Supplementary Figure 1. LC-MS/MS chromatograms for BMAA, DAB and AEG standards (a, b), extracts of phytoplankton (c, d) and zooplankton (e, f) using HILIC direct analysis (a, c, e) and precolumn AQC-derivatization method (b, d, f).
Supplementary Figure 2. Percent of diatom and dinoflagellate (%), and cell density (cell m-3) in the phytoplankton net samples collected in (a) January, (b) March, (c) June, and (d) September, from the Jiaozhou Bay.
Supplementary Figure 3. Average concentrations of BMAA in phytoplankton and zooplankton samples collected from 12 sampling stations in Jiaozhou Bay during four seasons.
Supplementary Figure 4. The highest trophic magnification factor (TMF) from phytoplankton to zooplankton at different sampling stations during four seasons. The sampling station C1 has not been given TMF value because BMAA was not detected in zooplankton in January and not detected in phytoplankton in other seasons.