Species Composition, Structure and Regeneration Status of Woody Plants and Anthropogenic Disturbances in Zijje Maryam Church Forest, Ethiopia

Abstract

Abstract Our current study was conducted in Zijje Maryam Church forest, Ethiopia, to explore woody species composition, structure, regeneration status, and anthropogenic disturbances inside the sacred groves. The aforementioned information for adequate conservation and management of the church forest is not well documented. Fifteen main quadrats each having an area of 625m2(25m×25m) were used for vegetation and disturbance data collection. Determination of the sampled quadrants was based on the principle that minimum quadrats give the smallest possible area in which all species occurring in the church forest are present. All woody species with diameter at breast height (DBH) ≥ 2.5cm within the quadrat were identified, counted, and their height and DBH data were recorded. The criterion to start at DBH) ≥ 2.5cm was to exclude seedlings having DBH < 2.5 cm and height ≤ 0.6m. Sapling and seedling data were collected using 45 saplings and 45 seedling quadrat that measured 4 m2 and 1m2, respectively. Vegetation data analysis and ANOVA were used for statistical comparison. A total of 48 woody plant species belonging to 46 genera and 36 families were identified. Fabaceae was the dominant family containing 5 species followed by Rosaceae with 3 species. Total basal area of the church forest was 83.03m2 ha− 1. The density of seedlings, saplings, and matured woody species stem ha− 1 were 15555, 3833, and 865, respectively. Talking these densities, regeneration status of the forest was good. The Shannon diversity and evenness of woody plant species in the forest was high; 3.29 and 0.85, respectively. Juniperus procera 27.67 (9.22%) and Olea europaea were species with the highest IVI. Nearly, 22% of areas of the forest get disturbed and higher anthropogenic disturbances occurred near the edge of the forest. Gathering, clearing, and grazing are the major human disturbances that stakeholders need to tackle for conservation. Zijje Maryam church forest has heterogeneous species composition with varied seedlings and saplings. Therefore, local conservation policies recommended not only protect large forests, but also the small and valuable forests service to the needs of local people.