Browsing by Author "Byabasaija, Syliver"

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Abundance, Distribution and Ecological Impacts of Invasive Plant Species in Maputo Special Reserve, Mozambique
(Academic Journals, 2020-08) Byabasaija, Syliver; Ribeiro, Natasha; Cavane, Eunice; Salimo, Matola
With a few exceptions, comprehensive assessment of invasive plants species (IPSs) list that invade Maputo Special Reserve’s natural ecosystems is lacking. Some available data are either preliminary or localised, or focus on agricultural weeds that leave an ecological gap about IPSs. In order to establish this gap, a study was conducted to asses the impact of IPSs in Maputo Special Reserve. A stratified random sample was used to allocate five land use and land cover strata. Plots of 20 m diameter formed by two replicates were established in transects within plot of 160 m × 80 m and each invasive plants species number were counted and recorded. At every 10 km distance of the road side in different reserve directions, field plots of 10 m × 10 m were also established location and coordinates where invasive plants species occur recorded. With the ARCGIS 10.3 software, IPSs location coordinates were positioned on the map to create location. Data analysis was through calculation of diversity and evenness indices (Shannon-wiener (H') and Simpson (D'). Student’s t -test was used to compare diversity differences between the invaded and un-invaded sites. The result indicated the occurrence of 26 IPSs across all strata with Lantana camara and Eucalyptus sp being dominant. Settlement stratum recorded the highest level of invasive plants compared to other strata. Student t test on differences in Shannon-wiener diversity (H‘) between invaded and un-invaded areas showed that there was significant difference in species diversity (t 0.05(2) 170 =1.84 0.05< P< 0.10). The threat of IPSs is increasing at an alarming rate, thus control methods have to be designed to stop further spreading into Maputo Special Reserve.
Unlocking potential: an assessment of small‑scale aquaculture viability in the Lake Victoria Basin, Uganda
(Springer Nature Link, 2025-03-22) Byabasaija, Syliver; Limuwa, Moses; Semyalo, Ronald
Despite small-scale pond aquaculture being a vital component of the Lake Victoria Basin communities, its viability is not known. In this study, we examined the viability of small-scale pond aquaculture in the districts of Mpigi, Buikwe, and Wakiso in Uganda, focusing on social-economic and technical aspects. Employing a mixed-methods approach, including household surveys and focus group discussions with 169 fsh farmers, the study assessed the efectiveness and sustainability of small-scale pond aquaculture in 2023. Despite challenges such as market access, low input quality, and environmental impacts, small-scale pond aquaculture is economically viable and plays a crucial role in fsh production. The Buikwe and Wakiso districts demonstrated greater productivity and efciency than did the Mpigi district, with notable variations in fsh production and pond sizes. The study further highlights the need to improve market access, input quality, and income diversifcation through targeted interventions within the basin. Additionally, eforts should be made to optimize technical practices such as pond management, efcient feed management, optimal stocking and harvesting techniques as well as disease management and biosecurity.