@article{fdi:010077831,
  title = {{F}ine-scale vertical structure of sound-scattering layers over an east border upwelling system and its relationship to pelagic habitat characteristics},
  author = {{D}iogoul, {N}. and {B}rehmer, {P}atrice and {P}errot, {Y}annick and {T}iedemann, {M}. and {A}bou, {T}hiam and {E}l {A}youbi, {S}. and {M}ouget, {A}nne and {M}igayrou, {C}. and {S}adio, {O}. and {S}arre, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{U}nderstanding the relationship between sound-scattering layers ({SSL}s) and pelagic habitat characteristics 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 micronekton 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 period and physicochemical water characteristics influenced {SSL} depth and {SSL} thickness. {A}lthough chlorophyll-a concentration insignificantly affected {SSL} characteristics, the peak of chlorophyll 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 30 m 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 migration patterns of zooplankton and micronekton, and they will also improve dispersal models for organisms in upwelling regions.},
  keywords = {{ATLANTIQUE} ; {ZONE} {TROPICALE} ; {SENEGAL} ; {CAP} {VERT}},
  booktitle = {},
  journal = {{O}cean {S}cience},
  volume = {16},
  numero = {1},
  pages = {65--81},
  ISSN = {1812-0784},
  year = {2020},
  DOI = {10.5194/os-16-65-2020},
  URL = {https://www.documentation.ird.fr/hor/fdi:010077831},
}