The zooplankton of the shallow lakes of the semi-arid region of southern South America

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Table 4

Spearman's correlation coefficients between the density of the main zooplankton species and the water ions of the ten lakes. Values in bold are significant.

		Cl⁻	SO₄²⁻	CO₃²⁻	HCO₃⁻	Na⁺	K⁺	Ca²⁺	Mg²⁺
Artemia persimilis	r_s	0.52	0.46	−0.23	−0.08	0.52	0.50	0.52	0.52
Artemia persimilis	p	0.0006	0.0032	0.1625	0.6212	0.0006	0.0011	0.0006	0.0006
Moina eugeniae	r_s	0.38	0.56	0.80	0.34	0.45	0.42	0.32	0.32
Moina eugeniae	p	0.0163	0.0002	<0.0001	0.0323	0.0040	0.0068	0.0461	0.0461
Daphnia menucoensis	r_s	0.13	−0.01	0.08	0.33	0.08	0.001	0.08	0.08
Daphnia menucoensis	p	0.4392	0.9403	0.6370	0.0408	0.6110	0.9941	0.6078	0.6078
Bosmina huaronensis	r_s	−0.57	−0.62	−0.34	−0.29	−0.55	−0.56	−0.63	−0.61
Bosmina huaronensis	p	0.0001	<0.0001	0.0343	0.0819	0.0002	0.0002	<0.0001	<0.0001
Boeckella poopoensis	r_s	0.56	0.56	0.62	0.49	0.55	0.53	0.39	0.39
Boeckella poopoensis	p	0.0002	0.0002	<0.0001	0.0014	0.0002	0.0004	0.0119	0.0119
Microcyclops anceps	r_s	−0.64	−0.68	−0.46	−0.37	−0.67	−0.67	−0.68	−0.66
Microcyclops anceps	p	<0.0001	<0.0001	0.0030	0.0188	<0.0001	<0.0001	<0.0001	<0.0001
Metacyclops mendocinus	r_s	−0.38	−0.34	−0.36	−0.12	−0.39	−0.35	0.01	−0.01
Metacyclops mendocinus	p	0.0160	0.0315	0.0222	0.4774	0.0125	0.0268	0.9549	0.9199
Brachionus plicatilis	r_s	0.28	0.43	0.57	0.40	0.34	0.38	0.05	0.06
Brachionus plicatilis	p	0.0832	0.0052	0.0001	0.0113	0.0300	0.0153	0.7590	0.7290
B. dimidiatus	r_s	−0.44	−0.43	−0.28	−0.21	−0.45	−0.38	−0.33	−0.32
B. dimidiatus	p	0.0043	0.0061	0.0768	0.1930	0.0033	0.0161	0.0363	0.0435
B. angularis	r_s	−0.61	−0.60	−0.41	−0.27	−0.57	−0.55	−0.47	−0.45
B. angularis	p	<0.0001	<0.0001	0.0086	0.0922	0.0001	0.0003	0.0022	0.0037
Keratella tropica	r_s	−0.48	−0.49	−0.28	−0.32	−0.47	−0.47	−0.46	−0.45
Keratella tropica	p	0.0017	0.0013	0.0768	0.0414	0.0021	0.0020	0.0030	0.0034
K. cochlearis	r_s	−0.47	−0.52	−0.31	−0.22	−0.48	−0.50	−0.48	−0.46
K. cochlearis	p	0.0022	0.0006	0.0518	0.1708	0.0016	0.0011	0.0017	0.0025
Hexarthra fennica	r_s	0.18	0.38	0.58	0.31	0.24	0.21	0.24	0.24
Hexarthra fennica	p	0.2789	0.0168	0.0001	0.0492	0.1314	0.1938	0.1401	0.1401

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