School of Natural Resources and Environmental Studies: Recent submissions
Now showing items 21-40 of 134
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Evidence of nutrient translocation in response to smoke exposure by the East African ant acacia, Vachellia drepanolobium
(Wiley & Sons Ltd, 2021-09)1. Fire is a major selective force on arid grassland communities, favoring traits such as the smoke-induced seed germination response seen in a wide variety of plant species. However, little is known about the relevance ... -
Using the Biological Condition Gradient Model as a Bioassessment Frameworks to Support Rehabilitation and Restoration of the Upper Tana River Watershed in Kenya
(Frontiers in Environmental Science, 2021-07)The biological condition gradient (BCG), a scientific framework that describes the change in ecosystem characteristics in response to human-induced levels of stressors, was modified and used to characterize watershed ... -
The Biological Assessment and Rehabilitation of the World’s Rivers: An Overview
(Water, 2021-01-31)The biological assessment of rivers i.e., their assessment through use of aquatic assemblages, integrates the effects of multiple-stressors on these systems over time and is essential to evaluate ecosystem condition and ... -
Naïve plant communities and individuals may initially suffer in the face of reintroduced megafauna: An experimental exploration of rewilding from an African savanna rangeland
(PLOS ONE, 2021-04-06)Excluding large native mammals is an inverse test of rewilding. A 25-year exclosure experiment in an African savanna rangeland offers insight into the potentials and pitfalls of the rewilding endeavor as they relate to the ... -
Naïve plant communities and individuals may initially suffer in the face of reintroduced megafauna: An experimental exploration of rewilding from an African savanna rangeland
(PLOS ONE, 2021-04-06)Excluding large native mammals is an inverse test of rewilding. A 25-year exclosure experiment in an African savanna rangeland offers insight into the potentials and pitfalls of the rewilding endeavor as they relate to the ... -
Synergistic effects of long-term herbivory and previous fire on fine-scale heterogeneity of prescribed grassland burns
(Ecology, 2020-10)Grassland and savanna ecosystems, important for both livelihoods and biodiversity conservation, are strongly affected by ecosystem drivers such as herbivory, fire, and drought. Interactions among fire, herbivores and ... -
The Trend and the Pattern of Seasonal Rainfall in the Period 1993 – 2018 in Embu East Sub County, Kenya
(East African Journal of Environment and Natural Resources, 2020)Kenya, like many countries in the world, is vulnerable to climate variability and change. The livelihood of the people in Embu East Sub-county is highly dependent on rain-fed agriculture so climatic threats affect food and ... -
Floristic Composition, Affinities and Plant Formations in Tropical Forests: A Case Study of Mau Forests in Kenya
(International Journal of Agriculture and Forestry, 2015)In the past, Mau forest complex has faced a wide range of disturbances majorly anthropogenic in nature. In this paper, the ecosystem floristic composition, richness, diversity and affinities are evaluated. Diameter at ... -
Ecological, Recreational and Educational Potential of a Small Artificial Wetland in an Urban Environment
(African Journal of Aquatic Science, 2019-11)Pertinent questions remain on whether small, artificial wetlands, such as abandoned quarries play any ecological or socio-economic role in the environment. To increase information on roles played by small-sized artificial ... -
Fine-scale habitat heterogeneity influences browsing damage by elephant and giraffe
(Wiley Publishers, 2020-06)Effects of large mammalian herbivores on woody vegetation tend to be heterogeneous in space and time, but the factors that drive such heterogeneity are poorly understood. We examined the influence of fine-scale habitat ... -
Trend and Variability in Interannual Air Temperature Over South West Mau Forest, 1985 - 2015
(Journal of Natural Sciences Research, 2020)Globally high altitude forest regions are considered to be more prone to rapid warming. These regions have also shown great seasonal and inter annual temperatures variability. In Kenya mean annual temperatures increased ... -
Carbon Sequestration by the Above Ground Biomass Pool in the South West Mau Forest of Kenya, 1985 - 2015
(Journal of Environment and Earth Science, 2020)Forests are important for regulation of the global carbon balance. Increase in forest biomass enhances atmospheric carbon sequestration while decrease in forest biomass contributes to carbon dioxide emissions. World over, ... -
Assessment of drivers of forest changes using multi-temporal analysis and boosted regression trees model: a case study of Nyeri County, Central Region of Kenya
(Modeling Earth Systems and Environment, 2020-05-06)The Central Region of Kenya has undergone significant changes in land cover due to a broad range of drivers. These changes are more pronounced in forestland conversions. Past researches within the study area have identified ... -
Influence of Adherence to Quality Management System Standards on Access to Water and Sanitation Services in Kenya
(IOSR Journal Of Humanities And Social Science, 2018-02)In Kenya, over 3,100 children die annually for using unsafe water and poor sanitation. In the 2015/2016 financial year, access to water in Kenya stood at 54% for urban and 51% for rural areas. This low access to water and ... -
Impact of aquaculture development on water quality of fish ponds in gatundu North and south sub-counties, Kenya
(International Journal of Fisheries and Aquatic Studies, 2019-06)Aquaculture development in Kenya has increased in the recent past due to Government support, however, information on its influence on water quality is scanty. This study looked at the influence of fish culture on water ... -
PCBs in fish and their cestode parasites in Lake Victoria
(Environ Monit Assess, 2016)Polychlorinatedbiphenyls(PCBs)areclassified as persistent organic pollutants (POPs) regulated by the Stockholm Convention (2001). Although their production and use was stopped almost three decades ago, PCBs are environmental ... -
Different levels of probiotics affect growth, survival and body composition of Nile tilapia (Oreochromis niloticus) cultured in low input ponds
(Elsevier, 2019)A 7-month experiment was carried out to determine the effects of different levels of probiotics (baker’s yeast (Saccharomyces cerevisiae) and Bacillus subtilis) on Nile tilapia (Oreochromis niloticus) reared in low input ... -
Application Of Hydrological Models In Poorly Gauged Watersheds: A Review Of The Usage Of The Soil And Water Assessment Tool (SWAT) In Kenya
(International Journal of Scientific & Technology Research, 2017-08)In water-scarce developing countries, river basins are some of the most valued natural resources, but many are poorly gauged and have incomplete hydrological and climate records. In the recent years, tropical rivers are ... -
Tree resprout dynamics following fire depend on herbivory by wild ungulate herbivores
(Journal of Ecology, 2019-04)1. Savanna tree cover is dynamic due to disturbances such as fire and herbivory. Frequent fires can limit a key demographic transition from sapling to adult height classes in savanna trees. Saplings may be caught in a ‘fire ... -
Sustainable Utilization of Wetlands Resources in Selected Areas of Nyamira County, Kenya
(Research journali’s Journal of Geography, 2015)Researches on wetland utilization in Kenya focus more on wetlands located in the ASALs and Lowland areas giving less emphasis to those in high agricultural potential highland areas. This paper examined the utilization of ...
