Nelson Uwalaka- B.Sc., M.Sc., PhD. (Plant Ecology)
- Course Instructor at University of Winnipeg
Nelson Uwalaka
- B.Sc., M.Sc., PhD. (Plant Ecology)
- Course Instructor at University of Winnipeg
Currently working on the dispersion of weeds in relation to their resource acquisition.
About
14
Publications
3,586
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61
Citations
Introduction
A researcher with evolving career in the field of ecology. Special research interest lies in the biology and ecology of weeds, most importantly finding answers to how colonized sites can be reclaimed and restored.
Current institution
Additional affiliations
December 2020 - October 2022
Position
- Lecturer
Description
- Tutor undergraduate students, supervise undergraduate project works, supervise and grade undergraduate practicals, assist professors in grading and recording undergraduate and graduate students' examinations, carry out periodic field surveys and inventory, assist in departmental academic and administrative tasks.
April 2015 - November 2020
Position
- Research Assistant
Description
- Assist in preparation and publishing research articles, instruct undergraduate autecology and synecology practicals, collection and analysis of field data, assist in periodic field survey and inventory.
July 2016 - June 2019
Position
- Leader of the ECOBIO postgraduate research group
Description
- Helped organize mock research seminars among postgraduate students; Organized mini workshop on traditional vegetation analytical methods; Assisted in the analyses of biological and ecological data among postgraduate students of Botany
Education
April 2016 - September 2019
July 2013 - November 2015
September 2007 - March 2012
Publications
Publications (14)
Forests worldwide are being continuously disturbed by human activities and natural events, and tropical rainforest disturbance is specifically pronounced as indicated by its low biodiversity status. This study examined the floristic composition, species diversity and evenness in seven sample plots (100, 200, 400 and 2500 m2) in a secondary forest o...
This study examined variation in liana composition, abundance and environmental variables associated with them in a regenerating secondary rainforest in Ile-Ife, Nigeria. Six sample plots were established in the secondary forest in locations undergoing different degrees of regeneration for this study. All individual lianas were enumerated and girth...
The introduction of invasive species is known to cause changes in the structure and composition of native communities. These changes are not only restricted to the aboveground vegetation, but may be equally expressed in corresponding soil seed banks, which are legacy effects of the vegetation. This study assessed the impact of the invasive plant, A...
Riparian zones have been found to be a complex ecosystem subjected to flooding events of varying intensity and frequency. It is well established that flooding influences the vegetation dynamics of riparian forests but there is paucity of information on the impact of flooding frequency on the diversity, structure and composition in ri-parian forests...
Interplay between soil variables with structural and diversity indices of riparian vegetation needs to be explicated towards the conservation of this highly productive riparian forest ecosystems amidst pronounced anthropogenic activities in Southwestern Nigeria. The study was carried out in Osun State, Southwestern Nigeria. Nine sites were used for...
The ability of seeds to germinate under a broad environmental gradient is capable of increasing their chances of colonization. The germination of some native and invasive species were examined with a view to understanding some aspects of their biology. Mature seeds of the selected species were collected from natural populations, sterilized and plac...
Loss of biodiversity has been recognized as one of the main threats to the forest ecosystem. This study examined the diversity and conservation status of woody species in the secondary forest of Obafemi Awolowo University, Ile-Ife, Nigeria using six permanent plots. All woody species were completely enumerated, and identified; their girths at breas...
The existence of riparian vegetation is greatly threatened by change in land uses in Nigeria and information on historical management of land use which influences riparian vegetation dynamics is critical to the conservation of plants species diversity. This information is poorly understood especially in Nigeria and by extension in Africa. This stud...
Studies on the influence of host tree successional status on liana infestation are few or lacking in regenerating forests in Africa. This study examined some likely predictors of the abundance of dominant lianas in a regenerating lowland rainforest in Ile-Ife, Nigeria. Six sample plots (0.25 ha each) were sampled in the secondary forest in the Biol...
The impact of Chromolaena odorata on vegetation and soil seed bank was assessed in Ile-Ife, Nigeria. Ten sample plots, 10 m x 10 m each, were established in invaded plant communities with high density of Chromolaena odorata and adjacent uninvaded plant communities where the weed species has low density. In each sample plot, twenty 1 m x 1 m quadrat...
The composition, diversity, structure and host preference of climbers in a tropical lowland rain forest at Ile-Ife were examined in this study. Six plots (0.25 ha) were established in the secondary forest. In each plot, all the tree species ≥ 2 m in height were identified to species level and enumerated. The trees were examined for the presence of...
Successional studies in tropical forests have generally emphasized the tree component, ignoring the community dynamics of non-tree life-forms, and so there is a limited understanding of how the plant community as a whole is changing during succession within forests. Thus, this study examined the changes in climber community composition and structur...
