Relevant bibliographies by topics / Fisheries, africa

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Fisheries, africa'

Author: Grafiati
Published: 4 June 2021
Last updated: 30 January 2023

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Journal articles on the topic "Fisheries, africa"

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Bi, Mo, Zhenke Zhang, Xinya Guo, and Lei Wan. "Evaluation of Sustainable Utilization of African Marine Fishery Resources." Fishes 8, no. 1 (December 22, 2022): 4. http://dx.doi.org/10.3390/fishes8010004.

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Sustainable utilization evaluation is the basis for ensuring the sustainable exploitation of fisheries’ resources. This paper explores the changes in the mean trophic level of African marine fish catches during a 70-year period based on the statistical data on marine fisheries’ catches in Africa from 1950–2019, provided by the FAO in, order to determine the sustainable utilization of Africa’s fishery resources. The results indicate that although the marine fishery resources of African coastal countries have great variability, their exploitation has roughly gone through the stages of under-exploitation, rapid exploitation, and over-exploitation. Currently, marine fisheries in North and Central Africa are characterized by sustainable exploitation, while East, West, and Southern Africa are in a state of overfishing. The study implicates that African countries should establish a real-time monitoring system for marine fishery resources as soon as possible in order to dynamically grasp the actual changes in fish community structure due to fishing activities, ensure transparency in management and decision making, enact marine regulations to restrict massive fishing by overseas fleets, issue fisheries licenses cautiously, adopt conservative resource conservation policies, and enforce actions to achieve sustainable fisheries development.
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Kroese, M., and W. H. H. Sauer. "Elasmobranch exploitation in Africa." Marine and Freshwater Research 49, no. 7 (1998): 573. http://dx.doi.org/10.1071/mf97122.

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The impact of fisheries on elasmobranchs in Africa is not well documented. Available data suggest that there are no large shark fishing nations (> 10000 t year-1), reported landings for 1994 being around 39 000 t. This value is believed to be a underestimate, because of a lack of data on catches and landings from the various different fishing methods and the large number of nations fishing in African waters. Existing data are mostly linked to industrial fisheries, although the artisanal sector could be responsible for substantial catches. Landed by-catch and discard rates of elasmobranchs are unknown for most commercial fisheries targeting teleosts. Limited data sources allowed only crude estimates of catch. The artisanal fishery is calculated to land a minimum of 20 000 t of sharks, whereas the industrial trawl sector is likely to catch 23 000 t. A conservative estimate for the African continent and the surrounding islands is ~95 000 t. The quality of catch-and-effort data for both commercial and subsistence fisheries on the African continent needs to be improved, and the by-catch issue should be investigated through trained onboard observers.
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Branch, G. M. "Subsistence fisheries in South Africa: a Preface." South African Journal of Marine Science 24, no. 1 (June 2002): 403–4. http://dx.doi.org/10.2989/025776102784528655.

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Ogutu-Ohwayo, Richard, and John S. Balirwa. "Management challenges of freshwater fisheries in Africa." Lakes & Reservoirs: Research & Management 11, no. 4 (December 2006): 215–26. http://dx.doi.org/10.1111/j.1440-1770.2006.00312.x.

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Sydeman, William J., George L. Hunt, Ellen K. Pikitch, Julia K. Parrish, John F. Piatt, P. Dee Boersma, Les Kaufman, Daniel W. Anderson, Sarah Ann Thompson, and Richard B. Sherley. "South Africa's experimental fisheries closures and recovery of the endangered African penguin." ICES Journal of Marine Science 78, no. 10 (November 16, 2021): 3538–43. http://dx.doi.org/10.1093/icesjms/fsab231.

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Abstract In a scientifically-transformative project, South Africa implemented a decade-long field experiment to understand how fisheries may be affecting its most iconic seabird, the African penguin Spheniscus demersus. This unique effort prohibits the take of anchovy and sardine within relatively small areas around four African penguin breeding colonies, two in the Benguela upwelling ecosystem and two in the adjacent Agulhas region. For the Benguela, fisheries closures within the birds’ primary foraging range increased their breeding productivity and perhaps reduced parental foraging efforts, indicating that the fisheries are competing with the birds for food. Results were less clear for foraging behaviour in the Agulhas, but no data on breeding success were collected there. The African penguin is endangered, its population continues to decline, and fisheries closures have been demonstrated to improve demographic traits that contribute to population growth. Therefore, given the critical status of the species, fisheries closures should be maintained, at least at Dassen Island where the population has great capacity to expand and support other nearby colonies. Continuing or implementing corresponding fisheries closures in the Agulhas region is also warranted, as well as creating and testing the value of pelagic closed areas during the non-breeding season when the penguins disperse widely across these ecosystems. These management actions would increase penguin food supplies and may help to meet societal goals of halting the decline of the penguin population, as well as maintaining the economic and cultural services provided by fisheries and ecotourism.
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Plagányi, Éva E., Rebecca A. Rademeyer, Doug S. Butterworth, Carryn L. Cunningham, and Susan J. Johnston. "Making management procedures operational—innovations implemented in South Africa." ICES Journal of Marine Science 64, no. 4 (May 1, 2007): 626–32. http://dx.doi.org/10.1093/icesjms/fsm043.

