Streete et al. 2025. Assessing invertebrate biodiversity across contrasting habitat types
by Ashlee Streete, Diana Reyes, Oliver Broun, Lara Martin, and Dr. Allyson Jackson
Abstract
Human land use, driven by agriculture, urbanization, and industrial development, provides essential resources but also leads to widespread habitat loss, fragmentation, and environmental degradation, threatening biodiversity and ecosystem resilience. Community ecology offers a framework for understanding how species interactions, community structure, and environmental changes shape patterns of biodiversity. Invertebrates, which play critical roles in ecosystem functioning, are particularly sensitive to changes in plant structure and community composition. This study investigates how meadows, lawns, and Japanese Knotweed stands on the Purchase College campus influence invertebrate abundance and diversity. Sampling was conducted across six sites using pitfall and sticky traps. Invertebrates were identified to the lowest possible taxonomic level, and Shannon Diversity Index values were calculated by order. Results suggest that meadow habitats support the highest biodiversity. Lincoln Meadow exhibited the greatest overall abundance, while Restoration Meadow showed the highest species richness and evenness. Sticky traps captured groups not represented in pitfall traps, underscoring the importance of using complementary sampling methods. Although honeybee hives were located near one site, their impact on trap captures remains unclear. Overall, these findings highlight the ecological value of structurally diverse, native vegetation in promoting and sustaining biodiversity.