Faculty Sponsor
Aimee Dunlap
Final Abstract for URS Program
Human disturbance can alter microhabitats in ways that affect biodiversity, especially in sensitive ecosystems like glades where many animals rely on rocks for thermoregulation and refuge. This study examined how rock displacement by human activity influences species richness and community composition in glade habitats at Shaw Nature Reserve and Victoria Glades Conservation Area. We hypothesized that disturbed rocks would be less suitable for wildlife and would support fewer species. From September to November 2025, about 30 rocks per site were pseudo-randomly selected and monitored. Each rock was classified as displaced or nondisplaced, and all organisms found beneath them were recorded. Shannon diversity indices were calculated for each rock based on total species observations over the study period. Species richness was lower under displaced rocks compared to nondisplaced rocks, supporting our hypothesis. Disturbance also increased over time at both sites, with higher levels observed at the more accessible Victoria Glades. Statistical analysis showed a significant difference in taxon frequencies between rocks that were initially displaced and those that were not. Arachnids and insects were the most frequently observed groups beneath both rock types, while several taxa, including reptiles and amphibians, were observed only beneath nondisplaced rocks. No significant relationship was detected between species richness and rock size. These results suggest that even small human disturbances, such as flipping rocks, can reduce habitat quality for some organisms. Overall, this study highlights the importance of minimizing human impact in protected glade ecosystems. Management strategies such as site monitoring and controlled access may help reduce disturbance and better preserve biodiversity.
Presentation Type
Visual Presentation
Document Type
Article