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Abstract Plagányi, É. E., Rademeyer, R. A., Butterworth, D. S., Cunningham, C. L., and Johnston, S. J. 2007. Making management procedures operational — innovations implemented in South Africa. – ICES Journal of Marine Science, 64: 626–632. Operational management procedures (OMPs) have become an indispensable fisheries management tool in South Africa in light of their ability to consider the consequences of the main sources of assessment uncertainty. An overview is provided of the MP approaches applied to the major South African fisheries for hake, sardine and anchovy, and west coast rock lobster. As these are among the first OMPs to be implemented worldwide, some for periods longer than 10 y, they provide useful examples of some of the successes and problems encountered with the approach. Particular emphasis is given to some recent innovations and adaptations. These include moves to (i) joint two-species OMPs for the hake and sardine/anchovy resources; (ii) a reference set of weighted operating models for primary testing and tuning in preference to a single model; (iii) consideration of a “research-conditional” approach for hake to allow greater catches in the short term, conditional on research being implemented to resolve a key uncertainty; and (iv) incorporation of some ecosystem considerations by developing appropriate robustness tests (which link with moves towards an ecosystem approach to fisheries). Key lessons gained from experience over the past decade of OMP implementation in South Africa are summarized.
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Cockcroft, Andrew C., and Andrew IL Payne. "A cautious fisheries management policy in South Africa: the fisheries for rock lobster." Marine Policy 23, no. 6 (November 1999): 587–600. http://dx.doi.org/10.1016/s0308-597x(98)00045-1.

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Rose Danielle, Aboua Benié, Kien Kouassi Brahiman, Agbassi Armand, and Kouamélan Essetchi Paul. "PRODUCTION FACTORS OF AN ARTISANAL FISHERY ON A MANMADE LAKE IN COTE D’IVOIRE." International Journal of Engineering Technologies and Management Research 4, no. 12 (February 7, 2020): 93–102. http://dx.doi.org/10.29121/ijetmr.v4.i12.2017.138.

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Fisheries management involves, among other things, knowledge of the actors and the catching gear used. These data are generally absent in the fisheries of Côte d'Ivoire. However, there is a strong fishing activity. To lead this study, surveys were conducted among fishermen and fishery administrators. The study of fishing activity in the area of Dioulabougou (Côte d’Ivoire, West Africa) in the district of Bouaflé done from November 2013 to February 2014 identified 88 fishermen. This population is composed of ivorians (39.77%) and foreigners (60.23%). The fishing activity is led by malians (Bambara ethnic group): 34.1%. Baoulé ethnic group (29.54% of ivorian fishermen) is the greatest ethnic group of ivorians. Two categories of fishermen stand in the fishing activity. We registered professional fishermen whose job is only fishing (84.1%) and professionals with another activity (4.5%). The fishing activity in Dioulabougou is dominated by adult aged more than 45 years (48%). Fishermen are predominantly illiterate at 42.04%. The fishing techniques used at Dioulabougou are conical fishing baskets (mesh and trunk of ronier), bamboo-traps, gillnets, bottom lines and shore seines. The illiterate situation of fishermen isa serious matter for sustainable management on fish’s resources.
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Okeke-Ogbuafor, Nwamaka, Tim Gray, Kelechi Ani, and Selina Stead. "Proposed Solutions to the Problems of the Lake Chad Fisheries: Resilience Lessons for Africa?" Fishes 8, no. 2 (January 20, 2023): 64. http://dx.doi.org/10.3390/fishes8020064.

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Fishing communities in Lake Chad are experiencing humanitarian crises—more than five million people in the region are hungry and malnourished—and fishers are in dire need of improved fisheries management policies. Understanding the fishers’ resilience, and how they perceive their fisheries policies, could provide an opportunity for governments and fisheries managers to refine their policies. The present study, which is based on 38 semi-structured interviews carried out between January and April 2022 on the Nigerian shores of Lake Chad, breaks new ground, firstly by seeking to understand the issues raised by declining fish stocks in Lake Chad from the viewpoints of fishers themselves; and secondly by making use of resilience theory to interpret the fishers’ responses to their situation. Our findings are that the fishers have a surer grasp of the most effective resilience strategies available to them than external bodies; and that the fishers’ adaptive resilience and local knowledge provide a framework for developing smarter fisheries management policies for Lake Chad. This study provides evidence to support recommendations for Africa’s supranational, national and local governments to invest in, and make use of, the fisheries research on the ground to address the problems facing its fisheries, rather than experimenting with seemingly random ideas from across the globe. The Lake Chad fisheries crisis is an extreme case demonstrating the harmful effects of external influences from which the fisheries of other African countries can learn lessons.
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Hoppe, Kirk A., Inge Tvedten, and Bjorn Hersoug. "Fishing for Development: Small-Scale Fisheries in Africa." International Journal of African Historical Studies 27, no. 2 (1994): 445. http://dx.doi.org/10.2307/221067.

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Dissertations / Theses on the topic "Fisheries, africa"

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McCafferty, James Ross. "An assessment of inland fisheries in South Africa using fisheries-dependent and fisheries-independent data sources." Thesis, Rhodes University, 2012. http://hdl.handle.net/10962/d1005072.

