The Orientation of Fish and the Vertical Stratification at Fine- and Micro-Structure Scales

摘要: Some characteristic properties of vertical fine structure and microstructure in natural waters are surveyed. Ubiquitous thermal microstructure, by its anisotrophy due to shear the fine-structure gradient layers, is a property that could be used fishes orient relative local current shear. The geostrophic causes bias probability breaking internal waves, depending on direction wave travel By this mechanism major ocean currents may mirrored microstructure. influence field character large-scale dispersion an odorous substance leads hypothesized for olfactory orientation. results from ultrasonic tracking Atlantic salmon European eels given show fish do perceive react structure.