Phosphorus–Algal Bloom Relationships in Large Lakes of South Florida: Implications for Establishing Nutrient Criteria

摘要: ABSTRACT A simple cross-tabulation procedure was used to examine the relationship between total phosphorus (TP) concentration and algal bloom frequencies, based on chlorophyll a (Chl a), in seven large south Florida lakes. Monthly data from 1995–2000 were sorted by lake TP concentration. For each lake, sub-divided into five intervals of equal sample size, frequency occurrence Chl >20, 40, 60 μg L−1 determined plotted against median interval. “Critical” concentrations, at which there rapid increase frequency, examined visual inspection these plots. There considerable variation among lakes regard TP. >20 L−1, rise occurred ranging below 30 greater than 40 L−1. >40 began concentrations above 70 The not related la...