Distribution of Persistent Organic Pollutants and Mercury in Freshwater Ecosystems Under Changing Climate Conditions - Climate Change Impacts on Freshwater Ecosystems - page 193

(Pyrenees) (Tatras)

HCB HCB

14
12
10
8
6
4
2
0

20
15
10
5
0
-5
-10
-15

100 140

120
100
80
60
40
20
0

80

60

40

20

0

PCB S PCB S

80 14

12
10
8
6
4
2
0

20
15
10
5
0
-5
-10
-15

70
60
50
40
30
20
10
0

60

40

20

0

4,4'-DDE 4,4'-DDE

14
12
10
8
6
4
2
0

14
12
10
8
6
4
2
0

20 20

15
10
5
0
-5
-10
-15

16

12

8

4

0

HCH S HCH S

300
250
200
150
100

14
12
10
8
6
4
2
0

140
120
100
80
60
40
20
0

20
15
10
5
0
-5
-10
-15

50
0

Endosulfan Endosulfan 60

50
40
30
20
10
0

20 14

12
10
8
6
4
2
0

20
15
10
5
0
-5
-10
-15

16

12

8

4

0

Nov
2000

May
2001

Feb
2002

Mar
2002

June
2002

Jan
2003

June
2001

Sept
2001

Dec
2001

Mar
2002

June
2002

Figure 8.8 Geometric mean concentrations of various OCs in gas phase (bars)
compared to mean ambient temperature (points). The warmest periods generally
correlate with higher concentrations of the compounds in the gas phase. This trend is
clearest for the least volatile compounds and at the site of lowest temperatures
(Skalnate Pleso). (Based on van Drooge et al . 2004.)