Impact Of Anthropogenic Activities On Tree Species Density And Stem Size Distribution In Kisere Fragment Of The Kakamega Forest, Kenya

Tropical rain forests are under intense exploitation by humans because of their subsistence and commercial values. This study was carried out in Kisere Forest, to determine the impact of anthropogenic activities on density and stem size distribution of tree species. Data on forest use were collected using questionnaires. Tree species data was sampled using quadrats of 20 m x 20 m established at 100 m, 400 m and 800 m along each transect. To determine seedling density 5 m x 5 m plots were established within 20 m x 20 m quadrat and seedlings found within the plots were counted. Analysis of data was done using frequencies, Pearson Chi-square test, one-way ANOVA and post hoc LSD tests. Results show the four most targeted tree species were Funtumia latifolia (Staf.), Markhamia lutea (Benth.), Prunus africana (Hook.f.) and Olea capensis (L.) respectively. There was a significant difference in stem and seedling density between the study sites. Trees density differed significantly with distances from the forest edge. DBH mean also differed significantly with distance from the forest edges and within study sites. Stem density, seedling density and human disturbances significant differed with distances. The study shows that Kisere forest is under significant human disturbance. It is therefore recommended that conservation interventions be put in place to conserve Kisere Forest.