The pelagic distribution of little auk Alle alle in relation to a frontal system off central Norway, March/April 1988

Abstract

Large concentrations of little auks were recorded off central Norway in March and April 1988. Their pelagic distributional patterns may be related to the frontal system between Atlantic water and the coastal stream off central Norway. Peak densities of more than 1,000 little auks per km2 were recorded in two areas on the continental shelf, close to the frontal system. These densities were up to 500 times as high as those found in adjacent areas. A change in distribution with season was observed, suggesting a seasonal association with the front.