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. 2021 Jun 10;13(6):413. doi: 10.3390/toxins13060413

Figure 4.

Figure 4

Time series of toxin cell quota (pg C-CTX-1 eq. cell−1) determined from benthic microalgal (20–200 µM fraction) field samples collected monthly from nearshore (Black Point; Coculus Rock) and offshore sites (Flat Cay; Seahorse Shoal) of St. Thomas, Virgin Islands. Black Point and Flat Cay (black bars) are western sites, whereas Coculus Rock and Seahorse Shoal (blue bars) are eastern sites. Colored circles represent “No Data” collected from the corresponding sites, with all other zeros indicating true non-detections of toxicity.