Fitted spline intervals of δ15N and δ13C in the muscle and liver of sticklebacks sampled in 2017–2018. Solid lines are the mean values, and shaded areas represent upper and lower 95% confidence intervals during the course of the year in Lake Constance.

 
 
  Part of: Gugele SM, Baer J, Spießl C, Yohannes E, Blumenshine S, Roberts BJ, Mota-Ferreira MR, Brinker A (2023) Stable isotope values and trophic analysis of invasive three-spined stickleback in Upper Lake Constance points to significant piscivory. NeoBiota 87: 73-102. https://doi.org/10.3897/neobiota.87.100355