind marine assessments. Building from a North American inland fisheries assessment, we convened an expert panel from seven countries to provide a first-step to a framework for determining how to approach an assessment of how climate change may affect inland fishes, capture fisheries, and aquaculture globally. Starting with the small group helped frame the key questions (e.g., who is the audience? What is the best approach and spatial scale?). Data gaps identified by the group include: the tolerances of inland fisheries to changes in temperature, stream flows, salinity, and other environmental factors linked to climate change, and the adaptive capacity of fishes and fisheries to adjust to these changes. These questions are difficult to address, but long-term and large-scale datasets are becoming more readily available as a means to test hypotheses related to climate change. We hope this perspective will help researchers and decision makers identify research priorities and provide a framework to help sustain inland fish populations and fisheries for the diversity of users around the globe
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44.pdf
The Lake Victoria dagaa constitutes over 38% of the total fish landings from Lake Victoria in Tanzania. The fishery supports a major artisanal fishery in the country, ranking second to the Nile perch in Tanzania. However, the dagaa fishery is associated with high level of post-harvest loss (physical and quality losses) approximately 59%. The overall objective of this study was to propose cost effective management strategy to reduce dagaa post-harvest loss in Tanzania. To meet this objective a cost and benefit analysis was done, to determine whether adopting drying dagaa on racks project will reduce post-harvest loss, and hold positive public value in the future. Two categories of analysis were set i.e. private (individual) and public (Government) for a pilot district (500 fishers), the analyses were divided into five parts: 1). Assessment of all possible dagaa post-harvest losses, 2). Assessment of the cost of reducing the losses, 3). Assessment of the anticipated benefits associated with reducing the losses, 4). Evaluation of costs and benefits to determine net benefit and NPV, 5). A sensitivity analysis. From the analysis it was found that, drying racks project has positive NPV therefore it is worthwhile to be implemented in Tanzania to reduce dagaa post-harvest loss. Also sensitivity analysis indicated that NPV is sensitive and is likely to be affected by changes in sales price, while changes in investment and implementation cost were found to have no impact on NPV. By using drying racks productivity will be increased and provide sustainable livelihood to fishers and as well as increase regional trade and foreign exchange earnings to the government
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44-PP.pdf
The Lake Victoria dagaa constitutes over 38% of the total fish landings from Lake Victoria in Tanzania. The fishery supports a major artisanal fishery in the country, ranking second to the Nile perch in Tanzania. However, the dagaa fishery is associated with high level of post-harvest loss (physical and quality losses) approximately 59%. The overall objective of this study was to propose cost effective management strategy to reduce dagaa post-harvest loss in Tanzania. To meet this objective a cost and benefit analysis was done, to determine whether adopting drying dagaa on racks project will reduce post-harvest loss, and hold positive public value in the future. Two categories of analysis were set i.e. private (individual) and public (Government) for a pilot district (500 fishers), the analyses were divided into five parts: 1). Assessment of all possible dagaa post-harvest losses, 2). Assessment of the cost of reducing the losses, 3). Assessment of the anticipated benefits associated with reducing the losses, 4). Evaluation of costs and benefits to determine net benefit and NPV, 5). A sensitivity analysis. From the analysis it was found that, drying racks project has positive NPV therefore it is worthwhile to be implemented in Tanzania to reduce dagaa post-harvest loss. Also sensitivity analysis indicated that NPV is sensitive and is likely to be affected by changes in sales price, while changes in investment and implementation cost were found to have no impact on NPV. By using drying racks productivity will be increased and provide sustainable livelihood to fishers and as well as increase regional trade and foreign exchange earnings to the government
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Reducing Post-Harvest Losses of the Artisanal Dagaa (Rastrineobola argentea) Fishery in Lake Victoria Tanzania: A Cost Benefit Analysis
The Lake Victoria dagaa constitutes over 38% of the total fish landings from Lake Victoria in Tanzania. The fishery supports a major artisanal fishery in the country, ranking second to the Nile perch in Tanzania. However, the dagaa fishery is associated with high level of post-harvest loss (physical and quality losses) approximately 59%. The overall objective of this study was to propose cost effective management strategy to reduce dagaa post-harvest loss in Tanzania. To meet this objective a cost and benefit analysis was done, to determine whether adopting drying dagaa on racks project will reduce post-harvest loss, and hold positive public value in the future. Two categories of analysis were set i.e. private (individual) and public (Government) for a pilot district (500 fishers), the analyses were divided into five parts: 1). Assessment of all possible dagaa post-harvest losses, 2). Assessment of the cost of reducing the losses, 3). Assessment of the anticipated benefits associated with reducing the losses, 4). Evaluation of costs and benefits to determine net benefit and NPV, 5). A sensitivity analysis. From the analysis it was found that, drying racks project has positive NPV therefore it is worthwhile to be implemented in Tanzania to reduce dagaa post-harvest loss. Also sensitivity analysis indicated that NPV is sensitive and is likely to be affected by changes in sales price, while changes in investment and implementation cost were found to have no impact on NPV. By using drying racks productivity will be increased and provide sustainable livelihood to fishers and as well as increase regional trade and foreign exchange earnings to the government
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The Implications of Illegal, Unreported and Unregulated (IUU) Fishing in Production Cost for Marine Water Small-scale Fisheries: A Case Study of Mafia Island, Mainland Tanzania
This presentation provides an overview of a Special Session presentation held at the IIFET 2016 Scotland conference in July 2016. The registration number and title of the special session were 5334: Improving Food Security and Reducing Poverty through Intra-regional Fish Trade in Sub-Saharan Africa. The session was organized and chaired by Dr. Paul Onyango and the presentation was given by Upendo Hamidu.Proceedings of the Eighteenth Biennial Conference of the International Institute of Fisheries Economics and Trade, held July 11-15, 2016 at Aberdeen Exhibition and Conference Center (AECC), Aberdeen, Scotland, UK