Department of Environmental Studies

Evidence of nutrient translocation in response to smoke exposure by the East African ant acacia, Vachellia drepanolobium

Kimuyu, Duncan M.; Martins, Dino J.; Pierce, Naomi E.; Yekwayo, Inam; Ye, Wenqing; Wu, Donghao; Perez-Martinez, Christian A.; Ziemke, Clayton H.; Kennedy-Yoon, Annina; Darling, Walker S.; Blumstein, Meghan; Dean, Brendan Z. M.; Angier, Katherine I. W.; Rabideau-Childers, Richard (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

Ndiritu, George G.; Terer, Taita; Njoroge, Peter; Muiruri, Veronica M.; Njagi, Edward L.; Kosgei, Gilbert; Njoroge, Laban; Kamau, Peris W.; Malonza, Patrick K.; Muchane, Mary; Gathua, Joseph; Odeny, Dickens; Courtemanch, David (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 ...

Ecological, Recreational and Educational Potential of a Small Artificial Wetland in an Urban Environment

Ndiritu, GG; Gitau, PN; Gichuki, NN (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 ...

Trend and Variability in Interannual Air Temperature Over South West Mau Forest, 1985 - 2015

Kinyanjui, James Mwangi; Mburu, David Mwehia; Kigomo, Mathew Kiura (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

Kinyanjui, Mwangi James; Kigomo, Mathew Kiura; Mburu, David Mwehia; Thuo, Aggrey Daniel Maina; Mundia, Charles Ndegwa (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, ...

Climate Change Perception Among the Pastoralist Women in Narok County

Mashara, Janet Naisoi (Academic Research International, 2018-03)

With regards to the effects of climate change, Kenya has identified its ASALs as the most vulnerable areas to climate change with huge impacts on livestock rearing, small-holder agriculture and tourism, which are the ...

Diversity and Altitudinal Distribution of Understorey Corticolous Lichens in a Tropical Montane Forest in Kenya (East Africa)

Ndiritu, George G.; Kirika, Paul M.; Mugambi, George K.; Newton, Leonard E.; Lumbsch, H. Thorsten (research gate, 2018)

Lichens constitute an important component of tropical forest biodiversity. This study inventoried corticolous lichens and examined their variation in various forest types with varying climatic conditions in Mt. Kenya, East ...

Combined effects of photoperiod and temperature on growth and survival of African catfish (Clarias gariepinus, Burchell 1822) larvae under laboratory conditions

Okoth, Elijah Oyoo; Orina, Paul Sagwe; Rasowo, Joseph; Musa, Safina; Munguti, Jonathan M.; Karisa, Harrison Charo (Taylor and Francis, 2016)

The effect of photoperiod (24L:00D, 12L:12D, and 00L:24D) and temperature (22 ± 1°C and 28 ± 1°C) on performance of Clarias gariepinus larvae was tested. Larvae weighing 3.2 ± 0.24 mg were cultured in aquaria at a stocking ...

Assessing Climate Variability Adaptation and Coping Strategies Among Rural Households in Kenya.

Musyimi, Peter Kinyae; Nduru, Gilbert M; Huho, Julius M; Opiyo, Francis E (Journal of Water Sciences & Environment Technologies, 2018)

The aim of this study is to assess the adopted water scarcity adaptation and coping strategies of rural households to climate variability. It also identifies suitable strategies that minimize the impact of climate variability ...

Spatial scales influence long-term response of herbivores to prescribed burning in a savanna ecosystem

Kimuyu, Duncan M.; Sensenig, Ryan L.; Chira, Robert M.; Githaiga, John M.; Young, Truman P. (CSIRO PUBLISHING, 2017-01)

Both wild and prescribed fire in savanna ecosystems influence habitat use by herbivores by creating or maintaining spatial and temporal heterogeneity in forage quality and vegetation cover. Yet little is known about how ...

Impact of human activities on land degradation IN Lugari subcounty, Kakamega county, Kenya

Kinyanjui, Mwangi James; Wanjala, Wanyonyi Raphael (E3 Journals, 2016-10)

This study investigated the impact of human activities on land degradation in Lugari Sub-County, Kakamega County in Kenya. The study sought to analyze the extent of land degradation; identify the causative factors for land ...

Spatio-temporal dynamics of land use practices on rivers in tropical regions: A case study of Ruiru and Ndarugu Basins, Kiambu County, Kenya

Mwangi, Wambugu; Isaiah, Nyandega; Shadrack, Kıthiia (2017-03)

Land use dynamics are known to cause considerable modifications to the environment with broad and sometimes severe impacts on water quality and aquatic natural resources. In this study, the impacts of land use practices ...

Biomass Energy Resource of the Highland Bamboo (Yushania alpina) and Its Potential for Sustainable Exploitation in Southern Aberdares Forest

Katumbi, Ndirangu Monicah; Kinyanjui, Mwangi James; JM, Kimondo; Mugo, Joseph Mware (Scientific Research Publishing, 2017-08)

Yushania alpina is the only bamboo species native to Kenya and covers about 150,000 ha growing in pure or mixed stands in the montane forests. The Aberdare forest is one of the natural habitats for Y. alpine occupying an ...

Assessing Climate Variability Adaptation and Coping Strategies Among Rural Households in Kenya

Nduru, Gilbert M.; Musyimi, Peter Kinyae; Huho, Julius M.; Opiyo, Francis E. (Journal of Water Sciences & Environment Technologies, 2018-08)

The aim of this study is to assess the adopted water scarcity adaptation and coping strategies of rural households to climate variability. It also identifies suitable strategies that minimize the impact of climate variability ...

Species Richness and Abundance of Birds in and Around Nimule National Park, South Sudan

Okoth, Elijah Oyoo; Simon, Gift Sarafadin (The science publisher, 2016)

Sunlight and sediment improve the environment of a litter biofilm-based shrimp culture system

Gatune, Charles; Vanreusel, Ann; De Troch, Marleen (Inter-Research, 2017-02)

Pre-Disposing Factors Contributing to the Prevalence of Intestinal Parasitic Infections (IPI) among the HIV/AIDS Patients in Bungoma County, Kenya

Wanyama, F.W.; Wanjala, A.M.; Oyoo-Okoth, E. (International Journal of Science and Research (IJSR), 2014-12)

The role of HIV infection on the pathognomomic of HIV infections is not clearly understood. The aim of the current study was to determine the epidemiology of IPI and predisposing factors among HIV/AIDS patients in Bungoma ...