@article{fdi:010069458,
  title = {{T}rophic structure in the northern {H}umboldt {C}urrent system : new perspectives from stable isotope analysis},
  author = {{E}spinoza, {P}. and {L}orrain, {A}nne and {M}{\'e}nard, {F}r{\'e}d{\'e}ric and {C}herel, {Y}. and {T}remblay-{B}oyer, {L}. and {A}rguelles, {J}. and {T}afur, {R}. and {B}ertrand, {S}ophie and {T}remblay, {Y}ann and {A}yon, {P}. and {M}unaron, {J}ean-{M}arie and {R}ichard, {P}. and {B}ertrand, {A}rnaud},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he northern {H}umboldt {C}urrent system ({NHCS}) is the most productive eastern boundary upwelling system ({EBUS}) in terms of fish productivity despite having a moderate primary production compared with other {EBUS}. {T}o understand this apparent paradox, an updated vision of the trophic relationships in the {NHCS} is required. {U}sing delta {C}-13 and delta {N}-15 as a proxy of foraging habitat and trophic position, respectively, we focused on thirteen relevant taxonomic groups from zooplankton to air-breathing top predators collected off {P}eru from 2008 to 2011. {E}stimates of trophic position ({TP}) for the anchoveta {E}ngraulis ringens were high (3.4-3.7), in accordance with previous studies showing zooplankton as a major contributor to anchoveta diet and challenging the often-cited short food chain hypothesis for this ecosystem. {T}he squat lobster, {P}leuroncodes monodon, a little studied consumer had similar delta {N}-15 values that of anchoveta, and thus similar trophic position. {H}owever, their differing delta {C}-13 values indicate that their foraging habitat do not fully overlap, which could alleviate potential competition between these species. {G}iven the current high biomass of squat lobsters in the ecosystem, we encourage that future research focus on this species and its role in the diet of top predators. {T}he present study provides first estimates of the relative {TP} of important taxonomic groups in the {NHCS}, which are needed to revisit anchoveta-centred ecosystem models for this region. {F}urther work using amino acid compound specific stable isotope analyses is now required to confirm these {TP} estimates.},
  keywords = {{PEROU} ; {PACIFIQUE} ; {HUMBOLDT} {COURANT}},
  booktitle = {},
  journal = {{M}arine {B}iology},
  volume = {164},
  numero = {4},
  pages = {art. 86 [15 p.]},
  ISSN = {0025-3162},
  year = {2017},
  DOI = {10.1007/s00227-017-3119-8},
  URL = {https://www.documentation.ird.fr/hor/fdi:010069458},
}