Faculty of Biology, University of Latvia
Hard copy: ISSN 1691–8088
On-line: ISSN 2255–9582
Acta Univ Latv (2003) 662: 33–44
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Environmental and

Acta Univ Latv (2003) 662: 33–44

Orginal Article

The structure and dynamics of fish communities in the Latvian coastal zone (Pape - Pērkone), Baltic Sea

Didzis Ustups1,2*, Evalds Urtans1, Atis Minde1, Danute Uzars1
1Latvian Fisheries Research Institute, Daugavgrīvas iela 8, Rīga, LV-1007, Latvia
2Faculty of Biology, University of Latvia, Kronvalda bulv. 4, Rīga, LV-1050, Latvia
*Corresponding author, E-mail: didzisu@latfri.lv


The fish biodiversity in the Baltic Sea coastal area was analysed in 1998 - 2002. Different ecological groups – marine, diadromous and freshwater – were captured in survey gillnets and beach seine catches. The coastal fish communities revealed a strong seasonal variation. The water temperature increase early in the spring caused migration of juveniles and adult marine fishes from depths to the nursery, spawning and feeding grounds located in the coastal waters. In summer mostly diadromous and freshwater fi sh species migrated from the adjacent freshwater basins to the sea coastal feeding grounds. In 1998-2002 fi sh communities comprised representatives of various ecological types. The available information from the monitoring combined with the fisheries data could facilitate an ecologically-focused management of the coastal zone ecosystem.

Key words: Baltic Sea, coastal zone, diversity, fish community, seasonal dynamics.

Acta Univ Latv (2003) 662: 33–44
 DOI: http://doi.org/10.22364/eeb

Prof. Gederts Ievinsh

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