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The role of inland fisheries as contributors to local and national economies in developing African countries is well documented. In South Africa, there is increasing interest in inland fisheries as vehicles for achieving national policy objectives including food security, livelihoods provision, poverty alleviation and economic development but there is surprisingly little literature on the history, current status, and potential of inland fishery resources. This lack of knowledge constrains the development of management strategies for ensuring the biological sustainability of these resources and the economic and social sustainability of the people that are dependent on them. In order to contribute to the knowledge base of inland fisheries in South Africa this thesis: (1) presents an exhaustive review of the available literature on inland fisheries in South Africa; (2) describes the organisation of recreational anglers (the primary users of the resource); (3) compiles recreational angling catch records and scientific gill net survey data, and assesses the applicability of these data for providing estimates of fish abundance (catch-per-unit effort [CPUE]); and finally, (4) determines the potential for models of fish abundance using morphometric, edaphic, and climatic factors. The literature review highlighted the data-poor nature of South African inland fisheries. In particular information on harvest rates was lacking. A lack of knowledge regarding different inland fishery sectors, governance systems, and potential user conflicts was also found. Recreational anglers were identified as the dominant user group and catch data from this sector were identified as potential sources of fish abundance and harvest information. Formal freshwater recreational angling in South Africa is a highly organised, multi-faceted activity which is based primarily on angling for non-native species, particularly common carp Cyprinus carpio and largemouth bass Micropterus salmoides. Bank anglers constituted the largest number of formal participants (5 309 anglers affiliated to formal angling organisations) followed by bass anglers (1 184 anglers affiliated to formal angling organisations). The highly structured nature of organised recreational angling and dominant utilisation of inland fisheries resources by this sector illustrated not only the vested interest of anglers in the management and development of inland fisheries but also the role that anglers may play in future decision-making and monitoring through the dissemination of catch data from organised angling events. Generalised linear models (GLMs) and generalised additive models (GAMs) were used to standardise CPUE estimates from bass- and bank angling catch records, which provided the most suitable data, and to determine environmental variables which most influenced capture probabilities and CPUE. Capture probabilities and CPUE for bass were influenced primarily by altitude and conductivity and multiple regression analysis revealed that predictive models incorporating altitude, conductivity, surface area and capacity explained significant (p<0.05) amounts of variability in CPUE (53%), probability of capture (49%) and probability of limit bag (74%). Bank angling CPUE was influenced by conductivity, surface area and rainfall although an insignificant (p>0.05) amount of variability (63%) was explained by a predictive model incorporating these variables as investigations were constrained by small sample sizes and aggregated catch information. Scientific survey data provided multi-species information and highlighted the high proportion of non-native fish species in Eastern Cape impoundments. Gillnet catches were influenced primarily by species composition and were less subject to fluctuations induced by environmental factors. Overall standardised gillnet CPUE was influenced by surface area, conductivity and age of impoundment. Although the model fit was not significant at the p<0.05 level, 23% of the variability in the data was explained by a predictive model incorporating these variables. The presence of species which could be effectively targeted by gillnets was hypothesised to represent the most important factor influencing catch rates. Investigation of factors influencing CPUE in impoundments dominated by Clarias gariepinus and native cyprinids indicated that warmer, younger impoundments and smaller, colder impoundments produced higher catches of C. gariepinus and native cyprinids respectively. A predictive model for C. gariepinus abundance explained a significant amount of variability (77%) in CPUE although the small sample size of impoundments suggests that predictions from this model may not be robust. CPUE of native cyprinids was influenced primarily by the presence of Labeo umbratus and constrained by small sample size of impoundments and the model did not adequately explain the variability in the data (r² = 0.31, p>0.05). These results indicate that angling catch- and scientific survey data can be useful in providing predictions of fish abundance that are biologically realistic. However, more data over a greater spatial scale would allow for more robust predictions of catch rates. This could be achieved through increased monitoring of existing resource users, the creation of a centralised database for catch records from angling competitions, and increased scientific surveys of South African impoundments conducted by a dedicated governmental function.
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Mbane, Nontuthuzelo Nosisa. "The South African marine fisheries policy since 1994." Thesis, Cape Technikon, 2004. http://hdl.handle.net/20.500.11838/1664.

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Dissertation (MTech( Public Management))--Cape Technikon, Cape Town, 2004
Marine resources play a major role in sustaining the economy and social development of the nation and contribute to national economy, to employment and security of the local community. The South African fisheries management was conducted largel)' with political default. This denied most fishers access to marine resources. Since the democratic election of 1994, the government was left with the challenge to re-allocate rights in a way that would ensure that the under-presentation of historical disadvantaged individuals (HDl's) in the fishing industry would be corrected. The laws and regulations related to marine fisheries were also revised. The Marine Living Resources Act, No. 18 of 1998 attempted transformation in the fishing industry but lacked clear guidelines which led to litigation and crises in the fishing industry as many fishers were unhappy with the whole process. Marine fisheries policy was established and published in 1997 to address those historical imbalances by introducing the fishing right system of allocating rights to represent the national demographics of the country. This report seeks to describe the theory of the South African fishing industry, policy developments and the current status of permit allocation in South Africa. It will also examine the effectiveness in the implementation of the marine fisheries policy for South Africa. It will focus on the distribution of marine resources for commercial fishing purposes.
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Hutton, Trevor Patrick. "Fisheries management policy in South Africa : an evaluation of alternative management strategies for the Hake and Linefish fisheries." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0020/NQ56561.pdf.

