Mangrove biomass and root architecture in recycled glass sand, SE Louisiana 2023-2024

As coastal regions experience accelerating land loss, artificial substrates may be useful in restoration efforts to replenish sediment and facilitate plant colonization. Recycled glass sand is a potential artificial substrate for marsh building due to its sustainability, availability, and similarity to natural substrates. However, differences in texture and availability of microbiota necessitate investigating how it affects plant growth. We tested the effect of three substrates (conventionally used dredged river sand, recycled glass sand, and a 50:50 mix) and inoculation with natural soil microbes on the biomass and root architecture of black mangrove (Avicennia germinans) in a 5.5 month greenhouse experiment.