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Aquatic Commons (37.154 recursos)

The Aquatic Commons is a thematic digital repository covering the natural marine, estuarine /brackish and fresh water environments . It includes all aspects of the science, technology, management and conservation of these environments, their organisms and resources, and the economic, sociological and legal aspects.

Subject = Economics

Mostrando recursos 1 - 20 de 140

  1. Der deutsche Austernmarkt in den Jahren 1989 und 1990

    Neudecker, T.
    Der vorliegende Artikel aktualisiert frühere Informationen zum gleichen Thema (NEUDECKER, 1989a). Alle verwendeten Daten stammen entweder vom Statistischen Bundesamt in Wiesbaden, das sämtliche deutsche Einfuhren registriert, die von den Zolldienststellen erfaßt werden, oder von den deutschen Austernproduzenten selbst.

  2. Sozioökonomischer Vergleich der niedersächsischen und schleswig-holsteinischen Fischereiwirtschaft

    Gubernator, M.
    In der "Ökosystemforschung niedersächsisches Wattenmeer" wird in einem Teilprojekt seit Januar 1993 "Die sozioökonomische Entwicklung der Fischerei im niedersächsischen Wattenmeer und ihr Bezug zu Naturschutzforderungen" untersucht. Im Rahmen dieses Projektes wurde am 19.05.1994 auf dem 4. Wissenschaftlichen Symposium der Ökosystemforschung Wattenmeer in Husum ein Vortrag gehalten, dessen Kurzfassung im folgenden wiedergegeben wird.

  3. A key for the identification of economically important West African marine and freshwater shrimp-like crustaceans

    Okera, W.

  4. Rents drain in fishery: the case of Lake Victoria Nile Perch fishery

    Arnason, Ragnar
    Many fisheries are potentially very valuable. According to a recent report by the World Bank and the FAO (2008), global fisheries rents could be as high as US$ 40-60 billion annually on a sustainable basis. However, according to the report, due to the “common property problem”, most fisheries of the world are severely overexploited and generate no economic rents. The Lake Victoria Nile perch fishery could be among the most valuable fisheries in the world. Unfortunately, also this fishery has fallen prey to the common property problem with excessive fishing effort, dwindling stocks and declining profitability. As a result, there...

  5. The role of women in fisheries activities in some selected fishing villages in the southern zone of Kainji Lake basin

    Ekundayo, T.; Kolo, R.J.
    Questionnaires containing 39 questions were prepared and administered to 50 women in ten fishing villages in the Southern Kainji Lake Basin to assess the level of women participation in fisheries activities. Results showed that 100% of the women interviewed were involved in fisheries activities and the following factors were considered. Age group between 20-30 years was 18%; 31-40 years; 30%; and above 40 years had the highest percentage of 40%. Also 98% of the women involve in fisheries activities were married while only 2% were not married. Muslin women constituted 82% while 18% were Christians. About 70% of Hausas were...

  6. Financial analysis of small-scale fish farming enterprises to alleviate poverty in homestead

    Aiyedun, J.A.
    This paper focuses on the financial analysis involved in setting up of fish farming on a small-scale in a homestead. About 0.5 acres of land was used for the construction of pond which as a stock of Clarias spp/ Heterobranchus spp and Tilapia spp at the ratio of one to three for a period of 12 months. The land/land development cost is N26,500.00, pond construction cost, N35,700.00, equipment cost, N2,650.00 and stock/Input requirement cost N155,727.00 while the revenue from sales is N376,000.00. A cash flow analysis is also calculated for the fish farm, which is N155,423.00 for first year cash...

  7. Occupational practice and problems of artisanal fisherfolk in Oyan dam area of Ogun State

    Awotunde, A.; Kehinde, J.M.A.
    Artisanal Fish Societies constitutes one of the poorest societies in the developing world. Attempts to harness the potentials of such societies have often failed due to the enormity of the problem of poverty. This study was conducted in four major fishing villages namely: Abule Titun, Apojola, Imala Odo and Ibaro in order to investigate the occupational practices and the problems of rural artisanal fisherfolks in Oyam's Dam, area of Ogun State. Eighty respondents were randomly selected among the artisanal fisher folks for interview using interview guide. The findings revealed that 43.8% of the fisherfolks are within active age range of...

