C/N ratio of A. gibberosa (16 and 19, respectively;
F
¼ 36:70; Po0:0001) compared to 300 and
600 mgNg
3;8
1
agar, where the C/N ratio was 9. The
d
15
N value of A. gibberosa ranged from 0.1% to
3.1% and tended to decline with higher amounts of
N in the agar (F
3;8
¼ 2:89; P ¼ 0:1021). The d
C
values ranged between 11.0% and 13.1% and
increased with the N concentration of the agar
(F
3;8
¼ 4:69; P ¼ 0:0357).
13