@article{fdi:010079778,
  title = {{E}ffect of a transducer horizontality default on lake fish stock assessment},
  author = {{B}lanluet, {A}. and {G}oulon, {C}. and {L}ebourges {D}haussy, {A}nne and {E}ymar-{D}auphin, {P}. and {G}uillard, {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{F}reshwater hydroacoustic surveys are frequently performed with small research boats. {T}hus, the transducer, usually fixed on a pole on the side of the boat, could be misaligned with the horizontal axis (i.e., the lake surface). {G}iven that fish acoustic responses are strongly directional, the transducer angle could induce attenuation of their backscattering strengths. {T}o test the influence of a small shift of the transducer orientation, we compared hydroacoustics estimates from two sampling nights on the {L}ake {A}nnecy: the first one being a transducer angle of 1.5 degrees with the horizontal and the second one being strictly horizontal. {W}e showed that the effect of such an angle is negligible over the sampling variability on the {TS} distribution of the fish population and the biomass assessment. {W}e conclude that a small shift in the transducer horizontality (<= 1.5 degrees) will not degrade the quality of the acoustic data.},
  keywords = {{F}isheries acoustics ; {F}reshwater ; {T}ransducer miss-alignment},
  booktitle = {},
  journal = {{A}coustics {A}ustralia},
  volume = {48},
  numero = {3},
  pages = {473--479},
  ISSN = {0814-6039},
  year = {2020},
  DOI = {10.1007/s40857-020-00206-1},
  URL = {https://www.documentation.ird.fr/hor/fdi:010079778},
}