@article{fdi:010055690,
  title = {{O}xygen : a fundamental property regulating pelagic ecosystem structure in the coastal southeastern tropical pacific},
  author = {{B}ertrand, {A}rnaud and {C}haigneau, {A}lexis and {P}eraltilla, {S}. and {L}edesma, {J}. and {G}raco, {M}. and {M}onetti, {F}lorian and {C}havez, {F}. {P}.},
  editor = {},
  language = {{ENG}},
  abstract = {{B}ackground: {I}n the southeastern tropical {P}acific anchovy ({E}ngraulis ringens) and sardine ({S}ardinops sagax) abundance have recently fluctuated on multidecadal scales and food and temperature have been proposed as the key parameters explaining these changes. {H}owever, ecological and paleoecological studies, and the fact that anchovies and sardines are favored differently in other regions, raise questions about the role of temperature. {H}ere we investigate the role of oxygen in structuring fish populations in the {P}eruvian upwelling ecosystem that has evolved over anoxic conditions and is one of the world's most productive ecosystems in terms of forage fish. {T}his study is particularly relevant given that the distribution of oxygen in the ocean is changing with uncertain consequences. {M}ethodology/{P}rincipal {F}indings: {A} comprehensive data set is used to show how oxygen concentration and oxycline depth affect the abundance and distribution of pelagic fish. {W}e show that the effects of oxygen on anchovy and sardine are opposite. {A}nchovy flourishes under relatively low oxygen conditions while sardine avoid periods/areas with low oxygen concentration and restricted habitat. {O}xygen consumption, trophic structure and habitat compression play a fundamental role in fish dynamics in this important ecosystem. {C}onclusions/{S}ignificance: {F}or the ocean off {P}eru we suggest that a key process, the need to breathe, has been neglected previously. {I}nclusion of this missing piece allows the development of a comprehensive conceptual model of pelagic fish populations and change in an ocean ecosystem impacted by low oxygen. {S}hould current trends in oxygen in the ocean continue similar effects may be evident in other coastal upwelling ecosystems.},
  keywords = {{PACIFIQUE} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{P}los {O}ne},
  volume = {6},
  numero = {12},
  pages = {e29558},
  ISSN = {1932-6203},
  year = {2011},
  DOI = {10.1371/journal.pone.0029558},
  URL = {https://www.documentation.ird.fr/hor/fdi:010055690},
}