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Mather, Diarmid John. "Fishing rights, redistribution and policy : the South African commercial T.A.C. fisheries." Thesis, Rhodes University, 2005. http://hdl.handle.net/10962/d1007531.

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The main objective of this thesis is to provide an analysis of the economic logic behind fisheries policy and redistribution in South African. An examination of the institutional and organizational evolution reveals that South African fisheries policy followed the world trend in the movement toward quota management systems. However, it is argued that due to the peculiarities of the Apartheid political system, South Africa developed a unique and persistent structure of individual fishing rights that resulted in a transfer of power from the fisher to monopsonistic, and subsequently vertically integrated, fish processing companies. Problems, however, arose with the need to redistribute fishing rights to previously repressed racial groups. It is proposed that, within a specific form (TAC), the structure of individual fishing rights can be decomposed into four operational rules, namely, the right of participation, asset size, tradability and duration of term. Policy design is restricted to a feasible set of rules that impact on the flexibility of the system, the incentives facing private fishing companies and fishers, the efficiency of the fisheries management plan and finally the effect it has on a redistribution strategy. Within this analytical framework, South Africa's policy yields a very flexible system favourable to monopsonistic industrial organisation. However, by adding a redistribution constraint, this structure has a number of important effects. First, as new quota holders are added the information costs for effective fisheries management increase exponentially. Second, the transaction costs to private fishing companies are increased. Third, only the resource rent is redistributed (weak redistribution). Next, the micro to small vessel fisheries, the medium vessel fisheries and the large vessel fisheries are examined separately. The major aim is to determine, within the available data, the effect that a weak redistribution policy (redistribution of the resource rent), has on strong redistribution (redistribution of fishing capital and skills). The evidence definitely supports the analytical framework and suggests that fundamentally the structure of individual fishing rights, which evolved in response to a monopsonistic industrial organisation during the apartheid era in South Africa, works against strong redistribution. Also, that different fisheries face different constraints and that these should in certain instances be treated separately.
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Ngqongwa, Abongile. "Small-scale fisheries governance in South Africa using information management systems." Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/15586.

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Conventional management approaches, focused primarily on stock status and top-down driven regulatory measures, such as are employed in many commercial fisheries across the globe, have proven to be inadequate in managing small-scale fisheries and have contributed to marginalisation of this sector. In South Africa, small-scale fisheries have been increasingly recognised since the abolishment of Apartheid and the advent of democracy in 1994. Nevertheless, the management approaches implemented have been largely top-down, natural science-driven and single-species approach. South Africa's fishery sector is currently going through a historic moment where all small-scale fishers are awaiting implementation of a new Small-Scale Fisheries Policy that will see it endorsing the holistic, multi-species and people-centred approach and the recognition of local and indigenous knowledge of fisheries and addressing the complex socio-economic needs of the fishers. However, in order to implement this policy using a co-management and EAF approach, Government and fishing communities will need to set up the required information-gathering and monitoring tool that would be in line with the principles and objectives of the South African Small-Scale Fisheries Policy as careful assessment of social and economic outcomes of fisheries policies is required to support and sustain livelihoods of these fishers. A proper information management system (IMS) would further ensure that the new approaches to small-scale fisheries management are practical and effective in managing this sector. In investigating the small-scale fisheries information management system, the researcher conceptualised and designed an IMS and further conducted case studies by analysing and work-shopping results of analysed catch data recorded by an independent service provider to Doringbaai small-scale fishers, and analysed catch data of East Coast Rock Lobster in the Eastern Cape of South Africa. Based on the results of the conceptualised and designed IMS and that of the analysed catch data, it is clear that there is a need for the IMS to be converted into a web-based system and further accommodate more indicators that would assist in equipping fishers and fisheries authorities with relevant decision-making. It is also clear that there is a need for an urgent overhaul in how catch data is gathered and packaged as there were numerous errors in the data that could affect how small-scale fisheries should be managed. One of the interventions urgently needed is implementation of an electronic data capturing and instant synchronisation of data into the IMS which would present live data through a web interface customised per user type. Such tool would improve the current management measures and further contribute to improving governance of small-scale fisheries when the Small-Scale Fisheries Policy is implemented.
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Brouwer, Stephen Leonard. "An assessment of the South African east coast linefishery from Kei Mouth to Stil Bay." Thesis, Rhodes University, 1998. http://hdl.handle.net/10962/d1005076.

