Comparing trophic position estimates using bulk and compound specific stable isotope analyses: applying new approaches to mackerel icefish Champsocephalus gunnari

• Published in: PeerJ
• Main Authors: Canseco, José Antonio, Niklitschek, Edwin J., Quezada-Romegialli, Claudio, Yarnes, Chris, Harrod, Chris
• Other Authors: Universidad de Los Lagos, Instituto Antártico Chileno
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: PeerJ 2024
• Subjects: Euphausia superba; South Orkney Islands; Champsocephalus gunnari; Trophic ecology; Nitrogen isotope; Compound specific; Antarctic; Inach; Antarc*; Antarctic Krill; Icefish
• Online Access: http://hdl.handle.net/10261/366206; https://doi.org/10.7717/peerj.17372

Quantifying the tropic position (TP) of an animal species is key to understanding its ecosystem function. While both bulk and compound-specific analyses of stable isotopes are widely used for this purpose, few studies have assessed the consistency between and within such approaches. Champsocephalus...