Fishes of the Alitash National Park: Taxonomic Accounts with Identification Keys of Fish in Floodplain Rivers of Abbay and Tekeze Basins, Ethiopia

Table 3

Summary of variation in species abundance (n), species richness (S), Shannon diversity index (H′), Shannon evenness index (e^H/S), and equitability (J′) for the Ayima River (AR), Gelegu River (GR), and Shinfa River (SR).

Parameter	AR	GR	SR	F	P
Number of specimens (n)	1006	1124	589	1.642	0.080
Species richness (N)	35	38	25	67.444	0.000
Shannon diversity index (H′)	2.86	3.02	2.95	15.413	0.000
Shannon evenness index (e^H/S)	0.51	0.54	0.76	145.865	0.001
Equitability index (J′)	0.81	0.83	0.92	66.618	0.000

Significant values, .