@article{fdi:010052855,
  title = {{T}he impact of metabolism on stable isotope dynamics : a theoretical framework},
  author = {{P}ecquerie, {L}. and {N}isbet, {R}. {M}. and {F}ablet, {R}. and {L}orrain, {A}nne and {K}ooijman, {S}. {A}. {L}. {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{S}table isotope analysis is a powerful tool used for reconstructing individual life histories, identifying food-web structures and tracking flow of elemental matter through ecosystems. {T}he mechanisms determining isotopic incorporation rates and discrimination factors are, however, poorly understood which hinders a reliable interpretation of field data when no experimental data are available. {H}ere, we extend dynamic energy budget ({DEB}) theory with a limited set of new assumptions and rules in order to study the impact of metabolism on stable isotope dynamics in a mechanistic way. {W}e calculate fluxes of stable isotopes within an organism by following fluxes of molecules involved in a limited number of macrochemical reactions: assimilation, growth but also structure turnover that is here explicitly treated. {T}wo mechanisms are involved in the discrimination of isotopes: (i) selection of molecules occurs at the partitioning of assimilation, growth and turnover into anabolic and catabolic sub-fluxes and (ii) reshuffling of atoms occurs during transformations. {S}uch a framework allows for isotopic routing which is known as a key, but poorly studied, mechanism. {A}s {DEB} theory specifies the impact of environmental conditions and individual state on molecule fluxes, we discuss how scenario analysis within this framework could help reveal common mechanisms across taxa.},
  keywords = {stable isotope ratios ; discrimination mechanisms ; dynamic energy budget ; theory ; metabolism ; reshuffling ; molecule selection},
  booktitle = {},
  journal = {{P}hilosophical {T}ransactions of the {R}oyal {S}ociety {B}. {B}iological {S}ciences},
  volume = {365},
  numero = {1557},
  pages = {3455--3468},
  ISSN = {0962-8436},
  year = {2010},
  DOI = {10.1098/rstb.2010.0097},
  URL = {https://www.documentation.ird.fr/hor/fdi:010052855},
}