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 | Â | Â | Â |
 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 | Â | Â | Â |
 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 |