Supplement to: Miller, Cale A; Yang, Sylvia; Love, Brooke A (2017): Moderate Increase in TCO2 Enhances Photosynthesis of Seagrass Zostera japonica, but Not Zostera marina: Implications for Acidification Mitigation. Frontiers in Marine Science, 4, https://doi.org/10.3389/fmars.2017.00228