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 …

A guide to using compound-specific stable isotope analysis to study the fates of molecules in organisms and ecosystems

JP Whiteman, EA Elliott Smith, AC Besser… - Diversity, 2019 - mdpi.com
The measurement of stable isotopes in 'bulk'animal and plant tissues (eg, muscle or leaf)
has become an important tool for studies of functional diversity from organismal to …

Meta‐analysis of primary producer amino acid δ15N values and their influence on trophic position estimation

MD Ramirez, AC Besser, SD Newsome… - Methods in Ecology …, 2021 - Wiley Online Library
Compound‐specific stable isotope analysis of individual amino acids (CSIA‐AA) has
emerged as a transformative approach to estimate consumer trophic positions (TPCSIA) that …

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 …

High‐resolution food webs based on nitrogen isotopic composition of amino acids

Y Chikaraishi, SA Steffan, NO Ogawa… - Ecology and …, 2014 - Wiley Online Library
Food webs are known to have myriad trophic links between resource and consumer
species. While herbivores have well‐understood trophic tendencies, the difficulties …

Essential biomolecules in food webs

L Ruess, DC Müller-Navarra - Frontiers in Ecology and Evolution, 2019 - frontiersin.org
We here review the ecological role of essential nutritional biomolecules [fatty acids (FA),
amino acids (AA), sterols, vitamins] in aquatic and terrestrial food webs, encompassing the …

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 …

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 …

Midwater zooplankton and suspended particle dynamics in the North Pacific Subtropical Gyre: A stable isotope perspective

CCS Hannides, BN Popp, CA Choy… - Limnology and …, 2013 - Wiley Online Library
We used amino acid (AA) compound‐specific isotope analysis (δ15NAA and δ13CAA
values) of midwater zooplankton and suspended particles to examine their dynamics in the …