Seascape-Scale Restoration: Reviving UK Coastal Biodiversity

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Earlier this year, a major marine ecology study led by the University of Portsmouth, in collaboration with the Zoological Society of London and the University of Edinburgh, revealed the importance of restoring interconnected coastal habitats such as oyster reefs, kelp forests, salt marshes and sea grass meadows as cohesive ecosystems or “seascapes” rather than in isolation. The researchers emphasise that ecological connectivity is vital to meeting climate and biodiversity goals. In the UK, up to 95% of oyster reefs and 90% of sea grasses have been lost, underscoring the urgent need for large‑scale restoration efforts. The study calls for formal adoption of “seascape restoration” in policy frameworks, recommending updates to marine protected area models and environmental assessment methods that better integrate land–sea restoration strategies.

This integrated approach recognises that connected habitats offer greater resilience and ecosystem services such as improved water quality, enhanced biodiversity and stronger coastal protection than fragmented patches. Case studies cited in the paper include regions like California, where sea grasses thrive adjacent to oyster reefs, and New Zealand, where kelp‑derived carbon supports fish populations, while oyster beds improve water clarity and nutrient removal.

The authors recommend that national strategies formalise seascape‑scale restoration. They urge revising environmental assessments and marine protected area designations to reflect interconnected habitats and advocate for coordinated policy across marine and terrestrial environments.

What this means:
This study signals a paradigm shift in how policymakers and conservationists must approach marine restoration. Fragmented efforts targeting individual habitats are insufficient. Instead, comprehensive, seascape‑scale planning can deliver lasting ecological recovery, support biodiversity, enhance fisheries and coastal resilience, and help the UK meet both national and international climate and biodiversity commitments.

The need to update marine planning frameworks and environmental assessments means the government could soon be prompted to reform regulatory approaches, potentially opening up opportunities for cross‑sector collaboration and funding. For industry and conservation groups, this offers a clear signal: future marine investments or restoration schemes should prioritise interconnected habitat networks and coordinated implementation across land and sea boundaries.

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