  8. Alleviating poverty and enhancing food security through fish production in man-made lakes

    Mustapha, M.K.
    Man-made lakes inhabit diverse species of which the fish fauna constitutes the most targeted species of exploitation. For man-made lakes to serve as means of alleviating poverty an enhancing food security through increased fish production in Nigeria, sound management of the lake is strongly recommended. It will include the maintenance of good water quality, stocking with good species, control of over fishing, conservation of extinction and declining species as well as adequate legislation to regulate fishing activities. Recreational and tourism facilities can also be incorporated along with fish production in these man-made lakes to provide additional income and revenue for...

  9. The role of fishermen cooperative societies in the development of fisheries resources on Kainji Lake basin, Nigeria

    Bako, W.S.; Ahmed, Y.B.
    Field survey was conducted to evaluate the role of fishermen cooperative in the development of fisheries resources in Kainji Lake. The study was conducted with aid of questionnaires administered in five fishing villages namely Monnai, Yuna, Kaya, Malale and Tunga Danbaba. Ten questionnaires were administered in each fishing village majority of the fishermen interviewed are between the ages of 20-40 years. The results of the educational background revealed that 60% of the respondents were knowledgeable only on Quranic education. Majority of the respondents (86%) was members of fishermen cooperative societies. Only 32% of the respondents indicated to have benefited for...

  10. Pathway to poverty alleviation at the fishing communities of Lake Chad basin

    Raji, A.; Omoyeni, B.A.
    Poverty has been variously measured in terms of income, consumption, and access to social and physical infrastructures. It is a multi-component phenomenon that cannot be measured by one single variable. This indicates that poverty alleviation or eradication requires a holistic approach. Because the existing strategies at ensuring poverty alleviation have not made impact at the Lake Chad Basin. Therefore, this study identifies the strategies that are adaptable to the area. Data were obtained on Literacy, income, quality housing, mobility, and access to infrastructure, cultural and socio-economic. The paper develops a pragmatic strategy through which the fishing communities can experience true...

  11. Utilization of some aquatic macrophytes in Nigeria in-land water bodies: a review

    Mohammed, H.A.; Daddy, F.; Adesina, G.O.
    Aquatic vegetation is an essential component of the aquatic ecosystem with both positive and negative implications on the water body. Efforts are always made to curtail the excessive growth of aquatic plants in order to prevent them from becoming a nuisance in the ecosystem. One of the ways of solving such problem is the positive economic use of such plants. Utilization as a method of weed control within the aquatic ecosystem is considered to be one of the safest methods of weed control as this provides the riparian communities double advantages in terms of save environment and personal benefits of...

  12. Potential for sustainable floodplain fisheries development: a case study of Tatabu floodplain

    Daddy, F.; Falaye, A.E.
    This study presents evidence from a case study of an ecological appraisal of Tatabu flood plain aimed at formulation management approaches for the enhancement of the fishing communities social economic and cultural realities. Tabtabu flood plain is located north of Jebba and at high water the ecosystems cover about 700 hectares. Fishing constitutes the principal economic activity of natural fish food and flora (especially phytoplankton and zooplankton) which support and favour the growth of over 26 fish species that belong to 15 families. Among the commercially important species in terms of dominance on percentage weight basis are Mochokidae, Cichlidae, Claridae...

  13. Export potential of ornamental live fishes in Nigeria

    Areola, F.O.
    Nigeria is blessed with an abundant variety of fish species, some of which have been exported over the years. These fish species are taken either from the wild or cultured. Large quantities of fishes and fishery products are exported from Nigeria in different forms and which have been sources of foreign exchange earnings for the Country. An estimate value of exports in the fishery sub-sector stood at approximately U.S. $48.212,070 for shrimps/sole fish/cuttlefish/crabs and over U.S.$500,000 for ornamental live fishes

  14. The role of women in fish processing: handling and marketing in Kainji Lake basin

    Bako, W.S.
    The study assessed the contribution of women in fish handling, processing and marketing in Kainji Lake basin. Structured questionnaires were administered to three fishing villages selected at random. The fishing villages were Monai, Yuna, Fakun, and New Bussa market. The study revealed that women play vital roles in fisheries activities as producers, assistants to men preservers, traders and financiers. The notable fishing activity performed by women is processing right from the moment the boats or canoes land at sites. Women assist in emptying nets, sorting gutting and cleaning the catch. In most cases their activities involved salting smoking and drying...

