Ītkinson EE, Marín-Spiotta E (2014) Land use legacy effects on structure and composition of subtropical dry forests in St. Īguilar-santelises R, Castillo RF (2013) Factors affecting woody plant species diversity of fragmented seasonally dry oak forests in the Mixteca Alta, Oaxaca, Mexico. Therefore, recognizing the role of small fragments for forest conservation, minimizing further disturbance, and undertaking restoration activities in disturbed patches are strongly needed.Ībere F, Belete Y, Kefalew A (2017) Carbon stock of Banja forest in Banja district, Amhara region, Ethiopia: an implication for climate change mitigation.
Generally, forest fragmentation and anthropogenic disturbance resulted in the reduction of diversity, affect woody species structure, and increased the level of disturbance.
DENSITY DISTURBANCE CALCULATION TOOL PATCH
However, the mean basal area, mean seedling, and sapling density per hectare were not significantly affected by patch size and disturbance intensities. Disturbance intensities varied among fragments. Diversity, evenness, the mean number of species, and stem density per hectare significantly increased with increasing fragment size. The mean number of species, evenness, and diversity were significantly different among fragments. A total of 80 woody species, representing 68 genera and 43 families were recorded. Similarities among patches were assessed by Sorensen’s similarity index. ANOVA was used to examine differences in woody species diversity and structural attributes among fragments. To examine the effects of fragment size and anthropogenic disturbances on woody species diversity and structure, regression analysis was performed. The disturbance index was used to assess disturbance intensities. A systematic sampling method was used to collect data and 61 nested plots of each 400 m 2 were used. This study was conducted to determine disturbance levels of patches, and examine the effect of anthropogenic disturbance and fragment size on diversity and structural attributes of woody species. Anthropogenic disturbance and fragmentation have changed the structure and composition of northern Ethiopian forests.
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