References of "Nsengimana, Venuste"
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See detailUse of Soil and Litter Arthropods as Biological Indicators of Soil Quality in Southern Rwanda
Nsengimana, Venuste ULiege

Doctoral thesis (2018)

Abstract - Nsengimana Venuste (2018). Use of soil and litter arthropods as biological indicators of soil quality in Southern Rwanda. University of Liège, Gembloux Agro Biotech. Pages: 121, tables: 13 ... [more ▼]

Abstract - Nsengimana Venuste (2018). Use of soil and litter arthropods as biological indicators of soil quality in Southern Rwanda. University of Liège, Gembloux Agro Biotech. Pages: 121, tables: 13, figures: 3 To assess soil quality under different land uses by the use of soil and litter arthropods as biological indicators, a research was conducted in the Arboretum of Ruhande and the Rubona agricultural research station in southern Rwanda. Soil and litter arthropods were collected by pitfall sampling technique and identified to the family level. Ants (Hymenoptera: Formicidae) were identified to species level. Soil cores were collected and analysed for soil organic carbon, total nitrogen, available phosphorus, pH, aggregate stability, cation exchange capacity, electrical conductivity, silt, and clay and sand soil textures. C:N ratios were calculated from the mass of carbon to the mass of nitrogen. Higher levels of total nitrogen, soil organic carbon, and clay and silt soil texture were found in native and exotic tree species. Higher levels of cation exchange capacity, pH, and electrical conductivity were found in native tree species and banana plantations, while higher levels of available phosphorus, aggregate stability and sand soil texture were found in coffee and banana plantations. The analysis of the abundance of collected soil and litter arthropods indicated higher abundance of the most of identified families in native and exotic tree species than in the varieties of coffee and banana plantations. Families of Scolopendridae, Trombiculidae, Eosentomidae, Formicidae and Staphylinidae showed strong correlation with soil physicochemical properties. Formicidae highly occurred in all land uses and discriminated between clay, sand, aggregate stability, pH, available phosphorus, electrical conductivity and cation exchange capacity. The ecological functions of identified families contribute to the soil quality through predation, decomposition, bioturbation and phytophagous that increase soil organic matter and facilitate water retention and soil aeration. The taxonomy of ants to species level indicated 30 species belonging to 14 genera, and four subfamilies, the Formicinae, Dorylinae, Myrmicinae and Ponerinae. These species correlated with soil properties in different ways, but their ecological functions that contribute to soil quality are not yet well documented. We recommend further studies to be replicated in other land uses and ecological zones of Rwanda, to include the impact of climate variability, altitudinal variation, functional diversity, metal and soil microbiology and the taxonomy of the entire community composition of collected soil and litter arthropods to species level in order to generalize these findings. Key words: Community composition, Doryllinae, Formicinae, Myrmicinae, Ponerinae, land use, physicochemical parameters [less ▲]

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See detailUse of Soil and Litter Ants (Hymenoptera: Formicidae) as Biological Indicators of Soil Quality Under Different Land Uses in Southern Rwanda
Nsengimana, Venuste ULiege; Kaplin, A. Beth; Francis, Frédéric ULiege et al

in Environmental Entomology (2018)

The use of soil and litter arthropods as biological indicators is a way to assess environmental changes, where ant species in particular may serve as important indicators of soil quality. This study aimed ... [more ▼]

The use of soil and litter arthropods as biological indicators is a way to assess environmental changes, where ant species in particular may serve as important indicators of soil quality. This study aimed at relating the abundance of soil and litter ant species to soil parameters under different tree species, both native and exotic, and varieties of coffee and banana plantations. Variations were found in soil physicochemical parameters. A total of 30 species belonging to 14 genera, and four subfamilies, the Formicinae, Dorylinae, Myrmicinae, and Ponerinae were identifed. Higher abundance was found in coffee plantations compared to banana plantations, exotic and native tree species. Species of Camponotus cinctellus and Odontomachus troglodytes occurred in all land uses which is a sign of tolerance to a wide range of soil properties. In addition, these species, together with Myrmicaria SP02, Phrynoponera gabonensis, Camponotus SP06, Myrmicaria opaciventris, Pheidole SP03, Tetramorium simillimum, Pheidole SP01, and Tetramorium laevithorax were not strongly correlated with soil physicochemical parameters. Species of Pheidole SP02 and Camponotus SP05 were restricted to specifc soil physicochemical properties, while species of Tetramorium zonacaciae and Bothroponera talpa discriminated between native tree species, coffee plantations, soil organic carbon, sandy soil texture, and aggregate stability. We concluded that these ant species can differently indicate the soil quality depending on the land use. We recommended further studies in order to generalize these fndings [less ▲]

