J
Jonathan Grey
Researcher at Lancaster University
Publications - 93
Citations - 6675
Jonathan Grey is an academic researcher from Lancaster University. The author has contributed to research in topics: Trophic level & Isotope analysis. The author has an hindex of 45, co-authored 92 publications receiving 6039 citations. Previous affiliations of Jonathan Grey include Max Planck Society & University of East Anglia.
Papers
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Journal ArticleDOI
Bayesian stable isotope mixing models
Andrew C. Parnell,Donald L. Phillips,Stuart Bearhop,Brice X. Semmens,Eric J. Ward,Jonathan W. Moore,Andrew L. Jackson,Jonathan Grey,David J. Kelly,Richard Inger +9 more
TL;DR: This paper proposes a compositional mixture of the food sources corrected for various metabolic factors based on the isometric log‐ratio transform, which can apply a range of time series and non‐parametric smoothing relationships.
Journal ArticleDOI
A revised model for lipid‐normalizing δ13C values from aquatic organisms, with implications for isotope mixing models
Mikko Kiljunen,Jonathan Grey,Jonathan Grey,Tuula Sinisalo,Chris Harrod,Hemmo Immonen,Roger Jones +6 more
TL;DR: A revised lipid-normalization model is described that should be applicable to a wide range of marine and freshwater fish species in studies applying stable isotope analyses to ecological management issues and strongly advise against applying these kinds of lipid- normalization models to aquatic invertebrate data.
Journal ArticleDOI
Seasonal changes in the importance of the source of organic matter to the diet of zooplankton in Loch Ness, as indicated by stable isotope analysis
TL;DR: Zooplankton isotopic signatures shifted seasonally, reflecting a dietary switch from a reliance on allochthonous carbon derived from POM during winter and early spring to heavy dependence on algal production during summer.
Journal ArticleDOI
Population-Level Metrics of Trophic Structure Based on Stable Isotopes and Their Application to Invasion Ecology
Michelle C. Jackson,Ian Donohue,Andrew L. Jackson,J. Robert Britton,David M. Harper,Jonathan Grey,Jonathan Grey +6 more
TL;DR: New metrics derived from stable isotope data are applied to provide quantitative measures of trophic diversity within populations or species to test the hypothesis that sympatric invaders belonging to the same functional feeding group occupy a smaller isotopic niche than their allopatric counterparts.
Book ChapterDOI
Biomonitoring of Human Impacts in Freshwater Ecosystems: The Good, the Bad and the Ugly
Nikolai Friberg,Núria Bonada,David C. Bradley,Michael J. Dunbar,Francois Edwards,Jonathan Grey,Richard B. Hayes,Alan G. Hildrew,Nicolas Lamouroux,Mark Trimmer,Guy Woodward +10 more
TL;DR: It is timely to assess critically existing biomonitoring approaches to help ensure future programmes operate within a sound scientific framework and cost-effectively, as well as highlighting potentially rewarding new approaches and technologies that could complement existing methods.