@article{fdi:010084674,
  title = {{A}pplying acoustic scattering layer descriptors to depict mid-trophic pelagic organisation : the case of {A}tlantic {A}frican large marine ecosystems continental shelf},
  author = {{M}ouget, {A}nne and {B}rehmer, {P}atrice and {P}errot, {Y}annick and {U}anivi, {U}. and {D}iogoul, {N}. and {E}l {A}youbi, {S}. and {J}eyid, {M}. {A}. and {S}arre, {A}. and {B}ehagle, {N}olwenn and {K}ouassi, {A}. {M}. and {F}eunteun, {E}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}o identify key nonspecific organisational characteristics of the mid-trophic pelagic communities, which remain a challenge, we work with sound scattering layers ({SSL}s). {A}pplication was tested in the three {A}frican {A}tlantic {L}arge {M}arine {E}cosystems ({AALME}s) to assess the utility of adapting and developing new acoustic variables. {O}ur methodology allowed comparison between {L}arge {M}arine {E}cosystems ({LME}s) based on 14 morphological, spatial and acoustic variables to characterize {SSL}s over time. {T}hese original variables were effective in monitoring and comparing the {LME}s, and even allowed us to discriminate different organisations inside the {C}anary {C}urrent {LME}. {C}ommon traits identified for all {AALME}s included the importance of the shallowest {SSL}. {H}owever, we identified an unexpected night-time pattern in {SSL} distributions in the {B}enguela {C}urrent {LME} which reflect a major difference in diel vertical migration mechanisms relative to other {AALME}s. {W}e also highlighted the predominance of elementary sampling unit ({ESU}s) with a single {SSL} and an unoccupied tiny layer close to the bottom, even if some {ESU}s presented up to six {SSL}s. {I}nter-annual changes in {SSL} organisation are highlighted by adaptation of original variables as the proportion of the water column occupied by {SSL}s and the relative importance of the shallowest {SSL}. {SSL} variables have been used mostly in deep water; here, we applied them on the continental shelf. {SSL} variables can be used to standardize the monitoring of marine ecosystems and capture change in spatial structure and function of mid-trophic pelagic marine ecosystems worldwide, even in data-poor areas where species identification of lower-trophic pelagic organism remains a challenge.},
  keywords = {sound-scattering layer ; fisheries acoustics ; ecosystem variables ; diel ; vertical migration ; {M}atecho ; {C}anary {C}urrent {L}arge {M}arine {E}cosystem ; {B}enguela {C}urrent {L}arge {M}arine {E}cosystem ; {ATLANTIQUE} ; {AFRIQUE} ; {CANARIES} {COURANT} ; {GUINEE} {COURANT} ; {BENGUELA} {COURANT}},
  booktitle = {},
  journal = {{F}ishes},
  volume = {7},
  numero = {2},
  pages = {86 [19 ]},
  year = {2022},
  DOI = {10.3390/fishes7020086},
  URL = {https://www.documentation.ird.fr/hor/fdi:010084674},
}