Table S2. Mean (± SD) δ13C and δ15N stable isotope values of whitefish, benthic macro-invertebrates and zooplankton
Month
Whitefish
Liver
lipidcorrected
n δ13C
December 50 -23 (2.4)
February 41 -23.6 (2)
May
40 -23.6 (2)
June
14 -22.7 (1.7)
July
49 -25 (1.9)
September 41 -23.4 (1.6)
δ15N
8 (0.6)
8.3 (0.7)
8.4 (0.7)
8.2 (0.6)
8.1 (0.4)
7.5 (0.5)
Muscle
lipidcorrected
δ13C
-25.1 (1.8)
-25.4 (1.4)
-24.7 (1.6)
-23.6 (1.7)
-24.5 (1.2)
-24.6 (1.2)
Benthic macro-invertebrate
Littoral (1m)
Profundal (20m)
δ15N
8.7 (0.3)
8.6 (0.3)
8.7 (0.4)
8.6 (0.3)
8.4 (0.4)
8.6 (0.3)
n
4
5
10
5
10
3
δ13C
-17.1 (0.8)
-17.8 (3.2)
-16 (1.5)
-20.8 (3.4)
-17.7 (2.1)
16.8 (0.4)
δ15N
2.6 (1.9)
3.4 (1.6)
3.9 (1.4)
2.9 (0.8)
3.2 (1.7)
2.9 (0.4)
n
3
5
7
5
6
8
δ13C
-27.4 (1.2)
-26.2 (4.8)
-27.3 (0.9)
-27.5 (0.5)
-27.9 (1.7)
-28.7 (1.8)
δ15N
7.9 (0.3)
6.7 (1.4)
7.1 (0.6)
7.1 (0.5)
7.3 (0.4)
7 (1)
Zooplankton
Pelagic (0 - 20m)
n
1
1
3
3
3
3
δ13C
-32.2
-30.5
-30.1 (0.3)
-32.4 (0.2)
-33.3 (0.2)
-31.6 (0.5)
δ15N
6.3
3.9
2.9 (0.2)
6.4 (0.1)
4.5 (0.3)
4 (0.5)