Variability in the Structure of Planktonic Microalgae Assemblages in Water Column Associated with Posidonia oceanica (L.) Bed in Tunisia

Table 2

Analysis of variance ANOVA of the abundances of major groups of microalgae and cyanobacteria in prospected stations.

	df	MS	𝐹	𝑃	Tukey test
Total abundance
Habitat	3	132843498	852.876	<0.0001	F > P = T > U
Residuals	44	155759.422
Total	47
Dinoflagellates
Habitat	3	262690.972	7.221	<0.0001	F = P > T = U
Residuals	44	36377.841
Total	47
Diatoms
Habitat	3	124622282	1675.147	<0.0001	F > T = P > U
Residuals	44	74394.839
Total	47
Cyanobacteria
Habitat	3	3333.333	2.047	0.121	n.s.
Residuals	44	1628.788
Total	47
Toxic dinoflagellates
Habitat	3	316857.639	11.126	<0.0001	F = P > T = U
Residuals	44	28480.114
Total	47
Toxic cyanobacteria
Habitat	3	5190.972	9.533	<0.0001	F > P = T = U
Residuals	44	544.508
Total	47

F: fringing reef meadow, P: plain meadow, U: unvegetated station, and T: tiger meadow, ns.: not significant.