Fig. 3From: Utilization of nitrate stable isotopes of Chydorus sphaericus (OF Müller) to elucidate the hydrological characteristics of riverine wetlands in the Nakdong River, South KoreaRelationships between the NO3−-N value and δ15N (‰) of Chydorus sphaericus (regression df = 1, residual df = 17) in a spring and b autumnBack to article page