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During the period April 1994 and February 1996 as part of an investigation into the national Iinefishery, the east coast shore fishery and the recreational and commercial ski-boat fisheries were surveyed, at eight sites between Kei Mouth in the East and Stil Bay in the West. Roving creel, access point and aerial surveys were used. A questionnaire was developed for each sector to gather data on catch and effort, fisher demographics, economics, fisher attitudes towards, and knowledge of, the current management regulations and assess the efficacy of the fisheries inspectorate. During the access point survey the catch of 3273 fishers was inspected and 1556 interviews were conducted. Questionnaires were conducted on 118 recreational ski-boaters and the catch of 165 boats was inspected. 96 commercial skippers were interviewed and 230 had their catch inspected. Three aerial surveys of the entire area were conducted during which a total of 1067 shore fishers were counted giving a shore fisher density of 0.39 fishers.km⁻¹. The majority (99%) of participants in all sectors of the linefishery were male. The greatest number of participants were white, shore fishery 77% recreational ski-boat 98% commercial skiboat 89%, followed by coloured, asian and black people. To a large extent this reflects the income of various racial groups. Most fishers supported the current linefish management plan. However, when tested on their knowledge of the size limits, bag limits and closed seasons of their target species many shore fishers (59%) did not know them and a high proportion of fishers in all sectors had disobeyed at least one of the regulations (shore 50%, recreational ski-boat 70%, commercial ski-boat 56%). When compared to historical data the present catch per unit effort (CPUE) in all sectors has decreased. Most interviewees in the various sectors did not accept responsibility for the decline in CPUE, but attributed it to three principal reasons vis their perceived direct competitors, trawling and pollution. Analysis of the catch revealed that all sectors were multispecies fisheries, with each sector being characterised by a small number of target species. Catch composition differed significantly between the shore and ski-boat sectors, but there was significant overlap between the two skiboat sectors. Analysis of the catch in comparison to that reported to the National Marine Linefish System (NMLS) revealed that there was a substantial degree of under-reporting. There was little seasonal difference in effort in the shore fishery while the recreational ski-boat effort was highest in the summer and the commercial ski-boat effort was high in the winter. Effort in the shore and recreational ski-boat fisheries was concentrated over weekends while the commercial ski-boat effort was highest during weekdays. Total effort for the entire area was estimated at 903 186 (±1913) fisher days per annum in the shore fishery, 24 357 (±685) recreational ski-boat fisher days and 64 266 (±1686) commercial ski-boat fisher days. Expenditure and capital investment in the various sectors was calculated, as were earnings of the participants in the commercial ski-boat sector. The linefishery in the Eastern Cape was estimated to have a minimum capital investment in excess of R210 million and more than R32 million is spent annually on running costs. The commercial ski-boat fishery directly employed an estimated 3184 people. The economic implications of changes in CPUE for the commercial ski-boat fishery are considered, as are the benefits of a recreational angling licence. Management of the linefishery is discussed in relation to the findings of this study.
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Japp, David William. "An assessment of the South African longline fishery with emphasis on stock integrity of kingklip, Genypterus capensis (Pisces : ophidiidae)." Thesis, Rhodes University, 1989. http://hdl.handle.net/10962/d1004660.

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The South African demersal longline experiment is assessed with emphasis on the target species, kingklip Genypterus capensis. The hypothesis that kingklip on the South African coast comprise a unit stock is tested. Recommendations for the management of the fishery are made. Longlining was found to be commercially viable. Techniques have been developed to target on either kingklip or the Cape hakes, Herluccius capensis and H. paradoxus. Longline fishermen exploit the kingklip spawner stock from August to No v ember by taking advantage of prespawning aggregations on the South-East Coast . Effort switches to the West Coast in late summer and early winter where kingklip are less abundant and a larger proportion of hake is caught. Catch rates of kingklip on the South Coast have declined sharply and the resource there has been exploited at a rate greater than that required to retain 50% of the unexploited biomass . There is a 17,6% probability that the spawner biomass on the South Coast has already been depleted below its pristine level. On the West Coast the catch rates of kingklip are lower than on the South Coast and have not changed significantly, although within the 95% confidence limits there is a possibility that the resource there has also been depleted below 50% of its pristine level. Genypterus capensis on the South African coast comprise a unit stock. Comparison of kingklip morphology using multivariate and discriminant function analysis and of otolith morphology using univariate statistics shows that there are no significant differences between the fish on the West and South Coasts. They are a slow growing species and were aged up to 25 years. Kingklip on the West Coast are smaller and have a lower L~ than those on the South Coast, but this is not a characteristic of discrete stocks. Kingklip on the South Coast mature earlier than those on the West Coast and aggregate to spawn on the South - East Coast in spring. There is no obvious spawning period on the West Coast. It is hypothesized that kingklip spawning on the South-East Coast is in response to favourable environmental conditions that enhances the survival of their eggs and larvae. It is recommended that demersal longlining be established as a permanent kingklip-directed fishery but that effort should not be allowed to increase. The West and South Coasts should be managed .separately. A TAC of 5 OOOt for kingklip should be introduced for 1989 of which 2 OOOt should be allocated to the West Coast and 3 OOOt to the South Coast . A closed season for kingklip from 1 August to 30 September on the South-East Coast is recommended. Hake-directed longlining should not be allowed as its effect on the hake spawner stocks are unknown and could be a potential threat to the stability of the demersal trawl fishery.
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Schön, Pieter-Jan. "An investigation into the influence of the environment on spawning aggregations and jig catches of chokka squid Loligo Vulgaris reynaudii off the south coast of South Africa." Thesis, Rhodes University, 2000. http://hdl.handle.net/10962/d1016369.

