Open AccessOceanographic aspects of the recruitment of eels to the Baltic Sea
Author(s) -
Håkan Westerberg
Publication year - 1998
Publication title -
bulletin français de la pêche et de la pisciculture
Language(s) - English
Resource type - Journals
eISSN - 2777-3450
pISSN - 0767-2861
DOI - 10.1051/kmae:1998042
Subject(s) - oceanography , sound (geography) , baltic sea , fishery , advection , spring (device) , environmental science , abundance (ecology) , geology , geography , climatology , biology , mechanical engineering , physics , engineering , thermodynamics
The processes by which eels arrive to the Baltic Sea are discussed in the light of an almost total lack of 0+ eels in the Kattegatt and the Sound during 1996. The comparatively high elver abundance at the Skagerrak coast the same year indicates that this was due to a failure of the glass eels to penetrate into the Kattegatt, which can be attributed to a lack of westerly winds during the winter and early spring. A tentative scenario is a mainly passive surface advection south along the Swedish Kattegatt coast followed by an active migration of the 0+ elvers in a narrow, shallow coastal region through the Sound and into the Baltic