Algal Blooms and Cyanotoxins in Jordan Lake, North Carolina

Toxins
Daniel WiltsieElizabeth Fensin

Abstract

The eutrophication of waterways has led to a rise in cyanobacterial, harmful algal blooms (CyanoHABs) worldwide. The deterioration of water quality due to excess algal biomass in lakes has been well documented (e.g., water clarity, hypoxic conditions), but health risks associated with cyanotoxins remain largely unexplored in the absence of toxin information. This study is the first to document the presence of dissolved microcystin, anatoxin-a, cylindrospermopsin, and β-N-methylamino-l-alanine in Jordan Lake, a major drinking water reservoir in North Carolina. Saxitoxin presence was not confirmed. Multiple toxins were detected at 86% of the tested sites and during 44% of the sampling events between 2014 and 2016. Although concentrations were low, continued exposure of organisms to multiple toxins raises some concerns. A combination of discrete sampling and in-situ tracking (Solid Phase Adsorption Toxin Tracking [SPATT]) revealed that microcystin and anatoxin were the most pervasive year-round. Between 2011 and 2016, summer and fall blooms were dominated by the same cyanobacterial genera, all of which are suggested producers of single or multiple cyanotoxins. The study's findings provide further evidence of the ubiquitous nature ...Continue Reading

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Citations

Dec 10, 2020·Toxicological Sciences : an Official Journal of the Society of Toxicology·Rubia M MartinKurt C Marsden
Nov 5, 2020·The Science of the Total Environment·Bishal PaulNayanmoni Gogoi
Dec 16, 2020·Journal of Hazardous Materials·Yiming YangRenhui Li
Dec 15, 2020·Environmental Pollution·Yue HanDaniel R Obenour

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