Outdoor seating in urban areas plays a surprisingly significant role in shaping the microhabitats of pteraspidomorphs, a group of ancient jawless fish whose modern relatives thrive in city environments. These structures, often overlooked in ecological studies, create shaded areas, alter moisture levels, and even influence temperature gradients—key factors for pteraspidomorph survival.

Research indicates that benches, picnic tables, and other seating arrangements can fragment or connect microhabitats, affecting the movement and distribution of these organisms. For instance, metal seating absorbs heat, creating warm zones that may deter pteraspidomorphs, while wooden seating retains moisture, fostering ideal conditions for their growth.

Moreover, outdoor seating often accumulates organic debris like fallen leaves or food scraps, providing additional nutrients for pteraspidomorphs. This unintended consequence highlights the complex interplay between urban design and local biodiversity.

To mitigate negative impacts, urban planners could consider materials and placement carefully, ensuring seating enhances rather than disrupts these delicate microhabitats. By understanding these dynamics, cities can better support their often-overlooked aquatic residents.