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  • 1
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    Aquatic weeds hotspots in the Lake Victoria basin Uganda and on Lake Kyoga: implications for their management (2021)
    National Fisheries Resources Research Institute | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/20747 | 4230 | 2016-06-11 10:55:37 | 20747 | National Fisheries Resources Research Institute, Uganda
    Details
    Publication Date: 2021-07-12
    Description: Proliferation of invasive aquatic weeds has developed into a major ecological and socio economic issue formany regions of the world. As a consequence, inference on where to target control and other managementefforts is critical in the management of aquatic weeds (Ibáñez et al., 2009). Notwithstanding, aquatic systemsin Uganda in general and in the basins of Lakes Victoria and Kyoga in particular, have fallen victims to aquaticweeds invasion and subsequent infestation. If these aquatic weeds infestations are to be minimized and theirimpacts mitigated, management decisions ought to be based on up-to-date data and information in relation tolocation of infestation hotspots. Aquatic systems in the basins of the two production systems are importantsources of livelihoods especially from fish production and trade yet they are prone to infestation by aquaticweeds. Thus, the invasion and subsequent infestation of aquatic ecosystems by aquatic weeds pose a majorconservation threat to various aquatic resources (Catford et al., 2011; Kayanja, 2002).This paper examines the extent to which aquatic weeds have infested aquatic ecosystems in the basins ofLakes Victoria and Kyoga. The information is expected to guide management of major aquatic weeds throughrational allocation of the scarce resources by targeting hotspots.
    Keywords: Environment
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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    Format: 1
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  • 2
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    A report on the survey of Lakes Opeta and Bisina to further collect data on presence of Hydrilla verticilata and potential biological control agents (2021)
    Fisheries Resources Research Institute | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/20760 | 4230 | 2016-06-12 14:46:15 | 20760 | National Fisheries Resources Research Institute, Uganda
    Details
    Publication Date: 2021-07-12
    Description: Reports of hydrilla (Hydrilla verticilata) infestation lakes Bisina and Opeta were verbally communicated by some members of FIRRI who undertook surveys during the LVEMP 1 phase (1997 to 2004) to assess the diversity and stocks of fishes in the Kyoga basin satellite lakes. This issue was taken up by FIRRI and NAARI staff who work on aquatic weeds management to ascertain and quantify the presence of H. verticilata and other aquatic weeds, with the sole aim of finding ways and means of controlling one of the world's worst aquatic weeds, H. verticilata.The survey on Lake Opeta indicated that this weed was rare since only a few small broken pieces were sited at the lake's outflow through an extensive wetland to Lake Bisina. It was therefore concluded that it was not economically viable to allocate resources for further survey of H. verticilata on Lake Opeta. This finding therefore discredited the previous (informal) reports that H. verticilata was well established on Lake Opeta. It should be noted that the reports came from scientists who were not well versed with systematics of aquatic plants.
    Keywords: Environment ; Limnology
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 9
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  • 3
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    Aquatic macrophytes (water plants): a resource or a foe (2021)
    National Fisheries Resources Research Institute | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/20797 | 4230 | 2016-06-15 12:45:59 | 20797 | National Fisheries Resources Research Institute, Uganda
    Details
    Publication Date: 2021-07-12
    Description: The poster explains the effects of aquatic plants to fisheries and how they can be controlled.
    Keywords: Environment ; Fisheries
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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    Format: 1
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  • 4
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    Status of kariba weed (Salvinia molesta) infestation, its impacts and control options on Uganda’s water systems (2021)
    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/20933 | 4230 | 2016-07-24 07:50:29 | 20933 | National Fisheries Resources Research Institute, Uganda
    Details
    Publication Date: 2021-07-13
    Description: Kariba weed (Salvinia molesta) is an invasive alien waterweedthat was first recorded in Uganda in sheltered bays of LakeKyoga in June 2013. This waterweed has become a commonfeature on Lake Kyoga and its associated rivers, streams andswamps, and has spread to other lakes notably Kwania and Albert in addition to Lake Kimira in Bugiri district.
