Biodiversity in urban landscapes – assessing trimmed habitats and wild zones within the UCC campus
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Date
2025-09-21
Authors
O'Mahony, Paula
Journal Title
Journal ISSN
Volume Title
Publisher
University College Cork
Published Version
Abstract
Although urban landscapes present significant challenges for pollinator biodiversity, they can also support diverse plant–pollinator communities when managed properly. To address this question, I investigated how four different grassland management regimes implemented at the University College Cork campus (Ireland) affected pollinator activity, floral diversity, pollen viability, and soil organic matter (SOM) content. From June to September 2024, fieldwork was carried out weekly across Highly Managed (HM), No Mow (NM), Planted Meadow (PM), and Unmanaged (UM) sites. Using a wide range of methods (e.g., Flower-Insect-Timed (FIT) counts, floral surveys, pollen viability staining), I observed a total of 737 pollinator visits, with activity varying significantly between management regimes (χ² = 40.73, p < 0.001). Highly Managed sites sustained the lowest diversity and visitation, while Planted Meadows and Unmanaged sites supported the highest. Seasonal activity peaked in mid-summer, and pollen analysis confirmed high viability (>80%) across most wildflower species, underscoring their value as nutritional resources. SOM was highest in Unmanaged sites and lowest in Planted Meadows, reflecting long-term differences in management and organic inputs. The findings of this study suggest that targeted, low-intervention practices (e.g., extending no-mow periods, creating planted meadows, and retaining areas of natural succession) contribute to increased pollinator visitation, enhanced floral resources, and support for viable pollen production in urban grasslands. By demonstrating a clear link between floral diversity, pollinator activity, and resource quality, the results show how management choices directly shape ecological outcomes. Together, these findings provide evidence-based guidance for urban biodiversity strategies, complementing initiatives such as the All-Ireland Pollinator Plan, and illustrate the potential for universities and other institutions to function as living laboratories for conservation efforts.
Description
Controlled Access
Keywords
Urban biodiversity , Pollinator activity , Grassland management , Landscape and urban planning
Citation
O'Mahony, P. 2025. Biodiversity in urban landscapes – assessing trimmed habitats and wild zones within the UCC campus. MRes Thesis, University College Cork.