Table 3.

Frequencies of usage of dispersal, migration, and movement for different taxa

Taxa	Frequencies			G tests
	Dispersal	Migration	Movement	Dispersal	Migration	Movement
Fish	25	31	35	−26.83	14.28	36.44
Birds	35	62	18	−30.39	85.49	−13.62
Insects	51	7	18	36.36	−15.09	1.29
Plants	72	7	2	91.81	−15.98	−8.90
Mammals	26	17	19	−5.91	0.45	11.15
Molluscs	10	4	5	2.27	−2.01	1.41
Other invertebrates	22	5	4	18.15	−5.17	−4.57
Crustaceans	10	11	11	−8.16	5.27	8.98
Herptiles	6	4	13	−7.06	−3.54	23.55
All groups	257	148	125	70.2	63.7	55.7

Overall G tests for differences in usage frequency between different taxonomic groups are reported in the all-taxa row with 8 df (P < 0.001 in all cases). The term usage frequency was significantly below (bold) or above (italics) the all-taxa mean in a G test with 1 df. Critical values are P = 0.05, G = 3.85; P = 0.01, G = 6.63; and P = 0.001 G = 10.83.