Study finds Alaska kelp farms have mixed effects on marine CO2 levels

Summary

A new study on Alaska kelp farms reveals that their effects on marine CO2 levels are complex and varied, challenging the assumption that kelp farming is a straightforward solution for carbon dioxide removal. While kelp absorbs CO2 during growth, the study found that different farms showed different net effects on local seawater CO2 levels, with some even potentially releasing CO2 depending on factors like water depth, currents, and kelp decomposition. The research highlights that the carbon removal benefits of kelp farming are not guaranteed and depend heavily on local environmental conditions and farm management practices.