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See detailUse of soil and litter arthropods as biological indicators of soil quality in forest plantations and agricultural lands: A Review
Nsengimana, Venuste ULiege; Beth, A. Kaplin; Francis, Frédéric ULiege et al

in Entomologie Faunistique (2018), 71

This article reviewed published papers on the use of soil and litter arthropods as biological indicators of soil quality since the 1970s. Our review shows that soil and litter arthropods are litter ... [more ▼]

This article reviewed published papers on the use of soil and litter arthropods as biological indicators of soil quality since the 1970s. Our review shows that soil and litter arthropods are litter transformers and ecosystem engineers. They contribute to the availability of organic matter. Their diversity, abundance, biomass, and density are suitable measures for the assessment of natural and/or anthropogenic effects on soil. However, their use is challenged by difficulties in sampling methods and the identification of soil and litter arthropod diversity up to species level, and few research projects combine both abiotic and biotic factors. We recommend further research to investigate the most suitable methods for sampling soil and litter arthropods, and create a classification of dominant groups up to species level which, along with the use of integrative methodologies, will be valuable steps towards a generalized and accepted method for the assessment of soil quality [less ▲]

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See detailA comparative study between sampling methods for soil litter arthropods in conserved tree plots and banana crop plantations in Rwanda
Nsengimana, Venuste ULiege; Kaplin, A. Beth; Frederic, Francis et al

in International Journal of Development and Sustainability (2017), 6(8), 900-913

The aim of this study was to compare trapping efficiency between Berlese-Tullgren funnels, pitfall traps and hand sorting sampling methods for soil litter arthropods. The study was carried out at the ... [more ▼]

The aim of this study was to compare trapping efficiency between Berlese-Tullgren funnels, pitfall traps and hand sorting sampling methods for soil litter arthropods. The study was carried out at the Arboretum of Ruhande and Rubona agricultural research station, in southern Rwanda. Biological indices indicated that pitfall traps collect a wide range of soil litter arthropod diversity, and chi-square test indicated the dependence between Berlese-Tullgren funnels and pitfall traps, and between pitfall traps and hand sorting. Z-test and univariate comparison indicated differences in means between tested sampling methods. The analysis of variance revealed that pitfall traps are less time consuming and the principal component analysis indicated that Formicidae is likely to be collected by pitfall traps and Berlese-Tullgren funnels, while Julidae, Porcellionidae and Geophilidae are likely to be collected by hand sorting. Research concluded that pitfall traps are more efficient than other studied sampling methods, but further studies should be conducted in other ecological zones, and different land uses in order to generate general information of these findings. [less ▲]

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See detailKnowledge, Attitudes and Awareness of Pre-Service Teachers on Biodiversity Conservation in Rwanda
Nsengimana, Venuste ULiege

in International Journal of Environmental and Science Education (2017)

This research presents a case study on the knowledge of pre-service teachers of the school of lower secondary education on biodiversity conservation in Rwanda. It critically examines the implication of ... [more ▼]

This research presents a case study on the knowledge of pre-service teachers of the school of lower secondary education on biodiversity conservation in Rwanda. It critically examines the implication of the level of knowledge on attitudes and behaviors towards biodiversity conservation and the potential implications of a lack of the courses focusing on biodiversity conservation in the school of lower secondary education, and presents empirical data from a survey and group discussions. Results showed that generally the level of knowledge of pre-service teachers on biodiversity conservation is high, and there is positive correlation between knowledge, awareness and attitude, which in turn may contribute to sustainable biodiversity conservation in Rwanda. Research concluded that there should be another research on the side of primary and secondary students in order to verify if the skills of teachers in biodiversity conservation are fully taught to the students. [less ▲]

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See detailPerceptions of Local People on the Use of Nyabarongo River Wetland and Its Conservation in Rwanda
Nsengimana, Venuste ULiege

in International Journal of Society and Natural Resources (2016)

This research presents a case study on perceptions of local people on the use of Nyabrongo river wetland and its conservation in Rwanda. It critically examines the potential implications of a shift in ... [more ▼]

This research presents a case study on perceptions of local people on the use of Nyabrongo river wetland and its conservation in Rwanda. It critically examines the potential implications of a shift in wetland use and management practices for local people and presents empirical data from a household survey, group discussions, and observations from transect walks. Results showed that the change in the use and management regime of Nyabarongo river wetland poses substantial loss for local people in terms of provision of resources, income, and access to the wetland, so that the majority of the participants are not happy with the current use of the wetland. Research concluded that there should be participation of all stakeholders, including local people, during policy development in order to shift from commandand- control toward local stakeholder integration in decision making. [less ▲]

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