Table 2 Summarized molar TOC:TN, TOC:TP and TN:TP ratios for global lake water and lakes with different trophic states.

From: Global Landscape of Total Organic Carbon, Nitrogen and Phosphorus in Lake Water

 

TOC:TN

TOC:TP

TN:TP

Global lakes

21 ± 2.3 (20.64–21.79)

1467 ± 2.9 (1426.92–1508.00)

74 ± 2.5 (72.31–76.02)

Lakes divided by trophic states

 Oligotrophic

nd

2185 ± 2.5 (2111.54–2260.48)

129 ± 1.9 (125.37–132.98)

 Mesotrophic

nd

1387 ± 2.3 (1338.14–1436.81)

71 ± 1.8 (68.77–72.58)

 Eutrophic

nd

375 ± 2.7 (349.54–403.09)

35 ± 2.7 (33.17–36.90)

  1. Values in parentheses represent 95% confidence intervals. TOC, total organic carbon; TN, total nitrogen; TP, total phosphorus; nd, not determined.
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