A field experiment was conducted to examine the ecological responses of macroinvertebrates to an in-stream ecosystem restoration technique called woody debris introduced in a stream in different arrangements to show how they (woody debris) affected the macroinvertebrate ecology, specifically assemblage composition and biometrics in River Nabongo. The experiment was carried out in two heterogeneous stream environments i.e., i) in a riffle found in the middle reaches of the river at a higher altitude and ii) a pool in the lower altitude and reaches of the river. Each of these two treatments had a control plot for comparison purposes. Four macroinvertebrate sampling campaigns were launched in experimental sites from September 2019 to April 2021. All restoration structures had more macroinvertebrates than control and pre-treatment sites. The introduction of simple structures at the riffle site led to an increase in collector-filterers from 9-128 individuals, while at the pool site all the structures increased macroinvertebrates by 1151 individuals. Taxon richness was highest in the complex plot with 14±0.41 which significantly differed from the rest of the sampling plots at P<0.05. The relative abundance of taxa at the pool site varied significantly from one sampling plot to another at P<0.05 with the highest mean abundance registered in complex and simple structures having 61.3±0.10 and 23.5±0.11 respectively. It was concluded that complex woody debris structures increase the diversity, abundance and richness of aquatic macroinvertebrates by providing hard substrates for colonization by algae and microorganisms on which macroinvertebrates feed. We recommended that other researchers should study the impact of other in-stream ecosystem restoration techniques such as floating islands, constructed wetlands, D-deflectors, a comparison of which with restored woody debris will enable ecologists to choose the most suitable technique to apply at different stream points.

Farmers in tropical rural areas are confronted with several challenges but outstanding among thesechallenges is soil degradation arising from soil erosion. This study involved identifying the dominant soil andwater conservation practices and assessing the factors affecting their adoption in the Muyembe sub-county,Eastern Uganda. A total of 500 respondents were used to obtain primary data. As the study adopted a crosssectionaldesign, we used questionnaires, interviews, focus group discussions and field observations to collectthe required data. Data were analyzed using descriptive statistics and the non-parametric (Chi-square) test.The results indicated that the dominant soil and water conservation practices adopted in the study area were,contour cropping (77%), mixed cropping (59% and crop rotation (51%). The remaining five practices hadless than a 50% adoption rate. The chi-square test revealed that the age and gender of the farmers had asignificant association with the levels of the adoption of soil and water conservation practices among farmersat P<0.001. We concluded that the adoption of soil and water conservation practices was low, which left themajority of farmers vulnerable to soil erosion effects such as low yields and crop failure. We recommend thatstakeholders who work on soil and water conservation programs use model farmers in the area to educateand demonstrate the importance of soil and water conservation practices to other farmers.

This study assessed the environmental and socio-economic impact of waste management practices in Mbale city. We used questionnaires, interviews, focused group discussions and field observations to collect the required data, which was analysed using basic descriptive statistics and Chi square test (χ2).  Results indicate that, the solid waste management practices employed in Mbale City resulted into degradation of air quality (P<0.001), water quality (P<0.001) and land (P<0.101). Socio-economic analysis indicated that costs of waste management practices outweighed the benefits. The management practices were associated with severe health issues to the households living near dumpsites and waste management employees, although revenue and employment opportunities were also created in some instances in remote areas of the city there is limited sorting of hazardous from ordinary wastes that have come with associated effects on the environment. A conclusion was reached that, despite employing many citizens, the present solid waste management practices in Mbale City responsible for injuries incurred by scavengers (waste collectors), land and air quality degradation as citizens lack knowledge of proper waste management systems. Therefore, City authorities should sensitize the masses on best waste management practices like sorting and recycling and provide incentives for collection, sorting and assemblage of recyclable non-biodegradable wastes.

The study was aimed at comparing the efficiency of three macroinvertebrate sampling tools used in lotic environmental impact assessment of River Sipi including Surber sampler, rock-filled basket and Kick net sampling tools. The efficiency of the sampling tools was based on the data collected by each sampling tool, which was in turn used to calculate the Relative variation (RV) (efficiency), diversity, richness, and relative abundance, time taken to sort macroinvertebrate per sample and taxa assemblage. Data was analysed using a two-way ANOVA that was performed under the R Development Core Team 2010. The results indicated that despite the fact that all the sampling tools were efficient in sampling macroinvertebrates with RV<25%, both kick net and rock-filled basket obtained closely comparable efficiency results with Relative Variation ranging between 0.54-2% for the kick net and 1.4-3.6% for rock filled basket. Of the three sampling tools, the kick net was the most efficient, collecting a greater diversity of macroinvertebrate taxa (1.81±0.04) and a greater number of specimens (1444), abundance (66.4±0.25%), greater taxa richness (11±0.41) but required the biggest amount of time to sort macroinvertebrates (26±0.71minutes). In conclusion, the rock-filled basket served as the next best alternative efficient sampling tool to kick net in sampling macroinvertebrates.

