Recursos de colección

Aquatic Commons (36.801 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 = Conservation

Mostrando recursos 1 - 20 de 1.116

  1. Traditional practices of fermenting small rock oysters (Sacosstrea sp.) "Sisi"

    Patosa, Florabelle; Doncillo, Leonora; Diocton, Renato; Gomba, Felisa; Orale, Ronald
    The fermented product from small rock oyster (Sacosstrea sp.) locally known, 'Sisi' is an essential source of livelihood in Zumarraga, Samar. Key informant interviews, ocular observation and focus group discussion (FGD) were conducted to find out the traditional practices used in producing 'Sisi'. Salient findings showed that non-standardized processing of Sisi was practiced, thus limiting the revenues derived from this marginalized industry. Furthermore, 'Sisi' has high ash content with high microbial count which indicates that there are some colonies that grow in the mixture. Hence, there is a need to standardize the methods applied in producing fermented small rock oyster...

  2. Socio-economic profile of the Philippine National Aquasilviculture Program (PNAP) beneficiaries in Jiabong, Samar, Philippines

    Enate, Rholyna T.; Diocton, Renato C.; Macopia, Janet L.
    A total of 37 beneficiaries under the Philippine National Aquasilviculture Program (PNAP) was interviewed using the structured survey questionnaire of Socioeconomic Monitoring Guidelines for Coastal Managers in Southeast Asia (SocMon SEA). Most of the members of the households are young and in-school. Household heads’ primary occupation is fishing, a shift from mussel farming- the town’s major industry in the past decades. Perceived threat by the beneficiaries is related to the environment specifically typhoon and the problems on waste disposal. It also identified law enforcement as weak leading to dwindling fish catch, mass mortality of mussel, red tide and other problems...

  3. Small-scale fishing in Central American indigenous people: governance, tenure and sustainable management of marine resources

    This research develops four case studies on small-scale fisheries in Central America located within indigenous territories. The ngöbe Bugle Conte Burica Territory in the south of Costa Rica, the Garífuna territory in nueva Armenia Honduras, the Rama territory in Nicaragua and the ngöbe Bugle territory in Bocas del Toro, Panamá. This is one of the first studies focusing on indigenous territories, artisanal fisheries and SSF guidelines. The cases are a first approach to discussing and analyzing relevant social and human rights issues related to conservation of marine resources and fisheries management in these territories. The cases discussed between other issues...

  4. Detrimental human activities in critical fish habitats such as breeding and nursery zones

    Kamira, B.
    The poster explains human activties carried out in critical fish habitats such as breeding and nursery zones.

  5. Conservation of aquatic biodiversity

    Mbabazi, D.; Ndawula, L.M.; Namulemo, G.
    Uganda is rich in aquatic resources. Up to 17 % of the country's surface area is covered by Aquatic systems comprising five major lakes; Victoria, Albert, Kyoga, Edward, George, about 160 minor lakes, an extensive river and stream system, dams and ponds. These aquatic systems are associated with extensive swamps

  6. Genetic viability of Nabugabo lakes (LVR satellite lakes) fish species

    Mwanja, W.W.
    Natural populations of fish species in Lake Victoria Region (LVR) have under gone dramatic changes including severe reduction in sizes, division of original stocks into disjunct subunits, and segregation into several isolated population units either within a single water body or even worse into separate waters. In addition, these changes have been either preceded or precipitated by introductions of non-indigenous species that out competed the native forms and in case of closely related species genetically swamped them through hybridisation. The latter is especially the case in Nabugabo lakes. Such events lead to fragmentation of populations, which results in reduction in...

  7. The value of Nabugabo lakes in the conservation of Oreochromis esculentus

    Nagayi-Kalule, J.F.; Ogutu-Ohwayo, R.
    The wide-spread impact of exotic fishes especially Oreochromis niloticus and Lates niloticus together with over fishing in the Victoria and Kyoga lake basins during the 1950s and 1960s, caused endemic species such as the previously most important Oreochromis esculentus to become virtually extinct in the two lakes by the 1970s. Based on reports of presence of this native species in some satellite lakes within the two lake basins, a set of satellite lakes in the Victoria basin (Nabugabo lakes: Kayanja and Kayugi), were sampled between 1997-2002 with an objective of assessing their value as conservation sites for O. esculentus. Other...

