@article{fdi:010071987,
  title = {{C}hanges in biological productivity and ocean-climatic fluctuations during the last similar to 1.5 kyr in the {H}umboldt ecosystem off northern {C}hile (27 degrees {S}) : a multiproxy approach},
  author = {{C}astillo, {A}. and {V}aldes, {J}. and {S}ifeddine, {A}bdelfettah and {R}eyss, {J}. {L}. and {B}ouloubassi, {I}. and {O}rtlieb, {L}uc},
  editor = {},
  language = {{ENG}},
  abstract = {{A} sedimentary box core ({BIAC}072014) collected in a coastal environment in the {H}umboldt {C}urrent {E}cosystem ({HCE}, {I}nglesa {B}ay, similar to 27 degrees {S}, northern {C}hile) was used to reconstruct the changes in biological productivity and ocean-climate fluctuations during the last similar to 1.5 kyr via geochemical, mineralogical and micropaleontological analyses. {F}rom similar to 510 {CE} to similar to 930 {CE}, "{E}l {N}ifio-like" conditions prevailed, while during the {M}edieval {C}limate {A}nomaly ({MCA}, similar to 950 {CE} to similar to 1450 {CE}), "{L}a {N}ifia-like" conditions predominated. {T}his pattern might have resulted from weakening/strengthening of the {W}alker cell, contraction/expansion of the {S}outh {P}acific {S}ub-tropical {H}igh ({SPSH}) and a predominance of warm/cold phases of the {P}acific {D}ecadal {O}scillation ({PDO}). {B}etween similar to 1820 {CE} and the present {I}nglesa {B}ay experienced a reduction in the {O}xygen {M}inimum {Z}one ({OMZ}) intensity and biological productivity, an increase in the detritic input and a decrease in sea surface temperature ({SST}). {D}espite the regional intensification and secular cooling (similar to 14 degrees {S} and similar to 27 degrees {S}) of coastal upwelling, the similarity between the reduction in biological productivity and {OMZ} intensity in this region and that in the central zone of {C}hile (36 degrees {S}) suggests that {I}nglesa {B}ay acts a transition zone in relation to the oceanographic behaviour of the {HCE}. {T}he reduction in the {OMZ} intensity and biological productivity during the last similar to 200 years could be explained by greater subsurface ventilation in intermediate depths due to more northward displacement of the subduction region of the {E}astern {S}outh {P}acific {I}ntermediate {W}ater ({ESPIW}) near similar to 30 degrees {S} in response to the strengthening of the circulation of the {S}ubtropical {G}yre. {T}he coastal cooling observed in the northern section of {HCE} during the current {W}arm {P}eriod suggests that it is not possible to demonstrate that {E}l {N}ino-like conditions promoted the reduction in biological productivity and {OMZ} intensity in {I}nglesa {B}ay.},
  keywords = {{N}orthern {C}hile ; {L}ate {H}olocene ; {O}xygen {M}inimum {Z}one intensity ; {B}enthic foraminifera ; {CHILI}},
  booktitle = {},
  journal = {{P}alaeogeography {P}alaeoclimatology {P}alaeoecology},
  volume = {485},
  numero = {},
  pages = {798--815},
  ISSN = {0031-0182},
  year = {2017},
  DOI = {10.1016/j.palaeo.2017.07.038},
  URL = {https://www.documentation.ird.fr/hor/fdi:010071987},
}