This study investigated the relationships between land use, habitat quality, physicochemical water quality and fish assemblage in the Sironko River catchment, a tropical mountain stream flowing into the Lake Kyoga asin in Eastern Uganda. The study was carried out at different land use sampling sites (natural forest, pastureland, plantation forest, mixed agriculture, banana plantation, urban and sugarcane plantation) for 6 months from November 2019 to April 2020. The habitat quality score (HQS) ranged between 49% in the urban area and 75% in the natural forest. There was a general increase in the temperature, conductivity, total dissolved solids, turbidity and nitrate concentration in the Sironko River as it flowed from upstream to downstream from the natural forest to the sugarcane plantation. Conversely, there was a reduced dissolved oxygen concentration and water transparency as the river traversed the different land uses downstream. A total of 765 fish individuals belonging to 9 fish species (Amphilius jacksonii, Amphilius uranoscopus, Barbus altianalis, Labeo victorianus, Clarias leocephalus, Clarias carsonii, Cyprinus carpio, Barbus palludinosus and Barbus jacksonii) were captured using an electrofishing gear. Fish identification was based on external morphological characteristics. Amphilius uranoscopus and Barbus altianalis were only caught in the natural forest and pastureland at a high altitude characterized by low temperature and high dissolved oxygen concentration. The fish species belonged to 3 trophic feeding groups dominated by the insectivorous fish. Pearson correlation coefficients showed a weak negative relationship (r = −0.249) between fish community and habitat quality, while fish assemblage and physicochemical water quality unveiled a weak positive relationship (r = 0.176). The coefficient of determination (R2 = 0.695) indicated 69.5% of the fish community variability was accounted for by the physicochemical water quality variables in Sironko River System. Accordingly, it was concluded that physicochemical water quality attributes are the most important factors determining the distribution of fish species with land use in the Sironko River catchment, a tropical mountain stream. The Sironko River catchment is hydraulically and biologically connected to Lake Kyoga through a series of satellite lakes and swamps. The river is spawning area for Clarias leocephalus, Clarias carsonii and Amphilius lujani fish species of the lake.

This study aimed at identifying and characterising the major organic banana farming technologies used and assessing the drivers of adoption of the same in Kajara County. A total of 360 respondents were used to obtain primary data. As the study adopted a cross-sectional design, we used questionnaires, interviews, focus group discussions, and field observations to collect the required data. Data was analysed using descriptive statistics and the non-parametric (Chi-square) tests. Results indicate that the major organic banana farming technologies adopted in the study area were mulching, cover cropping, farmyard manure application, pest and weed management. The chi-square test revealed that the marital status, gender, and level of education of the farmers had significant positive effects on the adoption of organic banana farming technologies among the farmers. We concluded that, generally, the rate of adoption of organic farming technologies in Kajara County was low, and therefore, there is a need for emphasising the training of the farmers at local levels so as to equip them with information on the organic farming technologies for sustainable banana farming. We recommend that stakeholders who work on agricultural programs use model farmers in the area to educate and demonstrate the importance of organic banana farming technologies

The study aimed at establishing sustainable Human-wildlife co-existence strategies to help settle the conflicts existing between humans and wildlife living around Busitema Central Forest Reserve. To achieve this, we first examined the nature of the existing conflicts which helped us to come up with conflict-specific co-existence strategies. We used questionnaires, interviews and focused group discussions, where the information obtained was confirmed by field observations. The data was then analysed using simple descriptive statistics like percentages, means and standard deviations. Results indicated that primates (baboons and monkeys) dominated the conflicting list of wildlife with humans followed by rodents while carnivores were the least reported. Crop raiding (100%), livestock and poultry predation (36%) were the most dominant conflicts reported posed to man while habitat destruction (40%) and road accidents (26%) were the biggest conflict man has posed on wildlife. Equitable compensation (10±0.0) and community involvement in conservation (8±1.4) dominated the sustainable Human-Wildlife co-existence strategies suggested by local communities. It was concluded that, involvement of local communities in wildlife conservation should be prioritized and areas surrounding the protected forest area should be planted with crops such as tea and trees such as eucalyptus (woodlots) that are not affected by wildlife but rather are enhancers of wildlife habitats

The study was the first in Uganda to assess the responses of fish community assemblages to introduced woody debris structures in a tropical river in Eastern Uganda. For comparison purposes, two different woody debris structures (simple and complex) were introduced in river Nabongo, and their effect on fish assemblage and feeding was established based on experiments conducted in two heterogeneous stream environments (a pool and a riffle). Results showed that sampling plots treated with restoration structures registered higher fish species richness, diversity, and abundance than sampling plots without restoration structures (control plots) at each site. The study (experiment) applied a stratified sampling design which used purposive identification of a pool and a riffle in River Nabongo Catchment. Fish were captured using a drift net, an electro-fishing gear, and a hand net. Data were analysed using a one-way ANOVA generated from STATA version 14. At the pool site, total fish density varied significantly from plot to plot (P<0.05) but was highest in the complex structures with 64±1.08 fishes/m2 and lowest with 24±0.82 fishes/m2 in untreated plots. K-factor did not vary significantly in untreated plots at the pool site but significantly differed from treated plots at P<0.05. The relative abundance of fish species at the pool site was highest in the complex structures with 40.7±0.66% and 21.5±0.42% before structures but was least in the control plot, varying significantly from plot to plot at P<0.05. It was concluded that woody debris restoration is an effective stream restoration technique. Fish individuals, trophic groups, and taxa more densely colonised sampling plots that had structures than those that did not have structures.