Fig. 4From: A multidisciplinary approach to identify priority areas for the monitoring of a vulnerable family of fishes in Spanish Marine National ParksScatter plot of stable isotopes-length relationships in Syngnathus acus captured in spring and summer 2016 in CÃes Archipelago (PNIA). Data for Arcade Cove pipefish (M. Planas, unpublished observations) and for S. abaster from PNAC (December 2016) are provided for comparative purposes. Arcade Cove specimens were collected on spring and summer 2016Back to article page