Table 3. Relative growth rates in DBH (RDGR) and height (RHGR) of T. distichum and T. ascendens saplings after experiencing three water level change cycles (means ± S.E., n = 9).

Index	Treatment†	T. distichum	T. ascendens
RDGR (mm mm-1 a-1)	SS	0.677 ± 0.034Aa‡	0.658 ± 0.028Aa
	MS	0.637 ± 0.028Aab	0.604 ± 0.028Aa
	DS	0.56 ± 0.025Ab	0.478 ± 0.029Bb
RHGR (m m-1 a-1)	SS	0.382 ± 0.01Aa	0.359 ± 0.009Aa
	MS	0.297 ± 0.007Ab	0.313 ± 0.007Ab
	DS	0.258 ± 0.011Ac	0.256 ± 0.01Ac

^†Shallow submergence (SS), moderate submergence (MS) and deep submergence (DS).

^‡According to Tukey’s test, the values with different letters are significantly different at the 0.05 level. Lower case letters represent the differences in RDGR and RHGR between the treatments within each species, whereas the upper case letters represent the differences between the two species under the same treatment.