@article{fdi:010066882,
  title = {{A} model based on data from echosounder buoys to estimate biomass of fish species associated with fish aggregating devices},
  author = {{L}opezi, {J}. and {M}oreno, {G}. and {B}oyra, {G}. and {D}agorn, {L}aurent},
  editor = {},
  language = {{ENG}},
  abstract = {{M}ost of the drifting fish aggregating devices ({DFAD}s) used in industrial tropical tuna purse seine fisheries are equipped with satellite linked echosounder buoys, which provide fishing crews with remote, accurate geolocation information and rough estimates of {FAD}-associated tuna biomass. {O}ne of the most common brands of echosounder buoys ({SATLINK}, {M}adrid, {S}pain) is currently calibrated for the target strength of skipjack tuna ({K}atsuwonus pelamis) and provides biomass data on. that species. {U}sing that brand of echosounder buoy, we developed a new behavior-based approach to provide relative biomass estimates and a remote target classification of fish aggregations at {FAD}s. {T}he model is based on current knowledge of the vertical distribution of the main fish species associated with {FAD}s, as well as on appropriate {TS} and weight values for different species and sizes, and is further based on parameter optimization against a set of fishing operations on {DFAD}s. {T}his model reduced the error variability in biomass estimates by about 60% and also reduced the ranges of underestimation. and overestimation by 55% and 75%, respectively. {S}imilarly, the original coefficients of correlation and determination were also considerably improved from 0.50 and 0.25 to 0.90 and 0.82, respectively. {W}e discuss how this new method opens new opportunities for scientific studies and has implications for sustainable fishing.},
  keywords = {},
  booktitle = {},
  journal = {{F}ishery {B}ulletin},
  volume = {114},
  numero = {2},
  pages = {166--178},
  ISSN = {0090-0656},
  year = {2016},
  DOI = {10.7755/fb.114.2.4},
  URL = {https://www.documentation.ird.fr/hor/fdi:010066882},
}