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From Degraded Stream to Pollinator Habitat: Little Westham Creek

Written by Anonymous | Apr 24, 2026 6:37:23 PM

Stream restoration projects are often judged too early.

Immediately after construction, sites can appear cleared and exposed, particularly when trees and other vegetation have been removed. On highly visible sites, that early impression can shape how a project is perceived long before it has had a chance to mature.

Starting condition

Before restoration, the Little Westham Creek site at the University of Richmond reflected a familiar pattern of urban stream degradation. The channel had widened and destabilized, trees were in poor condition, and invasive species dominated much of the landscape. The understory lacked diversity, and ecological function was limited despite a dense canopy.

At the same time, the site was largely inaccessible. A trail existed along the corridor, but it was in poor condition and overgrown. Restoration improved not only the stream, but also re-established the corridor as a connected and usable space for both ecological function and community access.

 

The restoration approach

The project focused on more than stabilizing the stream. The goal was to create a system that would function ecologically over time.

Native species were selected based on site-specific conditions, with wetland delineation data guiding plant selection. The floodplain was planted with a mix of species designed to support pollinators, wildlife habitat, and long-term resilience.

Vegetation structure was also considered. Areas of bare soil, pithy stems, and woody material were intentionally included to support different nesting strategies, particularly for native bees.

Invasive species management was treated as an ongoing condition, not a one-time effort.

What changed over time

Five years after construction, the site was evaluated through an insect biodiversity study conducted across the growing season.

Key outcomes:
  • 242 insect taxa identified

  • 91 families across 9 orders

  • 70+ Hymenoptera taxa across 14 families

  • 75 blooming plant species (68% native)

 

Pollinators such as bees, wasps, flies, beetles, and butterflies were well represented, including both ground-nesting and cavity-nesting species. Dragonflies, damselflies, and other insects were also observed in significant numbers, reflecting a broader ecological response.

 

Why it worked

These outcomes were driven by a few key design decisions.

Bloom timing was planned so that nectar and pollen resources were available throughout the growing season. Habitat structure supported different nesting strategies, and plant selection was tied to ecological function, including host plants needed for reproduction.

What this means for your project

Stream restoration is typically evaluated based on physical outcomes, such as channel stability.

But projects like this show that restoration can deliver more.

With intentional vegetation design, restoration sites can support measurable ecological activity and provide long-term value beyond the stream channel itself.

Those outcomes depend on decisions made early in the design process. Once construction is complete, they become much more difficult and costly to change.

Want to understand how these outcomes could translate to your project?

Every site is different, but the decisions that drive ecological performance are made early. Our team can help you evaluate how vegetation strategy and restoration design will influence outcomes on your site.

→ Connect with a RES specialist to discuss your project