@article{fdi:010071417,
  title = {{T}he timing and the scale of the proliferation of {S}argassum polycystum in {F}unafuti {A}toll, {T}uvalu},
  author = {{A}ndr{\'e}fou{\¨e}t, {S}erge and {P}ayri, {C}laude and {V}an {W}ynsberge, {S}. and {L}auret, {O}. and {A}lefaio, {S}. and {P}reston, {G}. and {Y}amano, {H}. and {B}audel, {S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he biomass of the algal bloom of {S}argassum polycystum along the lagoon shores of {F}unafuti {A}toll ({T}uvalu) was estimated in {N}ovember 2014 using a multispectral spaceborne {P}leiades image and concurrent field data. {F}ield work established (1) the geographical limit of the distribution of the algae in the lagoon, (2) the different types of {S}. polycystum beds that developed in the lagoon, and (3) the range of biomass per square meter for 12 stations. {E}xtrapolation of field data using the green spectral band of the image over the distribution domain and manual correction to remove outliers suggested a standing biomass of 852 t of wet biomass (+/- 95% confidence interval = 420-1747 t) over 0.74 km(2) of reef. {S}ix months later, the processing of a {P}leiades image from {A}pril 2015 suggested a decrease of algal biomass by 17% (710 +/- 333-1542 t). {T}he examination of a multi-sensor series of very high-resolution multispectral images (acquired in 2002, 2003, 2004, 2010, 2011, 2012, 2014, 2015) suggested that algal proliferation started in 2010, with a strong unambiguous signal 1 year later in 2011. {T}he time-series of images also suggested that overall, the biomass had remained fairly stable since 2012, but spatial variations occur, with algae disappearing in some areas, and developing in others. {P}erspectives for future monitoring are discussed.},
  keywords = {{A}lgal bloom ; {I}nvasive species ; {S}argassum ; {R}emote sensing ; {P}leiades images ; {A}toll ; {P}acific {O}cean ; {PACIFIQUE} ; {POLYNESIE} ; {TUVALU} ; {FUNAFUTI} {ATOLL}},
  booktitle = {},
  journal = {{J}ournal of {A}pplied {P}hycology},
  volume = {29},
  numero = {6},
  pages = {3097--3108},
  ISSN = {0921-8971},
  year = {2017},
  DOI = {10.1007/s10811-017-1165-8},
  URL = {https://www.documentation.ird.fr/hor/fdi:010071417},
}