Biodiversity of Three Backwaters in the South West Coast of India

Table 13

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

Name of fish	Organic carbon	Total phosphorus	Total nitrogen	Copper	Lead	Manganese	Nickel	Zinc
Oreochromis mossambicus	0.11	−0.73^**	−0.29	0.18	−0.06	0.23	−0.65^*	0.11
Etroplus suratensis	0.00	0.53^*	0.42	−0.08	−0.02	−0.33	0.31	0.15
Etroplus maculatus	−0.45	−0.03	−0.38	−0.15	−0.50^*	−0.43	0.08	−0.04
Terapon jarbua	0.35	−0.16	0.30	0.17	−0.77^**	−0.72^**	0.07	0.73^**
Caranx sehfsciatis	0.79^**	−0.72^**	−0.10	0.48	−0.07	0.18	−0.30	0.65^*
Caranx ignobilis	0.24	−0.80^**	0.33	0.51^*	−0.08	0.18	−0.37	0.57^*
Chanda ranga	0.49	−0.86^**	0.16	0.46	−0.05	0.18	−0.66^*	0.55^*
Chanda nama	0.21	0.41	0.29	−0.10	−0.11	−0.31	0.46	0.31
Mugil cephalus	−0.24	0.09	−0.00	0.01	0.81^**	−0.77^**	0.01	0.33
Channa marulius	−0.22	0.78^**	−0.23	−0.36	−0.20	−0.53^*	0.25	−0.27
Channa striatus	−0.18	−0.17	−0.18	0.21	0.07	0.33	0.18	−0.16
Megalops cyprinoides	0.07	0.36	−0.06	−0.33	−0.32	−0.62^*	0.09	0.01
Gerres filamentosus	−0.39	−0.04	−0.15	−0.28	−0.19	−0.05	−0.25	−0.16
Puntius filamentosus	0.20	0.49	0.25	−0.04	0.20	0.00	0.49	0.11
Anabas testudineus	0.36	−0.13	0.16	−0.30	−0.53^*	−0.65^*	−0.25	0.45
Mystus gulio	0.07	0.33	0.12	−0.35	−0.56^*	−0.84^**	0.00	0.23
Arius arius	−0.17	0.41	−0.05	−0.54^*	−0.38	−0.69^*	0.12	−0.07
Valamugil cunnesius	0.18	−0.41	−0.19	−0.13	−0.55^*	−0.40	−0.30	0.46
Liza parsia	0.22	−0.50^*	0.07	0.73^**	−0.42	−0.24	−0.45	0.45
Elops machnata	0.19	0.26	0.14	−0.28	−0.50^*	−0.81^**	−0.06	0.24
Catla catla	−0.13	0.21	−0.50^*	0.10	−0.12	−0.02	0.01	−0.13
Hyphorhampus improvis	0.11	0.03	0.43	0.01	0.31	0.25	0.21	0.17
Periophthalmus weberi	0.17	−0.76^**	0.02	0.44	−0.32	0.14	−0.11	0.39
Gaterius diagramms	0.73^**	−0.70^**	−0.26	0.34	−0.08	0.13	−0.45	0.46
Scatophagus argus	−0.04	−0.35	0.10	0.31	−0.13	0.05	0.22	0.31
Lutjanus johnii	−0.34	−0.17	0.59^*	−0.10	0.19	0.19	−0.47	−0.17
Scomberomorus guttatus	−0.12	−0.50^*	0.30	0.55^*	−0.48	−0.08	0.01	0.45
Scylla serrata	0.28	−0.19	0.14	0.23	−0.43	−0.40	0.20	0.46
Penaeus monodon	0.01	−0.16	0.21	0.42	−0.15	0.07	0.45	0.38
Penaeus indicus	−0.30	0.60^*	0.02	−0.23	0.70^*	0.51^*	0.47	−0.77^**
Macrobrachium idella	−0.14	0.00	−0.76^**	0.03	−0.11	−0.07	−0.19	−0.21

Significant, ^**highly significant.