Ecological Archives E096-042-A3

Erin R. Hotchkiss and Robert O. Hall, Jr.. 2015. Whole-stream 13C tracer addition reveals distinct fates of newly fixed carbon. Ecology 96:403416. http://dx.doi.org/10.1890/14-0631.1

Appendix C. Fate of 13C tracer in benthic organic C pools from 1–44 d after the 13CDIC tracer addition.

Table C1. Fate of 13C tracer in benthic C pools (algae, biofilm on rocks, fine benthic particulate organic carbon, and bryophytes). ND = days without data to estimate 13C fate.

Day

Pool

g 13C
reach-1

% of 13C
added

% of 13C remaining after tracer addition

1

Algae

0.067

0.44

8.58

Biofilm

0.620

4.05

78.68

fbPOC

0.044

0.29

5.58

Bryophytes

0.057

0.37

7.23

Total

0.788

5.15

100

3

Algae

0.083

0.54

10.53

Biofilm

0.458

2.99

58.12

fbPOC

0.047

0.30

5.96

Bryophytes

ND

ND

ND

Total

0.587

3.84

74.49

6

Algae

0.090

0.59

11.42

Biofilm

0.189

1.23

23.98

fbPOC

0.035

0.23

4.44

Bryophytes

ND

ND

ND

Total

0.314

2.05

39.85

9

Algae

0.049

0.32

6.22

Biofilm

0.342

2.23

43.40

fbPOC

0.002

0.01

0.25

Bryophytes

ND

ND

ND

Total

0.393

2.57

49.87

16

Algae

0.030

0.20

3.81

Biofilm

0.577

3.77

73.22

fbPOC

0.030

0.20

3.81

Bryophytes

0.044

0.29

5.58

Total

0.681

4.45

86.42

23

Algae

0.019

0.13

2.41

Biofilm

0.139

0.91

17.64

fbPOC

0.015

0.10

1.90

Bryophytes

0.030

0.20

3.81

Total

0.204

1.33

25.89

30

Algae

0.015

0.10

1.90

Biofilm

0.209

1.37

26.52

fbPOC

0.008

0.05

1.02

Bryophytes

0.020

0.13

2.54

Total

0.251

1.64

31.85

44

Algae

0.009

0.06

1.14

Biofilm

0.113

0.74

14.34

fbPOC

0.012

0.08

1.52

Bryophytes

0.024

0.16

3.05

Total

0.159

1.04

20.18


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