Biodiversity of Three Backwaters in the South West Coast of India

Table 11

Karl Pearson correlation showing the significance (5%) by relating the number of fishes and physicochemical parameters of Poonthura backwater.

Name of fish	Temperature	PH	Salinity	Alkalinity	Dissolved oxygen
Oreochromis mossambicus	−0.50^*	0.01	−0.01	−0.18	0.29
Etroplus suratensis	0.31	0.16	−0.18	0.30	−0.44
Etroplus maculatus	−0.25	0.33	0.63^*	−0.50^*	0.45
Terapon jarbua	0.14	−0.15	0.26	−0.03	−0.44
Caranx sehfsciatis	−0.20	−0.45	−0.15	0.13	−0.44
Caranx ignobilis	−0.54^*	−0.39	0.21	−0.24	−0.43
Chanda ranga	−0.48	−0.31	−0.16	0.07	−0.29
Chanda nama	0.40	−0.05	−0.19	0.32	−0.49
Mugil cephalus	−0.13	0.26	0.43	−0.33	0.09
Channa marulius	0.46	0.52^*	−0.16	0.23	0.21
Channa striatus	−0.26	−0.35	0.52^*	−0.58^*	0.11
Megalops cyprinoides	0.51^*	0.03	−0.19	0.34	0.07
Gerres filamentosus	−0.61^*	0.35	0.08	−0.32	0.51^*
Puntius filamentosus	0.42	0.01	−0.25	0.33	−0.50
Anabas testudineus	0.12	−0.04	−0.30	0.36	−0.08
Mystus gulio	0.38	0.25	−0.19	0.35	0.01
Arius arius	0.38	0.36	−0.10	0.28	0.27
Valamugil cunnesius	−0.45	−0.03	0.03	−0.11	0.11
Liza parsia	−0.21	0.09	0.32	−0.17	−0.21
Elops machnata	0.41	0.20	−0.24	0.45	−0.04
Catla catla	−0.28	0.35	0.08	−0.22	0.29
Hyphorhampus improvis	−0.05	−0.09	−0.12	0.15	−0.47
Periophthalmus weberi	−0.36	−0.40	0.64^*	−0.57^*	−0.10
Gaterius diagramms	−0.18	−0.30	−0.25	0.20	−0.15
Scatophagus argus	−0.26	−0.30	0.60^*	−0.44	−0.28
Lutjanus johnii	−0.36	0.17	−0.17	0.01	0.11
Scomberomorus guttatus	−0.34	−0.34	0.82^**	−0.76^**	−0.30
Scylla serrata	0.13	−0.36	0.38	−0.11	−0.36
Penaeus monodon	−0.09	−0.45	0.58^*	−0.46	−0.47
Penaeus indicus	0.49	−0.11	−0.12	0.12	0.18
Macrobrachium idella	−0.34	0.55^*	0.10	−0.12	0.56^*

Significant, ^**highly significant.