Source	mean15N	Sd15N	Mean13C	sd13C
Zostera	0.0297	0.0097	0.3593	0.0561
Grass	0.0355	0.0063	0.4026	0.038
U.lactuca	0.0192	0.0053	0.2098	0.0327
Enteromorpha	0.0139	0.0057	0.1844	0.1131
