@article{fdi:010077727, title = {{A} suboxic chlorophyll-a maximum persists within the {P}acific oxygen minimum zone off {M}exico}, author = {{M}arquez-{A}rtavia, {A}. and {S}anchez-{V}elasco, {L}. and {B}arton, {E}. {D}. and {P}aulmier, {A}ur{\'e}lien and {S}antamaria-{D}el-{A}ngel, {E}. and {B}eier, {E}.}, editor = {}, language = {{ENG}}, abstract = {{T}he tropical {O}xygen {M}inimum {Z}ones ({OMZ}) are known to shelter a chlorophyll-a maximum ({CM}) within suboxic waters (<20 mu mol kg(-1)), below other chlorophyll-a maxima and with an unknown temporal variability in the {P}acific {OMZ} off {M}exico. {H}ere, 1161 chlorophyll-a fluorescence and oxygen profiles collected between 2003 and 2016 were used to describe statistically the physical situation in which the suboxic-{CM} was found. {R}esults indicate that the suboxic-{CM} was a persistent feature at seasonal scale at depths between 40 and 190 m at an average density potential anomaly of 26 +/- 0.2 kg m(-3), related to the {S}ubtropical {S}ubsurface {W}ater, which is nearly unaffected by mixing with other water masses. {T}he suboxic-{CM} south of 21 degrees {N} was generally associated with the upper limit of the suboxic waters of the {OMZ}. {I}n this region, the distance between the suboxic waters and the euphotic zone (1% of surface irradiance) was > - 25 m year-round, which suggests that persistent low-light levels allow development of the suboxic-{CM}. {T}he persistence of the suboxic-{CM} is consistent with its association with a stable microbial community. {T}he effects on the ecosystem and biogeochemical cycles remain to be investigated.}, keywords = {{C}hlorophyll maxima ; {S}uboxia ; {P}ersistence ; {E}uphotic zone ; {M}exican {P}acific ; {MEXIQUE} ; {PACIFIQUE}}, booktitle = {}, journal = {{D}eep-{S}ea {R}esearch {P}art {II} : {T}opical {S}tudies in {O}ceanography}, volume = {169}, numero = {{N}o {S}p{\'e}cial}, pages = {art. 104686 [8p.]}, ISSN = {0967-0645}, year = {2019}, DOI = {10.1016/j.dsr2.2019.104686}, URL = {https://www.documentation.ird.fr/hor/fdi:010077727}, }