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Water Resources Research
Variation of organic matter quantity and quality in streams at
Critical Zone Observatory Watersheds
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S1. Site Description
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Table S2. F-
CZO Date DOC TN Ca Mg S C:N SUVA FI aa-like qu-like
site mo/dy/yr mg/L mg/L mg/L mg/L mg/L -- L/mg*m -- % %
SH 04/13/09 0.92 0.07 7.89 2.97 3.52 12.72 3.59 1.44 10.4% 67%
SH 04/27/09 1.04 0.06 7.75 3.05 3.52 18.25 4.12 1.42 7.0% 70%
SH 05/11/09 1.10 0.05 6.76 2.70 3.54 21.01 3.73 1.44 7.2% 69%
SH 05/25/09 1.27 0.09 12.47 3.82 3.49 14.07 4.88 1.42 7.6% 71%
SH 06/08/09 1.24 0.09 9.28 3.45 3.41 14.26 5.49 1.39 7.5% 70%
SH 06/22/09 1.74 0.08 5.27 2.49 3.33 23.11 3.67 1.39 5.3% 69%
SH 07/06/09 1.54 0.15 17.26 4.95 3.26 10.48 5.45 1.43 7.6% 71%
SH 07/21/09 2.94 0.18 17.70 5.48 2.99 16.30 5.20 1.42 6.7% 70%
SH 08/03/09 2.91 0.20 18.41 5.94 3.08 14.54 5.06 1.42 6.2% 71%
SH 08/17/09 4.31 0.32 22.84 6.54 2.56 13.29 4.82 1.41 6.5% 70%
SH 08/31/09 9.23 0.59 17.08 5.10 2.28 15.74 nd* nd* nd* nd*
SH 09/14/09 8.96 0.52 14.62 4.52 2.43 17.22 nd* nd* nd* nd*
SH 09/28/09 11.61 0.41 12.98 4.11 2.78 28.11 nd* nd* nd* nd*
SH 10/12/09 6.30 0.25 17.59 5.25 3.35 25.27 3.73 1.44 8.4% 66%
SH 10/26/09 2.35 0.13 3.52 1.87 3.24 18.59 2.98 1.42 8.2% 68%
SH 11/09/09 1.46 0.15 7.62 2.96 3.51 9.95 3.02 1.44 10.8% 68%
SH 11/20/09 2.63 0.10 10.04 3.90 3.61 25.92 4.61 1.42 7.7% 71%
SH 12/07/09 1.11 0.09 4.78 2.63 3.37 12.62 5.87 1.47 7.6% 70%
SH 12/21/09 1.06 0.07 6.19 2.73 3.51 14.59 3.86 1.46 6.6% 70%
SH 01/04/10 0.90 0.09 8.08 3.05 3.59 9.76 5.20 1.47 7.5% 70%
SH 01/18/10 1.81 0.21 3.58 2.12 3.32 8.53 4.41 1.40 7.8% 70%
SH 01/25/10 7.54 0.31 2.64 1.49 2.34 24.20 5.24 1.36 4.5% 71%
SH 02/01/10 0.98 0.11 8.04 2.83 3.64 8.95 3.15 1.41 10.4% 72%
SH 02/15/10 0.82 0.12 12.84 3.87 3.86 6.95 6.11 1.45 9.9% 71%
SH 03/01/10 1.02 0.18 8.17 3.28 3.59 5.56 3.15 1.47 11.2% 69%
SH 03/15/10 1.55 0.12 4.38 2.12 3.49 12.54 2.39 1.42 6.8% 69%
SH 03/29/10 1.94 0.14 3.24 1.95 3.20 13.83 3.20 1.39 nd** nd**
SH 04/12/10 0.98 0.11 12.48 3.58 3.61 9.26 5.83 1.48 10.5% 69%
SH 04/26/10 2.50 0.21 14.72 4.15 3.66 11.93 5.40 1.40 6.0% 72%
SH 05/09/10 1.40 0.12 9.92 3.34 3.25 11.37 3.57 1.44 9.9% 72%
SH 05/23/10 4.15 0.19 11.06 3.35 2.99 21.84 nd* nd* nd* nd*
SH 06/07/10 1.74 0.19 19.82 5.13 3.23 9.00 4.94 1.44 8.4% 71%
SH 06/21/10 1.85 0.27 22.11 5.57 2.84 6.84 4.16 1.54 7.1% 70%
SH 07/05/10 4.80 0.75 22.39 5.74 1.35 6.37 3.44 1.51 8.1% 66%
SH 11/19/10 2.39 0.09 3.91 2.05 3.23 26.12 3.39 1.41 7.1% 69%
SH 12/03/10 1.91 0.08 4.08 2.21 2.90 24.05 2.04 1.43 5.3% 69%
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Table S2. Stream water quality data, continued. X
CZO Date DOC TN Ca Mg S C:N SUVA FI aa-like qu-like
site mo/dy/yr mg/L mg/L mg/L mg/L mg/L -- L/mg*m -- % %
SS 04/28/09 2.49 0.08 2.27 0.36 0.08 33.25 4.53 1.29 3.9% 68%
SS 05/26/09 2.51 0.08 3.19 0.49 0.08 29.55 4.74 1.30 4.1% 70%
SS 06/29/09 1.72 0.06 3.76 0.56 0.06 29.93 4.55 1.31 7.2% 67%
SS 07/28/09 1.25 0.04 4.11 0.65 0.07 29.62 4.10 1.31 4.1% 69%
SS 08/25/09 1.11 0.04 4.46 0.68 0.06 27.60 4.16 1.36 6.2% 67%
SS 09/29/09 1.03 0.08 7.14 1.08 0.06 13.45 3.68 1.40 16.7% 62%
SS 10/27/09 1.63 0.12 3.58 0.56 0.09 13.12 4.23 1.36 9.2% 68%