  15. Evaluation of woman fisherfolks involvement in fisheries activities in Kainji Lake basin

    Bako, W.S.
    The extent of rural women fisherfolks contribution to fisheries was grossly under estimated and certainly under valued. The basis of their involvement in fisheries activities is to make themselves equal partners to men productive and self reliant participants in the process of improving their own and their family living standard and to enable them realize their full potentials. This survey is informed a system of data collection with the aid of questionnaires and analysis. Ninety-six of the questionnaires were administered to women fisher folks in eight fishing communities selected at random. Thirty seven (97) percent of the women fisher folks...

  16. Investigation of nematode Eustrongylides larvae infections in mudfish Clarias gariepinus and C. anguillaris from Bida floodplain of Nigeria

    Ibiwoye, T.I.I.; Sule, A.M.; Okomoda, J.K.; Agbontale, J.J.
    This is the first report and record of the determination whether mudfish Clarias were infected with the larvae of the nematode Eustrongylides. Also, documented the assessment of the socio-economic perceptions of three groups of fisher folks on the economy of infected mudfish Clarias fishing activities. Fifty-six (67.5%) of 83 mudfish Clarias caught by artisanal fisher folks were examined for the presence of the larvae of the nematode Eustrongylides. All the 8 sampled fishing localities in Bida floodplain of Nigeria had a mean intensity and abundance of at least 3 and 1 worm per fish per site, respectively. Two hundred and...

  17. An overview of the challenges and prospects in developing an aquaculture industry in Lagos State, Nigeria

    Fakoya, K.A.; Owodeinde, F.G.; Jimoh, A.A.; Akintola, S.L.
    Macroeconomic growth and the development of sustainable business activities are interrelated. In Lagos State, aquaculture is a marginal economic activity thriving mainly on a semi-intensive level. Notwithstanding the available potentials for the development of successful commercial aquaculture enterprises in the state, the transformation to a full-flagged industry continues to be undetermined by certain critical factors. Feasible development strategies may be sought in increasing all stakeholders' capacity in the formulation of policies, plans and regulations, a complete separation of aquaculture from the capture fisheries in administrative structure and policy; the adoption of precautionary approach; provision of economic incentives to enhance private...

  18. Preliminary investigation into implication of a single cell organism in fish feed bouyancy and flotation

    Falaye, B.A.; Sadiku, S.O.E.; Okaeme, A.N.; Eyo, A.A.
    Two Isocaloric Isoproteic 30% crude protein diets were formulated for Clariid catfish and Tilapia with wheat grain starch (WGS) and cassava tuber starch (CTS) incorporated at 10 percent as binding agents. Saccharomyces cerevisiae was included at 2% as floating additive. The water stability, nutrient retention and flotation of pelleted feeds were observed for 60 minutes. There were generally decreasing trends in stability and retention at increasing time of immersion in water. The lipid retention was higher (P>0.05) than proteins in both diets. WGS diet was better (P>0.05) than CTS diet in flotation, which has attributed to the presence of gluten...

  19. Adoption of simple technologies for poverty alleviation

    Sule, A.M.; Ayanda, J.O.; Olabanji, M.U.
    Several technologies have been disseminated to the rural populace of which few were adoptable while others were above their reaches. The adoption-rejection behaviour of the people of Monai community formed the basis for this study. Twenty women fish processors were interviewed using standard questionnaire. The study discovered that the women fish processors used the new introduced Better Life Programme Banda in rotation for even coverage. The use of new Banda has a positive effect on the quantity of fish processed and income. Additional two basins were processed on weekly basis with an income of N1,000.00 over the previous processing technology....

  20. Poverty alleviation among fishermen within the floodplains of Kaduna River: implication for introducing commercial fish farming at village level in Doko local government area of Niger State, Nigeria

    Yaro, I.; Gana, F.S.
    A diagnostic survey was conducted among the fishermen in six selected villages in Doko Local Government Area of Niger State. One hundred and fifty fishermen were randomly selected and interviewed to find out whether or not they had interest in commercial fish farming aimed at improving their livelihood. The dwindling fish catches in the natural flood plain ponds and Ex-bow Lakes continue to have a serious negative effect on the socio-economic well being of the village communities in question. A break on natural regular annual flooding of the plains had resulted into very low natural fish recruitment. Data analysis using...

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