Embracing variability in amino acid δ15N fractionation: mechanisms, implications, and applications for trophic ecology

KW McMahon, MD McCarthy - Ecosphere, 2016 - Wiley Online Library
Compound‐specific stable isotope analysis (CSIA) of individual amino acids (AA s) has
become a powerful analytical tool in trophic ecology. Heavily fractionating “trophic” AA s (eg …

Advances in the application of amino acid nitrogen isotopic analysis in ecological and biogeochemical studies

N Ohkouchi, Y Chikaraishi, HG Close, B Fry… - Organic …, 2017 - Elsevier
Compound-specific isotopic analysis of amino acids (CSIA-AA) has emerged in the last
decade as a powerful approach for tracing the origins and fate of nitrogen in ecological and …

Methylmercury production below the mixed layer in the North Pacific Ocean

JD Blum, BN Popp, JC Drazen, C Anela Choy… - Nature …, 2013 - nature.com
Mercury enters marine food webs in the form of microbially generated monomethylmercury.
Microbial methylation of inorganic mercury, generating monomethylmercury, is widespread …

Carbon export mediated by mesopelagic fishes in the northeast Pacific Ocean

PC Davison, DM Checkley Jr, JA Koslow… - Progress in …, 2013 - Elsevier
The role of fishes in the global carbon cycle is poorly known and often neglected. We show
that the biomass of mesopelagic fishes off the continental USA west to longitude 141° W is …

Dining in the deep: the feeding ecology of deep-sea fishes

JC Drazen, TT Sutton - Annual review of marine science, 2017 - annualreviews.org
Deep-sea fishes inhabit∼ 75% of the biosphere and are a critical part of deep-sea food
webs. Diet analysis and more recent trophic biomarker approaches, such as stable isotopes …

Polybrominated diphenyl ethers (PBDEs) in fish tissue may be an indicator of plastic contamination in marine habitats

CM Rochman, RL Lewison, M Eriksen, H Allen… - Science of the total …, 2014 - Elsevier
The accumulation of plastic debris in pelagic habitats of the subtropical gyres is a global
phenomenon of growing concern, particularly with regard to wildlife. When animals ingest …

Meta-analysis of amino acid stable nitrogen isotope ratios for estimating trophic position in marine organisms

JM Nielsen, BN Popp, M Winder - Oecologia, 2015 - Springer
Estimating trophic structures is a common approach used to retrieve information regarding
energy pathways, predation, and competition in complex ecosystems. The application of …

Trophic discrimination of nitrogen stable isotopes in amino acids varies with diet quality in a marine fish

KW McMahon, SR Thorrold, TS Elsdon… - Limnology and …, 2015 - Wiley Online Library
Abstract Analysis of individual amino acid (AA) δ15N values is increasingly common in
studies of food web architecture, movement ecology, and biogeochemical cycling. However …

The trophodynamics of marine top predators: current knowledge, recent advances and challenges

JW Young, BPV Hunt, TR Cook, JK Llopiz… - Deep Sea Research …, 2015 - Elsevier
We review present understanding of the spatial and temporal diet variability
(trophodynamics) of a range of pelagic marine top predators, at both early and adult life …

Trophic position estimates of marine teleosts using amino acid compound specific isotopic analysis

CJ Bradley, NJ Wallsgrove, CA Choy… - Limnology and …, 2015 - Wiley Online Library
The increasing use of trophic position (TP) for assessing and describing ecosystems has
resulted in the emergence of novel techniques for accurate and accessible measurements …