Stable isotope analysis has emerged as one of the primary means for examining the
structure and dynamics of food webs, and numerous analytical approaches are now …

Stable isotope analysis (SIA) has proven to be a useful tool in reconstructing diets,
characterizing trophic relationships, elucidating patterns of resource allocation, and …

Stable isotope mixing models are increasingly used to quantify consumer diets, but may be
misused and misinterpreted. We address major challenges to their effective application …

Ecologists and evolutionary biologists are increasingly using big-data approaches to tackle
questions at large spatial, taxonomic, and temporal scales. However, despite recent efforts …

Polychaetes are common in most marine habitats and dominate many infaunal communities.
Functional guild classification based on taxonomic identity and morphology has linked …

Measures of trophic position (TP) are critical for understanding food web interactions and
human‐mediated ecosystem disturbance. Nitrogen stable isotopes (δ15N) provide a …

Nitrogen isotopic studies have the potential to shed light on the structure of ancient
ecosystems, agropastoral regimes, and human-environment interactions. Until relatively …

The “trophic level enrichment” between diet and body results in an overall increase in
nitrogen isotopic values as the food chain is ascended. Quantifying the diet–body Δ15N …

Mixing models are statistical tools that use biotracers to probabilistically estimate the
contribution of multiple sources to a mixture. These biotracers may include contaminants …

Stable isotopes are now used widely in ecological studies, including diet reconstruction,
where quantitative inferences about diet composition are derived from the use of mixing …