@article{fdi:010046092,
  title = {{T}op marine predators track {L}agrangian coherent structures},
  author = {{T}ew {K}ai, {E}milie and {R}ossi, {V}. and {S}udre, {J}. and {W}eimerskirch, {H}. and {L}opez, {C}. and {H}ernandez-{G}arcia, {E}. and {M}arsac, {F}rancis and {G}arcon, {V}.},
  editor = {},
  language = {{ENG}},
  abstract = {{M}eso-and submesoscales (fronts, eddies, filaments) in surface ocean flow have a crucial influence on marine ecosystems. {T}heir dynamics partly control the foraging behavior and the displacement of marine top predators (tuna, birds, turtles, and cetaceans). {I}n this work we focus on the role of submesoscale structures in the {M}ozambique {C}hannel in the distribution of a marine predator, the {G}reat {F}rigatebird. {U}sing a newly developed dynamic concept, the finite-size {L}yapunov exponent ({FSLE}), we identified {L}agrangian coherent structures ({LCS}s) present in the surface flow in the channel over a 2-month observation period ({A}ugust and {S}eptember 2003). {B}y comparing seabird satellite positions with {LCS} locations, we demonstrate that frigatebirds track precisely these structures in the {M}ozambique {C}hannel, providing the first evidence that a top predator is able to track these {FSLE} ridges to locate food patches. {A}fter comparing bird positions during long and short trips and different parts of these trips, we propose several hypotheses to understand how frigatebirds can follow these {LCS}s. {T}he birds might use visual and/or olfactory cues and/or atmospheric current changes over the structures to move along these biologic corridors. {T}he birds being often associated with tuna schools around foraging areas, a thorough comprehension of their foraging behavior and movement during the breeding season is crucial not only to seabird ecology but also to an appropriate ecosystemic approach to fisheries in the channel.},
  keywords = {frigatebird ; finite-size {L}yapunov exponent ; {M}ozambique {C}hannel ; submesoscale},
  booktitle = {},
  journal = {{P}roceedings of the {N}ational {A}cademy of {S}ciences of the {U}nited {S}tates of {A}merica},
  volume = {106},
  numero = {20},
  pages = {8245--8250},
  ISSN = {0027-8424},
  year = {2009},
  DOI = {10.1073/pnas.0811034106},
  URL = {https://www.documentation.ird.fr/hor/fdi:010046092},
}