SS 12/29/09 1.62 0.08 3.14 0.56 0.04 20.64 4.95 1.35 7.2% 67%
SS 02/02/10 1.55 0.07 3.47 0.60 0.03 21.50 3.10 1.36 4.9% 68%
SS 03/04/10 2.11 0.08 3.44 0.59 0.04 26.71 4.83 1.36 4.1% 68%
SS 04/01/10 2.26 0.12 3.28 0.57 0.05 18.53 5.09 1.35 4.3% 69%
SS 06/08/10 2.71 0.09 1.94 0.31 0.00 31.45 3.65 1.31 3.9% 69%
CZO Date DOC TN Ca Mg S C:N SUVA FI aa-like qu-like
site mo/dy/yr mg/L mg/L mg/L mg/L mg/L -- L/mg*m -- % %
BC 05/15/09 6.82 0.26 4.15 2.33 1.45 26.26 5.66 1.30 5.3% 73%
BC 07/08/09 6.25 0.26 7.33 3.56 0.82 24.26 1.63 1.34 4.4% 71%
BC 07/14/09 6.01 0.23 8.10 3.92 0.77 26.40 4.74 1.36 4.1% 71%
BC 08/20/09 2.64 0.19 8.37 4.06 1.06 14.26 4.51 1.35 4.0% 72%
CZO Date DOC TN Ca Mg S C:N SUVA FI aa-like qu-like
site mo/dy/yr mg/L mg/L mg/L mg/L mg/L -- L/mg*m -- % %
CR 07/31/09 1.83 0.35 6.15 2.69 4.34 5.16 3.45 1.43 4.2% 70%
CR 08/29/09 3.20 0.35 6.79 2.90 4.02 9.27 3.47 1.41 5.1% 70%
CR 10/02/09 1.33 0.40 6.46 2.92 4.77 3.36 3.16 1.46 7.8% 67%
CR 11/11/09 1.48 0.25 5.81 2.62 4.81 5.99 3.39 1.45 8.0% 67%
CR 12/11/09 1.34 0.48 5.48 2.76 5.37 2.77 2.17 1.47 6.5% 67%
CR 01/19/10 1.01 0.46 6.17 2.65 5.33 2.20 3.57 1.45 6.1% 68%
CR 02/21/10 0.93 0.45 5.40 2.61 5.24 2.09 5.04 1.43 nd** nd**
CR 03/28/10 0.96 0.39 5.30 2.61 5.20 2.47 5.11 1.47 4.6% 69%
CR 04/27/10 1.59 0.53 5.22 2.42 4.86 2.98 3.64 1.47 8.9% 67%
CR 05/27/10 1.22 0.45 5.36 2.45 4.63 2.74 3.19 1.45 6.0% 69%
CR 06/22/10 1.22 0.47 5.29 2.36 4.31 2.57 3.78 1.45 5.2% 70%
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Table S2. Stream water quality data, continued. X
CZO Date DOC TN Ca Mg S C:N SUVA FI aa-like qu-like
site mo/dy/yr mg/L mg/L mg/L mg/L mg/L -- L/mg*m -- % %
LQ 08/06/09 3.09 0.14 2.73 1.71 0.61 22.12 4.72 1.31 5.5% 72%
LQ 09/22/09 3.03 0.15 2.15 1.25 0.56 20.64 4.73 1.32 4.8% 72%
LQ 12/10/09 4.13 0.22 2.20 1.43 0.63 18.68 4.38 1.36 4.6% 71%
LQ 01/25/10 1.09 0.13 2.28 1.58 0.51 8.50 3.22 1.38 5.2% 72%
LQ 02/11/10 0.92 0.18 2.75 1.89 0.55 5.11 3.28 1.37 6.2% 71%
LQ 03/02/10 1.25 0.16 2.33 1.66 0.54 7.65 3.44 1.38 6.4% 71%
LQ 03/16/10 0.99 0.18 2.45 1.72 0.54 5.55 2.92 1.35 11.2% 68%
LQ 04/06/10 1.24 0.20 3.23 2.05 0.64 6.28 5.88 1.35 6.5% 70%
LQ 05/11/10 1.82 0.12 2.03 1.29 0.39 15.31 5.38 1.34 5.5% 72%
LQ 06/01/10 3.12 0.28 1.67 1.12 0.41 11.16 5.10 1.31 8.5% 70%
Sites: SS: Southern Sierra California; BC: Boulder Creek Colorado; SH: Shale Hills Pennsylvania; CR: Christina River
Maryland; LQ: Luquillo Puerto Rico.
DOC: dissolved organic carbon, mg C L-1.
TDN: total dissolved nitrogen, mg N L-1.
Ca: dissolved calcium, mg Ca L-1.
Mg: dissolved calcium, mg Mg L-1.
S: dissolved sulfur, mg S L-1.
C:N: ratio of DOC:TN,
dimensionless.
SUVA254, specific ultraviolet
absorbance: absorbance at 254 nm /
DOC concentration, L mg C-1 m-1 .
FI: fluorescence index: fluorescence intensity
ratio at an emission 470 nm / 520 nm, at
excitation 370 nm, dimensionless.
aa-like: amino-acid-like fluorophores. Sum of Fmax values of PARAFAC model components 8 and 13; %.
qu-like: quinone like fluorophores. Sum of Fmax values of PARAFAC model components 2, 4, 5, 7, 9, 11, and 12, %.
nd*: no data because Fe concentrations were too high for analysis (>0.5 mg/L).
nd**: no data because fit of PARAFAC model fit was too poor.
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