Cuadro de texto: http://ifisc.uib-csic.es Cuadro de texto: Tew Kai et al. PNAS (2009) Cuadro de texto: Frigatebirds ‘follow’ LCSs not only to find there prey, but as biological corridors which bring them to foraging places Cuadro de texto: Results of statistical tests: Frigate birds fly on top of LCCs both for travelling as for foraging No significant difference between day and night positions No significant difference between come and return trip Cuadro de texto: Aggregation of prey on LCSs? or aggregation of subsurface predators? Olfatory clues (DMS produced by zooplankton) ? air currents? Unclear issue: no significant difference between attracting and repelling LCSs Cuadro de texto: Frigatebirds and FSLE

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