@article{fdi:010089773,
  title = {{S}ound-scattering layers related to pelagic habitat characteristics : the case [r{\'e}sum{\'e} de poster]},
  author = {{D}iogoul, {N}. and {B}rehmer, {P}atrice and {P}errot, {Y}annick and {T}iedeman, {M}. and {T}hiam, {A}. and {E}l {A}youbi, {S}. and {M}ouget, {A}. and {S}arr{\'e}, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{U}nderstanding the relationship between sound scattering layers ({SSL}s) and pelagic habitat char-acteristics is a substantial step to apprehend ecosystem dynamics. {SSL}s are detected on echo sounders representing aggregated marine pelagic organisms. {I}n this study, {SSL} characteristics of zooplankton and micronekton were identified during an upwelling event in two contrasting areas of the {S}enegalese continental shelf. {H}ere a cold upwelling-influenced inshore area was sharply separated by a strong thermal boundary from a deeper, warmer, stratified offshore area. {M}ean {SSL} thickness and {SSL} vertical depth increased with the shelf depth. {T}he thickest and deepest {SSL}s were observed in the offshore part of the shelf. {H}ence, zooplankton and micronek-ton seem to occur more frequently in stratified water conditions rather than in fresh upwelled water. {D}iel vertical and horizontal migrations of {SSL}s were observed in the study area. {D}iel pe-riod and physicochemical water characteristics influenced {SSL} depth and {SSL} thickness. {A}lt-hough chlorophyll-a concentration insignificantly affected {SSL} characteristics, the peak of chlo-rophyll a was always located above or in the middle of the {SSL}s, regularly matching with the peak of {SSL} biomass. {S}uch observations indicate trophic relationships, suggesting {SSL}s to be mainly composed of phytoplanktivorous zooplankton and micronekton. {D}espite local hypoxia, below 30m depth, distribution patterns of {SSL}s indicate no vertical migration boundary. {T}he results increase the understanding of the spatial organization of mid-trophic species and migra-tion patterns of zooplankton and micronekton, and they will also improve dispersal models for organisms in upwelling regions.},
  keywords = {{SENEGAL} ; {ATLANTIQUE}},
  booktitle = {{W}orking group of fisheries acoustics, science and technology ({WGFAST})},
  journal = {{ICES} {S}cientifics {R}eports},
  volume = {4},
  numero = {54},
  pages = {50--51},
  ISSN = {2618-1371},
  year = {2022},
  URL = {https://www.documentation.ird.fr/hor/fdi:010089773},
}