<p dir="ltr">Discrete water samples were collected opportunistically, 0.5–1 m above cement block with the loggers, in both dry and wet seasons on multiple days to determine nutrient concentrations. Nitrate, nitrite, ammonium and phosphate concentrations (μmol L<sup>−1</sup>) were measured using a Skalar SAN<sup>++</sup> system autoanalyzer.</p>