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Pioneering eDNA Monitoring Validates Sustainable Giant Kelp Farming's Biodiversity Benefits

Implementation Date

May 1, 2024

By

Kelp Blue (in collaboration with The Kelp Forest Foundation)

City

Swakopmund

story image

Description

Kelp Blue, The Kelp Forest Foundation, and NatureMetrics launched the world's first comprehensive eDNA monitoring program for offshore giant kelp farming off Namibia's coast. This groundbreaking 2-year study evaluates biodiversity impacts as large-scale kelp cultivation develops, addressing critical knowledge gaps before global scaling. Monthly eDNA sampling by trained local teams captures ecosystem changes from microorganisms to marine megafauna, establishing robust baselines for sustainable blue economy development. The project demonstrates how kelp farming can boost biodiversity while creating jobs and sequestering carbon, providing scientific validation for responsible aquaculture expansion and pioneering biodiversity credit finance for seaweed ecosystems.

Impact & Result

Environmental: Detected 25+ fish species including vulnerable Sun Fish, endangered African penguins, endemic Cape Elephantfish, plus cetaceans and diverse invertebrates. Established comprehensive biodiversity baseline for sustainable kelp farming validation. Economic: Unlocks pioneering biodiversity credit finance, catalyzes blue economy investment, creates sustainable jobs, strengthens local scientific capacity through eDNA training, supports responsible scaling of kelp cultivation globally.

Solution Spotlight

eDNA enables data on species and ecosystems to be generated at unprecedented scales using DNA traces that organisms leave behind in the environment, especially in water. A simple kit is used to filter water from lakes, rivers or oceans, capturing the DNA traces the filter membrane, which is sent to a laboratory for analysis. In the lab, the DNA is sequenced and sequences are compared against a reference library to identify the species they came from. A single sample of just a litre of water can reveal hundreds of species, ranging from bacteria to blue whales and including both species that live in the water and those living on land nearby. The ease of sampling enables biodiversity to be surveyed in more places, more often, and by a wider range of stakeholders, providing the evidence-base for effective conservation, impact mitigation and restoration of our natural resources.

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