Unlocking Climate Solutions: The Power of Cultivating Seaweed and Mussels Together

Growing sugar kelp alongside blue mussels is proving beneficial for marine farms. Recent research from Tunely Environmental and Algapelago highlights how this method, known as regenerative aquaculture, not only boosts food production but also improves water quality and marine biodiversity.

Nora von Xylander, a marine biodiversity specialist at Tunely Environmental, explains that these systems contribute significantly to both food supply and environmental health. In models from Scandinavia and France, integrating multiple species has resulted in better efficiency and cost savings. For instance, in Norway, pairing mussels with seaweed is reducing the negative effects of excess waste from mussel farms.

Mussels filter and clarify the water, promoting photosynthesis for the sugar kelp, which in turn absorbs nitrogen and phosphate, creating a healthier ecosystem. “They work together to balance the environment,” von Xylander says.

The Blue Forest project in North Devon, England, is central to this research. Stretching over five hectares with plans to expand to 116 hectares, it’s expected to capture significant amounts of nitrogen, phosphate, and carbon dioxide once fully operational. “This project isn’t just about science; it’s also reviving local marine life,” von Xylander adds, noting that underwater cameras show increasing biodiversity in previously degraded areas.

The project resonates culturally and environmentally. Videos shared online show marine life returning, highlighting community engagement in marine traditions. Von Xylander stresses that England’s maritime history is essential. “Restoring these ecosystems reconnects people to their heritage,” she mentions.

However, scaling up regenerative aquaculture poses challenges, particularly financial ones. With funding, expansions could lead to sustainable growth. “Algapelago needs more resources to grow beyond five hectares,” von Xylander notes.

Moreover, site selection and understanding local ecosystems are crucial for success. Von Xylander warns against introducing non-native species, emphasizing that local knowledge is vital. “It’s important to choose species that suit the area,” she advises.

Opportunities for regenerative aquaculture are expanding, especially in Southern Europe. Countries like Italy and Spain are exploring tailored approaches suited to their unique environments, which von Xylander sees as a hopeful trend. “Emerging initiatives at sea offer a chance for real change in our biodiversity crisis,” she concludes.

As interest grows in the nutritional benefits of seaweed—notably in European diets—it enhances the economic viability of these projects. With increasing awareness about its uses beyond traditional cuisine, seaweed is being recognized as a “superfood,” which could improve its market potential.

In moments like this, it becomes clear: regenerative aquaculture not only has the power to restore our oceans but also to inspire communities. Embracing these innovative methods could pave the way for a more sustainable future.

For further insights on sustainability practices in aquaculture, visit Tunely Environmental.

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