Trophic Hierarchies Illuminated via Amino Acid Isotopic Analysis
Figure 2
Trophic position estimates, controlled-feeding trials.
Trophic position estimates (mean ± 1σ) from the controlled-feeding trials. A) Plots of observed trophic positions vs. their corresponding known trophic positions. Black circles indicate TPglu-phe estimates, and gray triangles indicate TPbulk estimates. The dotted line (y = x) represents perfect agreement between observed and known trophic positions. B) Degree of departure between the observed and known trophic positions (mean ± 1σ).