Abstract

It has been observed that anthropogenic activities namely, farming, tree harvesting, seasonal fire regimes, introduction of exotic tree species like Eucalyptus and Greviella, and collection of herbs for medicinal use are going on and form a major threat for the orchid Polystachya fusiformis (Thou.) Lindl. This study determined the relative abundance and distribution of the species Polystachya fusiformis (Thou.) Lindl. in the Manga range ecosystem of Kisii, Western Kenya during two flowering seasons. Other results of the present study were analyzed with SPSS version 17 for paired sample correlations, OriginPro7 t-Test and ANOVA, Minitab 16 chi-square test. From the analysis there is a significant correlation between altitude and number of orchid population clusters with a p-value of 0.008 in the distribution of Polystachya fusiformis (Thou.) Lindl. which led to rejection of the null hypothesis. The Levene

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