Twenty-Five Years of PSP Toxicity in Galician (NW Spain) Bivalves: Spatial, Temporal, and Interspecific Variations.

After that, there were two new peaks in 2009 and 2011–2012, and then, after a minimum in 2013, there was an increasing trend broken only in 2019.

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Spatial Variation PSP toxicity prevalence showed, in general, a decreasing trend from the southernmost rías to the northeast extreme of the sampling area ( Figure 5 ).

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