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Erratic and highly variable catches in the South African chokka squid Loligo vulgaris reynaudii fishery, cause socio-economic hardship for the industry and uncertainty for resource managers. Catch forecasting can reduce this problem as it is believed that catch variability is strongly influenced by environmental factors. In this study, data were collected at varying temporal and spatial scales. Data for the hourly time-scale study were collected from 1996-1998, aboard commercial vessels, whilst for the longer time-scales, data were extracted for Kromme Bay (a single fishing area) from existing databases (1991-1998) that were comprised of compulsory catch returns and oceanographic data. The environment-catch relationship for chokka squid on the inshore spawning grounds was then investigated using multiple correlation and regression analysis, analysis of variance, contingency table analysis and cross-correlation statistical techniques. This simple, direct, 'black box' statistical approach was relatively successful in developing a predictive capability. On a short time-scale (hourly), the regression model accounted for 32% of the variability in catch, with turbidity the main determinant (13%). On a daily monthly time-scale, the best prediction model was on a monthly scale, accounting for 40% of the variability in catch. The principal determinant, bottom temperature anomaly (11 %), was found to lag one month forward. Seasonal and diel catch variations induced changes in the relative importance of turbidity, water temperature and wind direction on catches. A strong, positive relationship was found between easterly winds (which cause upwelling) and catch, particularly in summer. Catch rates, however, decreased with an increase in turbidity. The correlation between temperature and catch was generally negative, however, higher catches were associated with a temperature range of 13-18°C. Highest catch rates were associated with easterly winds, zero turbidity conditions and sea surface temperatures from 15.0-16.9°C. Selected case studies (in situ observations) suggested that upwelling and turbidity events act as environmental triggers for the initiation or termination of the spawning process, respectively. A holistic approach is required to improve predictive capability of chokka squid abundance. Although short-term predictability remains essential (i.e. hourly-scale), future research should concentrate on long-term prediction models (e.g., monthly time-scales) involving greater spatial variation, which are the most important for management.
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Walmsley, Sarah Ann. "The assessment and management of bycatch and discards in the South African demersal trawl fishery." Thesis, Rhodes University, 2005. http://hdl.handle.net/10962/d1005071.

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Over the past few decades it has become recognised that an ecosystem approach is required to manage world fisheries. Management strategies must ensure that non-target (bycatch) as well as target catches are sustainable. To achieve this, detailed commercial catch and biological information is required. The composition of catches made by trawlers operating off the south and west coasts of South Africa was investigated. Distinct fishing areas were identified on each coast, based on target species and fishing depth. Catch composition differed markedly among the areas defined. Although hake Merluccius sp. dominated South Coast catches, a large proportion of the catch was composed of bycatch. On the West Coast, hake dominated catches and this domination increased with increasing depth. On both coasts approximately 90% of the observed nominal catch was processed and landed. Estimates of annual discards suggested that the fishery discarded 38 thousand tons of fish per annum (16% of the nominal trawl catch). The data also indicated that hake discarding, the capture of linefish and the increased targeting of high value species might be cause for concern. Spatial analysis indicated that a variety of factors such as trawling position, catch size and catch composition affects bycatch dynamics. The monkfish Lophius vomerinus is a common bycatch species that has been increasingly targeted by demersal trawlers. This study showed that L. vomerinus is a slow-growing, long-lived species (West Coast males L∞ = 68.50cm TL, t₀ = -1.69yr, K = 0.10yr⁻¹; West Coast females L∞ = 110.23cm TL, t₀ = -1.54yr, K = 0.05yr⁻¹; South Coast sexes combined L∞ = 70.12cm TL, t₀ = - 0.80yr, K = 0.11yr⁻¹), that matures at approximately 6 years of age. These traits could have serious management implications for the species. Per-recruit analysis suggested that the stock might be overexploited, although further investigation is required to confirm this. Solutions were suggested for each of the concerns raised, taking cognisance of the differences observed between the South and West Coasts and the economic dependence of South Coast companies on bycatch. The needs of future research were considered.
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10

Martin, Lindsay. "Fisheries management, fishing rights and redistribution within the commercial chokka squid fishery of South Africa." Thesis, Rhodes University, 2005. http://hdl.handle.net/10962/d1007500.

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The objective of this thesis is to analyse the management and redistribution policies implemented in the South African squid industry. This is done within the broader context of fisheries policies that have been implemented within the South African fishing industry as the squid industry has developed. The study therefore has an institutional basis, which reviews the development of institutional mechanisms as they have evolved to deal fisheries management problems. These mechanisms (which can either be formal or informal) consist of committees, laws and constitutions that have developed as society has progressed. Probably the most prominent of these, in terms of current fisheries policy, is the Marine Living Resources Act (MLRA) of 1998. The broad policy prescription of the MLRA basically advocates the sustainable utilisation of marine resources while outlining the need to restructure the fishing industry to address historical imbalances and to achieve equity. It is this broad objective that this thesis applies to the squid fishery. The primary means of achieving the above objective, within the squid industry, has been through the reallocation of permit rights. These rights also provide the primary means by which effort is managed. A disruption in the rights allocation process therefore has implications for resource management as well. Permits rights can be described as a form of use right or propertY right. These rights are structured according to their operational-level characteristics, or rules. Changing these rules can thus affect the efficiency or flexibility of a rights based system. This is important because initial reallocation of rights, by the Department of Environmental Affairs and Tourism (DEAT), was based on an incomplete set of rights. This partly led to the failure of early redistribution attempts resulting in a "paper permit" market. Nevertheless, this thesis argues that redistribution attempts were based on ill-defined criteria that contributed to the failure described above. In addition to this the method through which redistribution was attempted is also questionable. This can be described as a weak redistribution strategy that did not account for all equity criteria (i.e. factors like capital ownership, employment or relative income levels). This thesis thus recommends, among other things, that an incentive based rights system be adopted and that the design of this system correctly caters of the operational-level rules mentioned above. In addition to this a strong redistribution, based on fishing capital, ownership, income and the transfer of skills, should be implemented.
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Books on the topic "Fisheries, africa"

