@article{fdi:010076618,
  title = {{F}ish debris in sediments from the last 25 kyr in the {H}umboldt {C}urrent reveal the role of productivity and oxygen on small pelagic fishes},
  author = {{S}alvatteci, {R}. and {G}utierrez, {D}. and {F}ield, {D}. and {S}ifeddine, {A}bdelfettah and {O}rtlieb, {L}uc and {C}aquineau, {S}andrine and {B}aumgartner, {T}. and {F}erreira, {V}. and {B}ertrand, {A}rnaud},
  editor = {},
  language = {{ENG}},
  abstract = {{U}pwelling of cold, nutrient-rich water from the oxygen minimum zone ({OMZ}) off {P}eru sustains the world's highest production of forage fish, mostly composed of anchovy ({E}ngraulis ringens). {H}owever, the potential impacts of climate change on upwelling dynamics and thus fish productivity in the near future are uncertain. {H}ere, we reconstruct past changes in fish populations during the last 25,000 years to unravel their response to changes in {OMZ} intensity and productivity. {W}e quantified and identified fish scales and bones deposited in laminated sediments from {P}isco ({P}eru) with an average sampling resolution of 20.4 years (+/- 7.1). {T}he records span the {L}ast {G}lacial {M}aximum to the recent {H}olocene and thus encompass a variety of combinations of productivity, oxygen, and global temperature. {O}ur results reveal that productivity appears to be the main factor controlling small pelagic fish abundance, while sub-surface oxygenation affects mainly anchovy and likely sardine populations. {L}ower productivity and higher oxygen concentrations during the glacial resulted in lower total fish productivity, whereas higher productivity and a stronger {OMZ} in some time intervals during the {H}olocene resulted in higher fish abundances. {A} variety of different conditions between these two oceanographic end members indicate preferred environmental conditions for a variety of small pelagic fishes. {T}here is no evidence in our record for an out of phase relationship between anchovy and sardine at the timescales examined in the present study. {A}nchovy have been the predominant small pelagic fish throughout the record, at least over centennial to millennial timescales. {I}ts abundance reached a maximum during the {C}urrent {W}arm {P}eriod, an era characterized by high productivity and intense {OMZ} conditions. {T}hus, industrial fisheries developed during a period of exceptional productivity in relation to that of the last 25 kyr. {T}he records reveal that dramatic decreases in pelagic fish abundances have occurred in response to past large-scale climate changes than those observed in the instrumental period, which suggests that future climate change may result in substantial changes in ecosystem structure.},
  keywords = {{PACIFIQUE} ; {PEROU}},
  booktitle = {},
  journal = {{P}rogress in {O}ceanography},
  volume = {176},
  numero = {},
  pages = {102114 [26 ]},
  ISSN = {0079-6611},
  year = {2019},
  DOI = {10.1016/j.pocean.2019.05.006},
  URL = {https://www.documentation.ird.fr/hor/fdi:010076618},
}