Publication Date:
2021-06-30
Description:
Fish larvae surveys provide information on the species composition in an area of investigation and leads to a better understanding of the entire fish community. Since 2000 every year in April/May an ichthyoplankton survey in ICES-Subdivision 22 and 24 has been performed to sample the plankton community in the western Baltic Sea. One objective was to acquire indicators of possible changes in the natural structures of the fish community. The time series derived from the Bongo-Net samples is too short to show a trend in larval densities. Up to now samples in the western Baltic Sea yielded only low mean densities. According to the reproductive biology the fish species were divided in three major groups:-Fish species with a long developmental phase in the plankton community-Small short living species with benthic eggs and a reduced planktonic phase-Guests without local spawning populationsSpecies were identified, which were absent in the plankton of the western Baltic Sea in the 1960s and 1970s.
Description:
Johann Heinrich von Thünen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung - Information Fishery research in 2010.
Johann Heinrich von Thünen-Institut, Institut für Ostseefischerei
Keywords:
Fisheries
;
Biology
;
Environment
;
Ecosystem
;
stock movement
;
reproduction
;
larval development
;
environmental conditions
Repository Name:
AquaDocs
Type:
article
,
FALSE
Format:
application/pdf
Format:
application/pdf
Format:
35-39
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