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A, Neiland, Béné Christophe, and Food and Agriculture Organization of the United Nations., eds. Poverty and small-scale fisheries in West Africa. Rome: Food and Agriculture Organization of the United Nations, 2004.

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Neiland, Arthur E., and Christophe Béné, eds. Poverty and Small-scale Fisheries in West Africa. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-94-017-2736-5.

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Agency, NEPAD Planning and Coordinating. Development aid for fisheries in Africa: Setting out key principles for fisheries governance reforms. [Johannesburg]: NEPAD, 2011.

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Hoorweg, Jan. Artisanal fishers on the Kenyan coast: Household livelihoods and marine resource management. Leiden: Brill, 2009.

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Hoorweg, Jan. Artisanal fishers on the Kenyan coast: Household livelihoods and marine resource management. Leiden: Brill, 2009.

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Barasa, Wangila, and Degen A. Allan 1946-, eds. Artisanal fishers on the Kenyan coast: Household livelihoods and marine resource management. Leiden: Brill, 2009.

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Hoorweg, Jan. Artisanal fishers on the Kenyan coast: Household livelihoods and marine resource management. Leiden: Brill, 2009.

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Sizani, Richard Khaliphile. Selected aspects of the South African fisheries policy. [Cape Town]: Institute of Marine Law, University of Cape Town, 1991.

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Marshall, B. E. Small water bodies and their fisheries in southern Africa. Rome: Food and Agriculture Organization of the United Nations, 1994.

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Commonwealth, Consultative Workshop on Village Level Aquaculture Development in Africa (1985 Freetown Sierra Leone). Village level aquaculture development in Africa: Proceedings. London: Food Production and Rural Development Division Commonwealth Secretariat, 1988.

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Book chapters on the topic "Fisheries, africa"

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Marshall, Brian E. "Inland fisheries of tropical Africa." In Freshwater Fisheries Ecology, 349–62. Chichester, UK: John Wiley & Sons, Ltd, 2015. http://dx.doi.org/10.1002/9781118394380.ch28.

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Augustyn, Johann, Andrew Cockcroft, Sven Kerwath, Stephen Lamberth, Jean Githaiga-Mwicigi, Grant Pitcher, Michael Roberts, Carl van der Lingen, and Lutz Auerswald. "South Africa." In Climate Change Impacts on Fisheries and Aquaculture, 479–522. Chichester, UK: John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119154051.ch15.

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Weyl, Olaf L. F., and Paul D. Cowley. "Fisheries in subtropical and temperate regions of Africa." In Freshwater Fisheries Ecology, 241–55. Chichester, UK: John Wiley & Sons, Ltd, 2015. http://dx.doi.org/10.1002/9781118394380.ch21.

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Allanson, B. R., R. C. Hart, J. H. O’Keeffe, and R. D. Robarts. "Fish and fisheries." In Inland Waters of Southern Africa: An Ecological Perspective, 375–86. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-2382-9_14.

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Masumbuko, Bora, Moctar Bâ, P. Morand, P. Chavance, and Pierre Failler. "Scientific Advice for Fisheries Management in West Africa in the Context of Global Change." In World Fisheries, 151–67. Oxford, UK: Wiley-Blackwell, 2011. http://dx.doi.org/10.1002/9781444392241.ch9.

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Brummett, Randall. "Sustainable Fisheries Management Case Study (Africa)." In The Wetland Book, 1–5. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-007-6172-8_204-1.

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Brummett, Randall. "Sustainable Fisheries Management Case Study (Africa)." In The Wetland Book, 1053–57. Dordrecht: Springer Netherlands, 2018. http://dx.doi.org/10.1007/978-90-481-9659-3_204.

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Cochrane, Kevern L., and Andrew I. L. Payne. "People, purses and power: developing fisheries policy for the new South Africa." In Reinventing Fisheries Management, 73–99. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-4433-9_5.

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Hara, Mafaniso, and Jesper Raakjær Nielsen. "Experiences with Fisheries Co-Management in Africa." In The Fisheries Co-management Experience, 81–97. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-017-3323-6_6.

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Doulman, David J. "Fisheries Management, Poverty Alleviation and the Implementation of the Code of Conduct for Responsible Fisheries." In Poverty and Small-scale Fisheries in West Africa, 209–27. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-94-017-2736-5_12.

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Conference papers on the topic "Fisheries, africa"

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Toral-Granda, M. V., C. L. Moloney, J. M. Harris, and B. Q. Mann. "Ecosystem Impacts of the KwaZulu-Natal Reef Fishery, South Africa: An Exploratory Model." In Ecosystem Approaches for Fisheries Management. Alaska Sea Grant, University of Alaska Fairbanks, 1999. http://dx.doi.org/10.4027/eafm.1999.19.

