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A Conceptual Analysis of the Metaphors in selected Ekegusii Pop Songs: A Cognitive Semantics Approach
(Lambert Academic Publishing, 2020) Ntabo, Victor
Pop songs convey social messages in different perspectives. Studies on pop songs reveal that composers employ metaphors to express their subjective feelings. The meaning of the metaphors in Ekegusii pop songs need to be interpreted to understand the message of the composers.The purpose of the study was to undertake a cognitive semantics analysis of Ekegusii pop songs. The study was guided by the following research objectives: to identify the metaphors in the Ekegusii pop songs using the Metaphor Identification Procedure Vrije Universiteit; to analyse the metaphors in the Ekegusii pop songs using the Conceptual Metaphor Theory; and to determine the influence of the demographic variable of sex in the conceptualization of the metaphors in Ekegusii pop songs. The Conceptual Metaphor Theory was employed to map the metaphors in the Ekegusii pop songs into different corresponding conceptual mappings.The study employed the mixed methods research design. The target population was the Ekegusii speakers. An interview was conducted among the 36 participantsselected based on sex. The Ekegusii pop songs were purposively sampled using the criterion of richness in metaphoricity. The qualititative data were analysed thematically by classifying the identified metaphors into four conceptual domains using the principle of Great Chain of Being metaphor. Four annotators, including the researcher, collected 54 Metaphor Related Words basedon the criterion adapted from the Metaphor Identification Procedure Vrije Universiteit. The identified metaphors were translated into English and presented in a table which containedthe metaphor value and the level of the metaphor in the principle of Great Chain of Being Metaphor. Three lexical units were marked as Discard From Metaphor Analysis. The study further classified the Metaphor Related Words as direct, indirect and possible personifications. The quantitative data were analysed using the Statistical Package for Social Sciences in which Chi square at a significance level of 0.05 was employed to test the statistical relationship between sex and metaphoric conceptualization. The study found that sex significantly influences the conceptualization of the conceptual domains of: A HUMAN BEING IS A HUMAN BEING, A HUMAN BEING IS AN ANIMAL and A HUMAN BEING/EDUCATION IS AN OBJECT. However, Chi square test analysis showed insignificant association between sex and the conceptual domain ofA HUMAN BEING/EDUCATION IS A PLANT in the negative metaphor value.The research concludes that metaphor is a useful cognitive tool of conceptualizing human beings and the concept of education in Ekegusii pop songs. The study recommends that language researchers should employ the Metaphor Identification Procedure Vrije Universiteit in metaphor studies.The findings of the study will benefit the audience of the Ekegusii pop songs, ethnographers and metaphor theorists to conceptualize Ekegusii pop songs and culture.
Moving in the Anthropocene: Global reductions in terrestrial mammalian movements.
(2018-01-26) Tucker, Marlee A...; Kimuyu, D. M...
Animal movement is fundamental for ecosystem functioning and species survival, yet the effects of the anthropogenic footprint on animal movements have not been estimated across species. Using a unique GPS-tracking database of 803 individuals across 57 species, we found that movements of mammals in areas with a comparatively high human footprint were on average one-half to one-third the extent of their movements in areas with a low human footprint. We attribute this reduction to behavioral changes of individual animals and to the exclusion of species with long-range movements from areas with higher human impact. Global loss of vagility alters a key ecological trait of animals that affects not only population persistence but also ecosystem processes such as predator-prey interactions, nutrient cycling, and disease transmission.
Wild herbivores enhance resistance to invasion by exotic cacti in an African savanna.
(John Wiley & Sons Ltd on behalf of British Ecological Society, 2022-10-11) Wells,Harry B. M.; Crego, Ramiro D.; Alston, Jesse M.; Ndung'u, S. Kimani; Khasoha, Leo M.; Reed, Courtney G.; Hassan, Abdikadir A.; Kurukura, Samson; Ekadeli, Jackson; Namoni, Mathew; Stewart, Peter S.; Kimuyu, Duncan M.; Wolf, Amelia A.; Young, Ruman P.; Kartzinel, Tyler R.; Palmer, Todd M.; Goheen, Jacob R.; Pringle, Robert M...
