Table 4 Origin and ranges of finally considered stable isotope data after standardization by subtracting the communities’ respective baseline.

Tinca tinca

England

Small ponds

⁸⁸

26

4.7 (3.9–5.4)

− 2.9 (− 4.3 to − 1.2)

Caudal muscle

Anguilla anguilla

Germany

Lake ecosystem Großer Vätersee

⁸⁹

45

6.0 (4.4–7.5)

− 4.7 (− 6.3 to − 3.0)

Caudal muscle

Austropotamobius pallipes

–

–

–

–

–

–

Tail muscle

Gyrinus sp.

Canada

Experimental Lake area in Western Ontario

⁸⁵

17

− 4.9 (− 6.0 to − 3.8)

0.2 (− 3.6 to 3.6)

Whole organism

Micropterus salmoides

Spain

Arreo Lake in Basque country

³³

15

6.8 (5.8–7.9)

− 2.2 (− 3.1 to − 0.9)

Caudal muscle

Cyprinus carpio

11

3.8 (2.6–5.5)

− 5.3 (− 7.1 to − 3.5)

Caudal muscle

Lepomis gibbosus

15

5.1 (3.5–7.3)

− 3.6 (− 4.7 to 1.4)

Caudal muscle

Procambarus clarkii

15

1.0 (− 1.5 to 3.3)

0.4 (− 3.1 to 5.2)

Tail muscle

Phragmites australis

5

0.0 (− 0.4 to 0.6)

− 0.0 (− 0.7 to 0.6)

5 x 5 pooled leaf samples

Cladium mariscus

Not sampled