@inproceedings{fdi:30263, title = {{ENSO} events and consequences on nutrient, planktonic biomass, and production in the western tropical pacific ocean}, author = {{B}lanchot, {J}ean and {L}e {B}orgne, {R}obert and {L}e {B}outeiller, {A}ubert and {R}odier, {M}artine}, editor = {}, language = {{ENG}}, abstract = {{ENSO} events change the hydrographical structures and the planktonic biomass and production particularly in the low latitude region of the {P}acific ocean. {W}e compare here the consequences of these variations at 165°{E}, in two opposite situations, i.e. during an {ENSO} event in september 1987 and during an non {ENSO} event in september 1988. {P}reliminary conclusions show : (i) for the nutrients in september 1987, a thick nutrient-depleted mixed layer (under detectable limits) along the transect, except at 10°{S} and 9°{S} and in september 1988, a wide upwelling between 5°{S} and 2°{N} with surface nitrate concentrations ranging between 0.3 and 2m{M}; (ii) for phytoplankton, the abundance of cyanobacteria (procaryotes) and microalgae (eucaryotes) shows large changes both in cells abundance and depth distribution between two periods ... (iii) {P}rimary production maximum is deeper during {ENSO} event whereas it is shallow in the upwelling situation.}, keywords = {{CONSEQUENCE} {ECOLOGIQUE} ; {PRODUCTION} {BIOLOGIQUE} ; {SEL} {NUTRITIF} ; {BIOMASSE} ; {ZOOPLANCTON} ; {PHYTOPLANCTON} ; {ENSO} ; 1987 1988 ; {PACIFIQUE} {TROPICAL} {OUEST}}, numero = {}, pages = {785--790}, booktitle = {{W}estern {P}acific international meeting and workshop on {T}oga {C}oare : proceedings}, year = {1989}, URL = {https://www.documentation.ird.fr/hor/fdi:30263}, }