Supplementary Table I. Correlations of measured variables in the present study and the
equation describing each relationship (if the P-value was <0.05), r2, and P-values.
Site
Independent
Dependant
Equation
r2
P-value
CFR 1
Length
C:N
C:N = 0.63L + 0.56
0.29
0.049*
CFR 2
Length
C:N
C:N = 0.14L + 3.8
0.35
0.008*
MR 1
Length
C:N
NA
0.05
0.37
MR 2
Length
C:N
C:N = 0.27L + 3.1
0.24
0.028*
CFR 1
Length
δ13C
δ13C = 0.53L – 30.5
0.35
0.026*
CFR 2
Length
δ13C
δ13C = 0.36L – 27.9
0.48
0.001*
MR 1
Length
δ13C
NA
0.03
0.47
MR 2
Length
δ13C
δ13C = 0.25L – 28.8
0.26
0.020*
CFR 1
Length
δ15N
NA
0.007
0.77
CFR 2
Length
δ15N
NA
0.004
0.79
MR 1
Length
δ15N
NA
0.0006
0.92
MR 2
Length
δ15N
NA
0.06
0.32
CFR 1
C:N
δ13C
δ13C = 0.58[C:N] – 29.0
0.57
0.002*
CFR 2
C:N
δ13C
δ13C = 1.1[C:N] – 30.7
0.24
0.034*
MR 1
C:N
δ13C
δ13C = 0.84[C:N] – 32.5
0.59
<0.0001*
MR 2
C:N
δ13C
δ13C = 0.70[C:N] – 30.1
0.62
<0.0001*
CFR 1
C:N
δ15N
NA
0.006
0.80
CFR 2
C:N
δ15N
NA
0.14
0.11
MR 1
C:N
δ15N
δ15N = -0.16[C:N] + 8.7
0.25
0.030*
MR 2
C:N
δ15N
δ15N = -0.15[C:N] + 8.6
0.29
0.015*
MR
C:N
δ15N
δ15N = -0.16[C:N] + 8.6
0.33
0.0001*
CFR1
Condition
C:N
NA
0.009
0.74
CFR2
Condition
C:N
NA
0.001
0.90
MR1
Condition
C:N
NA
0.17
0.11
MR2
Condition
C:N
NA
0.03
0.44
MR
Condition
C:N
K = 0.040[C:N] + 1.4
0.13
0.025*
*, α ≤ 0.05
NA = Not applicable
CFR = Clear Fork River
MR = Mad River
Supplementary Figure 1. Ammocoete condition factor (K) vs. C:N ratio for (a) the Clear Fork
River and (b) the Mad River study sites. Black circles are Clear Fork River 1, gray circles are
Clear Fork River 2, black squares are Mad River 1, and gray squares are Mad River 2. The
correlation indicate for the Mad River is for both sites combined.