Rare diatom Stauroneis balatonis Pantocsek recorded in Lake Savsko, Serbia

Figures & Tables

Parameter	Units	20 July	27 July	3 August	10 August	17 August	24 August	1 September	9 September
Water temperature	°C	27	27	27	27	27	26	25	24
Air temperature	°C	30	28	30	27	22	24	24	27
Transparency	m	3.5	3.1	3	3	2.75	3.1	2.75	2.6
Turbidity	NTU	1.09	0.98	1.08	1.35	3.17	0.96	1.14	0.96
pH		8.03	7.29	7.49	7.75	7.44	7.76	8.15	8.03
Dissolved oxygen	mg l⁻¹	8.03	7.29	7.49	7.75	7.44	7.76	8.15	8.03
Conductivity	μS cm⁻¹	229	222	225	218	214	222	222	224
Silicon dioxide	mg l⁻¹	0.68	0.09	0.39	0.42	0.70	0.58	0.62	0.59
Ammonia		0.06	0.05	< 0.05	< 0.05	< 0.05	0.05	0.07	<0.05
Nitrates		0.0036	0.0013	0.0039	0.0007	0.0010	0.0033	0.0020	0.0033
Nitrites		0.2657	0.0022	0.0022	0.2920	0.0198	0.0132	0.0022	0.0022
Orthophosphates		0.0015	0.0432	0.0432	0.003	0.0013	0.1652	0.0392	0.015
Total phosphorus		0.0111	0.0624	0.0591	0.0090	0.0105	0.1975	0.0714	0.0349
Biological oxygen demand	mg O₂ l⁻¹	4.00	2.10	2.70	1.80	3.20	6.10	3.10	2.00