Environmental Engineering Reference
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A
100
10
100
1000
10000
g L
-1
)
Total N (
μ
B
100
10
1
0
100
1000
10000
g L
-1
)
Total N (
μ
C
100
10
1
0
1
10
100
1000
Total P (
μ
g L-1)
FIGURE 17.6
Relationships of total nitrogen to fish biomass (A) and chlorophyll to total
N (B) and total P (C) in 67 Florida lakes. Note that the relationship between fish and nutri-
ents is weaker than that between chlorophyll and nutrients (data from Bachman
et al.,
1996).
100
10
1
N:P < 10
10< N:P < 25
N:P > 25
0
10
100
1000
g L
-1
)
TP (
μ
FIGURE 17.7
Relationship between mean growing season concentrations of total P (TP)
and chlorophyll in 228 temperate lakes coded by N:P ratios (corrected data plotted follow-
ing Smith, 1982).
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