Assessing Invertebrate Biodiversity in Gullele Botanic Gardenduring Wet Season.
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Date
2019-09-09
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Addis Ababa University
Abstract
Gullele Botanic Garden contains diverse types of invertebrates. The diversity,
distribution, frequency, density and abundance of these invertebrates were investigated
using 28 quadrats which were located at different habitat types. The study found that
Gullele Botanic Garden support the presence of invertebrates in large quantity in mixed
forest habitat. A total of 2854 invertebrate specimens belonging to 42 families were collected
and recorded in the Gullele Botanical Garden. Higher diversity and evenness of
invertebrates were observed in the mixed foresthabitat. On the other hand, the least evenness
and diversity of invertebrates was observed in the grassland forest habitat in the study
season. Based on jaccard's similarity index, the highest similarity was observed between
mixed forest and grassland forest habitats.. The lowest similarity was observed between
natural forest habitat and artificial forest habitat. Abundance of food on species of
vegetation, stability of the habitats, human activities and settlement inside determined
invertebrate diversity in the study areas.During data collection in Gullele Botanic Garden,
careful observation showed that invertebrates had both positive and negative effect for
humans, animals and insects. The positive effects were increasing soil
fertility(earthworms),nutrient cycling(ants),increasing the rate of soil nutrient
cycling(beetles) and indicators of environmental change and habitat disturbance(insects).
Conversely, the negative effects were plant drying(termites) and attacking
roots,trunks,stems,leaves, flowers ,seeds ,fruits and saps of vascular system(phytophagous
invertebrates).
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Keywords
Invertebrate Biodiversity, Habitat Types, Abundance, Frequency, and Diversity