@article{fdi:010048790,
  title = {{S}easonal distribution and succession of dominant phytoplankton groups in the global ocean : a satellite view - art. no. {GB}3001},
  author = {{A}lvain, {S}. and {M}oulin, {C}. and {D}andonneau, {Y}ves and {L}oisel, {H}.},
  editor = {},
  language = {{ENG}},
  abstract = {{P}hytoplankton plays an important role in the global carbon cycle via the fixation of inorganic carbon during photosynthesis. {H}owever, the efficiency of this "biological pump of carbon' strongly depends on the nature of the phytoplankton. {M}onitoring spatial and temporal variations of the distribution of dominant phytoplankton groups at the global scale is thus of critical importance. {R}ecently, an algorithm has been developed to detect the major dominant phytoplankton groups from anomalies of the marine signal measured by ocean color satellites. {T}his method, called {PHYSAT}, allows to identify nanoeucaryotes, {P}rochlorococcus, {S}ynechococcus and diatoms. {I}n this paper, {PHYSAT} has been improved to detect an additional group, named phaeocystis-like, by analyzing specific signal anomalies in the {S}outhern {O}cean during winter months. {T}his new version of {PHYSAT} was then used to process daily global {S}ea{W}i{FS} {GAC} data between 1998 and 2006. {T}he global distribution of major phytoplankton groups is presented in this study as a monthly climatology of the most frequent phytoplankton group. {T}he contribution of nanoeucaryotes-dominated waters to the global ocean varies from 45 to 70% depending on the season, whereas both diatoms and phaeocystis-like contributions exhibit a stronger seasonal variability mostly due to the large blooms that occur during winter in the {S}outhern {O}cean. {T}hree regions of particular interest are also studied in more details: the {S}outhern {O}cean, the {N}orth {A}tlantic, and the {E}quatorial {P}acific. {T}he {N}orth {A}tlantic diatom bloom shows a large interannual variability. {L}arge blooms of both diatoms and phaeocystis-like are observed during winter in the {S}outhern {O}cean, with a larger contribution from diatoms. {T}heir respective geographical distribution is shown to be tightly related to the depth of the mixed-layer, with diatoms prevailing in stratified waters. {S}ynechococcus and {P}rochloroccocus prevail in the {E}quatorial {P}acific, but our data show also sporadic diatoms contributions in this region during {L}a {N}ina a. {T}he observed seasonal cycle and interannual variability of phytoplankton groups in the global ocean suggest that the {PHYSAT} archive is suitable to study the impact of climate variability on the structure of marine ecosystems.},
  keywords = {},
  booktitle = {},
  journal = {{G}lobal {B}iogeochemical {C}ycles},
  volume = {22},
  numero = {3},
  pages = {{B}3001},
  ISSN = {0886-6236},
  year = {2008},
  DOI = {10.1029/2007{GB}003154},
  URL = {https://www.documentation.ird.fr/hor/fdi:010048790},
}