@article{fdi:010082723,
  title = {{S}easonal and inter-annual variability in abundance of the main tropical tunas in the {EEZ} of {C}{\^o}te d'{I}voire (2000-2019)},
  author = {{A}kia, {S}. and {A}mande, {M}. and {P}ascual, {P}. and {G}aertner, {D}aniel},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he seasonal and inter-annual variability in abundance of the main "local tropical tuna resources" in the {EEZ} of {C}{\^o}te d'{I}voire was analysed with catch and effort data from {F}rench and {S}panish purse seiners over the period 2000-2019. {A} seasonal spatio-temporal model developed by {T}horson et al. (2020a) was used to estimate abundance indices for the main tropical tunas by commercial category ( 10 kg and = 10 kg, which correspond roughly to maturity stage: immature and mature respectively), and fishing mode (free school sets and {FAD} sets). {F}urthermore, we decomposed the abundance time series into intrinsic mode functions using the {CEEMDAN} algorithm. {T}he decomposition procedure made it possible to filter out the noise in the signal and extract the seasonal and inter-annual components of the abundance indices. {A} generalized additive model ({GAM}) was applied to the abundance indices to reveal the influences of environmental factors on species abundance and spatio-temporal distribution. {B}iological interpretations of the seasonal and inter-annual variability in tropical tuna abundance were made and the possible effects of environmental variables on this abundance discussed. {O}ur results suggest that there are two main fishing seasons in the {EEZ} of {C}{\^o}te d'{I}voire. {I}t was also found that mature yellowfin tunas are abundant between the first and second quarter of the year while the best season for skipjack occurs between the third and fourth quarter. {I}n addition, we observed a considerable change over time in the seasonal and inter-annual variability of tropical tunas in this area.},
  keywords = {{A}bundance indices ; {S}easonal and inter-annual variation ; {S}patio-temporal ; vector autoregressive model ; ({VAST}) ; {T}ropical tuna ; {COTE} {D}'{IVOIRE} ; {ATLANTIQUE} ; {ZONE} {TROPICALE} ; {GOLFE} {DE} {GUINEE}},
  booktitle = {},
  journal = {{F}isheries {R}esearch},
  volume = {243},
  numero = {},
  pages = {106053 [11 ]},
  ISSN = {0165-7836},
  year = {2021},
  DOI = {10.1016/j.fishres.2021.106053},
  URL = {https://www.documentation.ird.fr/hor/fdi:010082723},
}