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Baltic Sea
Water samples were taken:
1 – Ventspils;
2 – Liepāja;
3 – Mazirbe.
Water samples were identified by the Latvian Institute of Aquatic.
Water has been examined with a microscope.
In the Baltic Sea water were found:Green algae (Cladophora sp.)
Found in shallow coastal waters.Brown algae (Fucus sp.) To 5-7m depth.
Green algae (Cladophora sp.) Brown algae (Fucus sp.)
PH level identification in the Latvian Institute of Aquatic
Usually pH ~ 7.5
If water is more acidic, the faster the snails in the shell begin to dissolve.
PH
0
1
2
3
4
5
6
7
8
9
10
Winter Spring Summer Autumn
Mazirbe
Ventspils
Liepāja
Phosphate identification in the Latvian Institute of Aquatic
Phosphates in winter max, less in summer, spring min.
Water turbidity was not a criterion for discovering phosphate - can be compared to the samples.
Phosphate
0
0,5
1
1,5
2
2,5
3
Winter Spring Summer Autumn
Mazirbe
Ventspils
Liepāja
Water temperature on the surface
0
2
4
6
8
10
12
14
16
18
20
Winter Spring Summer Autumn
Mazirbe
Ventspils
Liepāja
Water temperature in the bottom layers
0
2
4
6
8
10
12
14
16
18
20
Winter Spring Summer Autumn
Mazirbe
Ventspils
Liepāja
Sea water salinity
0
1
2
3
4
5
6
7
Winter Spring Summer Autumn
Mazirbe
Ventspils
Liepāja
Wind strenght
0
2
4
6
8
10
12
14
16
Winter Spring Summer Autumn
m/s
Mazirbe
Ventspils
Liepāja
Wind direction
www.meteo.lv/hidrologija-datu-meklesana/?nid=466&
Winter Spring Summer Autumn
Mazirbe S S S SE
Ventspils S S S SE
Liepāja S S S SE
Conclusions
• PH is very similar in all seasons 6.5 - 8.5.• Least phosphates is in Ventspils 0.25, most - Mazirbe 1.4 - 2.5.• Water temperature at the sea surface is the coldest in spring,
warmest - in the summer.• Water temperature in the bottom layers is coldest in spring,
warmest – in the summer.• Saltest water is in Liepaja.• The highest wind is in the winter.
Thank you!
Author: Laura Vigante, Engure Secondary School
