Biodiversity International Journal Research Article Open Access Impact of invasive alien plant, Xanthium strumarium, on species diversity and composition of invaded plant communities in Borena zone, Ethiopia Abstract Volume 1 Issue 1 - 2017 Biological invasion is considered as the second greatest global threat to biodiversity. Amare Seifu, Nigussie Seboka, Manaye An IAPS, Xanthium strumarium, is widely spread in the agricultural land, roadside, near stagnant water and disturbed land of Borena Zone, Oromia Region. However, its Misganaw, Tesfaye Bekele, Edget Merawi, impact on diversity and floristic composition of the invaded plant communities has not Ashenafi Ayenew, Girum Faris been determined. Therefore, the objective of this study was to determine the impact Genetic Resources Access and Benefit Sharing Directorate, of Xanthium strumarium, on the species diversity and composition of invaded plant Ethiopian Biodiversity Institute, Ethiopia communities in Borena Zone. Accordingly, to examine its effects of invasions on the Correspondence: Amare Seifu, Genetic Resources Access species diversity and composition of invaded communities, ninety six 1m2 quadrats and Benefit Sharing Directorate, Ethiopian Biodiversity Institute, were sampled (48 quadrats for invaded and 48 for non-invaded or control).There were Addis Ababa, Ethiopia, Tel +251916595709, 70 species found in the non-invaded areas as compared to 31 in the invaded areas. Email
[email protected] The number of species decreased by 55.71% in Xanthium strumarium invaded area as compared to control. The mean evenness value of the entire invaded sampled study Received: May 26, 2017 | Published: June 30, 2017 sites was 0.27 indicated that 27% of the plant communities had uniform distribution while the mean evenness value of the controls samples was 0.74 indicated that 74% of the plant communities had uniform distribution.