Species and

treatment

Substrate dry weight (g/pot)

Substrate carbon concentration (%)

Substrate carbon content (g-C/pot)

Oct-14

Oct-15

Oct-14

Oct-15

Oct-14

Oct-15

Z. matrella

Wet

31.8

±

0.2

33.2

±

0.4

*

－

5.6

±

0.1

7.2

±

0.5

*

n.s.^z

1.77

±

0.03

2.39

±

0.12

*

－

O. japonicus

Wet

29.1

±

0.3

28.2

±

0.5

－

5.4

±

0.2

6.0

±

0.4

1.59

±

0.04

1.69

±

0.06

－

S. mexicanum

Wet

30.5

±

0.3

29.7

±

0.6

n.s.^z

5.0

±

0.2

6.5

±

0.3

*

1.54

±

0.03

1.94

±

0.07

*

n.s.^y

Dry

29.8

±

0.6

6.9

±

0.3

*

2.06

±

0.04

*

Non

30.4

±

0.3

6.2

±

0.4

*

1.92

±

0.09

*