Patterns of nocturnal movement of the long-spined sea urchin Diadema antillarum (Philippi) in Gran Canaria (the Canary Islands, central East Atlantic Ocean)

Table 1 Results of two-way orthogonal ANOVA on the effects of space (refuge) and time (assay) on total mean nocturnal distance travelled by tagged individuals of Diadema antillarum

Source of variation	df	SS	MS	F
A (refuge)	2	0.345	0.173	0.837
B (assay)	2	0.325	0.163	0.789
A×B	4	0.824	0206	3.157*
Error	81	5.287	0.0652

ISSN: 1438-3888