Table 3.

Percentage of fine root mass in the upper 20 cm of soil of the total soil profile (0–40 cm) (means ± SE, n = 6).

Percentage root mass in upper 20 cm of soil	Pioneer zone	Lower salt marsh	Upper salt marsh
Spiekeroog	69.48 ± 4.88a, A	86.16 ± 2.75a, A	82.88 ± 3.54a, A
Westerhever	64.08 ± 3.88a, A	66.05 ± 7.65ab, B	81.26 ± 1.71b, A

Different letters indicate significant differences between zones within a site (a,b) or between sites within a zone (A,B) analyzed by Kruskal-Wallis multiple comparisons (p < 0.05).