Whether wild herbivores confer biotic resistance to invasion by exotic plants remains a key question in ecology. There is evidence that wild herbivores can impede invasion by exotic plants, but it is unclear whether and how this generalises across ecosystems with varying wild herbivore diversity and functional groups of plants, particularly over long-term (decadal) time frames.
Using data from three long-term (13- to 26-year) exclosure experiments in central Kenya, we tested the effects of wild herbivores on the density of exotic invasive cacti, Opuntia stricta and O. ficus-indica (collectively, Opuntia), which are among the worst invasive species globally. We also examined relationships between wild herbivore richness and elephant occurrence probability with the probability of O. stricta presence at the landscape level (6150 km2).
Opuntia densities were 74% to 99% lower in almost all plots accessible to wild herbivores compared to exclosure plots. Opuntia densities also increased more rapidly across time in plots excluding wild herbivores. These effects were largely driven by megaherbivores (≥1000 kg), particularly elephants. At the landscape level, modelled Opuntia stricta occurrence probability was negatively correlated with estimated species richness of wild herbivores and elephant occurrence probability. On average, O. stricta occurrence probability fell from ~0.56 to ~0.45 as wild herbivore richness increased from 6 to 10 species and fell from ~0.57 to ~0.40 as elephant occurrence probability increased from ~0.41 to ~0.84. These multi-scale results suggest that any facilitative effects of Opuntia by wild herbivores (e.g. seed/vegetative dispersal) are overridden by suppression (e.g. consumption, uprooting, trampling).
Synthesis. Our experimental and observational findings that wild herbivores confer resistance to invasion by exotic cacti add to evidence that conserving and restoring native herbivore assemblages (particularly megaherbivores) can increase community resistance to plant invasions.
Lessons from a century of evidence-based fire management in grassy ecosystems.
(2022-02-28) Govender, Navashni; Staver, Carla; Archibald, Sally; Wigley-Coetsee, Corli; Strydom, Tercia; Humphrey, Glynis; Kimuyu, Duncan
This African Journal of Range and Forage Science, fire Special Issue is dedicated to Winston Smuts Watts Trollope for his contribution, commitment, inspiration, support and a life-time of work to fire Ecology, with a tribute compiled by Navashni Govender, Sally archibald, Susanne Vetter andCorli Wigley-Coetsee. Brian W Van Wilgen wrote a succinct yet thorough review of the book titled ‘Ecology of fire-dependent ecosystems: Wildland fire science, policy and management’, by Devan McGranahan and Carissa Wonkka. although the authors are from North America and the focus is accordingly skewed towards the northern hemisphere, many good examples are used from around the globe, including Africa, to introduce all aspects of wildland fire science. Van Wilgen's review highlights how fire use, and fire research in Africa has contributed to the global understanding of the interplay between science, policy and management, and this sets the scene for the papers presented in this special issue.
Fine-scale variation in soil and topography influences herbaceous vegetation and the distribution of large mammalian herbivores
(John Wiley & Sons Ltd., 2023-09) Ang'ila, Robert O.; Kimuyu, Duncan M.; Wambugu, Geoffrey M.; Kenfack, David; Musili, Paul M.; Kartzinel, Tyler R.
Current understanding of the distribution of vegetation and large mammalian herbivores (LMH) is based on a combination of biogeographic studies and highly controlled field experiments, but a more complete understanding of these patterns requires study of their natural co-occurrence patterns at intermediate spatial scales. The study was conducted in the 120-ha Mpala Forest Global Earth Observatory (ForestGEO) plot, Kenya. We examined differences in herbaceous plant communities and habitat use by LMH among three topographic habitats with distinct soil types, namely steep slopes, valley and plateau. Each pair of habitats differed in plant and animal com-position. The steep slopes and plateau respectively had ≥1-fold higher percentage herbaceous cover than the valley, whereas the steep slopes and valley had >1.5-foldgreater grass species richness and diversity than the plateau. The activity of LMH was≥1.7-fold higher in the valley than the steep slopes and plateau, reflecting a positive relationship between LMH activity index and richness and diversity of grass species. Results indicate that fine-scale variation in topography and soil are associated with both the distribution of herbaceous vegetation and LMH, suggesting a need to ac-count for local habitat characteristics when examining the distributions of plants, animals, and plant-herbivore interactions in natural systems.