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Individual growth as a non-dietary determinant of the isotopic niche metrics [Methods in Ecology and Evolution]

Keywords : dietary diversity, diet-consumer fractionation, intrapopulation variability, isotopic niche, growth and nutritional status, mysids

par Frédéric Magné - publié le

1. Quantitative analytical approaches for isotopic niche analysis in the trophic diversity studies are proliferating rapidly ; however, the assumptions behind the isotopic niche applications are rarely tested. One of the main assumptions is independence of the niche metrics and physiological status of the animals. The aim of this experimental study was to test the relationship between growth and Layman’s metrics of isotopic niche in consumers eating the same food but in different quantities and growing at different rates.(...)

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