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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