New sampling for the study of the relationship between dichotomies and photosynthetic efficiency and composition in tidal gradients in Fucus vesiculosus: laboratory experiments

On June 27rd, we visited Testal Beach (Ría de Noia y Muros) to collect Fucus vesiculosus specimens at different intertidal heights, along with local water samples. After an acclimatization period in the laboratory under controlled conditions, the algae underwent a desiccation cycle simulating natural tidal regimes. Throughout this process, we monitored chlorophyll fluorescence and spectral reflectance, and finally, the samples were processed for trace element determination (PTEs) and analyzed using FTIR.