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Babanawo, R., K. Boakye-Agyei, Y. Amoyaw-Osei, and A. Buchman. "Making an E&P - Fisheries Management Plan Work in Ghana - A Multi-Stakeholder Approach towards Addressing Implementation Challenges." In SPE African Health, Safety, Security, Environment, and Social Responsibility Conference and Exhibition. Society of Petroleum Engineers, 2016. http://dx.doi.org/10.2118/183599-ms.

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Huzayyin, O. A., M. S. El Morsi, M. A. Serag-Eldin, and M. F. El-Bedaiwy. "Prototype for Solar Powered Chip-Ice Production Facility." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-72510.

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Fishermen in highly isolated communities like Shallatin and Halayeb (Southern Egypt) suffer from the fouling of their catch before reaching the markets, due to the prevailing high ambient temperatures. Thus, they resort to block or crushed ice to cool their catch. Since fresh water is unavailable naturally, energy is needed to produce the fresh water from sea water, as well as to operate the chiller for ice production. Hence, employing solar energy as the sole source of energy for manufacturing ice, and producing the ice straight from saline water provides independence from both the electric grid and fresh water resources. A prototype solar powered facility for chip ice production from saline water has been designed, manufactured and erected in Shallatin for this purpose. The prototype, basically an ice production machine provides facilities for fish chilling and refrigeration compartments for vaccines, medicines and food products. The produced ice can be easily transported in to fishing boats in 10 kg plastic boxes that are easy to carry and handle. The prototype design employs many standard parts to cut costs and development time. Adequate ventilation with natural heat leakage to the cool surfaces of equipment (e.g. external surfaces of tanks and their piping) produces the desired room temperature without need for a fan coil unit, as discovered in actual implementation. The design should be applicable to all environments similar to Halayeb and Shellatin, which includes many places on the Red sea in the Gulf area and Africa. It is thus expected to be attractive for commercial exploitation in those places, and offers opportunities for local manufacturing and exportation of industrial products.
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Ewutanure, S. J., and T. E. Binyotubo. "Impacts of Anthropogenic Activities on the Fish Compositions and Diversity of Okerenkoko Estuarine, Delta State, Nigeria." In 27th iSTEAMS-ACity-IEEE International Conference. Society for Multidisciplinary and Advanced Research Techniques - Creative Research Publishers, 2021. http://dx.doi.org/10.22624/aims/abmic2021-v2-p2x.

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Water quality impairment due to anthropogenic activities affects fishery resources. Surface water bodies in the Niger Delta Region of Nigeria are being adversely impacted by the effects of pollution and the destruction of its fishery resources. This study was carried out to assess the impacts of anthropogenic activities on the fish compositions and diversity of Okerenkoko Estuarine, Delta State, Nigeria. Okerenkoko Estuarine (62.79 Km) was spatially stratified into five stations (Z1, Z2, Z3, Z4 and Z5) based on nearness to major anthropogenic activities. Temporal stratification covered June to December. Fish samples were collected for 7 months from each station at the study area with prior arrangement with the fishers. Fishing gears used were Mid – Water Drift Gill Net of mesh sizes 101 mm and 127 mm; Bottom Set Gill Net (50 – 100 m) of mesh size 76 mm, 101 mm and 127 mm; Hook and line (2 – 6 m) of hook sizes No. 5, No. 7, No. 8, No. 9, No. 12 and No. 15; Long Line (300 – 1000 m) of hook sizes No. 7, No. 8. Parameters determined were Numbers of Species, Abundance (%), Simpson and Shannon by using standard procedures. Data were analysed by using Excel (Window 10) and Palaeontological Statistics (Past Version 3.6). A total number of 1261 of fishes and 45 species belonging to 14 families were identified. Highest 383 (30.4 %) and least 152 (12.1 %) number of fishes were obtained in Z5 and Z4, respectively. The most abundant fish species recorded was Sardinella aurita 192 (15.2 %), while the least was Sphyraena afra 1 (0.1 %), respectively. Temporally, the highest 331 (26.2 %) and least 45 (3.6 %) fish species Occurred in December and September. Simpson index ranged from 0.69 to 0.89 in Z1 and Z3, Shannon (1.97, 2.98) occurred in Z4 and Z2, respectively. Fish biodiversity richness (0.69) of Okerenkoko Estuarine could be threatened. Keywords: Water quality, Anthropogenic activities, Fishing gears, Niger Delta and Pollution
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Reports on the topic "Fisheries, africa"

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March, Antaya, and Pierre Failler. Africa offers answers for small-scale fisheries. Edited by Tasha Wibawa. Monash University, June 2022. http://dx.doi.org/10.54377/1ab6-c336.

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Roberts, Paige, Laura Burroughs, and Robert Mazurek. An Exploration of Fisheries Management Agencies in Eastern Africa. One Earth Future Foundation, March 2017. http://dx.doi.org/10.18289/oef.2017.014.

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Annual Review of the International Partnership for African Fisheries Governance and Trade (PAF). Evidence on Demand, October 2012. http://dx.doi.org/10.12774/eod_cs.oct2012.anon.

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