IQ Derbyshire Branch recently welcomed Andy Littler, a highly experienced quarry manager and biodiversity advocate, to speak at one of its technical evenings. With over four decades in the industry, Andy has led numerous restoration projects that showcase how post-quarry landscapes can significantly contribute to biodiversity. The event offered practical insights into nature-positive approaches in quarrying.
Restoring nature through quarrying
Andy opened the session by addressing the alarming decline in UK biodiversity and highlighted the unique role the minerals industry plays in reversing this trend. “Old quarries with poor nutrient soils, undulating ground, and varied geology often have much greater biodiversity than intensively managed agriculture,” he explained.
He then presented a series of successful restoration schemes, each emphasising the ecological value of post-quarry landscapes. These projects showcased accessible techniques that can transform even the harshest quarry environments into vibrant ecosystems.
Key themes and techniques in Quarry Restoration
Hard rock quarry face restoration
Andy shared how nutrient-poor materials like scalpings, dust, and bare rock can actually benefit biodiversity. These substrates limit grass growth, allowing wildflowers to flourish. In turn, wildflowers support a variety of insects, providing both nectar and breeding habitats.
Figures shared during the talk illustrated innovative design features such as roll-over slopes and scree at the quarry’s edge. These uneven features support Daleside habitats, rich in native species. He also advised planting quarry benches early to avoid future inaccessibility and monocultures dominated by pioneer species.
Aligning with local biodiversity action plans
Understanding local planning goals can guide effective restoration strategies. Andy encouraged dividing restoration areas into distinct habitats based on target species and ecological goals. For example:
• Using heathland turf relocation techniques
• Planting native species like oaks, which support over 400 insect species, unlike non-natives like Rhododendron that offer little ecological value
• Ensuring tree planting is done on uncompacted ground to support healthy root development
Woodland and understory management
Beyond tree planting, Andy emphasised managing woodlands to support a multilayered ecosystem. Creating an understory and piling brash can provide essential shelter and breeding grounds for insects and small wildlife.
The value of specialist advice
Andy stressed the importance of consulting experts to avoid unintended ecological harm, even with well-meaning efforts.
Branch Chair Chris Rowan summed up the evening’s sentiment: “Your passion for biodiversity is an example to everyone, but particularly for quarry managers.”
The session served as a compelling reminder of how the minerals industry can actively contribute to ecological resilience.
For those interested in inviting Andy to share his insights at other branch events, he can be contacted at littler.andy@yahoo.co.uk.
