Table 1. ANOVA results for the effects of block and mechanical disturbance on the growth and diversity indices of the submerged macrophyte communities.

Variable	Block		Disturbance
	F5,15	P	F2,15	P
Biomass	4.10	0.028	42.49	<0.001
No. of nodes	3.35	0.049	20.09	<0.001
Shoot length	2.62	0.091	10.77	0.003
Diversity based on biomass	2.51	0.101	11.15	0.003
Diversity based on node number	1.84	0.192	8.76	0.006
Diversity based on shoot length	2.09	0.150	6.16	0.018