Species and treatment

Plant nitrogen concentration (%)

Substrate nitrogen concentration (%)

Z. matrella

Wet

0.77

±

0.05

b^z

0.29

±

0.01

n.s.^y

O. japonicus

Wet

1.05

±

0.02

c

0.27

±

0.01

S. mexicanum

Wet

0.65

±

0.02

a

0.28

±

0.01

Dry

0.65

±

0.02

a

0.29

±

0.01

Non

0.66

±

0.01

a

0.28

±

0.02