    Keywords: Environment ; Fisheries
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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    Format: 1
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  • 5
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    Management of water hyacinth, Eichhornia crassipes, in Lake Victoria Basin (2021)
    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/20173 | 4230 | 2016-02-25 15:23:38 | 20173 | National Fisheries Resources Research Institute, Uganda
    Details
    Publication Date: 2021-07-08
    Description: Water hyacinth is a free-floating waterweed native to theAmazon River Basin in South America. In its native range,water hyacinth is not an environmental problem, althoughthe weed is one of the most invasive alien plants infreshwater environments. Water hyacinth has the potentialto become invasive through fast vegetative reproductionand rapid growth to accumulate huge biomass and extensive cover in freshwater environments.Over the last 150 years water hyacinth has invaded most countries in the tropics and sub-tropics, introduced by man, mainly for ornamental purposes. Such introductions led to the infestation of most freshwater-ways in the southern United States of America, parts of Australia, the pacific islands, and most countries in Asia and Africa.The extensive tightly packed mats of water hyacinth are often associated with devastating socio-economic and environmental impacts. Invasion by the weed has, therefore, often generated urgent costly problems associated with the weed biomass and its management. A classic example of such problems was triggered by the invasion and proliferation of water hyacinth in the Lake Victoria Basin during the 1980s (Freilink 1989, Taylor 1993, Twongo et al., 1995). The weed infestation marked the beginning of a decade of intensive and systematic campaign by the three riparian states (Kenya, Tanzania and Uganda) to bring weed proliferation under control. The discussions in this Chapter span over ten years of dealing with the challenges paused by the imperative to manage infestations of water hyacinth in the Lake Victoria Basin. The challenges included the need to understand the dynamics of water hyacinth infestation; its distribution, proliferation and impact modalities; and the development and implementation of appropriate weed controlstrategies and options. Most specific examples were taken from the Ugandan experience (NARO, 2002).
    Keywords: Ecology
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 187-204
    Format: 321
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  • 6
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    A new water weed, giant salvinia (Salvinia molesta), invades Lake Kyoga (2021)
    National Fisheries Resources Research Institute | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/20322 | 4230 | 2016-06-15 12:23:31 | 20322 | National Fisheries Resources Research Institute, Uganda
    Details
    Publication Date: 2021-07-09
    Description: Giant salvinia (Salvinia molesta) is an introduced invasivewater weed in the tropics and subtropics It is a free floating weed that grows rapidly and forms extensive dense mats over still or slow moving waters.
    Keywords: Environment ; Fisheries
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 2
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  • 7
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    Aquatic weeds hotspots in the Lake Victoria basin – Uganda and on Lake Kyoga: implications for their management (2021)
    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/20440 | 4230 | 2016-04-07 07:51:42 | 20440 | National Fisheries Resources Research Institute, Uganda
    Details
    Publication Date: 2021-07-08
    Keywords: Environment ; Fisheries
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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    Format: 1
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  • 8
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    Quarterly technical reports for Lake Edward, George, and Kazinga Channel, October-December 2006 (2021)
    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17313 | 4230 | 2020-10-26 04:05:14 | 17313 | National Fisheries Resources Research Institute, Uganda
    Details
    Publication Date: 2021-07-11
    Description: Geo-reference information on physical and chemical characteristics of Lake Edward, George, Kwania, Inventory.
    Keywords: Fisheries
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 27
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  • 9
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    Research thematic areas and projects captured from the realigned research agenda. ARTPII thematic areas (2021)
    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17324 | 4230 | 2020-10-26 05:15:35 | 17324 | National Fisheries Resources Research Institute, Uganda
    Details
    Publication Date: 2021-07-11
    Description: Perceptions the impact of the recommended fishing gears and methods on fishes livelihoods assessed effectiveness of l.Kyoga SMUs in understaking their roles in fisheries management resources required to remain viavle and sustainable and the means toacquire them assessed
    Keywords: Fisheries
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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