Distribution of Major and Trace Elements in a Tropical Hydroelectric Reservoir in Sarawak, Malaysia

Table 3

Correlation analysis of metal concentrations in (a) water, (b) sediment, and (c) macroalgae and aquatic plant.

(a) Water

	Na	K	Mn	Cr	Mg	Fe	Ca	As	Se	Hg
Na	1.00
K	−0.34	1.00
Mn	0.15	0.61	1.00
Cr	−0.51	0.39	0.40	1.00
Mg	0.75	−0.71	−0.42	−0.65	1.00
Fe	0.25	0.40	0.93	0.32	−0.16	1.00
Ca	0.46	−0.61	−0.07	−0.12	0.55	0.14	1.00
As	−0.24	−0.51	−0.40	−0.32	0.05	−0.33	0.46	1.00
Se	−0.35	0.15	−0.39	0.34	−0.18	−0.50	−0.62	−0.54	1.00
Hg	0.78	0.19	0.64	−0.36	0.25	0.62	0.10	−0.34	−0.50	1.00

(b) Sediment

	K	Mn	Cr	Ni	Zn	Mg	Fe	Al	Ca	Se	Hg
K	1.00
Mn	0.25	1.00
Cr	0.02	−0.84*	1.00
Ni	0.28	0.35	−0.02	1.00
Zn	0.28	0.35	−0.02	1.00	1.00
Mg	0.51	0.39	−0.06	−0.95*	−0.95*	1.00
Fe	0.64	0.34	0.35	0.39	0.39	0.43	1.00
Al	0.13	0.58	0.62	0.41	0.41	0.28	0.55	1.00
Ca	0.70	−0.04	−0.32	0.46	0.46	0.64	0.39	−0.34	1.00
Se	−0.03	−0.39	−0.14	−0.17	−0.17	−0.18	0.05	−0.51	0.45	1.00
Hg	0.64	0.29	0.17	0.66	0.66	0.68	0.63	0.32	0.68	0.34	1.00

(c) Aquatic plants and macroalgae

	Na	K	Cr	Mg	Fe	Al	Ca	Hg
Na	1.00
K	−0.47	1.00
Cr	0.14	0.59	1.00
Mg	−0.93*	0.61	0.20	1.00
Fe	−0.29	0.68	0.10	0.18	1.00
Al	0.43	−0.38	−0.20	−0.62	0.24	1.00
Ca	0.13	−0.23	0.07	−0.21	0.17	−0.83*	1.00
Hg	0.43	−0.70	−0.44	−0.46	−0.79	−0.11	−0.41	1.00

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