  8. Nabugabo lakes and their current conservation status

    Namulemo, G.; Mbabazi, D.
    Fish species diversity in Lake Nabugabo, Uganda, has declined following establishment of the introduced fish species in the lake. Most of the native fish species have disappeared and the lake is now dominated by the introduced Nile perch, Lates niloticus and the Nile tilapia Oreochromis niloticus. The dominant native fish species include Synodontis afrofischeri, Schilbe intermedius, Rastrineobola argentea and Brycinussadleri. Some of the native fish species that have disappeared from Lake Nabugabo were reported to occur in lakes Kayugi and Kayanja, which are adjacent to Lake Nabugabo but separated from it by extensive papyrus swamps. The Nabugabo lakes are satellite...

  9. Annual Report of the Game Department for the year ended 31st December, 1947

    ) General (2) Legislation (3) Nets (4) Imports and Exports of Dried Fish (B) Economic:- (I) Lake Victoria (2) Lake Albert (including the Albert Nile (3) Lake Edward and Associated Fisheries (4) Lake Kyoga (5) Minor Lakes, Dams and the Victoria Nile (6) Introductions (7) Fish Transfers (8) Crocodiles:- (C) Angling Trout Nile Perch Barbel Tilapia Variabilis

  10. The potential of Nakivubo swamp (papyrus wetland) in maintaining water quality of inner Murchison bay - Lake Victoria

    Kansiime, F.; Nalubega, M.; Tukahirwa, E.M.; Bugenyi, F.W.B.
    Nakivubo swamp (papyrus wetland) is located in the south east of the city of Kampala, Uganda. This swamp has been receiving waste water from Nakivubo channel for more than two decades. This investigation was aimed at monitoring the level of pollutants (nutrients and faecal coliforms) as the waste water filtrates through the swamp and the flow patterns of waste water through the swamp. From this preliminary investigation it was found out that the waste water is not evenly distributed over the swamp. Also high levels of pollutants seem to filtrate through the swamp and enter Inner Murchison Bay - Lake Victoria....

  11. Methodology for valuing wetlands in Uganda

    Luthiger, B.
    The wetlands in Uganda are undergoing rapid degradation. Swamps provide a habitat for birds, fishes and other animals. They have many ecological functions and, furthermore, supply people with multiple resources, such as reeds, herbs, fish and agricultural products. Although some'uses of wetland are sustainable, others lead to rapid deterioration. The main threat to swamps are human activities. One reason for the progressive destruction of wetlands is that the people may not appreciate the existence of and the treasures represented by wetlands even if they live in arm long distance from them. Another reason is that the two most important user...

  12. Marine Vertebrates and Low Frequency Sound: Technical Report for LFA EIS

    Croll, Donald A.; Tershy, Bernie R.; Acevedo, Alejandro; Levin, Phil
    Over the past 50 years, economic and technological developments have dramatically increased the human contribution to ambient noise in the ocean. The dominant frequencies of most human-made noise in the ocean is in the low-frequency range (defined as sound energy below 1000Hz), and low-frequency sound (LFS) may travel great distances in the ocean due to the unique propagation characteristics of the deep ocean (Munk et al. 1989). For example, in the Northern Hemisphere oceans low-frequency ambient noise levels have increased by as much as 10 dB during the period from 1950 to 1975 (Urick 1986; review by NRC 1994). Shipping...

  13. Attack of the coral eaters

    Surtida, Augusto P.; Ledesma, Edgar T.

  14. SAMUDRA Report No.72, January 2016

  15. Museums, gardens, zoos, and wildlife breeding centers in the Philippines

    Bagarinao, Teodora Uy

  16. Nature parks for environment education and biodiversity in the Philippines

    Bagarinao, Teodora Uy

  17. Nature matters: The AQD Museum and Biodiversity Garden, and the Environment Action Group

    Bagarinao, Teodora Uy

  18. The tungog (Ceriops tagal) industry and prospects for mangrove rehabilitation

    Primavera, Jurgenne H.; Pena, Lilian de la

  19. Mollusc: The public health issue

    Dagoon, N. J.

  20. Food safety through HACCP

    Adan, R. I. Y.

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