@inproceedings{fdi:010088492,
  title = {{A}bundance estimates of micronekton organisms in tropical {P}acific {O}cean from trawl sampling, acoustic survey and backscatter models [r{\'e}sum{\'e}]},
  author = {{B}arbin, {L}. and {L}ebourges {D}haussy, {A}nne and {A}llain, {V}. and {R}oudaut, {G}ildas and {H}abasque, {J}{\'e}r{\'e}mie and {R}eceveur, {A}. and {L}e {H}odey, {P}. and {M}enk{\`e}s, {C}hristophe},
  editor = {},
  language = {{ENG}},
  abstract = {{M}icronekton, ubiquitous to all oceans plays a pivotal role in the trophic organisation and consti-tutes the food of most top predators. {D}ue to the paucity of sampling, estimates of these organ-isms abundance and specie distribution is largely unknown. {S}uch sampling comes either from trawls or active acoustic. {O}ne key question remains on how these two means of observations compare and complement each other. {O}ur study focuses on the analysis of active acoustic data from 8 oceanographic surveys in {S}outh {P}acific. {T}wo active acoustic methods were used simulta-neously: hull-mounted echo sounders and a wideband profiler. {T}hese data are examined to-gether with biological samples obtained by trawling which brings a ground truth to the acoustic measurements. {B}y comparing the in situ acoustic response, the modelled response from biologi-cal sampling and the density of organisms calculated from wideband profiles, we obtain an order of abundance estimates of micronekton in depth layers. {T}his comparison enables us to estimate the observed differences of organisms abundance between the three methods and helps under-standing. {O}ver the entire cruises, the average ratio between abundances derived from acoustic sounders and those obtained from trawled samples is on the order of 10 but varies strongly with depth.},
  keywords = {{PACIFIQUE} ; {ZONE} {TROPICALE}},
  volume = {4},
  numero = {54},
  pages = {39},
  booktitle = {{W}orking group of fisheries acoustics, science and technology ({WGFAST})},
  year = {2022},
  ISSN = {2618-1371},
  URL = {https://www.documentation.ird.fr/hor/fdi:010088492},
}