@article{PAR00002141,
  title = {{A} study of crab larvae dispersal on the {W}estern {I}berian {S}helf : {P}hysical processes},
  author = {{P}eliz, {A}. and {M}archesiello, {P}. and {D}ubert, {J}. and {M}arta {A}lmelda, {M}. and {R}oy, {C}laude and {Q}ueiroga, {H}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A} high resolution nested model of the {W}estern {I}beria shelf is developed and compared with field observations. {W}e use an embedded particle tracking submodel that includes advection, diffusion, and diel vertical migration to simulate crab larvae dispersal. {A} set of experiments with varying oceanographic conditions and {L}agrangian model parameters is analysed. {I}t is found that major dispersal patterns that were observed in nature are reproduced in the model. {T}he floats drift within meridionally elongated patches parallel to the coast usually inshore of the 100 in isobath. {T}his distribution is controlled by local wind-driven circulation, buoyancy input from adjacent rivers, local topography, and vertical diel movements. {R}iver plumes are critical factors for retention patterns as they influence the near surface stratification, surface {E}kman layer and innershelf processes. {W}eakly stratified coastal waters associated with low river run-off generate an enlarged innershelf whose dynamics tend to trap the floats and force them to drift along-wind. {W}e find that the response to downwelling-favourable winds is always more dramatic than upwelling-favourable ones and this asymmetry results in a net {L}agrangian transport directed poleward. {A}nalyses of float distributions show that a large part of the floats (similar to 50%) is actually retained in the shelf zone near the emission points. {A} dispersal distance ({L}-d) of about 60 km is estimated which is mostly representative of along-shore dispersion. {S}ome consequences of our results to local population dynamics are finally discussed.},
  keywords = {{W}estern {I}beria ; larval dispersal ; dispersal distance ; crab larvae},
  booktitle = {},
  journal = {{J}ournal of {M}arine {S}ystems},
  volume = {68},
  numero = {1-2},
  pages = {215--236},
  ISSN = {0924-7963},
  year = {2007},
  DOI = {10.1016/j.jmarsys.2006.11.007},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00002141},
}