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Table 3 Summary of stable isotope analyses (SIA) dataset of baseline organisms under study expressed as mean values ± standard deviation (SD) in (‰): Mytilus edulis (collected each year at monthly intervals from June to November from North-east harbour and South harbour) and Littorina littorea (collected each year at monthly intervals from June to November from South beach)

From: Trophic niche partitioning of littoral fish species from the rocky intertidal of Helgoland, Germany

 

N

Mean δ 13C ± SD

Mean δ 15N ± SD

Mytilus edulis

   

 2009

100

−17.9 ± 1.3

11.1 ± 1.1

 2010

180

−17.6 ± 1.0

10.5 ± 1.2

 2011

90

−19.4 ± 0.9

10.1 ± 0.8

Littorina littorea

   

 2009

100

−17.3 ± 0.9

13.3 ± 0.9

 2010

120

−15.7 ± 1.4

14.2 ± 1.6

 2011

60

−16.8 ± 0.7

13.4 ± 0.8