@inproceedings{fdi:010089772,
  title = {{I}chthyological importance of shallow coastal areas for pelagic communities : contributions of echosounding [r{\'e}sum{\'e} de poster]},
  author = {{M}ouget, {A}. and {V}iviane, {D}. and {A}cou, {A}. and {F}eunten, {E}. and {T}hiriet, {P}. and {P}errot, {Y}annick and {L}e {G}off, {L}. and {B}rehmer, {P}atrice},
  editor = {},
  language = {{ENG}},
  abstract = {{M}arine communities are strongly structured by bathymetry and distance from the coast. {S}hallow coastal areas host diverse and abundant fish communities and are subjected to strong anthropo-genic pressures. {H}owever, assessments of good ecological status of pelagic fish populations do not generally take into account the ultra-coastal fringe of the coastline (<20m depth and <5km from coast). {D}ata presented in this study were acquired in {B}rittany ({F}rance) during eleven acous-tic surveys conducted in 2020 and 2021 using a splitbeam {EK}80 echosounder (70, 120 and 200 k{H}z). {P}elagic fish shoals were extracted from the echogram and characterized by spatial (location in the water column), morphological (size and shape of the shoal) and acoustic descriptors. {S}hoal descriptors were compared between coastal and ultra-coastal areas, taking into account variability between sites, seasons and years. {R}esults showed different shoal structures with notably smaller shoals of pelagic fish in the ultracoastal zone but with a stronger acoustic response, sug-gesting a higher density per school than offshore and/or different species. {T}his study highlights the uniqueness of ultra-coastal areas for marine pelagic fish communities and underlines the need to integrate their monitoring into marine management and action strategies to improve management and protection systems for these biocenoses.},
  keywords = {{FRANCE} ; {BRETAGNE}},
  volume = {4},
  numero = {54},
  pages = {50},
  booktitle = {{W}orking group of fisheries acoustics, science and technology ({WGFAST})},
  year = {2022},
  ISSN = {2618-1371},
  URL = {https://www.documentation.ird.fr/hor/fdi:010089772},
}