Biodiversity of Three Backwaters in the South West Coast of India

Table 12

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

Name of fish	Hydrogen sulfide	Ammonia nitrogen	Nitrite nitrogen	Phosphate phosphorus	Silicate silicon
Oreochromis mossambicus	−0.67^*	−0.27	−0.53^*	−0.31	−0.04
Etroplus suratensis	0.46	−0.13	0.52^*	−0.07	0.12
Etroplus maculatus	0.21	0.30	0.30	−0.40	0.04
Terapon jarbua	0.03	−0.32	0.23	−0.06	0.02
Caranx sehfsciatis	−0.68^*	−0.49	−0.46	−0.02	−0.41
Caranx ignobilis	−0.79^**	−0.63^*	−0.45	−0.49	−0.20
Chanda ranga	−0.78^**	−0.71^**	−0.58^*	−0.15	−0.06
Chanda nama	0.27	0.00	0.38	0.07	−0.11
Mugil cephalus	0.36	−0.08	0.33	−0.13	0.23
Channa marulius	0.87^**	0.32	0.68^*	0.20	0.25
Channa striatus	−0.12	0.18	−0.36	0.02	−0.37
Megalops cyprinoides	0.53^*	0.18	0.36	0.48	0.09
Gerres filamentosus	0.08	0.05	−0.32	−0.06	0.22
Puntius filamentosus	0.24	0.04	0.39	−0.06	−0.14
Anabas testudineus	0.076	−0.21	−0.05	0.29	0.11
Mystus gulio	0.53^*	0.01	0.47	0.30	0.36
Arius arius	0.56^*	0.31	0.53^*	0.19	0.33
Valamugil cunnesius	−0.16	−0.19	−0.36	−0.02	−0.17
Liza parsia	−0.23	−0.62^*	0.19	−0.24	0.4
Elops machnata	0.53^*	−0.06	0.47	0.41	0.40
Catla catla	0.35	0.10	0.06	0.09	0.05
Hyphorhampus improvis	−0.19	−0.17	0.01	−0.36	−0.14
Periophthalmus weberi	−0.68^*	−0.19	−0.41	−0.34	−0.22
Gaterius diagramms	−0.56^*	−0.38	−0.47	0.19	−0.21
Scatophagus argus	−0.31	−0.08	−0.03	−0.45	−0.34
Lutjanus johnii	−0.26	−0.33	−0.28	−0.17	0.57^*
Scomberomorus guttatus	−0.48	−0.34	−0.17	−0.58^*	−0.20
Scylla serrata	0.06	−0.12	0.15	0.09	−0.16
Penaeus monodon	−0.25	−0.07	−0.02	−0.28	−0.43
Penaeus indicus	0.36	0.58^*	0.09	0.51^*	0.01
Macrobrachium idella	0.30	0.17	0.22	−0.00	0.23

Significant, ^**highly significant.