Stable isotopic evidence for trophic groupings and bio-regionalization of predators and their prey in oceanic waters off eastern Australia

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Comparison of morphological and DNA metabarcoding analyses of diets in exploited marine fishes (2015, background): “…analysis of gut contents, which provide a near real-time snapshot of feeding ecology (Hyslop 1980), or from isotopic and fatty acid signatures in tissue samples, which provide longer-term and aggregated information on trophic position (Dalsgaard et al. 2003, Revill et al. 2009, Hardy et al. 2010).”
Feeding ecology and niche segregation in oceanic top predators off eastern Australia (2010, background): “Off eastern Australia, we previously found a break in stable isotope concentrations, a measure of prey type, in swordfish, yellowfin and albacore tuna muscle tissue at approximately 30 S (Revill et al. 2009).”
Stable isotope analysis as a tool for elasmobranch conservation research: a primer for non-specialists (2012, methodology): “2011; Davenport and Bax 2002), community-wide trophic structure analysis (Davenport and Bax 2002; Revill et al. 2009; Boyle et al. 2012), changes in assemblages over time (Pinnegar et al.”
Stable isotope dynamics in elasmobranch fishes (2010, background): “Shortfin mako sharks sampled off eastern Australia also had higher d(15)N values than co-occurring tunas and billfishes (Revill et al., 2009), suggesting that urea concentration was not causing underestimation of trophic position.”