Spatial variability in intertidal macroalgal assemblages on the North Portuguese coast: consistence between species and functional group approaches

Table 4 Spatial differences in the biomass of the most important functional groups at the scales of area, location and site (ANOVA; significance level P < 0.05)

Source	Area df = 1			Location (Re) df = 8			Site (Lo (Re)) df = 20			Residual df = 60
Source	MS	F	P	MS	F	P	MS	F	P	MS
Corticated^a	48.532	0.660	0.439	73.206	0.990	0.472	73.882	1.740	0.051	42.357
Articulated calcareous^a	251.904	3.080	0.118	81.897	2.05	0.092	39.925	0.88	0.615	45.5386
Foliose	22.851	5.960	0.041	3.837	1.14	0.379	3.359	1.13	0.343	2.964
Cochran’s C-test	0.323^ns
Corticated filamentous^a	2.346	6.10	0.039	0.385	1.07	0.423	0.360	1.08	0.391	0.333

ISSN: 1438-3888