Mean inorganic nutrient and total suspended solid levels at sites within the three study locations by season. Bars in red are those classified as polluted, and those
marked with $ have known discharges of wastewater, derived mainly from tourist facilities. Superscripts (a, b, c) denote homogenous groups defined by Student–Newman-
Keuls post hoc tests. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)