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. 2018 Jun 6;9:1201. doi: 10.3389/fmicb.2018.01201

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Copyright © 2018 Zhou, Richlen, Sehein, Kulis, Anderson and Cai.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Environmental and biological parameters during a bloom of Alexandrium catenella in Salt Pond, Nauset Marsh, MA, United States. (A) temperature, salinity, and pH; (B) nutrients concentrations (nitrate [NO₃^-], ammonium [NH₄⁺], and phosphate [PO₄^3-]); (C) abundances of A. catenella (black line) and total bacterioplankton (red line) in water samples collected over the course of the A. catenella bloom. Data points represent the mean + SD of triplicate measurements. The single asterisk (^∗) and double asterisk (^∗∗) indicated the significant difference compared with the first time-point (W1) at P < 0.05 and P < 0.01 levels, respectively.