@article{fdi:010088249,
  title = {{D}iatom-based paleoproductivity and climate change record of the {G}ulf of {T}ehuantepec ({E}astern {T}ropical {P}acific) during the last similar to 500 years},
  author = {{A}lmaraz-{R}uiz, {L}. and {M}achain-{C}astillo, {M}. {L}. and {S}ifeddine, {A}bdelfettah and {R}uiz-{F}ernandez, {A}. {C}. and {S}anchez-{C}abeza, {J}. {A}. and {R}odriguez-{R}amirez, {A}. and {L}opez-{M}endoza, {P}. {G}. and {M}endez-{M}illan, {M}ercedes and {C}aquineau, {S}andrine},
  editor = {},
  language = {{ENG}},
  abstract = {{C}hanges in marine productivity of the last five centuries in the {G}ulf of {T}ehuantepec were investigated using a high-resolution record of diatoms, organic carbon ({C}-org), total nitrogen ({TN}), {N}i/{A}l, and {C}u/{A}l. {T}he laminated sediments were dated by using {P}b-210 and {C}-14, with a bayesian age model providing a new {D}elta {R} = 247 +/- 30 years for the bulk sediment. {T}he {L}ittle {I}ce {A}ge ({LIA}) (similar to 1500 to similar to 1858 {CE}) was characterized by the predominance of cold-water and high productivity diatoms ({C}haetoceros spores, {T}halassionema nitzschioides, {L}ioloma pacificum, {T}halassiosira nanolineata, and {R}hizossolenia setigera) and high values of geochemical productivity proxies. {A} transition period (similar to 1860 to similar to 1919 {CE}) toward warmer conditions related to the end of the {LIA} and the beginning of the {C}urrent {W}arm {P}eriod ({CWP}), was indicated by the appearance of warm-water diatoms ({N}eodelphineis pelagica, {T}halassiosira tenera, and {R}hizossolenia bergonii), as well as lower values of {C}-org, {TN}, {N}i/{A}l, and {C}u/{A}l. {T}he most recent period of the {CWP} (similar to 1920 {CE} to today) was characterized by the increased abundance warm-water taxa ({N}. pelagica, {C}ymatodiscus planetophorus, {T}. tenera, {P}lagiogramma minus, {N}itzschia interruptestriata, and {R}. bergonii), and by the prevalence of low values of {C}-org, {TN}, {N}i/{A}l, and {C}u/{A}l. {T}hese changes in productivity during the {LIA} and {CWP} were likely driven by changes in solar irradiance and the migration of the {I}ntertropical {C}onvergence {Z}one. {T}his study highlights the spatial extent of the {LIA} in the {E}astern {T}ropical {N}orth {P}acific and contributes to the knowledge of the productivity response to climate in tropical regions.},
  keywords = {current warm period ; diatoms ; {G}ulf of {T}ehuantepec ; {L}ittle {I}ce {A}ge ; paleoproductivity ; upwelling ; {PACIFIQUE} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{H}olocene},
  volume = {[{E}arly access]},
  numero = {},
  pages = {09596836231183057 [16 ]},
  ISSN = {0959-6836},
  year = {2023},
  DOI = {10.1177/09596836231183057},
  URL = {https://www.documentation.ird.fr/hor/fdi:010088249},
}